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{
"token": "Nzg5OTU2MTY2Nzk2NTc0NzQw.X95mAg.gQBAAQZMy5-a70fVtT50YiYO4oc",
"owners": [
102691114762371072
]
}

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#handles the database interactions
import sqlite3 as sql

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pip

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Metadata-Version: 2.1
Name: aiohttp
Version: 3.6.3
Summary: Async http client/server framework (asyncio)
Home-page: https://github.com/aio-libs/aiohttp
Author: Nikolay Kim
Author-email: fafhrd91@gmail.com
Maintainer: Nikolay Kim <fafhrd91@gmail.com>, Andrew Svetlov <andrew.svetlov@gmail.com>
Maintainer-email: aio-libs@googlegroups.com
License: Apache 2
Project-URL: Chat: Gitter, https://gitter.im/aio-libs/Lobby
Project-URL: CI: AppVeyor, https://ci.appveyor.com/project/aio-libs/aiohttp
Project-URL: CI: Circle, https://circleci.com/gh/aio-libs/aiohttp
Project-URL: CI: Shippable, https://app.shippable.com/github/aio-libs/aiohttp
Project-URL: CI: Travis, https://travis-ci.com/aio-libs/aiohttp
Project-URL: Coverage: codecov, https://codecov.io/github/aio-libs/aiohttp
Project-URL: Docs: RTD, https://docs.aiohttp.org
Project-URL: GitHub: issues, https://github.com/aio-libs/aiohttp/issues
Project-URL: GitHub: repo, https://github.com/aio-libs/aiohttp
Platform: UNKNOWN
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Intended Audience :: Developers
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Development Status :: 5 - Production/Stable
Classifier: Operating System :: POSIX
Classifier: Operating System :: MacOS :: MacOS X
Classifier: Operating System :: Microsoft :: Windows
Classifier: Topic :: Internet :: WWW/HTTP
Classifier: Framework :: AsyncIO
Requires-Python: >=3.5.3
Requires-Dist: attrs (>=17.3.0)
Requires-Dist: chardet (<4.0,>=2.0)
Requires-Dist: multidict (<5.0,>=4.5)
Requires-Dist: async-timeout (<4.0,>=3.0)
Requires-Dist: yarl (<1.6.0,>=1.0)
Requires-Dist: idna-ssl (>=1.0) ; python_version < "3.7"
Requires-Dist: typing-extensions (>=3.6.5) ; python_version < "3.7"
Provides-Extra: speedups
Requires-Dist: aiodns ; extra == 'speedups'
Requires-Dist: brotlipy ; extra == 'speedups'
Requires-Dist: cchardet ; extra == 'speedups'
==================================
Async http client/server framework
==================================
.. image:: https://raw.githubusercontent.com/aio-libs/aiohttp/master/docs/_static/aiohttp-icon-128x128.png
:height: 64px
:width: 64px
:alt: aiohttp logo
|
.. image:: https://travis-ci.com/aio-libs/aiohttp.svg?branch=master
:target: https://travis-ci.com/aio-libs/aiohttp
:align: right
:alt: Travis status for master branch
.. image:: https://ci.appveyor.com/api/projects/status/tnddy9k6pphl8w7k/branch/master?svg=true
:target: https://ci.appveyor.com/project/aio-libs/aiohttp
:align: right
:alt: AppVeyor status for master branch
.. image:: https://codecov.io/gh/aio-libs/aiohttp/branch/master/graph/badge.svg
:target: https://codecov.io/gh/aio-libs/aiohttp
:alt: codecov.io status for master branch
.. image:: https://badge.fury.io/py/aiohttp.svg
:target: https://pypi.org/project/aiohttp
:alt: Latest PyPI package version
.. image:: https://readthedocs.org/projects/aiohttp/badge/?version=latest
:target: https://docs.aiohttp.org/
:alt: Latest Read The Docs
.. image:: https://badges.gitter.im/Join%20Chat.svg
:target: https://gitter.im/aio-libs/Lobby
:alt: Chat on Gitter
Key Features
============
- Supports both client and server side of HTTP protocol.
- Supports both client and server Web-Sockets out-of-the-box and avoids
Callback Hell.
- Provides Web-server with middlewares and pluggable routing.
Getting started
===============
Client
------
To get something from the web:
.. code-block:: python
import aiohttp
import asyncio
async def fetch(session, url):
async with session.get(url) as response:
return await response.text()
async def main():
async with aiohttp.ClientSession() as session:
html = await fetch(session, 'http://python.org')
print(html)
if __name__ == '__main__':
loop = asyncio.get_event_loop()
loop.run_until_complete(main())
Server
------
An example using a simple server:
.. code-block:: python
# examples/server_simple.py
from aiohttp import web
async def handle(request):
name = request.match_info.get('name', "Anonymous")
text = "Hello, " + name
return web.Response(text=text)
async def wshandle(request):
ws = web.WebSocketResponse()
await ws.prepare(request)
async for msg in ws:
if msg.type == web.WSMsgType.text:
await ws.send_str("Hello, {}".format(msg.data))
elif msg.type == web.WSMsgType.binary:
await ws.send_bytes(msg.data)
elif msg.type == web.WSMsgType.close:
break
return ws
app = web.Application()
app.add_routes([web.get('/', handle),
web.get('/echo', wshandle),
web.get('/{name}', handle)])
if __name__ == '__main__':
web.run_app(app)
Documentation
=============
https://aiohttp.readthedocs.io/
Demos
=====
https://github.com/aio-libs/aiohttp-demos
External links
==============
* `Third party libraries
<http://aiohttp.readthedocs.io/en/latest/third_party.html>`_
* `Built with aiohttp
<http://aiohttp.readthedocs.io/en/latest/built_with.html>`_
* `Powered by aiohttp
<http://aiohttp.readthedocs.io/en/latest/powered_by.html>`_
Feel free to make a Pull Request for adding your link to these pages!
Communication channels
======================
*aio-libs* google group: https://groups.google.com/forum/#!forum/aio-libs
Feel free to post your questions and ideas here.
*gitter chat* https://gitter.im/aio-libs/Lobby
We support `Stack Overflow
<https://stackoverflow.com/questions/tagged/aiohttp>`_.
Please add *aiohttp* tag to your question there.
Requirements
============
- Python >= 3.5.3
- async-timeout_
- attrs_
- chardet_
- multidict_
- yarl_
Optionally you may install the cChardet_ and aiodns_ libraries (highly
recommended for sake of speed).
.. _chardet: https://pypi.python.org/pypi/chardet
.. _aiodns: https://pypi.python.org/pypi/aiodns
.. _attrs: https://github.com/python-attrs/attrs
.. _multidict: https://pypi.python.org/pypi/multidict
.. _yarl: https://pypi.python.org/pypi/yarl
.. _async-timeout: https://pypi.python.org/pypi/async_timeout
.. _cChardet: https://pypi.python.org/pypi/cchardet
License
=======
``aiohttp`` is offered under the Apache 2 license.
Keepsafe
========
The aiohttp community would like to thank Keepsafe
(https://www.getkeepsafe.com) for its support in the early days of
the project.
Source code
===========
The latest developer version is available in a GitHub repository:
https://github.com/aio-libs/aiohttp
Benchmarks
==========
If you are interested in efficiency, the AsyncIO community maintains a
list of benchmarks on the official wiki:
https://github.com/python/asyncio/wiki/Benchmarks
=========
Changelog
=========
..
You should *NOT* be adding new change log entries to this file, this
file is managed by towncrier. You *may* edit previous change logs to
fix problems like typo corrections or such.
To add a new change log entry, please see
https://pip.pypa.io/en/latest/development/#adding-a-news-entry
we named the news folder "changes".
WARNING: Don't drop the next directive!
.. towncrier release notes start
3.6.3 (2020-10-12)
==================
Bugfixes
--------
- Pin yarl to ``<1.6.0`` to avoid buggy behavior that will be fixed by the next aiohttp
release.
3.6.2 (2019-10-09)
==================
Features
--------
- Made exceptions pickleable. Also changed the repr of some exceptions.
`#4077 <https://github.com/aio-libs/aiohttp/issues/4077>`_
- Use ``Iterable`` type hint instead of ``Sequence`` for ``Application`` *middleware*
parameter. `#4125 <https://github.com/aio-libs/aiohttp/issues/4125>`_
Bugfixes
--------
- Reset the ``sock_read`` timeout each time data is received for a
``aiohttp.ClientResponse``. `#3808
<https://github.com/aio-libs/aiohttp/issues/3808>`_
- Fix handling of expired cookies so they are not stored in CookieJar.
`#4063 <https://github.com/aio-libs/aiohttp/issues/4063>`_
- Fix misleading message in the string representation of ``ClientConnectorError``;
``self.ssl == None`` means default SSL context, not SSL disabled `#4097
<https://github.com/aio-libs/aiohttp/issues/4097>`_
- Don't clobber HTTP status when using FileResponse.
`#4106 <https://github.com/aio-libs/aiohttp/issues/4106>`_
Improved Documentation
----------------------
- Added minimal required logging configuration to logging documentation.
`#2469 <https://github.com/aio-libs/aiohttp/issues/2469>`_
- Update docs to reflect proxy support.
`#4100 <https://github.com/aio-libs/aiohttp/issues/4100>`_
- Fix typo in code example in testing docs.
`#4108 <https://github.com/aio-libs/aiohttp/issues/4108>`_
Misc
----
- `#4102 <https://github.com/aio-libs/aiohttp/issues/4102>`_
----
3.6.1 (2019-09-19)
==================
Features
--------
- Compatibility with Python 3.8.
`#4056 <https://github.com/aio-libs/aiohttp/issues/4056>`_
Bugfixes
--------
- correct some exception string format
`#4068 <https://github.com/aio-libs/aiohttp/issues/4068>`_
- Emit a warning when ``ssl.OP_NO_COMPRESSION`` is
unavailable because the runtime is built against
an outdated OpenSSL.
`#4052 <https://github.com/aio-libs/aiohttp/issues/4052>`_
- Update multidict requirement to >= 4.5
`#4057 <https://github.com/aio-libs/aiohttp/issues/4057>`_
Improved Documentation
----------------------
- Provide pytest-aiohttp namespace for pytest fixtures in docs.
`#3723 <https://github.com/aio-libs/aiohttp/issues/3723>`_
----
3.6.0 (2019-09-06)
==================
Features
--------
- Add support for Named Pipes (Site and Connector) under Windows. This feature requires
Proactor event loop to work. `#3629
<https://github.com/aio-libs/aiohttp/issues/3629>`_
- Removed ``Transfer-Encoding: chunked`` header from websocket responses to be
compatible with more http proxy servers. `#3798
<https://github.com/aio-libs/aiohttp/issues/3798>`_
- Accept non-GET request for starting websocket handshake on server side.
`#3980 <https://github.com/aio-libs/aiohttp/issues/3980>`_
Bugfixes
--------
- Raise a ClientResponseError instead of an AssertionError for a blank
HTTP Reason Phrase.
`#3532 <https://github.com/aio-libs/aiohttp/issues/3532>`_
- Fix an issue where cookies would sometimes not be set during a redirect.
`#3576 <https://github.com/aio-libs/aiohttp/issues/3576>`_
- Change normalize_path_middleware to use 308 redirect instead of 301.
This behavior should prevent clients from being unable to use PUT/POST
methods on endpoints that are redirected because of a trailing slash.
`#3579 <https://github.com/aio-libs/aiohttp/issues/3579>`_
- Drop the processed task from ``all_tasks()`` list early. It prevents logging about a
task with unhandled exception when the server is used in conjunction with
``asyncio.run()``. `#3587 <https://github.com/aio-libs/aiohttp/issues/3587>`_
- ``Signal`` type annotation changed from ``Signal[Callable[['TraceConfig'],
Awaitable[None]]]`` to ``Signal[Callable[ClientSession, SimpleNamespace, ...]``.
`#3595 <https://github.com/aio-libs/aiohttp/issues/3595>`_
- Use sanitized URL as Location header in redirects
`#3614 <https://github.com/aio-libs/aiohttp/issues/3614>`_
- Improve typing annotations for multipart.py along with changes required
by mypy in files that references multipart.py.
`#3621 <https://github.com/aio-libs/aiohttp/issues/3621>`_
- Close session created inside ``aiohttp.request`` when unhandled exception occurs
`#3628 <https://github.com/aio-libs/aiohttp/issues/3628>`_
- Cleanup per-chunk data in generic data read. Memory leak fixed.
`#3631 <https://github.com/aio-libs/aiohttp/issues/3631>`_
- Use correct type for add_view and family
`#3633 <https://github.com/aio-libs/aiohttp/issues/3633>`_
- Fix _keepalive field in __slots__ of ``RequestHandler``.
`#3644 <https://github.com/aio-libs/aiohttp/issues/3644>`_
- Properly handle ConnectionResetError, to silence the "Cannot write to closing
transport" exception when clients disconnect uncleanly.
`#3648 <https://github.com/aio-libs/aiohttp/issues/3648>`_
- Suppress pytest warnings due to ``test_utils`` classes
`#3660 <https://github.com/aio-libs/aiohttp/issues/3660>`_
- Fix overshadowing of overlapped sub-application prefixes.
`#3701 <https://github.com/aio-libs/aiohttp/issues/3701>`_
- Fixed return type annotation for WSMessage.json()
`#3720 <https://github.com/aio-libs/aiohttp/issues/3720>`_
- Properly expose TooManyRedirects publicly as documented.
`#3818 <https://github.com/aio-libs/aiohttp/issues/3818>`_
- Fix missing brackets for IPv6 in proxy CONNECT request
`#3841 <https://github.com/aio-libs/aiohttp/issues/3841>`_
- Make the signature of ``aiohttp.test_utils.TestClient.request`` match
``asyncio.ClientSession.request`` according to the docs `#3852
<https://github.com/aio-libs/aiohttp/issues/3852>`_
- Use correct style for re-exported imports, makes mypy ``--strict`` mode happy.
`#3868 <https://github.com/aio-libs/aiohttp/issues/3868>`_
- Fixed type annotation for add_view method of UrlDispatcher to accept any subclass of
View `#3880 <https://github.com/aio-libs/aiohttp/issues/3880>`_
- Made cython HTTP parser set Reason-Phrase of the response to an empty string if it is
missing. `#3906 <https://github.com/aio-libs/aiohttp/issues/3906>`_
- Add URL to the string representation of ClientResponseError.
`#3959 <https://github.com/aio-libs/aiohttp/issues/3959>`_
- Accept ``istr`` keys in ``LooseHeaders`` type hints.
`#3976 <https://github.com/aio-libs/aiohttp/issues/3976>`_
- Fixed race conditions in _resolve_host caching and throttling when tracing is enabled.
`#4013 <https://github.com/aio-libs/aiohttp/issues/4013>`_
- For URLs like "unix://localhost/..." set Host HTTP header to "localhost" instead of
"localhost:None". `#4039 <https://github.com/aio-libs/aiohttp/issues/4039>`_
Improved Documentation
----------------------
- Modify documentation for Background Tasks to remove deprecated usage of event loop.
`#3526 <https://github.com/aio-libs/aiohttp/issues/3526>`_
- use ``if __name__ == '__main__':`` in server examples.
`#3775 <https://github.com/aio-libs/aiohttp/issues/3775>`_
- Update documentation reference to the default access logger.
`#3783 <https://github.com/aio-libs/aiohttp/issues/3783>`_
- Improve documentation for ``web.BaseRequest.path`` and ``web.BaseRequest.raw_path``.
`#3791 <https://github.com/aio-libs/aiohttp/issues/3791>`_
- Removed deprecation warning in tracing example docs
`#3964 <https://github.com/aio-libs/aiohttp/issues/3964>`_
----
3.5.4 (2019-01-12)
==================
Bugfixes
--------
- Fix stream ``.read()`` / ``.readany()`` / ``.iter_any()`` which used to return a
partial content only in case of compressed content
`#3525 <https://github.com/aio-libs/aiohttp/issues/3525>`_
3.5.3 (2019-01-10)
==================
Bugfixes
--------
- Fix type stubs for ``aiohttp.web.run_app(access_log=True)`` and fix edge case of
``access_log=True`` and the event loop being in debug mode. `#3504
<https://github.com/aio-libs/aiohttp/issues/3504>`_
- Fix ``aiohttp.ClientTimeout`` type annotations to accept ``None`` for fields
`#3511 <https://github.com/aio-libs/aiohttp/issues/3511>`_
- Send custom per-request cookies even if session jar is empty
`#3515 <https://github.com/aio-libs/aiohttp/issues/3515>`_
- Restore Linux binary wheels publishing on PyPI
----
3.5.2 (2019-01-08)
==================
Features
--------
- ``FileResponse`` from ``web_fileresponse.py`` uses a ``ThreadPoolExecutor`` to work
with files asynchronously. I/O based payloads from ``payload.py`` uses a
``ThreadPoolExecutor`` to work with I/O objects asynchronously. `#3313
<https://github.com/aio-libs/aiohttp/issues/3313>`_
- Internal Server Errors in plain text if the browser does not support HTML.
`#3483 <https://github.com/aio-libs/aiohttp/issues/3483>`_
Bugfixes
--------
- Preserve MultipartWriter parts headers on write. Refactor the way how
``Payload.headers`` are handled. Payload instances now always have headers and
Content-Type defined. Fix Payload Content-Disposition header reset after initial
creation. `#3035 <https://github.com/aio-libs/aiohttp/issues/3035>`_
- Log suppressed exceptions in ``GunicornWebWorker``.
`#3464 <https://github.com/aio-libs/aiohttp/issues/3464>`_
- Remove wildcard imports.
`#3468 <https://github.com/aio-libs/aiohttp/issues/3468>`_
- Use the same task for app initialization and web server handling in gunicorn workers.
It allows to use Python3.7 context vars smoothly.
`#3471 <https://github.com/aio-libs/aiohttp/issues/3471>`_
- Fix handling of chunked+gzipped response when first chunk does not give uncompressed
data `#3477 <https://github.com/aio-libs/aiohttp/issues/3477>`_
- Replace ``collections.MutableMapping`` with ``collections.abc.MutableMapping`` to
avoid a deprecation warning. `#3480
<https://github.com/aio-libs/aiohttp/issues/3480>`_
- ``Payload.size`` type annotation changed from ``Optional[float]`` to
``Optional[int]``. `#3484 <https://github.com/aio-libs/aiohttp/issues/3484>`_
- Ignore done tasks when cancels pending activities on ``web.run_app`` finalization.
`#3497 <https://github.com/aio-libs/aiohttp/issues/3497>`_
Improved Documentation
----------------------
- Add documentation for ``aiohttp.web.HTTPException``.
`#3490 <https://github.com/aio-libs/aiohttp/issues/3490>`_
Misc
----
- `#3487 <https://github.com/aio-libs/aiohttp/issues/3487>`_
----
3.5.1 (2018-12-24)
====================
- Fix a regression about ``ClientSession._requote_redirect_url`` modification in debug
mode.
3.5.0 (2018-12-22)
====================
Features
--------
- The library type annotations are checked in strict mode now.
- Add support for setting cookies for individual request (`#2387
<https://github.com/aio-libs/aiohttp/pull/2387>`_)
- Application.add_domain implementation (`#2809
<https://github.com/aio-libs/aiohttp/pull/2809>`_)
- The default ``app`` in the request returned by ``test_utils.make_mocked_request`` can
now have objects assigned to it and retrieved using the ``[]`` operator. (`#3174
<https://github.com/aio-libs/aiohttp/pull/3174>`_)
- Make ``request.url`` accessible when transport is closed. (`#3177
<https://github.com/aio-libs/aiohttp/pull/3177>`_)
- Add ``zlib_executor_size`` argument to ``Response`` constructor to allow compression
to run in a background executor to avoid blocking the main thread and potentially
triggering health check failures. (`#3205
<https://github.com/aio-libs/aiohttp/pull/3205>`_)
- Enable users to set ``ClientTimeout`` in ``aiohttp.request`` (`#3213
<https://github.com/aio-libs/aiohttp/pull/3213>`_)
- Don't raise a warning if ``NETRC`` environment variable is not set and ``~/.netrc``
file doesn't exist. (`#3267 <https://github.com/aio-libs/aiohttp/pull/3267>`_)
- Add default logging handler to web.run_app If the ``Application.debug``` flag is set
and the default logger ``aiohttp.access`` is used, access logs will now be output
using a *stderr* ``StreamHandler`` if no handlers are attached. Furthermore, if the
default logger has no log level set, the log level will be set to ``DEBUG``. (`#3324
<https://github.com/aio-libs/aiohttp/pull/3324>`_)
- Add method argument to ``session.ws_connect()``. Sometimes server API requires a
different HTTP method for WebSocket connection establishment. For example, ``Docker
exec`` needs POST. (`#3378 <https://github.com/aio-libs/aiohttp/pull/3378>`_)
- Create a task per request handling. (`#3406
<https://github.com/aio-libs/aiohttp/pull/3406>`_)
Bugfixes
--------
- Enable passing ``access_log_class`` via ``handler_args`` (`#3158
<https://github.com/aio-libs/aiohttp/pull/3158>`_)
- Return empty bytes with end-of-chunk marker in empty stream reader. (`#3186
<https://github.com/aio-libs/aiohttp/pull/3186>`_)
- Accept ``CIMultiDictProxy`` instances for ``headers`` argument in ``web.Response``
constructor. (`#3207 <https://github.com/aio-libs/aiohttp/pull/3207>`_)
- Don't uppercase HTTP method in parser (`#3233
<https://github.com/aio-libs/aiohttp/pull/3233>`_)
- Make method match regexp RFC-7230 compliant (`#3235
<https://github.com/aio-libs/aiohttp/pull/3235>`_)
- Add ``app.pre_frozen`` state to properly handle startup signals in
sub-applications. (`#3237 <https://github.com/aio-libs/aiohttp/pull/3237>`_)
- Enhanced parsing and validation of helpers.BasicAuth.decode. (`#3239
<https://github.com/aio-libs/aiohttp/pull/3239>`_)
- Change imports from collections module in preparation for 3.8. (`#3258
<https://github.com/aio-libs/aiohttp/pull/3258>`_)
- Ensure Host header is added first to ClientRequest to better replicate browser (`#3265
<https://github.com/aio-libs/aiohttp/pull/3265>`_)
- Fix forward compatibility with Python 3.8: importing ABCs directly from the
collections module will not be supported anymore. (`#3273
<https://github.com/aio-libs/aiohttp/pull/3273>`_)
- Keep the query string by ``normalize_path_middleware``. (`#3278
<https://github.com/aio-libs/aiohttp/pull/3278>`_)
- Fix missing parameter ``raise_for_status`` for aiohttp.request() (`#3290
<https://github.com/aio-libs/aiohttp/pull/3290>`_)
- Bracket IPv6 addresses in the HOST header (`#3304
<https://github.com/aio-libs/aiohttp/pull/3304>`_)
- Fix default message for server ping and pong frames. (`#3308
<https://github.com/aio-libs/aiohttp/pull/3308>`_)
- Fix tests/test_connector.py typo and tests/autobahn/server.py duplicate loop
def. (`#3337 <https://github.com/aio-libs/aiohttp/pull/3337>`_)
- Fix false-negative indicator end_of_HTTP_chunk in StreamReader.readchunk function
(`#3361 <https://github.com/aio-libs/aiohttp/pull/3361>`_)
- Release HTTP response before raising status exception (`#3364
<https://github.com/aio-libs/aiohttp/pull/3364>`_)
- Fix task cancellation when ``sendfile()`` syscall is used by static file
handling. (`#3383 <https://github.com/aio-libs/aiohttp/pull/3383>`_)
- Fix stack trace for ``asyncio.TimeoutError`` which was not logged, when it is caught
in the handler. (`#3414 <https://github.com/aio-libs/aiohttp/pull/3414>`_)
Improved Documentation
----------------------
- Improve documentation of ``Application.make_handler`` parameters. (`#3152
<https://github.com/aio-libs/aiohttp/pull/3152>`_)
- Fix BaseRequest.raw_headers doc. (`#3215
<https://github.com/aio-libs/aiohttp/pull/3215>`_)
- Fix typo in TypeError exception reason in ``web.Application._handle`` (`#3229
<https://github.com/aio-libs/aiohttp/pull/3229>`_)
- Make server access log format placeholder %b documentation reflect
behavior and docstring. (`#3307 <https://github.com/aio-libs/aiohttp/pull/3307>`_)
Deprecations and Removals
-------------------------
- Deprecate modification of ``session.requote_redirect_url`` (`#2278
<https://github.com/aio-libs/aiohttp/pull/2278>`_)
- Deprecate ``stream.unread_data()`` (`#3260
<https://github.com/aio-libs/aiohttp/pull/3260>`_)
- Deprecated use of boolean in ``resp.enable_compression()`` (`#3318
<https://github.com/aio-libs/aiohttp/pull/3318>`_)
- Encourage creation of aiohttp public objects inside a coroutine (`#3331
<https://github.com/aio-libs/aiohttp/pull/3331>`_)
- Drop dead ``Connection.detach()`` and ``Connection.writer``. Both methods were broken
for more than 2 years. (`#3358 <https://github.com/aio-libs/aiohttp/pull/3358>`_)
- Deprecate ``app.loop``, ``request.loop``, ``client.loop`` and ``connector.loop``
properties. (`#3374 <https://github.com/aio-libs/aiohttp/pull/3374>`_)
- Deprecate explicit debug argument. Use asyncio debug mode instead. (`#3381
<https://github.com/aio-libs/aiohttp/pull/3381>`_)
- Deprecate body parameter in HTTPException (and derived classes) constructor. (`#3385
<https://github.com/aio-libs/aiohttp/pull/3385>`_)
- Deprecate bare connector close, use ``async with connector:`` and ``await
connector.close()`` instead. (`#3417
<https://github.com/aio-libs/aiohttp/pull/3417>`_)
- Deprecate obsolete ``read_timeout`` and ``conn_timeout`` in ``ClientSession``
constructor. (`#3438 <https://github.com/aio-libs/aiohttp/pull/3438>`_)
Misc
----
- #3341, #3351

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Generator: bdist_wheel (0.36.2)
Root-Is-Purelib: false
Tag: cp38-cp38-win32

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matteo_env/Lib/site-packages/aiohttp-3.6.3.dist-info/top_level.txt Normal file
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aiohttp

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matteo_env/Lib/site-packages/aiohttp/__init__.py Normal file
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__version__ = '3.6.3'
from typing import Tuple # noqa
from . import hdrs as hdrs
from .client import BaseConnector as BaseConnector
from .client import ClientConnectionError as ClientConnectionError
from .client import (
ClientConnectorCertificateError as ClientConnectorCertificateError,
)
from .client import ClientConnectorError as ClientConnectorError
from .client import ClientConnectorSSLError as ClientConnectorSSLError
from .client import ClientError as ClientError
from .client import ClientHttpProxyError as ClientHttpProxyError
from .client import ClientOSError as ClientOSError
from .client import ClientPayloadError as ClientPayloadError
from .client import ClientProxyConnectionError as ClientProxyConnectionError
from .client import ClientRequest as ClientRequest
from .client import ClientResponse as ClientResponse
from .client import ClientResponseError as ClientResponseError
from .client import ClientSession as ClientSession
from .client import ClientSSLError as ClientSSLError
from .client import ClientTimeout as ClientTimeout
from .client import ClientWebSocketResponse as ClientWebSocketResponse
from .client import ContentTypeError as ContentTypeError
from .client import Fingerprint as Fingerprint
from .client import InvalidURL as InvalidURL
from .client import NamedPipeConnector as NamedPipeConnector
from .client import RequestInfo as RequestInfo
from .client import ServerConnectionError as ServerConnectionError
from .client import ServerDisconnectedError as ServerDisconnectedError
from .client import ServerFingerprintMismatch as ServerFingerprintMismatch
from .client import ServerTimeoutError as ServerTimeoutError
from .client import TCPConnector as TCPConnector
from .client import TooManyRedirects as TooManyRedirects
from .client import UnixConnector as UnixConnector
from .client import WSServerHandshakeError as WSServerHandshakeError
from .client import request as request
from .cookiejar import CookieJar as CookieJar
from .cookiejar import DummyCookieJar as DummyCookieJar
from .formdata import FormData as FormData
from .helpers import BasicAuth as BasicAuth
from .helpers import ChainMapProxy as ChainMapProxy
from .http import HttpVersion as HttpVersion
from .http import HttpVersion10 as HttpVersion10
from .http import HttpVersion11 as HttpVersion11
from .http import WebSocketError as WebSocketError
from .http import WSCloseCode as WSCloseCode
from .http import WSMessage as WSMessage
from .http import WSMsgType as WSMsgType
from .multipart import (
BadContentDispositionHeader as BadContentDispositionHeader,
)
from .multipart import BadContentDispositionParam as BadContentDispositionParam
from .multipart import BodyPartReader as BodyPartReader
from .multipart import MultipartReader as MultipartReader
from .multipart import MultipartWriter as MultipartWriter
from .multipart import (
content_disposition_filename as content_disposition_filename,
)
from .multipart import parse_content_disposition as parse_content_disposition
from .payload import PAYLOAD_REGISTRY as PAYLOAD_REGISTRY
from .payload import AsyncIterablePayload as AsyncIterablePayload
from .payload import BufferedReaderPayload as BufferedReaderPayload
from .payload import BytesIOPayload as BytesIOPayload
from .payload import BytesPayload as BytesPayload
from .payload import IOBasePayload as IOBasePayload
from .payload import JsonPayload as JsonPayload
from .payload import Payload as Payload
from .payload import StringIOPayload as StringIOPayload
from .payload import StringPayload as StringPayload
from .payload import TextIOPayload as TextIOPayload
from .payload import get_payload as get_payload
from .payload import payload_type as payload_type
from .payload_streamer import streamer as streamer
from .resolver import AsyncResolver as AsyncResolver
from .resolver import DefaultResolver as DefaultResolver
from .resolver import ThreadedResolver as ThreadedResolver
from .signals import Signal as Signal
from .streams import EMPTY_PAYLOAD as EMPTY_PAYLOAD
from .streams import DataQueue as DataQueue
from .streams import EofStream as EofStream
from .streams import FlowControlDataQueue as FlowControlDataQueue
from .streams import StreamReader as StreamReader
from .tracing import TraceConfig as TraceConfig
from .tracing import (
TraceConnectionCreateEndParams as TraceConnectionCreateEndParams,
)
from .tracing import (
TraceConnectionCreateStartParams as TraceConnectionCreateStartParams,
)
from .tracing import (
TraceConnectionQueuedEndParams as TraceConnectionQueuedEndParams,
)
from .tracing import (
TraceConnectionQueuedStartParams as TraceConnectionQueuedStartParams,
)
from .tracing import (
TraceConnectionReuseconnParams as TraceConnectionReuseconnParams,
)
from .tracing import TraceDnsCacheHitParams as TraceDnsCacheHitParams
from .tracing import TraceDnsCacheMissParams as TraceDnsCacheMissParams
from .tracing import (
TraceDnsResolveHostEndParams as TraceDnsResolveHostEndParams,
)
from .tracing import (
TraceDnsResolveHostStartParams as TraceDnsResolveHostStartParams,
)
from .tracing import TraceRequestChunkSentParams as TraceRequestChunkSentParams
from .tracing import TraceRequestEndParams as TraceRequestEndParams
from .tracing import TraceRequestExceptionParams as TraceRequestExceptionParams
from .tracing import TraceRequestRedirectParams as TraceRequestRedirectParams
from .tracing import TraceRequestStartParams as TraceRequestStartParams
from .tracing import (
TraceResponseChunkReceivedParams as TraceResponseChunkReceivedParams,
)
__all__ = (
'hdrs',
# client
'BaseConnector',
'ClientConnectionError',
'ClientConnectorCertificateError',
'ClientConnectorError',
'ClientConnectorSSLError',
'ClientError',
'ClientHttpProxyError',
'ClientOSError',
'ClientPayloadError',
'ClientProxyConnectionError',
'ClientResponse',
'ClientRequest',
'ClientResponseError',
'ClientSSLError',
'ClientSession',
'ClientTimeout',
'ClientWebSocketResponse',
'ContentTypeError',
'Fingerprint',
'InvalidURL',
'RequestInfo',
'ServerConnectionError',
'ServerDisconnectedError',
'ServerFingerprintMismatch',
'ServerTimeoutError',
'TCPConnector',
'TooManyRedirects',
'UnixConnector',
'NamedPipeConnector',
'WSServerHandshakeError',
'request',
# cookiejar
'CookieJar',
'DummyCookieJar',
# formdata
'FormData',
# helpers
'BasicAuth',
'ChainMapProxy',
# http
'HttpVersion',
'HttpVersion10',
'HttpVersion11',
'WSMsgType',
'WSCloseCode',
'WSMessage',
'WebSocketError',
# multipart
'BadContentDispositionHeader',
'BadContentDispositionParam',
'BodyPartReader',
'MultipartReader',
'MultipartWriter',
'content_disposition_filename',
'parse_content_disposition',
# payload
'AsyncIterablePayload',
'BufferedReaderPayload',
'BytesIOPayload',
'BytesPayload',
'IOBasePayload',
'JsonPayload',
'PAYLOAD_REGISTRY',
'Payload',
'StringIOPayload',
'StringPayload',
'TextIOPayload',
'get_payload',
'payload_type',
# payload_streamer
'streamer',
# resolver
'AsyncResolver',
'DefaultResolver',
'ThreadedResolver',
# signals
'Signal',
'DataQueue',
'EMPTY_PAYLOAD',
'EofStream',
'FlowControlDataQueue',
'StreamReader',
# tracing
'TraceConfig',
'TraceConnectionCreateEndParams',
'TraceConnectionCreateStartParams',
'TraceConnectionQueuedEndParams',
'TraceConnectionQueuedStartParams',
'TraceConnectionReuseconnParams',
'TraceDnsCacheHitParams',
'TraceDnsCacheMissParams',
'TraceDnsResolveHostEndParams',
'TraceDnsResolveHostStartParams',
'TraceRequestChunkSentParams',
'TraceRequestEndParams',
'TraceRequestExceptionParams',
'TraceRequestRedirectParams',
'TraceRequestStartParams',
'TraceResponseChunkReceivedParams',
) # type: Tuple[str, ...]
try:
from .worker import GunicornWebWorker, GunicornUVLoopWebWorker # noqa
__all__ += ('GunicornWebWorker', 'GunicornUVLoopWebWorker')
except ImportError: # pragma: no cover
pass

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matteo_env/Lib/site-packages/aiohttp/_cparser.pxd Normal file
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from libc.stdint cimport uint16_t, uint32_t, uint64_t
cdef extern from "../vendor/http-parser/http_parser.h":
ctypedef int (*http_data_cb) (http_parser*,
const char *at,
size_t length) except -1
ctypedef int (*http_cb) (http_parser*) except -1
struct http_parser:
unsigned int type
unsigned int flags
unsigned int state
unsigned int header_state
unsigned int index
uint32_t nread
uint64_t content_length
unsigned short http_major
unsigned short http_minor
unsigned int status_code
unsigned int method
unsigned int http_errno
unsigned int upgrade
void *data
struct http_parser_settings:
http_cb on_message_begin
http_data_cb on_url
http_data_cb on_status
http_data_cb on_header_field
http_data_cb on_header_value
http_cb on_headers_complete
http_data_cb on_body
http_cb on_message_complete
http_cb on_chunk_header
http_cb on_chunk_complete
enum http_parser_type:
HTTP_REQUEST,
HTTP_RESPONSE,
HTTP_BOTH
enum http_errno:
HPE_OK,
HPE_CB_message_begin,
HPE_CB_url,
HPE_CB_header_field,
HPE_CB_header_value,
HPE_CB_headers_complete,
HPE_CB_body,
HPE_CB_message_complete,
HPE_CB_status,
HPE_CB_chunk_header,
HPE_CB_chunk_complete,
HPE_INVALID_EOF_STATE,
HPE_HEADER_OVERFLOW,
HPE_CLOSED_CONNECTION,
HPE_INVALID_VERSION,
HPE_INVALID_STATUS,
HPE_INVALID_METHOD,
HPE_INVALID_URL,
HPE_INVALID_HOST,
HPE_INVALID_PORT,
HPE_INVALID_PATH,
HPE_INVALID_QUERY_STRING,
HPE_INVALID_FRAGMENT,
HPE_LF_EXPECTED,
HPE_INVALID_HEADER_TOKEN,
HPE_INVALID_CONTENT_LENGTH,
HPE_INVALID_CHUNK_SIZE,
HPE_INVALID_CONSTANT,
HPE_INVALID_INTERNAL_STATE,
HPE_STRICT,
HPE_PAUSED,
HPE_UNKNOWN
enum flags:
F_CHUNKED,
F_CONNECTION_KEEP_ALIVE,
F_CONNECTION_CLOSE,
F_CONNECTION_UPGRADE,
F_TRAILING,
F_UPGRADE,
F_SKIPBODY,
F_CONTENTLENGTH
enum http_method:
DELETE, GET, HEAD, POST, PUT, CONNECT, OPTIONS, TRACE, COPY,
LOCK, MKCOL, MOVE, PROPFIND, PROPPATCH, SEARCH, UNLOCK, BIND,
REBIND, UNBIND, ACL, REPORT, MKACTIVITY, CHECKOUT, MERGE,
MSEARCH, NOTIFY, SUBSCRIBE, UNSUBSCRIBE, PATCH, PURGE, MKCALENDAR,
LINK, UNLINK
void http_parser_init(http_parser *parser, http_parser_type type)
size_t http_parser_execute(http_parser *parser,
const http_parser_settings *settings,
const char *data,
size_t len)
int http_should_keep_alive(const http_parser *parser)
void http_parser_settings_init(http_parser_settings *settings)
const char *http_errno_name(http_errno err)
const char *http_errno_description(http_errno err)
const char *http_method_str(http_method m)
# URL Parser
enum http_parser_url_fields:
UF_SCHEMA = 0,
UF_HOST = 1,
UF_PORT = 2,
UF_PATH = 3,
UF_QUERY = 4,
UF_FRAGMENT = 5,
UF_USERINFO = 6,
UF_MAX = 7
struct http_parser_url_field_data:
uint16_t off
uint16_t len
struct http_parser_url:
uint16_t field_set
uint16_t port
http_parser_url_field_data[<int>UF_MAX] field_data
void http_parser_url_init(http_parser_url *u)
int http_parser_parse_url(const char *buf,
size_t buflen,
int is_connect,
http_parser_url *u)

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#ifndef _FIND_HEADERS_H
#define _FIND_HEADERS_H
#ifdef __cplusplus
extern "C" {
#endif
int find_header(const char *str, int size);
#ifdef __cplusplus
}
#endif
#endif

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cdef extern from "_find_header.h":
int find_header(char *, int)

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matteo_env/Lib/site-packages/aiohttp/_frozenlist.pyx Normal file
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from collections.abc import MutableSequence
cdef class FrozenList:
cdef readonly bint frozen
cdef list _items
def __init__(self, items=None):
self.frozen = False
if items is not None:
items = list(items)
else:
items = []
self._items = items
cdef object _check_frozen(self):
if self.frozen:
raise RuntimeError("Cannot modify frozen list.")
cdef inline object _fast_len(self):
return len(self._items)
def freeze(self):
self.frozen = True
def __getitem__(self, index):
return self._items[index]
def __setitem__(self, index, value):
self._check_frozen()
self._items[index] = value
def __delitem__(self, index):
self._check_frozen()
del self._items[index]
def __len__(self):
return self._fast_len()
def __iter__(self):
return self._items.__iter__()
def __reversed__(self):
return self._items.__reversed__()
def __richcmp__(self, other, op):
if op == 0: # <
return list(self) < other
if op == 1: # <=
return list(self) <= other
if op == 2: # ==
return list(self) == other
if op == 3: # !=
return list(self) != other
if op == 4: # >
return list(self) > other
if op == 5: # =>
return list(self) >= other
def insert(self, pos, item):
self._check_frozen()
self._items.insert(pos, item)
def __contains__(self, item):
return item in self._items
def __iadd__(self, items):
self._check_frozen()
self._items += list(items)
return self
def index(self, item):
return self._items.index(item)
def remove(self, item):
self._check_frozen()
self._items.remove(item)
def clear(self):
self._check_frozen()
self._items.clear()
def extend(self, items):
self._check_frozen()
self._items += list(items)
def reverse(self):
self._check_frozen()
self._items.reverse()
def pop(self, index=-1):
self._check_frozen()
return self._items.pop(index)
def append(self, item):
self._check_frozen()
return self._items.append(item)
def count(self, item):
return self._items.count(item)
def __repr__(self):
return '<FrozenList(frozen={}, {!r})>'.format(self.frozen,
self._items)
MutableSequence.register(FrozenList)

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# The file is autogenerated from aiohttp/hdrs.py
# Run ./tools/gen.py to update it after the origin changing.
from . import hdrs
cdef tuple headers = (
hdrs.ACCEPT,
hdrs.ACCEPT_CHARSET,
hdrs.ACCEPT_ENCODING,
hdrs.ACCEPT_LANGUAGE,
hdrs.ACCEPT_RANGES,
hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
hdrs.ACCESS_CONTROL_ALLOW_HEADERS,
hdrs.ACCESS_CONTROL_ALLOW_METHODS,
hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
hdrs.ACCESS_CONTROL_MAX_AGE,
hdrs.ACCESS_CONTROL_REQUEST_HEADERS,
hdrs.ACCESS_CONTROL_REQUEST_METHOD,
hdrs.AGE,
hdrs.ALLOW,
hdrs.AUTHORIZATION,
hdrs.CACHE_CONTROL,
hdrs.CONNECTION,
hdrs.CONTENT_DISPOSITION,
hdrs.CONTENT_ENCODING,
hdrs.CONTENT_LANGUAGE,
hdrs.CONTENT_LENGTH,
hdrs.CONTENT_LOCATION,
hdrs.CONTENT_MD5,
hdrs.CONTENT_RANGE,
hdrs.CONTENT_TRANSFER_ENCODING,
hdrs.CONTENT_TYPE,
hdrs.COOKIE,
hdrs.DATE,
hdrs.DESTINATION,
hdrs.DIGEST,
hdrs.ETAG,
hdrs.EXPECT,
hdrs.EXPIRES,
hdrs.FORWARDED,
hdrs.FROM,
hdrs.HOST,
hdrs.IF_MATCH,
hdrs.IF_MODIFIED_SINCE,
hdrs.IF_NONE_MATCH,
hdrs.IF_RANGE,
hdrs.IF_UNMODIFIED_SINCE,
hdrs.KEEP_ALIVE,
hdrs.LAST_EVENT_ID,
hdrs.LAST_MODIFIED,
hdrs.LINK,
hdrs.LOCATION,
hdrs.MAX_FORWARDS,
hdrs.ORIGIN,
hdrs.PRAGMA,
hdrs.PROXY_AUTHENTICATE,
hdrs.PROXY_AUTHORIZATION,
hdrs.RANGE,
hdrs.REFERER,
hdrs.RETRY_AFTER,
hdrs.SEC_WEBSOCKET_ACCEPT,
hdrs.SEC_WEBSOCKET_EXTENSIONS,
hdrs.SEC_WEBSOCKET_KEY,
hdrs.SEC_WEBSOCKET_KEY1,
hdrs.SEC_WEBSOCKET_PROTOCOL,
hdrs.SEC_WEBSOCKET_VERSION,
hdrs.SERVER,
hdrs.SET_COOKIE,
hdrs.TE,
hdrs.TRAILER,
hdrs.TRANSFER_ENCODING,
hdrs.UPGRADE,
hdrs.URI,
hdrs.USER_AGENT,
hdrs.VARY,
hdrs.VIA,
hdrs.WANT_DIGEST,
hdrs.WARNING,
hdrs.WEBSOCKET,
hdrs.WWW_AUTHENTICATE,
hdrs.X_FORWARDED_FOR,
hdrs.X_FORWARDED_HOST,
hdrs.X_FORWARDED_PROTO,
)

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from typing import Any
class reify:
def __init__(self, wrapped: Any) -> None: ...
def __get__(self, inst: Any, owner: Any) -> Any: ...
def __set__(self, inst: Any, value: Any) -> None: ...

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cdef class reify:
"""Use as a class method decorator. It operates almost exactly like
the Python `@property` decorator, but it puts the result of the
method it decorates into the instance dict after the first call,
effectively replacing the function it decorates with an instance
variable. It is, in Python parlance, a data descriptor.
"""
cdef object wrapped
cdef object name
def __init__(self, wrapped):
self.wrapped = wrapped
self.name = wrapped.__name__
@property
def __doc__(self):
return self.wrapped.__doc__
def __get__(self, inst, owner):
try:
try:
return inst._cache[self.name]
except KeyError:
val = self.wrapped(inst)
inst._cache[self.name] = val
return val
except AttributeError:
if inst is None:
return self
raise
def __set__(self, inst, value):
raise AttributeError("reified property is read-only")

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#cython: language_level=3
#
# Based on https://github.com/MagicStack/httptools
#
from __future__ import absolute_import, print_function
from cpython.mem cimport PyMem_Malloc, PyMem_Free
from libc.string cimport memcpy
from cpython cimport (PyObject_GetBuffer, PyBuffer_Release, PyBUF_SIMPLE,
Py_buffer, PyBytes_AsString, PyBytes_AsStringAndSize)
from multidict import (CIMultiDict as _CIMultiDict,
CIMultiDictProxy as _CIMultiDictProxy)
from yarl import URL as _URL
from aiohttp import hdrs
from .http_exceptions import (
BadHttpMessage, BadStatusLine, InvalidHeader, LineTooLong, InvalidURLError,
PayloadEncodingError, ContentLengthError, TransferEncodingError)
from .http_writer import (HttpVersion as _HttpVersion,
HttpVersion10 as _HttpVersion10,
HttpVersion11 as _HttpVersion11)
from .http_parser import DeflateBuffer as _DeflateBuffer
from .streams import (EMPTY_PAYLOAD as _EMPTY_PAYLOAD,
StreamReader as _StreamReader)
cimport cython
from aiohttp cimport _cparser as cparser
include "_headers.pxi"
from aiohttp cimport _find_header
DEF DEFAULT_FREELIST_SIZE = 250
cdef extern from "Python.h":
int PyByteArray_Resize(object, Py_ssize_t) except -1
Py_ssize_t PyByteArray_Size(object) except -1
char* PyByteArray_AsString(object)
__all__ = ('HttpRequestParser', 'HttpResponseParser',
'RawRequestMessage', 'RawResponseMessage')
cdef object URL = _URL
cdef object URL_build = URL.build
cdef object CIMultiDict = _CIMultiDict
cdef object CIMultiDictProxy = _CIMultiDictProxy
cdef object HttpVersion = _HttpVersion
cdef object HttpVersion10 = _HttpVersion10
cdef object HttpVersion11 = _HttpVersion11
cdef object SEC_WEBSOCKET_KEY1 = hdrs.SEC_WEBSOCKET_KEY1
cdef object CONTENT_ENCODING = hdrs.CONTENT_ENCODING
cdef object EMPTY_PAYLOAD = _EMPTY_PAYLOAD
cdef object StreamReader = _StreamReader
cdef object DeflateBuffer = _DeflateBuffer
cdef inline object extend(object buf, const char* at, size_t length):
cdef Py_ssize_t s
cdef char* ptr
s = PyByteArray_Size(buf)
PyByteArray_Resize(buf, s + length)
ptr = PyByteArray_AsString(buf)
memcpy(ptr + s, at, length)
DEF METHODS_COUNT = 34;
cdef list _http_method = []
for i in range(METHODS_COUNT):
_http_method.append(
cparser.http_method_str(<cparser.http_method> i).decode('ascii'))
cdef inline str http_method_str(int i):
if i < METHODS_COUNT:
return <str>_http_method[i]
else:
return "<unknown>"
cdef inline object find_header(bytes raw_header):
cdef Py_ssize_t size
cdef char *buf
cdef int idx
PyBytes_AsStringAndSize(raw_header, &buf, &size)
idx = _find_header.find_header(buf, size)
if idx == -1:
return raw_header.decode('utf-8', 'surrogateescape')
return headers[idx]
@cython.freelist(DEFAULT_FREELIST_SIZE)
cdef class RawRequestMessage:
cdef readonly str method
cdef readonly str path
cdef readonly object version # HttpVersion
cdef readonly object headers # CIMultiDict
cdef readonly object raw_headers # tuple
cdef readonly object should_close
cdef readonly object compression
cdef readonly object upgrade
cdef readonly object chunked
cdef readonly object url # yarl.URL
def __init__(self, method, path, version, headers, raw_headers,
should_close, compression, upgrade, chunked, url):
self.method = method
self.path = path
self.version = version
self.headers = headers
self.raw_headers = raw_headers
self.should_close = should_close
self.compression = compression
self.upgrade = upgrade
self.chunked = chunked
self.url = url
def __repr__(self):
info = []
info.append(("method", self.method))
info.append(("path", self.path))
info.append(("version", self.version))
info.append(("headers", self.headers))
info.append(("raw_headers", self.raw_headers))
info.append(("should_close", self.should_close))
info.append(("compression", self.compression))
info.append(("upgrade", self.upgrade))
info.append(("chunked", self.chunked))
info.append(("url", self.url))
sinfo = ', '.join(name + '=' + repr(val) for name, val in info)
return '<RawRequestMessage(' + sinfo + ')>'
def _replace(self, **dct):
cdef RawRequestMessage ret
ret = _new_request_message(self.method,
self.path,
self.version,
self.headers,
self.raw_headers,
self.should_close,
self.compression,
self.upgrade,
self.chunked,
self.url)
if "method" in dct:
ret.method = dct["method"]
if "path" in dct:
ret.path = dct["path"]
if "version" in dct:
ret.version = dct["version"]
if "headers" in dct:
ret.headers = dct["headers"]
if "raw_headers" in dct:
ret.raw_headers = dct["raw_headers"]
if "should_close" in dct:
ret.should_close = dct["should_close"]
if "compression" in dct:
ret.compression = dct["compression"]
if "upgrade" in dct:
ret.upgrade = dct["upgrade"]
if "chunked" in dct:
ret.chunked = dct["chunked"]
if "url" in dct:
ret.url = dct["url"]
return ret
cdef _new_request_message(str method,
str path,
object version,
object headers,
object raw_headers,
bint should_close,
object compression,
bint upgrade,
bint chunked,
object url):
cdef RawRequestMessage ret
ret = RawRequestMessage.__new__(RawRequestMessage)
ret.method = method
ret.path = path
ret.version = version
ret.headers = headers
ret.raw_headers = raw_headers
ret.should_close = should_close
ret.compression = compression
ret.upgrade = upgrade
ret.chunked = chunked
ret.url = url
return ret
@cython.freelist(DEFAULT_FREELIST_SIZE)
cdef class RawResponseMessage:
cdef readonly object version # HttpVersion
cdef readonly int code
cdef readonly str reason
cdef readonly object headers # CIMultiDict
cdef readonly object raw_headers # tuple
cdef readonly object should_close
cdef readonly object compression
cdef readonly object upgrade
cdef readonly object chunked
def __init__(self, version, code, reason, headers, raw_headers,
should_close, compression, upgrade, chunked):
self.version = version
self.code = code
self.reason = reason
self.headers = headers
self.raw_headers = raw_headers
self.should_close = should_close
self.compression = compression
self.upgrade = upgrade
self.chunked = chunked
def __repr__(self):
info = []
info.append(("version", self.version))
info.append(("code", self.code))
info.append(("reason", self.reason))
info.append(("headers", self.headers))
info.append(("raw_headers", self.raw_headers))
info.append(("should_close", self.should_close))
info.append(("compression", self.compression))
info.append(("upgrade", self.upgrade))
info.append(("chunked", self.chunked))
sinfo = ', '.join(name + '=' + repr(val) for name, val in info)
return '<RawResponseMessage(' + sinfo + ')>'
cdef _new_response_message(object version,
int code,
str reason,
object headers,
object raw_headers,
bint should_close,
object compression,
bint upgrade,
bint chunked):
cdef RawResponseMessage ret
ret = RawResponseMessage.__new__(RawResponseMessage)
ret.version = version
ret.code = code
ret.reason = reason
ret.headers = headers
ret.raw_headers = raw_headers
ret.should_close = should_close
ret.compression = compression
ret.upgrade = upgrade
ret.chunked = chunked
return ret
@cython.internal
cdef class HttpParser:
cdef:
cparser.http_parser* _cparser
cparser.http_parser_settings* _csettings
bytearray _raw_name
bytearray _raw_value
bint _has_value
object _protocol
object _loop
object _timer
size_t _max_line_size
size_t _max_field_size
size_t _max_headers
bint _response_with_body
bint _started
object _url
bytearray _buf
str _path
str _reason
object _headers
list _raw_headers
bint _upgraded
list _messages
object _payload
bint _payload_error
object _payload_exception
object _last_error
bint _auto_decompress
str _content_encoding
Py_buffer py_buf
def __cinit__(self):
self._cparser = <cparser.http_parser*> \
PyMem_Malloc(sizeof(cparser.http_parser))
if self._cparser is NULL:
raise MemoryError()
self._csettings = <cparser.http_parser_settings*> \
PyMem_Malloc(sizeof(cparser.http_parser_settings))
if self._csettings is NULL:
raise MemoryError()
def __dealloc__(self):
PyMem_Free(self._cparser)
PyMem_Free(self._csettings)
cdef _init(self, cparser.http_parser_type mode,
object protocol, object loop, object timer=None,
size_t max_line_size=8190, size_t max_headers=32768,
size_t max_field_size=8190, payload_exception=None,
bint response_with_body=True, bint auto_decompress=True):
cparser.http_parser_init(self._cparser, mode)
self._cparser.data = <void*>self
self._cparser.content_length = 0
cparser.http_parser_settings_init(self._csettings)
self._protocol = protocol
self._loop = loop
self._timer = timer
self._buf = bytearray()
self._payload = None
self._payload_error = 0
self._payload_exception = payload_exception
self._messages = []
self._raw_name = bytearray()
self._raw_value = bytearray()
self._has_value = False
self._max_line_size = max_line_size
self._max_headers = max_headers
self._max_field_size = max_field_size
self._response_with_body = response_with_body
self._upgraded = False
self._auto_decompress = auto_decompress
self._content_encoding = None
self._csettings.on_url = cb_on_url
self._csettings.on_status = cb_on_status
self._csettings.on_header_field = cb_on_header_field
self._csettings.on_header_value = cb_on_header_value
self._csettings.on_headers_complete = cb_on_headers_complete
self._csettings.on_body = cb_on_body
self._csettings.on_message_begin = cb_on_message_begin
self._csettings.on_message_complete = cb_on_message_complete
self._csettings.on_chunk_header = cb_on_chunk_header
self._csettings.on_chunk_complete = cb_on_chunk_complete
self._last_error = None
cdef _process_header(self):
if self._raw_name:
raw_name = bytes(self._raw_name)
raw_value = bytes(self._raw_value)
name = find_header(raw_name)
value = raw_value.decode('utf-8', 'surrogateescape')
self._headers.add(name, value)
if name is CONTENT_ENCODING:
self._content_encoding = value
PyByteArray_Resize(self._raw_name, 0)
PyByteArray_Resize(self._raw_value, 0)
self._has_value = False
self._raw_headers.append((raw_name, raw_value))
cdef _on_header_field(self, char* at, size_t length):
cdef Py_ssize_t size
cdef char *buf
if self._has_value:
self._process_header()
size = PyByteArray_Size(self._raw_name)
PyByteArray_Resize(self._raw_name, size + length)
buf = PyByteArray_AsString(self._raw_name)
memcpy(buf + size, at, length)
cdef _on_header_value(self, char* at, size_t length):
cdef Py_ssize_t size
cdef char *buf
size = PyByteArray_Size(self._raw_value)
PyByteArray_Resize(self._raw_value, size + length)
buf = PyByteArray_AsString(self._raw_value)
memcpy(buf + size, at, length)
self._has_value = True
cdef _on_headers_complete(self):
self._process_header()
method = http_method_str(self._cparser.method)
should_close = not cparser.http_should_keep_alive(self._cparser)
upgrade = self._cparser.upgrade
chunked = self._cparser.flags & cparser.F_CHUNKED
raw_headers = tuple(self._raw_headers)
headers = CIMultiDictProxy(self._headers)
if upgrade or self._cparser.method == 5: # cparser.CONNECT:
self._upgraded = True
# do not support old websocket spec
if SEC_WEBSOCKET_KEY1 in headers:
raise InvalidHeader(SEC_WEBSOCKET_KEY1)
encoding = None
enc = self._content_encoding
if enc is not None:
self._content_encoding = None
enc = enc.lower()
if enc in ('gzip', 'deflate', 'br'):
encoding = enc
if self._cparser.type == cparser.HTTP_REQUEST:
msg = _new_request_message(
method, self._path,
self.http_version(), headers, raw_headers,
should_close, encoding, upgrade, chunked, self._url)
else:
msg = _new_response_message(
self.http_version(), self._cparser.status_code, self._reason,
headers, raw_headers, should_close, encoding,
upgrade, chunked)
if (self._cparser.content_length > 0 or chunked or
self._cparser.method == 5): # CONNECT: 5
payload = StreamReader(
self._protocol, timer=self._timer, loop=self._loop)
else:
payload = EMPTY_PAYLOAD
self._payload = payload
if encoding is not None and self._auto_decompress:
self._payload = DeflateBuffer(payload, encoding)
if not self._response_with_body:
payload = EMPTY_PAYLOAD
self._messages.append((msg, payload))
cdef _on_message_complete(self):
self._payload.feed_eof()
self._payload = None
cdef _on_chunk_header(self):
self._payload.begin_http_chunk_receiving()
cdef _on_chunk_complete(self):
self._payload.end_http_chunk_receiving()
cdef object _on_status_complete(self):
pass
cdef inline http_version(self):
cdef cparser.http_parser* parser = self._cparser
if parser.http_major == 1:
if parser.http_minor == 0:
return HttpVersion10
elif parser.http_minor == 1:
return HttpVersion11
return HttpVersion(parser.http_major, parser.http_minor)
### Public API ###
def feed_eof(self):
cdef bytes desc
if self._payload is not None:
if self._cparser.flags & cparser.F_CHUNKED:
raise TransferEncodingError(
"Not enough data for satisfy transfer length header.")
elif self._cparser.flags & cparser.F_CONTENTLENGTH:
raise ContentLengthError(
"Not enough data for satisfy content length header.")
elif self._cparser.http_errno != cparser.HPE_OK:
desc = cparser.http_errno_description(
<cparser.http_errno> self._cparser.http_errno)
raise PayloadEncodingError(desc.decode('latin-1'))
else:
self._payload.feed_eof()
elif self._started:
self._on_headers_complete()
if self._messages:
return self._messages[-1][0]
def feed_data(self, data):
cdef:
size_t data_len
size_t nb
PyObject_GetBuffer(data, &self.py_buf, PyBUF_SIMPLE)
data_len = <size_t>self.py_buf.len
nb = cparser.http_parser_execute(
self._cparser,
self._csettings,
<char*>self.py_buf.buf,
data_len)
PyBuffer_Release(&self.py_buf)
# i am not sure about cparser.HPE_INVALID_METHOD,
# seems get err for valid request
# test_client_functional.py::test_post_data_with_bytesio_file
if (self._cparser.http_errno != cparser.HPE_OK and
(self._cparser.http_errno != cparser.HPE_INVALID_METHOD or
self._cparser.method == 0)):
if self._payload_error == 0:
if self._last_error is not None:
ex = self._last_error
self._last_error = None
else:
ex = parser_error_from_errno(
<cparser.http_errno> self._cparser.http_errno)
self._payload = None
raise ex
if self._messages:
messages = self._messages
self._messages = []
else:
messages = ()
if self._upgraded:
return messages, True, data[nb:]
else:
return messages, False, b''
cdef class HttpRequestParser(HttpParser):
def __init__(self, protocol, loop, timer=None,
size_t max_line_size=8190, size_t max_headers=32768,
size_t max_field_size=8190, payload_exception=None,
bint response_with_body=True, bint read_until_eof=False):
self._init(cparser.HTTP_REQUEST, protocol, loop, timer,
max_line_size, max_headers, max_field_size,
payload_exception, response_with_body)
cdef object _on_status_complete(self):
cdef Py_buffer py_buf
if not self._buf:
return
self._path = self._buf.decode('utf-8', 'surrogateescape')
if self._cparser.method == 5: # CONNECT
self._url = URL(self._path)
else:
PyObject_GetBuffer(self._buf, &py_buf, PyBUF_SIMPLE)
try:
self._url = _parse_url(<char*>py_buf.buf,
py_buf.len)
finally:
PyBuffer_Release(&py_buf)
PyByteArray_Resize(self._buf, 0)
cdef class HttpResponseParser(HttpParser):
def __init__(self, protocol, loop, timer=None,
size_t max_line_size=8190, size_t max_headers=32768,
size_t max_field_size=8190, payload_exception=None,
bint response_with_body=True, bint read_until_eof=False,
bint auto_decompress=True):
self._init(cparser.HTTP_RESPONSE, protocol, loop, timer,
max_line_size, max_headers, max_field_size,
payload_exception, response_with_body, auto_decompress)
cdef object _on_status_complete(self):
if self._buf:
self._reason = self._buf.decode('utf-8', 'surrogateescape')
PyByteArray_Resize(self._buf, 0)
else:
self._reason = self._reason or ''
cdef int cb_on_message_begin(cparser.http_parser* parser) except -1:
cdef HttpParser pyparser = <HttpParser>parser.data
pyparser._started = True
pyparser._headers = CIMultiDict()
pyparser._raw_headers = []
PyByteArray_Resize(pyparser._buf, 0)
pyparser._path = None
pyparser._reason = None
return 0
cdef int cb_on_url(cparser.http_parser* parser,
const char *at, size_t length) except -1:
cdef HttpParser pyparser = <HttpParser>parser.data
try:
if length > pyparser._max_line_size:
raise LineTooLong(
'Status line is too long', pyparser._max_line_size, length)
extend(pyparser._buf, at, length)
except BaseException as ex:
pyparser._last_error = ex
return -1
else:
return 0
cdef int cb_on_status(cparser.http_parser* parser,
const char *at, size_t length) except -1:
cdef HttpParser pyparser = <HttpParser>parser.data
cdef str reason
try:
if length > pyparser._max_line_size:
raise LineTooLong(
'Status line is too long', pyparser._max_line_size, length)
extend(pyparser._buf, at, length)
except BaseException as ex:
pyparser._last_error = ex
return -1
else:
return 0
cdef int cb_on_header_field(cparser.http_parser* parser,
const char *at, size_t length) except -1:
cdef HttpParser pyparser = <HttpParser>parser.data
cdef Py_ssize_t size
try:
pyparser._on_status_complete()
size = len(pyparser._raw_name) + length
if size > pyparser._max_field_size:
raise LineTooLong(
'Header name is too long', pyparser._max_field_size, size)
pyparser._on_header_field(at, length)
except BaseException as ex:
pyparser._last_error = ex
return -1
else:
return 0
cdef int cb_on_header_value(cparser.http_parser* parser,
const char *at, size_t length) except -1:
cdef HttpParser pyparser = <HttpParser>parser.data
cdef Py_ssize_t size
try:
size = len(pyparser._raw_value) + length
if size > pyparser._max_field_size:
raise LineTooLong(
'Header value is too long', pyparser._max_field_size, size)
pyparser._on_header_value(at, length)
except BaseException as ex:
pyparser._last_error = ex
return -1
else:
return 0
cdef int cb_on_headers_complete(cparser.http_parser* parser) except -1:
cdef HttpParser pyparser = <HttpParser>parser.data
try:
pyparser._on_status_complete()
pyparser._on_headers_complete()
except BaseException as exc:
pyparser._last_error = exc
return -1
else:
if pyparser._cparser.upgrade or pyparser._cparser.method == 5: # CONNECT
return 2
else:
return 0
cdef int cb_on_body(cparser.http_parser* parser,
const char *at, size_t length) except -1:
cdef HttpParser pyparser = <HttpParser>parser.data
cdef bytes body = at[:length]
try:
pyparser._payload.feed_data(body, length)
except BaseException as exc:
if pyparser._payload_exception is not None:
pyparser._payload.set_exception(pyparser._payload_exception(str(exc)))
else:
pyparser._payload.set_exception(exc)
pyparser._payload_error = 1
return -1
else:
return 0
cdef int cb_on_message_complete(cparser.http_parser* parser) except -1:
cdef HttpParser pyparser = <HttpParser>parser.data
try:
pyparser._started = False
pyparser._on_message_complete()
except BaseException as exc:
pyparser._last_error = exc
return -1
else:
return 0
cdef int cb_on_chunk_header(cparser.http_parser* parser) except -1:
cdef HttpParser pyparser = <HttpParser>parser.data
try:
pyparser._on_chunk_header()
except BaseException as exc:
pyparser._last_error = exc
return -1
else:
return 0
cdef int cb_on_chunk_complete(cparser.http_parser* parser) except -1:
cdef HttpParser pyparser = <HttpParser>parser.data
try:
pyparser._on_chunk_complete()
except BaseException as exc:
pyparser._last_error = exc
return -1
else:
return 0
cdef parser_error_from_errno(cparser.http_errno errno):
cdef bytes desc = cparser.http_errno_description(errno)
if errno in (cparser.HPE_CB_message_begin,
cparser.HPE_CB_url,
cparser.HPE_CB_header_field,
cparser.HPE_CB_header_value,
cparser.HPE_CB_headers_complete,
cparser.HPE_CB_body,
cparser.HPE_CB_message_complete,
cparser.HPE_CB_status,
cparser.HPE_CB_chunk_header,
cparser.HPE_CB_chunk_complete):
cls = BadHttpMessage
elif errno == cparser.HPE_INVALID_STATUS:
cls = BadStatusLine
elif errno == cparser.HPE_INVALID_METHOD:
cls = BadStatusLine
elif errno == cparser.HPE_INVALID_URL:
cls = InvalidURLError
else:
cls = BadHttpMessage
return cls(desc.decode('latin-1'))
def parse_url(url):
cdef:
Py_buffer py_buf
char* buf_data
PyObject_GetBuffer(url, &py_buf, PyBUF_SIMPLE)
try:
buf_data = <char*>py_buf.buf
return _parse_url(buf_data, py_buf.len)
finally:
PyBuffer_Release(&py_buf)
cdef _parse_url(char* buf_data, size_t length):
cdef:
cparser.http_parser_url* parsed
int res
str schema = None
str host = None
object port = None
str path = None
str query = None
str fragment = None
str user = None
str password = None
str userinfo = None
object result = None
int off
int ln
parsed = <cparser.http_parser_url*> \
PyMem_Malloc(sizeof(cparser.http_parser_url))
if parsed is NULL:
raise MemoryError()
cparser.http_parser_url_init(parsed)
try:
res = cparser.http_parser_parse_url(buf_data, length, 0, parsed)
if res == 0:
if parsed.field_set & (1 << cparser.UF_SCHEMA):
off = parsed.field_data[<int>cparser.UF_SCHEMA].off
ln = parsed.field_data[<int>cparser.UF_SCHEMA].len
schema = buf_data[off:off+ln].decode('utf-8', 'surrogateescape')
else:
schema = ''
if parsed.field_set & (1 << cparser.UF_HOST):
off = parsed.field_data[<int>cparser.UF_HOST].off
ln = parsed.field_data[<int>cparser.UF_HOST].len
host = buf_data[off:off+ln].decode('utf-8', 'surrogateescape')
else:
host = ''
if parsed.field_set & (1 << cparser.UF_PORT):
port = parsed.port
if parsed.field_set & (1 << cparser.UF_PATH):
off = parsed.field_data[<int>cparser.UF_PATH].off
ln = parsed.field_data[<int>cparser.UF_PATH].len
path = buf_data[off:off+ln].decode('utf-8', 'surrogateescape')
else:
path = ''
if parsed.field_set & (1 << cparser.UF_QUERY):
off = parsed.field_data[<int>cparser.UF_QUERY].off
ln = parsed.field_data[<int>cparser.UF_QUERY].len
query = buf_data[off:off+ln].decode('utf-8', 'surrogateescape')
else:
query = ''
if parsed.field_set & (1 << cparser.UF_FRAGMENT):
off = parsed.field_data[<int>cparser.UF_FRAGMENT].off
ln = parsed.field_data[<int>cparser.UF_FRAGMENT].len
fragment = buf_data[off:off+ln].decode('utf-8', 'surrogateescape')
else:
fragment = ''
if parsed.field_set & (1 << cparser.UF_USERINFO):
off = parsed.field_data[<int>cparser.UF_USERINFO].off
ln = parsed.field_data[<int>cparser.UF_USERINFO].len
userinfo = buf_data[off:off+ln].decode('utf-8', 'surrogateescape')
user, sep, password = userinfo.partition(':')
return URL_build(scheme=schema,
user=user, password=password, host=host, port=port,
path=path, query=query, fragment=fragment)
else:
raise InvalidURLError("invalid url {!r}".format(buf_data))
finally:
PyMem_Free(parsed)

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from libc.stdint cimport uint8_t, uint64_t
from libc.string cimport memcpy
from cpython.exc cimport PyErr_NoMemory
from cpython.mem cimport PyMem_Malloc, PyMem_Realloc, PyMem_Free
from cpython.bytes cimport PyBytes_FromStringAndSize
from cpython.object cimport PyObject_Str
from multidict import istr
DEF BUF_SIZE = 16 * 1024 # 16KiB
cdef char BUFFER[BUF_SIZE]
cdef object _istr = istr
# ----------------- writer ---------------------------
cdef struct Writer:
char *buf
Py_ssize_t size
Py_ssize_t pos
cdef inline void _init_writer(Writer* writer):
writer.buf = &BUFFER[0]
writer.size = BUF_SIZE
writer.pos = 0
cdef inline void _release_writer(Writer* writer):
if writer.buf != BUFFER:
PyMem_Free(writer.buf)
cdef inline int _write_byte(Writer* writer, uint8_t ch):
cdef char * buf
cdef Py_ssize_t size
if writer.pos == writer.size:
# reallocate
size = writer.size + BUF_SIZE
if writer.buf == BUFFER:
buf = <char*>PyMem_Malloc(size)
if buf == NULL:
PyErr_NoMemory()
return -1
memcpy(buf, writer.buf, writer.size)
else:
buf = <char*>PyMem_Realloc(writer.buf, size)
if buf == NULL:
PyErr_NoMemory()
return -1
writer.buf = buf
writer.size = size
writer.buf[writer.pos] = <char>ch
writer.pos += 1
return 0
cdef inline int _write_utf8(Writer* writer, Py_UCS4 symbol):
cdef uint64_t utf = <uint64_t> symbol
if utf < 0x80:
return _write_byte(writer, <uint8_t>utf)
elif utf < 0x800:
if _write_byte(writer, <uint8_t>(0xc0 | (utf >> 6))) < 0:
return -1
return _write_byte(writer, <uint8_t>(0x80 | (utf & 0x3f)))
elif 0xD800 <= utf <= 0xDFFF:
# surogate pair, ignored
return 0
elif utf < 0x10000:
if _write_byte(writer, <uint8_t>(0xe0 | (utf >> 12))) < 0:
return -1
if _write_byte(writer, <uint8_t>(0x80 | ((utf >> 6) & 0x3f))) < 0:
return -1
return _write_byte(writer, <uint8_t>(0x80 | (utf & 0x3f)))
elif utf > 0x10FFFF:
# symbol is too large
return 0
else:
if _write_byte(writer, <uint8_t>(0xf0 | (utf >> 18))) < 0:
return -1
if _write_byte(writer,
<uint8_t>(0x80 | ((utf >> 12) & 0x3f))) < 0:
return -1
if _write_byte(writer,
<uint8_t>(0x80 | ((utf >> 6) & 0x3f))) < 0:
return -1
return _write_byte(writer, <uint8_t>(0x80 | (utf & 0x3f)))
cdef inline int _write_str(Writer* writer, str s):
cdef Py_UCS4 ch
for ch in s:
if _write_utf8(writer, ch) < 0:
return -1
# --------------- _serialize_headers ----------------------
cdef str to_str(object s):
typ = type(s)
if typ is str:
return <str>s
elif typ is _istr:
return PyObject_Str(s)
elif not isinstance(s, str):
raise TypeError("Cannot serialize non-str key {!r}".format(s))
else:
return str(s)
def _serialize_headers(str status_line, headers):
cdef Writer writer
cdef object key
cdef object val
cdef bytes ret
_init_writer(&writer)
try:
if _write_str(&writer, status_line) < 0:
raise
if _write_byte(&writer, b'\r') < 0:
raise
if _write_byte(&writer, b'\n') < 0:
raise
for key, val in headers.items():
if _write_str(&writer, to_str(key)) < 0:
raise
if _write_byte(&writer, b':') < 0:
raise
if _write_byte(&writer, b' ') < 0:
raise
if _write_str(&writer, to_str(val)) < 0:
raise
if _write_byte(&writer, b'\r') < 0:
raise
if _write_byte(&writer, b'\n') < 0:
raise
if _write_byte(&writer, b'\r') < 0:
raise
if _write_byte(&writer, b'\n') < 0:
raise
return PyBytes_FromStringAndSize(writer.buf, writer.pos)
finally:
_release_writer(&writer)

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from cpython cimport PyBytes_AsString
#from cpython cimport PyByteArray_AsString # cython still not exports that
cdef extern from "Python.h":
char* PyByteArray_AsString(bytearray ba) except NULL
from libc.stdint cimport uint32_t, uint64_t, uintmax_t
def _websocket_mask_cython(object mask, object data):
"""Note, this function mutates its `data` argument
"""
cdef:
Py_ssize_t data_len, i
# bit operations on signed integers are implementation-specific
unsigned char * in_buf
const unsigned char * mask_buf
uint32_t uint32_msk
uint64_t uint64_msk
assert len(mask) == 4
if not isinstance(mask, bytes):
mask = bytes(mask)
if isinstance(data, bytearray):
data = <bytearray>data
else:
data = bytearray(data)
data_len = len(data)
in_buf = <unsigned char*>PyByteArray_AsString(data)
mask_buf = <const unsigned char*>PyBytes_AsString(mask)
uint32_msk = (<uint32_t*>mask_buf)[0]
# TODO: align in_data ptr to achieve even faster speeds
# does it need in python ?! malloc() always aligns to sizeof(long) bytes
if sizeof(size_t) >= 8:
uint64_msk = uint32_msk
uint64_msk = (uint64_msk << 32) | uint32_msk
while data_len >= 8:
(<uint64_t*>in_buf)[0] ^= uint64_msk
in_buf += 8
data_len -= 8
while data_len >= 4:
(<uint32_t*>in_buf)[0] ^= uint32_msk
in_buf += 4
data_len -= 4
for i in range(0, data_len):
in_buf[i] ^= mask_buf[i]

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import asyncio
import logging
from abc import ABC, abstractmethod
from collections.abc import Sized
from http.cookies import BaseCookie, Morsel # noqa
from typing import (
TYPE_CHECKING,
Any,
Awaitable,
Callable,
Dict,
Generator,
Iterable,
List,
Optional,
Tuple,
)
from multidict import CIMultiDict # noqa
from yarl import URL
from .helpers import get_running_loop
from .typedefs import LooseCookies
if TYPE_CHECKING: # pragma: no cover
from .web_request import BaseRequest, Request
from .web_response import StreamResponse
from .web_app import Application
from .web_exceptions import HTTPException
else:
BaseRequest = Request = Application = StreamResponse = None
HTTPException = None
class AbstractRouter(ABC):
def __init__(self) -> None:
self._frozen = False
def post_init(self, app: Application) -> None:
"""Post init stage.
Not an abstract method for sake of backward compatibility,
but if the router wants to be aware of the application
it can override this.
"""
@property
def frozen(self) -> bool:
return self._frozen
def freeze(self) -> None:
"""Freeze router."""
self._frozen = True
@abstractmethod
async def resolve(self, request: Request) -> 'AbstractMatchInfo':
"""Return MATCH_INFO for given request"""
class AbstractMatchInfo(ABC):
@property # pragma: no branch
@abstractmethod
def handler(self) -> Callable[[Request], Awaitable[StreamResponse]]:
"""Execute matched request handler"""
@property
@abstractmethod
def expect_handler(self) -> Callable[[Request], Awaitable[None]]:
"""Expect handler for 100-continue processing"""
@property # pragma: no branch
@abstractmethod
def http_exception(self) -> Optional[HTTPException]:
"""HTTPException instance raised on router's resolving, or None"""
@abstractmethod # pragma: no branch
def get_info(self) -> Dict[str, Any]:
"""Return a dict with additional info useful for introspection"""
@property # pragma: no branch
@abstractmethod
def apps(self) -> Tuple[Application, ...]:
"""Stack of nested applications.
Top level application is left-most element.
"""
@abstractmethod
def add_app(self, app: Application) -> None:
"""Add application to the nested apps stack."""
@abstractmethod
def freeze(self) -> None:
"""Freeze the match info.
The method is called after route resolution.
After the call .add_app() is forbidden.
"""
class AbstractView(ABC):
"""Abstract class based view."""
def __init__(self, request: Request) -> None:
self._request = request
@property
def request(self) -> Request:
"""Request instance."""
return self._request
@abstractmethod
def __await__(self) -> Generator[Any, None, StreamResponse]:
"""Execute the view handler."""
class AbstractResolver(ABC):
"""Abstract DNS resolver."""
@abstractmethod
async def resolve(self, host: str,
port: int, family: int) -> List[Dict[str, Any]]:
"""Return IP address for given hostname"""
@abstractmethod
async def close(self) -> None:
"""Release resolver"""
if TYPE_CHECKING: # pragma: no cover
IterableBase = Iterable[Morsel[str]]
else:
IterableBase = Iterable
class AbstractCookieJar(Sized, IterableBase):
"""Abstract Cookie Jar."""
def __init__(self, *,
loop: Optional[asyncio.AbstractEventLoop]=None) -> None:
self._loop = get_running_loop(loop)
@abstractmethod
def clear(self) -> None:
"""Clear all cookies."""
@abstractmethod
def update_cookies(self,
cookies: LooseCookies,
response_url: URL=URL()) -> None:
"""Update cookies."""
@abstractmethod
def filter_cookies(self, request_url: URL) -> 'BaseCookie[str]':
"""Return the jar's cookies filtered by their attributes."""
class AbstractStreamWriter(ABC):
"""Abstract stream writer."""
buffer_size = 0
output_size = 0
length = 0 # type: Optional[int]
@abstractmethod
async def write(self, chunk: bytes) -> None:
"""Write chunk into stream."""
@abstractmethod
async def write_eof(self, chunk: bytes=b'') -> None:
"""Write last chunk."""
@abstractmethod
async def drain(self) -> None:
"""Flush the write buffer."""
@abstractmethod
def enable_compression(self, encoding: str='deflate') -> None:
"""Enable HTTP body compression"""
@abstractmethod
def enable_chunking(self) -> None:
"""Enable HTTP chunked mode"""
@abstractmethod
async def write_headers(self, status_line: str,
headers: 'CIMultiDict[str]') -> None:
"""Write HTTP headers"""
class AbstractAccessLogger(ABC):
"""Abstract writer to access log."""
def __init__(self, logger: logging.Logger, log_format: str) -> None:
self.logger = logger
self.log_format = log_format
@abstractmethod
def log(self,
request: BaseRequest,
response: StreamResponse,
time: float) -> None:
"""Emit log to logger."""

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import asyncio
from typing import Optional, cast
from .tcp_helpers import tcp_nodelay
class BaseProtocol(asyncio.Protocol):
__slots__ = ('_loop', '_paused', '_drain_waiter',
'_connection_lost', '_reading_paused', 'transport')
def __init__(self, loop: asyncio.AbstractEventLoop) -> None:
self._loop = loop # type: asyncio.AbstractEventLoop
self._paused = False
self._drain_waiter = None # type: Optional[asyncio.Future[None]]
self._connection_lost = False
self._reading_paused = False
self.transport = None # type: Optional[asyncio.Transport]
def pause_writing(self) -> None:
assert not self._paused
self._paused = True
def resume_writing(self) -> None:
assert self._paused
self._paused = False
waiter = self._drain_waiter
if waiter is not None:
self._drain_waiter = None
if not waiter.done():
waiter.set_result(None)
def pause_reading(self) -> None:
if not self._reading_paused and self.transport is not None:
try:
self.transport.pause_reading()
except (AttributeError, NotImplementedError, RuntimeError):
pass
self._reading_paused = True
def resume_reading(self) -> None:
if self._reading_paused and self.transport is not None:
try:
self.transport.resume_reading()
except (AttributeError, NotImplementedError, RuntimeError):
pass
self._reading_paused = False
def connection_made(self, transport: asyncio.BaseTransport) -> None:
tr = cast(asyncio.Transport, transport)
tcp_nodelay(tr, True)
self.transport = tr
def connection_lost(self, exc: Optional[BaseException]) -> None:
self._connection_lost = True
# Wake up the writer if currently paused.
self.transport = None
if not self._paused:
return
waiter = self._drain_waiter
if waiter is None:
return
self._drain_waiter = None
if waiter.done():
return
if exc is None:
waiter.set_result(None)
else:
waiter.set_exception(exc)
async def _drain_helper(self) -> None:
if self._connection_lost:
raise ConnectionResetError('Connection lost')
if not self._paused:
return
waiter = self._drain_waiter
assert waiter is None or waiter.cancelled()
waiter = self._loop.create_future()
self._drain_waiter = waiter
await waiter

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"""HTTP related errors."""
import asyncio
import warnings
from typing import TYPE_CHECKING, Any, Optional, Tuple, Union
from .typedefs import _CIMultiDict
try:
import ssl
SSLContext = ssl.SSLContext
except ImportError: # pragma: no cover
ssl = SSLContext = None # type: ignore
if TYPE_CHECKING: # pragma: no cover
from .client_reqrep import (RequestInfo, ClientResponse, ConnectionKey, # noqa
Fingerprint)
else:
RequestInfo = ClientResponse = ConnectionKey = None
__all__ = (
'ClientError',
'ClientConnectionError',
'ClientOSError', 'ClientConnectorError', 'ClientProxyConnectionError',
'ClientSSLError',
'ClientConnectorSSLError', 'ClientConnectorCertificateError',
'ServerConnectionError', 'ServerTimeoutError', 'ServerDisconnectedError',
'ServerFingerprintMismatch',
'ClientResponseError', 'ClientHttpProxyError',
'WSServerHandshakeError', 'ContentTypeError',
'ClientPayloadError', 'InvalidURL')
class ClientError(Exception):
"""Base class for client connection errors."""
class ClientResponseError(ClientError):
"""Connection error during reading response.
request_info: instance of RequestInfo
"""
def __init__(self, request_info: RequestInfo,
history: Tuple[ClientResponse, ...], *,
code: Optional[int]=None,
status: Optional[int]=None,
message: str='',
headers: Optional[_CIMultiDict]=None) -> None:
self.request_info = request_info
if code is not None:
if status is not None:
raise ValueError(
"Both code and status arguments are provided; "
"code is deprecated, use status instead")
warnings.warn("code argument is deprecated, use status instead",
DeprecationWarning,
stacklevel=2)
if status is not None:
self.status = status
elif code is not None:
self.status = code
else:
self.status = 0
self.message = message
self.headers = headers
self.history = history
self.args = (request_info, history)
def __str__(self) -> str:
return ("%s, message=%r, url=%r" %
(self.status, self.message, self.request_info.real_url))
def __repr__(self) -> str:
args = "%r, %r" % (self.request_info, self.history)
if self.status != 0:
args += ", status=%r" % (self.status,)
if self.message != '':
args += ", message=%r" % (self.message,)
if self.headers is not None:
args += ", headers=%r" % (self.headers,)
return "%s(%s)" % (type(self).__name__, args)
@property
def code(self) -> int:
warnings.warn("code property is deprecated, use status instead",
DeprecationWarning,
stacklevel=2)
return self.status
@code.setter
def code(self, value: int) -> None:
warnings.warn("code property is deprecated, use status instead",
DeprecationWarning,
stacklevel=2)
self.status = value
class ContentTypeError(ClientResponseError):
"""ContentType found is not valid."""
class WSServerHandshakeError(ClientResponseError):
"""websocket server handshake error."""
class ClientHttpProxyError(ClientResponseError):
"""HTTP proxy error.
Raised in :class:`aiohttp.connector.TCPConnector` if
proxy responds with status other than ``200 OK``
on ``CONNECT`` request.
"""
class TooManyRedirects(ClientResponseError):
"""Client was redirected too many times."""
class ClientConnectionError(ClientError):
"""Base class for client socket errors."""
class ClientOSError(ClientConnectionError, OSError):
"""OSError error."""
class ClientConnectorError(ClientOSError):
"""Client connector error.
Raised in :class:`aiohttp.connector.TCPConnector` if
connection to proxy can not be established.
"""
def __init__(self, connection_key: ConnectionKey,
os_error: OSError) -> None:
self._conn_key = connection_key
self._os_error = os_error
super().__init__(os_error.errno, os_error.strerror)
self.args = (connection_key, os_error)
@property
def os_error(self) -> OSError:
return self._os_error
@property
def host(self) -> str:
return self._conn_key.host
@property
def port(self) -> Optional[int]:
return self._conn_key.port
@property
def ssl(self) -> Union[SSLContext, None, bool, 'Fingerprint']:
return self._conn_key.ssl
def __str__(self) -> str:
return ('Cannot connect to host {0.host}:{0.port} ssl:{1} [{2}]'
.format(self, self.ssl if self.ssl is not None else 'default',
self.strerror))
# OSError.__reduce__ does too much black magick
__reduce__ = BaseException.__reduce__
class ClientProxyConnectionError(ClientConnectorError):
"""Proxy connection error.
Raised in :class:`aiohttp.connector.TCPConnector` if
connection to proxy can not be established.
"""
class ServerConnectionError(ClientConnectionError):
"""Server connection errors."""
class ServerDisconnectedError(ServerConnectionError):
"""Server disconnected."""
def __init__(self, message: Optional[str]=None) -> None:
self.message = message
if message is None:
self.args = ()
else:
self.args = (message,)
class ServerTimeoutError(ServerConnectionError, asyncio.TimeoutError):
"""Server timeout error."""
class ServerFingerprintMismatch(ServerConnectionError):
"""SSL certificate does not match expected fingerprint."""
def __init__(self, expected: bytes, got: bytes,
host: str, port: int) -> None:
self.expected = expected
self.got = got
self.host = host
self.port = port
self.args = (expected, got, host, port)
def __repr__(self) -> str:
return '<{} expected={!r} got={!r} host={!r} port={!r}>'.format(
self.__class__.__name__, self.expected, self.got,
self.host, self.port)
class ClientPayloadError(ClientError):
"""Response payload error."""
class InvalidURL(ClientError, ValueError):
"""Invalid URL.
URL used for fetching is malformed, e.g. it doesn't contains host
part."""
# Derive from ValueError for backward compatibility
def __init__(self, url: Any) -> None:
# The type of url is not yarl.URL because the exception can be raised
# on URL(url) call
super().__init__(url)
@property
def url(self) -> Any:
return self.args[0]
def __repr__(self) -> str:
return '<{} {}>'.format(self.__class__.__name__, self.url)
class ClientSSLError(ClientConnectorError):
"""Base error for ssl.*Errors."""
if ssl is not None:
cert_errors = (ssl.CertificateError,)
cert_errors_bases = (ClientSSLError, ssl.CertificateError,)
ssl_errors = (ssl.SSLError,)
ssl_error_bases = (ClientSSLError, ssl.SSLError)
else: # pragma: no cover
cert_errors = tuple()
cert_errors_bases = (ClientSSLError, ValueError,)
ssl_errors = tuple()
ssl_error_bases = (ClientSSLError,)
class ClientConnectorSSLError(*ssl_error_bases): # type: ignore
"""Response ssl error."""
class ClientConnectorCertificateError(*cert_errors_bases): # type: ignore
"""Response certificate error."""
def __init__(self, connection_key:
ConnectionKey, certificate_error: Exception) -> None:
self._conn_key = connection_key
self._certificate_error = certificate_error
self.args = (connection_key, certificate_error)
@property
def certificate_error(self) -> Exception:
return self._certificate_error
@property
def host(self) -> str:
return self._conn_key.host
@property
def port(self) -> Optional[int]:
return self._conn_key.port
@property
def ssl(self) -> bool:
return self._conn_key.is_ssl
def __str__(self) -> str:
return ('Cannot connect to host {0.host}:{0.port} ssl:{0.ssl} '
'[{0.certificate_error.__class__.__name__}: '
'{0.certificate_error.args}]'.format(self))

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import asyncio
from contextlib import suppress
from typing import Any, Optional, Tuple
from .base_protocol import BaseProtocol
from .client_exceptions import (
ClientOSError,
ClientPayloadError,
ServerDisconnectedError,
ServerTimeoutError,
)
from .helpers import BaseTimerContext
from .http import HttpResponseParser, RawResponseMessage
from .streams import EMPTY_PAYLOAD, DataQueue, StreamReader
class ResponseHandler(BaseProtocol,
DataQueue[Tuple[RawResponseMessage, StreamReader]]):
"""Helper class to adapt between Protocol and StreamReader."""
def __init__(self,
loop: asyncio.AbstractEventLoop) -> None:
BaseProtocol.__init__(self, loop=loop)
DataQueue.__init__(self, loop)
self._should_close = False
self._payload = None
self._skip_payload = False
self._payload_parser = None
self._timer = None
self._tail = b''
self._upgraded = False
self._parser = None # type: Optional[HttpResponseParser]
self._read_timeout = None # type: Optional[float]
self._read_timeout_handle = None # type: Optional[asyncio.TimerHandle]
@property
def upgraded(self) -> bool:
return self._upgraded
@property
def should_close(self) -> bool:
if (self._payload is not None and
not self._payload.is_eof() or self._upgraded):
return True
return (self._should_close or self._upgraded or
self.exception() is not None or
self._payload_parser is not None or
len(self) > 0 or bool(self._tail))
def force_close(self) -> None:
self._should_close = True
def close(self) -> None:
transport = self.transport
if transport is not None:
transport.close()
self.transport = None
self._payload = None
self._drop_timeout()
def is_connected(self) -> bool:
return self.transport is not None
def connection_lost(self, exc: Optional[BaseException]) -> None:
self._drop_timeout()
if self._payload_parser is not None:
with suppress(Exception):
self._payload_parser.feed_eof()
uncompleted = None
if self._parser is not None:
try:
uncompleted = self._parser.feed_eof()
except Exception:
if self._payload is not None:
self._payload.set_exception(
ClientPayloadError(
'Response payload is not completed'))
if not self.is_eof():
if isinstance(exc, OSError):
exc = ClientOSError(*exc.args)
if exc is None:
exc = ServerDisconnectedError(uncompleted)
# assigns self._should_close to True as side effect,
# we do it anyway below
self.set_exception(exc)
self._should_close = True
self._parser = None
self._payload = None
self._payload_parser = None
self._reading_paused = False
super().connection_lost(exc)
def eof_received(self) -> None:
# should call parser.feed_eof() most likely
self._drop_timeout()
def pause_reading(self) -> None:
super().pause_reading()
self._drop_timeout()
def resume_reading(self) -> None:
super().resume_reading()
self._reschedule_timeout()
def set_exception(self, exc: BaseException) -> None:
self._should_close = True
self._drop_timeout()
super().set_exception(exc)
def set_parser(self, parser: Any, payload: Any) -> None:
# TODO: actual types are:
# parser: WebSocketReader
# payload: FlowControlDataQueue
# but they are not generi enough
# Need an ABC for both types
self._payload = payload
self._payload_parser = parser
self._drop_timeout()
if self._tail:
data, self._tail = self._tail, b''
self.data_received(data)
def set_response_params(self, *, timer: BaseTimerContext=None,
skip_payload: bool=False,
read_until_eof: bool=False,
auto_decompress: bool=True,
read_timeout: Optional[float]=None) -> None:
self._skip_payload = skip_payload
self._read_timeout = read_timeout
self._reschedule_timeout()
self._parser = HttpResponseParser(
self, self._loop, timer=timer,
payload_exception=ClientPayloadError,
read_until_eof=read_until_eof,
auto_decompress=auto_decompress)
if self._tail:
data, self._tail = self._tail, b''
self.data_received(data)
def _drop_timeout(self) -> None:
if self._read_timeout_handle is not None:
self._read_timeout_handle.cancel()
self._read_timeout_handle = None
def _reschedule_timeout(self) -> None:
timeout = self._read_timeout
if self._read_timeout_handle is not None:
self._read_timeout_handle.cancel()
if timeout:
self._read_timeout_handle = self._loop.call_later(
timeout, self._on_read_timeout)
else:
self._read_timeout_handle = None
def _on_read_timeout(self) -> None:
exc = ServerTimeoutError("Timeout on reading data from socket")
self.set_exception(exc)
if self._payload is not None:
self._payload.set_exception(exc)
def data_received(self, data: bytes) -> None:
self._reschedule_timeout()
if not data:
return
# custom payload parser
if self._payload_parser is not None:
eof, tail = self._payload_parser.feed_data(data)
if eof:
self._payload = None
self._payload_parser = None
if tail:
self.data_received(tail)
return
else:
if self._upgraded or self._parser is None:
# i.e. websocket connection, websocket parser is not set yet
self._tail += data
else:
# parse http messages
try:
messages, upgraded, tail = self._parser.feed_data(data)
except BaseException as exc:
if self.transport is not None:
# connection.release() could be called BEFORE
# data_received(), the transport is already
# closed in this case
self.transport.close()
# should_close is True after the call
self.set_exception(exc)
return
self._upgraded = upgraded
payload = None
for message, payload in messages:
if message.should_close:
self._should_close = True
self._payload = payload
if self._skip_payload or message.code in (204, 304):
self.feed_data((message, EMPTY_PAYLOAD), 0) # type: ignore # noqa
else:
self.feed_data((message, payload), 0)
if payload is not None:
# new message(s) was processed
# register timeout handler unsubscribing
# either on end-of-stream or immediately for
# EMPTY_PAYLOAD
if payload is not EMPTY_PAYLOAD:
payload.on_eof(self._drop_timeout)
else:
self._drop_timeout()
if tail:
if upgraded:
self.data_received(tail)
else:
self._tail = tail

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"""WebSocket client for asyncio."""
import asyncio
from typing import Any, Optional
import async_timeout
from .client_exceptions import ClientError
from .client_reqrep import ClientResponse
from .helpers import call_later, set_result
from .http import (
WS_CLOSED_MESSAGE,
WS_CLOSING_MESSAGE,
WebSocketError,
WSMessage,
WSMsgType,
)
from .http_websocket import WebSocketWriter # WSMessage
from .streams import EofStream, FlowControlDataQueue # noqa
from .typedefs import (
DEFAULT_JSON_DECODER,
DEFAULT_JSON_ENCODER,
JSONDecoder,
JSONEncoder,
)
class ClientWebSocketResponse:
def __init__(self,
reader: 'FlowControlDataQueue[WSMessage]',
writer: WebSocketWriter,
protocol: Optional[str],
response: ClientResponse,
timeout: float,
autoclose: bool,
autoping: bool,
loop: asyncio.AbstractEventLoop,
*,
receive_timeout: Optional[float]=None,
heartbeat: Optional[float]=None,
compress: int=0,
client_notakeover: bool=False) -> None:
self._response = response
self._conn = response.connection
self._writer = writer
self._reader = reader
self._protocol = protocol
self._closed = False
self._closing = False
self._close_code = None # type: Optional[int]
self._timeout = timeout
self._receive_timeout = receive_timeout
self._autoclose = autoclose
self._autoping = autoping
self._heartbeat = heartbeat
self._heartbeat_cb = None
if heartbeat is not None:
self._pong_heartbeat = heartbeat / 2.0
self._pong_response_cb = None
self._loop = loop
self._waiting = None # type: Optional[asyncio.Future[bool]]
self._exception = None # type: Optional[BaseException]
self._compress = compress
self._client_notakeover = client_notakeover
self._reset_heartbeat()
def _cancel_heartbeat(self) -> None:
if self._pong_response_cb is not None:
self._pong_response_cb.cancel()
self._pong_response_cb = None
if self._heartbeat_cb is not None:
self._heartbeat_cb.cancel()
self._heartbeat_cb = None
def _reset_heartbeat(self) -> None:
self._cancel_heartbeat()
if self._heartbeat is not None:
self._heartbeat_cb = call_later(
self._send_heartbeat, self._heartbeat, self._loop)
def _send_heartbeat(self) -> None:
if self._heartbeat is not None and not self._closed:
# fire-and-forget a task is not perfect but maybe ok for
# sending ping. Otherwise we need a long-living heartbeat
# task in the class.
self._loop.create_task(self._writer.ping())
if self._pong_response_cb is not None:
self._pong_response_cb.cancel()
self._pong_response_cb = call_later(
self._pong_not_received, self._pong_heartbeat, self._loop)
def _pong_not_received(self) -> None:
if not self._closed:
self._closed = True
self._close_code = 1006
self._exception = asyncio.TimeoutError()
self._response.close()
@property
def closed(self) -> bool:
return self._closed
@property
def close_code(self) -> Optional[int]:
return self._close_code
@property
def protocol(self) -> Optional[str]:
return self._protocol
@property
def compress(self) -> int:
return self._compress
@property
def client_notakeover(self) -> bool:
return self._client_notakeover
def get_extra_info(self, name: str, default: Any=None) -> Any:
"""extra info from connection transport"""
conn = self._response.connection
if conn is None:
return default
transport = conn.transport
if transport is None:
return default
return transport.get_extra_info(name, default)
def exception(self) -> Optional[BaseException]:
return self._exception
async def ping(self, message: bytes=b'') -> None:
await self._writer.ping(message)
async def pong(self, message: bytes=b'') -> None:
await self._writer.pong(message)
async def send_str(self, data: str,
compress: Optional[int]=None) -> None:
if not isinstance(data, str):
raise TypeError('data argument must be str (%r)' % type(data))
await self._writer.send(data, binary=False, compress=compress)
async def send_bytes(self, data: bytes,
compress: Optional[int]=None) -> None:
if not isinstance(data, (bytes, bytearray, memoryview)):
raise TypeError('data argument must be byte-ish (%r)' %
type(data))
await self._writer.send(data, binary=True, compress=compress)
async def send_json(self, data: Any,
compress: Optional[int]=None,
*, dumps: JSONEncoder=DEFAULT_JSON_ENCODER) -> None:
await self.send_str(dumps(data), compress=compress)
async def close(self, *, code: int=1000, message: bytes=b'') -> bool:
# we need to break `receive()` cycle first,
# `close()` may be called from different task
if self._waiting is not None and not self._closed:
self._reader.feed_data(WS_CLOSING_MESSAGE, 0)
await self._waiting
if not self._closed:
self._cancel_heartbeat()
self._closed = True
try:
await self._writer.close(code, message)
except asyncio.CancelledError:
self._close_code = 1006
self._response.close()
raise
except Exception as exc:
self._close_code = 1006
self._exception = exc
self._response.close()
return True
if self._closing:
self._response.close()
return True
while True:
try:
with async_timeout.timeout(self._timeout, loop=self._loop):
msg = await self._reader.read()
except asyncio.CancelledError:
self._close_code = 1006
self._response.close()
raise
except Exception as exc:
self._close_code = 1006
self._exception = exc
self._response.close()
return True
if msg.type == WSMsgType.CLOSE:
self._close_code = msg.data
self._response.close()
return True
else:
return False
async def receive(self, timeout: Optional[float]=None) -> WSMessage:
while True:
if self._waiting is not None:
raise RuntimeError(
'Concurrent call to receive() is not allowed')
if self._closed:
return WS_CLOSED_MESSAGE
elif self._closing:
await self.close()
return WS_CLOSED_MESSAGE
try:
self._waiting = self._loop.create_future()
try:
with async_timeout.timeout(
timeout or self._receive_timeout,
loop=self._loop):
msg = await self._reader.read()
self._reset_heartbeat()
finally:
waiter = self._waiting
self._waiting = None
set_result(waiter, True)
except (asyncio.CancelledError, asyncio.TimeoutError):
self._close_code = 1006
raise
except EofStream:
self._close_code = 1000
await self.close()
return WSMessage(WSMsgType.CLOSED, None, None)
except ClientError:
self._closed = True
self._close_code = 1006
return WS_CLOSED_MESSAGE
except WebSocketError as exc:
self._close_code = exc.code
await self.close(code=exc.code)
return WSMessage(WSMsgType.ERROR, exc, None)
except Exception as exc:
self._exception = exc
self._closing = True
self._close_code = 1006
await self.close()
return WSMessage(WSMsgType.ERROR, exc, None)
if msg.type == WSMsgType.CLOSE:
self._closing = True
self._close_code = msg.data
if not self._closed and self._autoclose:
await self.close()
elif msg.type == WSMsgType.CLOSING:
self._closing = True
elif msg.type == WSMsgType.PING and self._autoping:
await self.pong(msg.data)
continue
elif msg.type == WSMsgType.PONG and self._autoping:
continue
return msg
async def receive_str(self, *, timeout: Optional[float]=None) -> str:
msg = await self.receive(timeout)
if msg.type != WSMsgType.TEXT:
raise TypeError(
"Received message {}:{!r} is not str".format(msg.type,
msg.data))
return msg.data
async def receive_bytes(self, *, timeout: Optional[float]=None) -> bytes:
msg = await self.receive(timeout)
if msg.type != WSMsgType.BINARY:
raise TypeError(
"Received message {}:{!r} is not bytes".format(msg.type,
msg.data))
return msg.data
async def receive_json(self,
*, loads: JSONDecoder=DEFAULT_JSON_DECODER,
timeout: Optional[float]=None) -> Any:
data = await self.receive_str(timeout=timeout)
return loads(data)
def __aiter__(self) -> 'ClientWebSocketResponse':
return self
async def __anext__(self) -> WSMessage:
msg = await self.receive()
if msg.type in (WSMsgType.CLOSE,
WSMsgType.CLOSING,
WSMsgType.CLOSED):
raise StopAsyncIteration # NOQA
return msg

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import asyncio
import datetime
import os # noqa
import pathlib
import pickle
import re
from collections import defaultdict
from http.cookies import BaseCookie, Morsel, SimpleCookie # noqa
from typing import ( # noqa
DefaultDict,
Dict,
Iterable,
Iterator,
Mapping,
Optional,
Set,
Tuple,
Union,
cast,
)
from yarl import URL
from .abc import AbstractCookieJar
from .helpers import is_ip_address, next_whole_second
from .typedefs import LooseCookies, PathLike
__all__ = ('CookieJar', 'DummyCookieJar')
CookieItem = Union[str, 'Morsel[str]']
class CookieJar(AbstractCookieJar):
"""Implements cookie storage adhering to RFC 6265."""
DATE_TOKENS_RE = re.compile(
r"[\x09\x20-\x2F\x3B-\x40\x5B-\x60\x7B-\x7E]*"
r"(?P<token>[\x00-\x08\x0A-\x1F\d:a-zA-Z\x7F-\xFF]+)")
DATE_HMS_TIME_RE = re.compile(r"(\d{1,2}):(\d{1,2}):(\d{1,2})")
DATE_DAY_OF_MONTH_RE = re.compile(r"(\d{1,2})")
DATE_MONTH_RE = re.compile("(jan)|(feb)|(mar)|(apr)|(may)|(jun)|(jul)|"
"(aug)|(sep)|(oct)|(nov)|(dec)", re.I)
DATE_YEAR_RE = re.compile(r"(\d{2,4})")
MAX_TIME = datetime.datetime.max.replace(
tzinfo=datetime.timezone.utc)
def __init__(self, *, unsafe: bool=False,
loop: Optional[asyncio.AbstractEventLoop]=None) -> None:
super().__init__(loop=loop)
self._cookies = defaultdict(SimpleCookie) #type: DefaultDict[str, SimpleCookie] # noqa
self._host_only_cookies = set() # type: Set[Tuple[str, str]]
self._unsafe = unsafe
self._next_expiration = next_whole_second()
self._expirations = {} # type: Dict[Tuple[str, str], datetime.datetime] # noqa: E501
def save(self, file_path: PathLike) -> None:
file_path = pathlib.Path(file_path)
with file_path.open(mode='wb') as f:
pickle.dump(self._cookies, f, pickle.HIGHEST_PROTOCOL)
def load(self, file_path: PathLike) -> None:
file_path = pathlib.Path(file_path)
with file_path.open(mode='rb') as f:
self._cookies = pickle.load(f)
def clear(self) -> None:
self._cookies.clear()
self._host_only_cookies.clear()
self._next_expiration = next_whole_second()
self._expirations.clear()
def __iter__(self) -> 'Iterator[Morsel[str]]':
self._do_expiration()
for val in self._cookies.values():
yield from val.values()
def __len__(self) -> int:
return sum(1 for i in self)
def _do_expiration(self) -> None:
now = datetime.datetime.now(datetime.timezone.utc)
if self._next_expiration > now:
return
if not self._expirations:
return
next_expiration = self.MAX_TIME
to_del = []
cookies = self._cookies
expirations = self._expirations
for (domain, name), when in expirations.items():
if when <= now:
cookies[domain].pop(name, None)
to_del.append((domain, name))
self._host_only_cookies.discard((domain, name))
else:
next_expiration = min(next_expiration, when)
for key in to_del:
del expirations[key]
try:
self._next_expiration = (next_expiration.replace(microsecond=0) +
datetime.timedelta(seconds=1))
except OverflowError:
self._next_expiration = self.MAX_TIME
def _expire_cookie(self, when: datetime.datetime, domain: str, name: str
) -> None:
self._next_expiration = min(self._next_expiration, when)
self._expirations[(domain, name)] = when
def update_cookies(self,
cookies: LooseCookies,
response_url: URL=URL()) -> None:
"""Update cookies."""
hostname = response_url.raw_host
if not self._unsafe and is_ip_address(hostname):
# Don't accept cookies from IPs
return
if isinstance(cookies, Mapping):
cookies = cookies.items() # type: ignore
for name, cookie in cookies:
if not isinstance(cookie, Morsel):
tmp = SimpleCookie()
tmp[name] = cookie # type: ignore
cookie = tmp[name]
domain = cookie["domain"]
# ignore domains with trailing dots
if domain.endswith('.'):
domain = ""
del cookie["domain"]
if not domain and hostname is not None:
# Set the cookie's domain to the response hostname
# and set its host-only-flag
self._host_only_cookies.add((hostname, name))
domain = cookie["domain"] = hostname
if domain.startswith("."):
# Remove leading dot
domain = domain[1:]
cookie["domain"] = domain
if hostname and not self._is_domain_match(domain, hostname):
# Setting cookies for different domains is not allowed
continue
path = cookie["path"]
if not path or not path.startswith("/"):
# Set the cookie's path to the response path
path = response_url.path
if not path.startswith("/"):
path = "/"
else:
# Cut everything from the last slash to the end
path = "/" + path[1:path.rfind("/")]
cookie["path"] = path
max_age = cookie["max-age"]
if max_age:
try:
delta_seconds = int(max_age)
try:
max_age_expiration = (
datetime.datetime.now(datetime.timezone.utc) +
datetime.timedelta(seconds=delta_seconds))
except OverflowError:
max_age_expiration = self.MAX_TIME
self._expire_cookie(max_age_expiration,
domain, name)
except ValueError:
cookie["max-age"] = ""
else:
expires = cookie["expires"]
if expires:
expire_time = self._parse_date(expires)
if expire_time:
self._expire_cookie(expire_time,
domain, name)
else:
cookie["expires"] = ""
self._cookies[domain][name] = cookie
self._do_expiration()
def filter_cookies(self, request_url: URL=URL()) -> 'BaseCookie[str]':
"""Returns this jar's cookies filtered by their attributes."""
self._do_expiration()
request_url = URL(request_url)
filtered = SimpleCookie()
hostname = request_url.raw_host or ""
is_not_secure = request_url.scheme not in ("https", "wss")
for cookie in self:
name = cookie.key
domain = cookie["domain"]
# Send shared cookies
if not domain:
filtered[name] = cookie.value
continue
if not self._unsafe and is_ip_address(hostname):
continue
if (domain, name) in self._host_only_cookies:
if domain != hostname:
continue
elif not self._is_domain_match(domain, hostname):
continue
if not self._is_path_match(request_url.path, cookie["path"]):
continue
if is_not_secure and cookie["secure"]:
continue
# It's critical we use the Morsel so the coded_value
# (based on cookie version) is preserved
mrsl_val = cast('Morsel[str]', cookie.get(cookie.key, Morsel()))
mrsl_val.set(cookie.key, cookie.value, cookie.coded_value)
filtered[name] = mrsl_val
return filtered
@staticmethod
def _is_domain_match(domain: str, hostname: str) -> bool:
"""Implements domain matching adhering to RFC 6265."""
if hostname == domain:
return True
if not hostname.endswith(domain):
return False
non_matching = hostname[:-len(domain)]
if not non_matching.endswith("."):
return False
return not is_ip_address(hostname)
@staticmethod
def _is_path_match(req_path: str, cookie_path: str) -> bool:
"""Implements path matching adhering to RFC 6265."""
if not req_path.startswith("/"):
req_path = "/"
if req_path == cookie_path:
return True
if not req_path.startswith(cookie_path):
return False
if cookie_path.endswith("/"):
return True
non_matching = req_path[len(cookie_path):]
return non_matching.startswith("/")
@classmethod
def _parse_date(cls, date_str: str) -> Optional[datetime.datetime]:
"""Implements date string parsing adhering to RFC 6265."""
if not date_str:
return None
found_time = False
found_day = False
found_month = False
found_year = False
hour = minute = second = 0
day = 0
month = 0
year = 0
for token_match in cls.DATE_TOKENS_RE.finditer(date_str):
token = token_match.group("token")
if not found_time:
time_match = cls.DATE_HMS_TIME_RE.match(token)
if time_match:
found_time = True
hour, minute, second = [
int(s) for s in time_match.groups()]
continue
if not found_day:
day_match = cls.DATE_DAY_OF_MONTH_RE.match(token)
if day_match:
found_day = True
day = int(day_match.group())
continue
if not found_month:
month_match = cls.DATE_MONTH_RE.match(token)
if month_match:
found_month = True
assert month_match.lastindex is not None
month = month_match.lastindex
continue
if not found_year:
year_match = cls.DATE_YEAR_RE.match(token)
if year_match:
found_year = True
year = int(year_match.group())
if 70 <= year <= 99:
year += 1900
elif 0 <= year <= 69:
year += 2000
if False in (found_day, found_month, found_year, found_time):
return None
if not 1 <= day <= 31:
return None
if year < 1601 or hour > 23 or minute > 59 or second > 59:
return None
return datetime.datetime(year, month, day,
hour, minute, second,
tzinfo=datetime.timezone.utc)
class DummyCookieJar(AbstractCookieJar):
"""Implements a dummy cookie storage.
It can be used with the ClientSession when no cookie processing is needed.
"""
def __init__(self, *,
loop: Optional[asyncio.AbstractEventLoop]=None) -> None:
super().__init__(loop=loop)
def __iter__(self) -> 'Iterator[Morsel[str]]':
while False:
yield None
def __len__(self) -> int:
return 0
def clear(self) -> None:
pass
def update_cookies(self,
cookies: LooseCookies,
response_url: URL=URL()) -> None:
pass
def filter_cookies(self, request_url: URL) -> 'BaseCookie[str]':
return SimpleCookie()

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import io
from typing import Any, Iterable, List, Optional # noqa
from urllib.parse import urlencode
from multidict import MultiDict, MultiDictProxy
from . import hdrs, multipart, payload
from .helpers import guess_filename
from .payload import Payload
__all__ = ('FormData',)
class FormData:
"""Helper class for multipart/form-data and
application/x-www-form-urlencoded body generation."""
def __init__(self, fields:
Iterable[Any]=(),
quote_fields: bool=True,
charset: Optional[str]=None) -> None:
self._writer = multipart.MultipartWriter('form-data')
self._fields = [] # type: List[Any]
self._is_multipart = False
self._quote_fields = quote_fields
self._charset = charset
if isinstance(fields, dict):
fields = list(fields.items())
elif not isinstance(fields, (list, tuple)):
fields = (fields,)
self.add_fields(*fields)
@property
def is_multipart(self) -> bool:
return self._is_multipart
def add_field(self, name: str, value: Any, *,
content_type: Optional[str]=None,
filename: Optional[str]=None,
content_transfer_encoding: Optional[str]=None) -> None:
if isinstance(value, io.IOBase):
self._is_multipart = True
elif isinstance(value, (bytes, bytearray, memoryview)):
if filename is None and content_transfer_encoding is None:
filename = name
type_options = MultiDict({'name': name})
if filename is not None and not isinstance(filename, str):
raise TypeError('filename must be an instance of str. '
'Got: %s' % filename)
if filename is None and isinstance(value, io.IOBase):
filename = guess_filename(value, name)
if filename is not None:
type_options['filename'] = filename
self._is_multipart = True
headers = {}
if content_type is not None:
if not isinstance(content_type, str):
raise TypeError('content_type must be an instance of str. '
'Got: %s' % content_type)
headers[hdrs.CONTENT_TYPE] = content_type
self._is_multipart = True
if content_transfer_encoding is not None:
if not isinstance(content_transfer_encoding, str):
raise TypeError('content_transfer_encoding must be an instance'
' of str. Got: %s' % content_transfer_encoding)
headers[hdrs.CONTENT_TRANSFER_ENCODING] = content_transfer_encoding
self._is_multipart = True
self._fields.append((type_options, headers, value))
def add_fields(self, *fields: Any) -> None:
to_add = list(fields)
while to_add:
rec = to_add.pop(0)
if isinstance(rec, io.IOBase):
k = guess_filename(rec, 'unknown')
self.add_field(k, rec) # type: ignore
elif isinstance(rec, (MultiDictProxy, MultiDict)):
to_add.extend(rec.items())
elif isinstance(rec, (list, tuple)) and len(rec) == 2:
k, fp = rec
self.add_field(k, fp) # type: ignore
else:
raise TypeError('Only io.IOBase, multidict and (name, file) '
'pairs allowed, use .add_field() for passing '
'more complex parameters, got {!r}'
.format(rec))
def _gen_form_urlencoded(self) -> payload.BytesPayload:
# form data (x-www-form-urlencoded)
data = []
for type_options, _, value in self._fields:
data.append((type_options['name'], value))
charset = self._charset if self._charset is not None else 'utf-8'
if charset == 'utf-8':
content_type = 'application/x-www-form-urlencoded'
else:
content_type = ('application/x-www-form-urlencoded; '
'charset=%s' % charset)
return payload.BytesPayload(
urlencode(data, doseq=True, encoding=charset).encode(),
content_type=content_type)
def _gen_form_data(self) -> multipart.MultipartWriter:
"""Encode a list of fields using the multipart/form-data MIME format"""
for dispparams, headers, value in self._fields:
try:
if hdrs.CONTENT_TYPE in headers:
part = payload.get_payload(
value, content_type=headers[hdrs.CONTENT_TYPE],
headers=headers, encoding=self._charset)
else:
part = payload.get_payload(
value, headers=headers, encoding=self._charset)
except Exception as exc:
raise TypeError(
'Can not serialize value type: %r\n '
'headers: %r\n value: %r' % (
type(value), headers, value)) from exc
if dispparams:
part.set_content_disposition(
'form-data', quote_fields=self._quote_fields, **dispparams
)
# FIXME cgi.FieldStorage doesn't likes body parts with
# Content-Length which were sent via chunked transfer encoding
assert part.headers is not None
part.headers.popall(hdrs.CONTENT_LENGTH, None)
self._writer.append_payload(part)
return self._writer
def __call__(self) -> Payload:
if self._is_multipart:
return self._gen_form_data()
else:
return self._gen_form_urlencoded()

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from collections.abc import MutableSequence
from functools import total_ordering
from .helpers import NO_EXTENSIONS
@total_ordering
class FrozenList(MutableSequence):
__slots__ = ('_frozen', '_items')
def __init__(self, items=None):
self._frozen = False
if items is not None:
items = list(items)
else:
items = []
self._items = items
@property
def frozen(self):
return self._frozen
def freeze(self):
self._frozen = True
def __getitem__(self, index):
return self._items[index]
def __setitem__(self, index, value):
if self._frozen:
raise RuntimeError("Cannot modify frozen list.")
self._items[index] = value
def __delitem__(self, index):
if self._frozen:
raise RuntimeError("Cannot modify frozen list.")
del self._items[index]
def __len__(self):
return self._items.__len__()
def __iter__(self):
return self._items.__iter__()
def __reversed__(self):
return self._items.__reversed__()
def __eq__(self, other):
return list(self) == other
def __le__(self, other):
return list(self) <= other
def insert(self, pos, item):
if self._frozen:
raise RuntimeError("Cannot modify frozen list.")
self._items.insert(pos, item)
def __repr__(self):
return '<FrozenList(frozen={}, {!r})>'.format(self._frozen,
self._items)
PyFrozenList = FrozenList
try:
from aiohttp._frozenlist import FrozenList as CFrozenList # type: ignore
if not NO_EXTENSIONS:
FrozenList = CFrozenList # type: ignore
except ImportError: # pragma: no cover
pass

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from typing import (
Generic,
Iterable,
Iterator,
List,
MutableSequence,
Optional,
TypeVar,
Union,
overload,
)
_T = TypeVar('_T')
_Arg = Union[List[_T], Iterable[_T]]
class FrozenList(MutableSequence[_T], Generic[_T]):
def __init__(self, items: Optional[_Arg[_T]]=...) -> None: ...
@property
def frozen(self) -> bool: ...
def freeze(self) -> None: ...
@overload
def __getitem__(self, i: int) -> _T: ...
@overload
def __getitem__(self, s: slice) -> FrozenList[_T]: ...
@overload
def __setitem__(self, i: int, o: _T) -> None: ...
@overload
def __setitem__(self, s: slice, o: Iterable[_T]) -> None: ...
@overload
def __delitem__(self, i: int) -> None: ...
@overload
def __delitem__(self, i: slice) -> None: ...
def __len__(self) -> int: ...
def __iter__(self) -> Iterator[_T]: ...
def __reversed__(self) -> Iterator[_T]: ...
def __eq__(self, other: object) -> bool: ...
def __le__(self, other: FrozenList[_T]) -> bool: ...
def __ne__(self, other: object) -> bool: ...
def __lt__(self, other: FrozenList[_T]) -> bool: ...
def __ge__(self, other: FrozenList[_T]) -> bool: ...
def __gt__(self, other: FrozenList[_T]) -> bool: ...
def insert(self, pos: int, item: _T) -> None: ...
def __repr__(self) -> str: ...
# types for C accelerators are the same
CFrozenList = PyFrozenList = FrozenList

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"""HTTP Headers constants."""
# After changing the file content call ./tools/gen.py
# to regenerate the headers parser
from multidict import istr
METH_ANY = '*'
METH_CONNECT = 'CONNECT'
METH_HEAD = 'HEAD'
METH_GET = 'GET'
METH_DELETE = 'DELETE'
METH_OPTIONS = 'OPTIONS'
METH_PATCH = 'PATCH'
METH_POST = 'POST'
METH_PUT = 'PUT'
METH_TRACE = 'TRACE'
METH_ALL = {METH_CONNECT, METH_HEAD, METH_GET, METH_DELETE,
METH_OPTIONS, METH_PATCH, METH_POST, METH_PUT, METH_TRACE}
ACCEPT = istr('Accept')
ACCEPT_CHARSET = istr('Accept-Charset')
ACCEPT_ENCODING = istr('Accept-Encoding')
ACCEPT_LANGUAGE = istr('Accept-Language')
ACCEPT_RANGES = istr('Accept-Ranges')
ACCESS_CONTROL_MAX_AGE = istr('Access-Control-Max-Age')
ACCESS_CONTROL_ALLOW_CREDENTIALS = istr('Access-Control-Allow-Credentials')
ACCESS_CONTROL_ALLOW_HEADERS = istr('Access-Control-Allow-Headers')
ACCESS_CONTROL_ALLOW_METHODS = istr('Access-Control-Allow-Methods')
ACCESS_CONTROL_ALLOW_ORIGIN = istr('Access-Control-Allow-Origin')
ACCESS_CONTROL_EXPOSE_HEADERS = istr('Access-Control-Expose-Headers')
ACCESS_CONTROL_REQUEST_HEADERS = istr('Access-Control-Request-Headers')
ACCESS_CONTROL_REQUEST_METHOD = istr('Access-Control-Request-Method')
AGE = istr('Age')
ALLOW = istr('Allow')
AUTHORIZATION = istr('Authorization')
CACHE_CONTROL = istr('Cache-Control')
CONNECTION = istr('Connection')
CONTENT_DISPOSITION = istr('Content-Disposition')
CONTENT_ENCODING = istr('Content-Encoding')
CONTENT_LANGUAGE = istr('Content-Language')
CONTENT_LENGTH = istr('Content-Length')
CONTENT_LOCATION = istr('Content-Location')
CONTENT_MD5 = istr('Content-MD5')
CONTENT_RANGE = istr('Content-Range')
CONTENT_TRANSFER_ENCODING = istr('Content-Transfer-Encoding')
CONTENT_TYPE = istr('Content-Type')
COOKIE = istr('Cookie')
DATE = istr('Date')
DESTINATION = istr('Destination')
DIGEST = istr('Digest')
ETAG = istr('Etag')
EXPECT = istr('Expect')
EXPIRES = istr('Expires')
FORWARDED = istr('Forwarded')
FROM = istr('From')
HOST = istr('Host')
IF_MATCH = istr('If-Match')
IF_MODIFIED_SINCE = istr('If-Modified-Since')
IF_NONE_MATCH = istr('If-None-Match')
IF_RANGE = istr('If-Range')
IF_UNMODIFIED_SINCE = istr('If-Unmodified-Since')
KEEP_ALIVE = istr('Keep-Alive')
LAST_EVENT_ID = istr('Last-Event-ID')
LAST_MODIFIED = istr('Last-Modified')
LINK = istr('Link')
LOCATION = istr('Location')
MAX_FORWARDS = istr('Max-Forwards')
ORIGIN = istr('Origin')
PRAGMA = istr('Pragma')
PROXY_AUTHENTICATE = istr('Proxy-Authenticate')
PROXY_AUTHORIZATION = istr('Proxy-Authorization')
RANGE = istr('Range')
REFERER = istr('Referer')
RETRY_AFTER = istr('Retry-After')
SEC_WEBSOCKET_ACCEPT = istr('Sec-WebSocket-Accept')
SEC_WEBSOCKET_VERSION = istr('Sec-WebSocket-Version')
SEC_WEBSOCKET_PROTOCOL = istr('Sec-WebSocket-Protocol')
SEC_WEBSOCKET_EXTENSIONS = istr('Sec-WebSocket-Extensions')
SEC_WEBSOCKET_KEY = istr('Sec-WebSocket-Key')
SEC_WEBSOCKET_KEY1 = istr('Sec-WebSocket-Key1')
SERVER = istr('Server')
SET_COOKIE = istr('Set-Cookie')
TE = istr('TE')
TRAILER = istr('Trailer')
TRANSFER_ENCODING = istr('Transfer-Encoding')
UPGRADE = istr('Upgrade')
WEBSOCKET = istr('WebSocket')
URI = istr('URI')
USER_AGENT = istr('User-Agent')
VARY = istr('Vary')
VIA = istr('Via')
WANT_DIGEST = istr('Want-Digest')
WARNING = istr('Warning')
WWW_AUTHENTICATE = istr('WWW-Authenticate')
X_FORWARDED_FOR = istr('X-Forwarded-For')
X_FORWARDED_HOST = istr('X-Forwarded-Host')
X_FORWARDED_PROTO = istr('X-Forwarded-Proto')

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@ -0,0 +1,715 @@
"""Various helper functions"""
import asyncio
import base64
import binascii
import cgi
import datetime
import functools
import inspect
import netrc
import os
import platform
import re
import sys
import time
import warnings
import weakref
from collections import namedtuple
from contextlib import suppress
from math import ceil
from pathlib import Path
from types import TracebackType
from typing import ( # noqa
Any,
Callable,
Dict,
Iterable,
Iterator,
List,
Mapping,
Optional,
Pattern,
Set,
Tuple,
Type,
TypeVar,
Union,
cast,
)
from urllib.parse import quote
from urllib.request import getproxies
import async_timeout
import attr
from multidict import MultiDict, MultiDictProxy
from yarl import URL
from . import hdrs
from .log import client_logger, internal_logger
from .typedefs import PathLike # noqa
__all__ = ('BasicAuth', 'ChainMapProxy')
PY_36 = sys.version_info >= (3, 6)
PY_37 = sys.version_info >= (3, 7)
PY_38 = sys.version_info >= (3, 8)
if not PY_37:
import idna_ssl
idna_ssl.patch_match_hostname()
try:
from typing import ContextManager
except ImportError:
from typing_extensions import ContextManager
def all_tasks(
loop: Optional[asyncio.AbstractEventLoop] = None
) -> Set['asyncio.Task[Any]']:
tasks = list(asyncio.Task.all_tasks(loop))
return {t for t in tasks if not t.done()}
if PY_37:
all_tasks = getattr(asyncio, 'all_tasks') # noqa
_T = TypeVar('_T')
sentinel = object() # type: Any
NO_EXTENSIONS = bool(os.environ.get('AIOHTTP_NO_EXTENSIONS')) # type: bool
# N.B. sys.flags.dev_mode is available on Python 3.7+, use getattr
# for compatibility with older versions
DEBUG = (getattr(sys.flags, 'dev_mode', False) or
(not sys.flags.ignore_environment and
bool(os.environ.get('PYTHONASYNCIODEBUG')))) # type: bool
CHAR = set(chr(i) for i in range(0, 128))
CTL = set(chr(i) for i in range(0, 32)) | {chr(127), }
SEPARATORS = {'(', ')', '<', '>', '@', ',', ';', ':', '\\', '"', '/', '[', ']',
'?', '=', '{', '}', ' ', chr(9)}
TOKEN = CHAR ^ CTL ^ SEPARATORS
coroutines = asyncio.coroutines
old_debug = coroutines._DEBUG # type: ignore
# prevent "coroutine noop was never awaited" warning.
coroutines._DEBUG = False # type: ignore
@asyncio.coroutine
def noop(*args, **kwargs): # type: ignore
return # type: ignore
async def noop2(*args: Any, **kwargs: Any) -> None:
return
coroutines._DEBUG = old_debug # type: ignore
class BasicAuth(namedtuple('BasicAuth', ['login', 'password', 'encoding'])):
"""Http basic authentication helper."""
def __new__(cls, login: str,
password: str='',
encoding: str='latin1') -> 'BasicAuth':
if login is None:
raise ValueError('None is not allowed as login value')
if password is None:
raise ValueError('None is not allowed as password value')
if ':' in login:
raise ValueError(
'A ":" is not allowed in login (RFC 1945#section-11.1)')
return super().__new__(cls, login, password, encoding)
@classmethod
def decode(cls, auth_header: str, encoding: str='latin1') -> 'BasicAuth':
"""Create a BasicAuth object from an Authorization HTTP header."""
try:
auth_type, encoded_credentials = auth_header.split(' ', 1)
except ValueError:
raise ValueError('Could not parse authorization header.')
if auth_type.lower() != 'basic':
raise ValueError('Unknown authorization method %s' % auth_type)
try:
decoded = base64.b64decode(
encoded_credentials.encode('ascii'), validate=True
).decode(encoding)
except binascii.Error:
raise ValueError('Invalid base64 encoding.')
try:
# RFC 2617 HTTP Authentication
# https://www.ietf.org/rfc/rfc2617.txt
# the colon must be present, but the username and password may be
# otherwise blank.
username, password = decoded.split(':', 1)
except ValueError:
raise ValueError('Invalid credentials.')
return cls(username, password, encoding=encoding)
@classmethod
def from_url(cls, url: URL,
*, encoding: str='latin1') -> Optional['BasicAuth']:
"""Create BasicAuth from url."""
if not isinstance(url, URL):
raise TypeError("url should be yarl.URL instance")
if url.user is None:
return None
return cls(url.user, url.password or '', encoding=encoding)
def encode(self) -> str:
"""Encode credentials."""
creds = ('%s:%s' % (self.login, self.password)).encode(self.encoding)
return 'Basic %s' % base64.b64encode(creds).decode(self.encoding)
def strip_auth_from_url(url: URL) -> Tuple[URL, Optional[BasicAuth]]:
auth = BasicAuth.from_url(url)
if auth is None:
return url, None
else:
return url.with_user(None), auth
def netrc_from_env() -> Optional[netrc.netrc]:
"""Attempt to load the netrc file from the path specified by the env-var
NETRC or in the default location in the user's home directory.
Returns None if it couldn't be found or fails to parse.
"""
netrc_env = os.environ.get('NETRC')
if netrc_env is not None:
netrc_path = Path(netrc_env)
else:
try:
home_dir = Path.home()
except RuntimeError as e: # pragma: no cover
# if pathlib can't resolve home, it may raise a RuntimeError
client_logger.debug('Could not resolve home directory when '
'trying to look for .netrc file: %s', e)
return None
netrc_path = home_dir / (
'_netrc' if platform.system() == 'Windows' else '.netrc')
try:
return netrc.netrc(str(netrc_path))
except netrc.NetrcParseError as e:
client_logger.warning('Could not parse .netrc file: %s', e)
except OSError as e:
# we couldn't read the file (doesn't exist, permissions, etc.)
if netrc_env or netrc_path.is_file():
# only warn if the environment wanted us to load it,
# or it appears like the default file does actually exist
client_logger.warning('Could not read .netrc file: %s', e)
return None
@attr.s(frozen=True, slots=True)
class ProxyInfo:
proxy = attr.ib(type=URL)
proxy_auth = attr.ib(type=Optional[BasicAuth])
def proxies_from_env() -> Dict[str, ProxyInfo]:
proxy_urls = {k: URL(v) for k, v in getproxies().items()
if k in ('http', 'https')}
netrc_obj = netrc_from_env()
stripped = {k: strip_auth_from_url(v) for k, v in proxy_urls.items()}
ret = {}
for proto, val in stripped.items():
proxy, auth = val
if proxy.scheme == 'https':
client_logger.warning(
"HTTPS proxies %s are not supported, ignoring", proxy)
continue
if netrc_obj and auth is None:
auth_from_netrc = None
if proxy.host is not None:
auth_from_netrc = netrc_obj.authenticators(proxy.host)
if auth_from_netrc is not None:
# auth_from_netrc is a (`user`, `account`, `password`) tuple,
# `user` and `account` both can be username,
# if `user` is None, use `account`
*logins, password = auth_from_netrc
login = logins[0] if logins[0] else logins[-1]
auth = BasicAuth(cast(str, login), cast(str, password))
ret[proto] = ProxyInfo(proxy, auth)
return ret
def current_task(loop: Optional[asyncio.AbstractEventLoop]=None) -> asyncio.Task: # type: ignore # noqa # Return type is intentionally Generic here
if PY_37:
return asyncio.current_task(loop=loop) # type: ignore
else:
return asyncio.Task.current_task(loop=loop)
def get_running_loop(
loop: Optional[asyncio.AbstractEventLoop]=None
) -> asyncio.AbstractEventLoop:
if loop is None:
loop = asyncio.get_event_loop()
if not loop.is_running():
warnings.warn("The object should be created from async function",
DeprecationWarning, stacklevel=3)
if loop.get_debug():
internal_logger.warning(
"The object should be created from async function",
stack_info=True)
return loop
def isasyncgenfunction(obj: Any) -> bool:
func = getattr(inspect, 'isasyncgenfunction', None)
if func is not None:
return func(obj)
else:
return False
@attr.s(frozen=True, slots=True)
class MimeType:
type = attr.ib(type=str)
subtype = attr.ib(type=str)
suffix = attr.ib(type=str)
parameters = attr.ib(type=MultiDictProxy) # type: MultiDictProxy[str]
@functools.lru_cache(maxsize=56)
def parse_mimetype(mimetype: str) -> MimeType:
"""Parses a MIME type into its components.
mimetype is a MIME type string.
Returns a MimeType object.
Example:
>>> parse_mimetype('text/html; charset=utf-8')
MimeType(type='text', subtype='html', suffix='',
parameters={'charset': 'utf-8'})
"""
if not mimetype:
return MimeType(type='', subtype='', suffix='',
parameters=MultiDictProxy(MultiDict()))
parts = mimetype.split(';')
params = MultiDict() # type: MultiDict[str]
for item in parts[1:]:
if not item:
continue
key, value = cast(Tuple[str, str],
item.split('=', 1) if '=' in item else (item, ''))
params.add(key.lower().strip(), value.strip(' "'))
fulltype = parts[0].strip().lower()
if fulltype == '*':
fulltype = '*/*'
mtype, stype = (cast(Tuple[str, str], fulltype.split('/', 1))
if '/' in fulltype else (fulltype, ''))
stype, suffix = (cast(Tuple[str, str], stype.split('+', 1))
if '+' in stype else (stype, ''))
return MimeType(type=mtype, subtype=stype, suffix=suffix,
parameters=MultiDictProxy(params))
def guess_filename(obj: Any, default: Optional[str]=None) -> Optional[str]:
name = getattr(obj, 'name', None)
if name and isinstance(name, str) and name[0] != '<' and name[-1] != '>':
return Path(name).name
return default
def content_disposition_header(disptype: str,
quote_fields: bool=True,
**params: str) -> str:
"""Sets ``Content-Disposition`` header.
disptype is a disposition type: inline, attachment, form-data.
Should be valid extension token (see RFC 2183)
params is a dict with disposition params.
"""
if not disptype or not (TOKEN > set(disptype)):
raise ValueError('bad content disposition type {!r}'
''.format(disptype))
value = disptype
if params:
lparams = []
for key, val in params.items():
if not key or not (TOKEN > set(key)):
raise ValueError('bad content disposition parameter'
' {!r}={!r}'.format(key, val))
qval = quote(val, '') if quote_fields else val
lparams.append((key, '"%s"' % qval))
if key == 'filename':
lparams.append(('filename*', "utf-8''" + qval))
sparams = '; '.join('='.join(pair) for pair in lparams)
value = '; '.join((value, sparams))
return value
class reify:
"""Use as a class method decorator. It operates almost exactly like
the Python `@property` decorator, but it puts the result of the
method it decorates into the instance dict after the first call,
effectively replacing the function it decorates with an instance
variable. It is, in Python parlance, a data descriptor.
"""
def __init__(self, wrapped: Callable[..., Any]) -> None:
self.wrapped = wrapped
self.__doc__ = wrapped.__doc__
self.name = wrapped.__name__
def __get__(self, inst: Any, owner: Any) -> Any:
try:
try:
return inst._cache[self.name]
except KeyError:
val = self.wrapped(inst)
inst._cache[self.name] = val
return val
except AttributeError:
if inst is None:
return self
raise
def __set__(self, inst: Any, value: Any) -> None:
raise AttributeError("reified property is read-only")
reify_py = reify
try:
from ._helpers import reify as reify_c
if not NO_EXTENSIONS:
reify = reify_c # type: ignore
except ImportError:
pass
_ipv4_pattern = (r'^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}'
r'(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$')
_ipv6_pattern = (
r'^(?:(?:(?:[A-F0-9]{1,4}:){6}|(?=(?:[A-F0-9]{0,4}:){0,6}'
r'(?:[0-9]{1,3}\.){3}[0-9]{1,3}$)(([0-9A-F]{1,4}:){0,5}|:)'
r'((:[0-9A-F]{1,4}){1,5}:|:)|::(?:[A-F0-9]{1,4}:){5})'
r'(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.){3}'
r'(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])|(?:[A-F0-9]{1,4}:){7}'
r'[A-F0-9]{1,4}|(?=(?:[A-F0-9]{0,4}:){0,7}[A-F0-9]{0,4}$)'
r'(([0-9A-F]{1,4}:){1,7}|:)((:[0-9A-F]{1,4}){1,7}|:)|(?:[A-F0-9]{1,4}:){7}'
r':|:(:[A-F0-9]{1,4}){7})$')
_ipv4_regex = re.compile(_ipv4_pattern)
_ipv6_regex = re.compile(_ipv6_pattern, flags=re.IGNORECASE)
_ipv4_regexb = re.compile(_ipv4_pattern.encode('ascii'))
_ipv6_regexb = re.compile(_ipv6_pattern.encode('ascii'), flags=re.IGNORECASE)
def _is_ip_address(
regex: Pattern[str], regexb: Pattern[bytes],
host: Optional[Union[str, bytes]]) -> bool:
if host is None:
return False
if isinstance(host, str):
return bool(regex.match(host))
elif isinstance(host, (bytes, bytearray, memoryview)):
return bool(regexb.match(host))
else:
raise TypeError("{} [{}] is not a str or bytes"
.format(host, type(host)))
is_ipv4_address = functools.partial(_is_ip_address, _ipv4_regex, _ipv4_regexb)
is_ipv6_address = functools.partial(_is_ip_address, _ipv6_regex, _ipv6_regexb)
def is_ip_address(
host: Optional[Union[str, bytes, bytearray, memoryview]]) -> bool:
return is_ipv4_address(host) or is_ipv6_address(host)
def next_whole_second() -> datetime.datetime:
"""Return current time rounded up to the next whole second."""
return (
datetime.datetime.now(
datetime.timezone.utc).replace(microsecond=0) +
datetime.timedelta(seconds=0)
)
_cached_current_datetime = None # type: Optional[int]
_cached_formatted_datetime = ""
def rfc822_formatted_time() -> str:
global _cached_current_datetime
global _cached_formatted_datetime
now = int(time.time())
if now != _cached_current_datetime:
# Weekday and month names for HTTP date/time formatting;
# always English!
# Tuples are constants stored in codeobject!
_weekdayname = ("Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun")
_monthname = ("", # Dummy so we can use 1-based month numbers
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec")
year, month, day, hh, mm, ss, wd, *tail = time.gmtime(now)
_cached_formatted_datetime = "%s, %02d %3s %4d %02d:%02d:%02d GMT" % (
_weekdayname[wd], day, _monthname[month], year, hh, mm, ss
)
_cached_current_datetime = now
return _cached_formatted_datetime
def _weakref_handle(info): # type: ignore
ref, name = info
ob = ref()
if ob is not None:
with suppress(Exception):
getattr(ob, name)()
def weakref_handle(ob, name, timeout, loop, ceil_timeout=True): # type: ignore
if timeout is not None and timeout > 0:
when = loop.time() + timeout
if ceil_timeout:
when = ceil(when)
return loop.call_at(when, _weakref_handle, (weakref.ref(ob), name))
def call_later(cb, timeout, loop): # type: ignore
if timeout is not None and timeout > 0:
when = ceil(loop.time() + timeout)
return loop.call_at(when, cb)
class TimeoutHandle:
""" Timeout handle """
def __init__(self,
loop: asyncio.AbstractEventLoop,
timeout: Optional[float]) -> None:
self._timeout = timeout
self._loop = loop
self._callbacks = [] # type: List[Tuple[Callable[..., None], Tuple[Any, ...], Dict[str, Any]]] # noqa
def register(self, callback: Callable[..., None],
*args: Any, **kwargs: Any) -> None:
self._callbacks.append((callback, args, kwargs))
def close(self) -> None:
self._callbacks.clear()
def start(self) -> Optional[asyncio.Handle]:
if self._timeout is not None and self._timeout > 0:
at = ceil(self._loop.time() + self._timeout)
return self._loop.call_at(at, self.__call__)
else:
return None
def timer(self) -> 'BaseTimerContext':
if self._timeout is not None and self._timeout > 0:
timer = TimerContext(self._loop)
self.register(timer.timeout)
return timer
else:
return TimerNoop()
def __call__(self) -> None:
for cb, args, kwargs in self._callbacks:
with suppress(Exception):
cb(*args, **kwargs)
self._callbacks.clear()
class BaseTimerContext(ContextManager['BaseTimerContext']):
pass
class TimerNoop(BaseTimerContext):
def __enter__(self) -> BaseTimerContext:
return self
def __exit__(self, exc_type: Optional[Type[BaseException]],
exc_val: Optional[BaseException],
exc_tb: Optional[TracebackType]) -> Optional[bool]:
return False
class TimerContext(BaseTimerContext):
""" Low resolution timeout context manager """
def __init__(self, loop: asyncio.AbstractEventLoop) -> None:
self._loop = loop
self._tasks = [] # type: List[asyncio.Task[Any]]
self._cancelled = False
def __enter__(self) -> BaseTimerContext:
task = current_task(loop=self._loop)
if task is None:
raise RuntimeError('Timeout context manager should be used '
'inside a task')
if self._cancelled:
task.cancel()
raise asyncio.TimeoutError from None
self._tasks.append(task)
return self
def __exit__(self, exc_type: Optional[Type[BaseException]],
exc_val: Optional[BaseException],
exc_tb: Optional[TracebackType]) -> Optional[bool]:
if self._tasks:
self._tasks.pop()
if exc_type is asyncio.CancelledError and self._cancelled:
raise asyncio.TimeoutError from None
return None
def timeout(self) -> None:
if not self._cancelled:
for task in set(self._tasks):
task.cancel()
self._cancelled = True
class CeilTimeout(async_timeout.timeout):
def __enter__(self) -> async_timeout.timeout:
if self._timeout is not None:
self._task = current_task(loop=self._loop)
if self._task is None:
raise RuntimeError(
'Timeout context manager should be used inside a task')
self._cancel_handler = self._loop.call_at(
ceil(self._loop.time() + self._timeout), self._cancel_task)
return self
class HeadersMixin:
ATTRS = frozenset([
'_content_type', '_content_dict', '_stored_content_type'])
_content_type = None # type: Optional[str]
_content_dict = None # type: Optional[Dict[str, str]]
_stored_content_type = sentinel
def _parse_content_type(self, raw: str) -> None:
self._stored_content_type = raw
if raw is None:
# default value according to RFC 2616
self._content_type = 'application/octet-stream'
self._content_dict = {}
else:
self._content_type, self._content_dict = cgi.parse_header(raw)
@property
def content_type(self) -> str:
"""The value of content part for Content-Type HTTP header."""
raw = self._headers.get(hdrs.CONTENT_TYPE) # type: ignore
if self._stored_content_type != raw:
self._parse_content_type(raw)
return self._content_type # type: ignore
@property
def charset(self) -> Optional[str]:
"""The value of charset part for Content-Type HTTP header."""
raw = self._headers.get(hdrs.CONTENT_TYPE) # type: ignore
if self._stored_content_type != raw:
self._parse_content_type(raw)
return self._content_dict.get('charset') # type: ignore
@property
def content_length(self) -> Optional[int]:
"""The value of Content-Length HTTP header."""
content_length = self._headers.get(hdrs.CONTENT_LENGTH) # type: ignore
if content_length is not None:
return int(content_length)
else:
return None
def set_result(fut: 'asyncio.Future[_T]', result: _T) -> None:
if not fut.done():
fut.set_result(result)
def set_exception(fut: 'asyncio.Future[_T]', exc: BaseException) -> None:
if not fut.done():
fut.set_exception(exc)
class ChainMapProxy(Mapping[str, Any]):
__slots__ = ('_maps',)
def __init__(self, maps: Iterable[Mapping[str, Any]]) -> None:
self._maps = tuple(maps)
def __init_subclass__(cls) -> None:
raise TypeError("Inheritance class {} from ChainMapProxy "
"is forbidden".format(cls.__name__))
def __getitem__(self, key: str) -> Any:
for mapping in self._maps:
try:
return mapping[key]
except KeyError:
pass
raise KeyError(key)
def get(self, key: str, default: Any=None) -> Any:
return self[key] if key in self else default
def __len__(self) -> int:
# reuses stored hash values if possible
return len(set().union(*self._maps)) # type: ignore
def __iter__(self) -> Iterator[str]:
d = {} # type: Dict[str, Any]
for mapping in reversed(self._maps):
# reuses stored hash values if possible
d.update(mapping)
return iter(d)
def __contains__(self, key: object) -> bool:
return any(key in m for m in self._maps)
def __bool__(self) -> bool:
return any(self._maps)
def __repr__(self) -> str:
content = ", ".join(map(repr, self._maps))
return 'ChainMapProxy({})'.format(content)

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import http.server
import sys
from typing import Mapping, Tuple # noqa
from . import __version__
from .http_exceptions import HttpProcessingError as HttpProcessingError
from .http_parser import HeadersParser as HeadersParser
from .http_parser import HttpParser as HttpParser
from .http_parser import HttpRequestParser as HttpRequestParser
from .http_parser import HttpResponseParser as HttpResponseParser
from .http_parser import RawRequestMessage as RawRequestMessage
from .http_parser import RawResponseMessage as RawResponseMessage
from .http_websocket import WS_CLOSED_MESSAGE as WS_CLOSED_MESSAGE
from .http_websocket import WS_CLOSING_MESSAGE as WS_CLOSING_MESSAGE
from .http_websocket import WS_KEY as WS_KEY
from .http_websocket import WebSocketError as WebSocketError
from .http_websocket import WebSocketReader as WebSocketReader
from .http_websocket import WebSocketWriter as WebSocketWriter
from .http_websocket import WSCloseCode as WSCloseCode
from .http_websocket import WSMessage as WSMessage
from .http_websocket import WSMsgType as WSMsgType
from .http_websocket import ws_ext_gen as ws_ext_gen
from .http_websocket import ws_ext_parse as ws_ext_parse
from .http_writer import HttpVersion as HttpVersion
from .http_writer import HttpVersion10 as HttpVersion10
from .http_writer import HttpVersion11 as HttpVersion11
from .http_writer import StreamWriter as StreamWriter
__all__ = (
'HttpProcessingError', 'RESPONSES', 'SERVER_SOFTWARE',
# .http_writer
'StreamWriter', 'HttpVersion', 'HttpVersion10', 'HttpVersion11',
# .http_parser
'HeadersParser', 'HttpParser',
'HttpRequestParser', 'HttpResponseParser',
'RawRequestMessage', 'RawResponseMessage',
# .http_websocket
'WS_CLOSED_MESSAGE', 'WS_CLOSING_MESSAGE', 'WS_KEY',
'WebSocketReader', 'WebSocketWriter', 'ws_ext_gen', 'ws_ext_parse',
'WSMessage', 'WebSocketError', 'WSMsgType', 'WSCloseCode',
)
SERVER_SOFTWARE = 'Python/{0[0]}.{0[1]} aiohttp/{1}'.format(
sys.version_info, __version__) # type: str
RESPONSES = http.server.BaseHTTPRequestHandler.responses # type: Mapping[int, Tuple[str, str]] # noqa

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"""Low-level http related exceptions."""
from typing import Optional, Union
from .typedefs import _CIMultiDict
__all__ = ('HttpProcessingError',)
class HttpProcessingError(Exception):
"""HTTP error.
Shortcut for raising HTTP errors with custom code, message and headers.
code: HTTP Error code.
message: (optional) Error message.
headers: (optional) Headers to be sent in response, a list of pairs
"""
code = 0
message = ''
headers = None
def __init__(self, *,
code: Optional[int]=None,
message: str='',
headers: Optional[_CIMultiDict]=None) -> None:
if code is not None:
self.code = code
self.headers = headers
self.message = message
def __str__(self) -> str:
return "%s, message=%r" % (self.code, self.message)
def __repr__(self) -> str:
return "<%s: %s>" % (self.__class__.__name__, self)
class BadHttpMessage(HttpProcessingError):
code = 400
message = 'Bad Request'
def __init__(self, message: str, *,
headers: Optional[_CIMultiDict]=None) -> None:
super().__init__(message=message, headers=headers)
self.args = (message,)
class HttpBadRequest(BadHttpMessage):
code = 400
message = 'Bad Request'
class PayloadEncodingError(BadHttpMessage):
"""Base class for payload errors"""
class ContentEncodingError(PayloadEncodingError):
"""Content encoding error."""
class TransferEncodingError(PayloadEncodingError):
"""transfer encoding error."""
class ContentLengthError(PayloadEncodingError):
"""Not enough data for satisfy content length header."""
class LineTooLong(BadHttpMessage):
def __init__(self, line: str,
limit: str='Unknown',
actual_size: str='Unknown') -> None:
super().__init__(
"Got more than %s bytes (%s) when reading %s." % (
limit, actual_size, line))
self.args = (line, limit, actual_size)
class InvalidHeader(BadHttpMessage):
def __init__(self, hdr: Union[bytes, str]) -> None:
if isinstance(hdr, bytes):
hdr = hdr.decode('utf-8', 'surrogateescape')
super().__init__('Invalid HTTP Header: {}'.format(hdr))
self.hdr = hdr
self.args = (hdr,)
class BadStatusLine(BadHttpMessage):
def __init__(self, line: str='') -> None:
if not isinstance(line, str):
line = repr(line)
self.args = (line,)
self.line = line
__str__ = Exception.__str__
__repr__ = Exception.__repr__
class InvalidURLError(BadHttpMessage):
pass

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import abc
import asyncio
import collections
import re
import string
import zlib
from enum import IntEnum
from typing import Any, List, Optional, Tuple, Type, Union # noqa
from multidict import CIMultiDict, CIMultiDictProxy, istr
from yarl import URL
from . import hdrs
from .base_protocol import BaseProtocol
from .helpers import NO_EXTENSIONS, BaseTimerContext
from .http_exceptions import (
BadStatusLine,
ContentEncodingError,
ContentLengthError,
InvalidHeader,
LineTooLong,
TransferEncodingError,
)
from .http_writer import HttpVersion, HttpVersion10
from .log import internal_logger
from .streams import EMPTY_PAYLOAD, StreamReader
from .typedefs import RawHeaders
try:
import brotli
HAS_BROTLI = True
except ImportError: # pragma: no cover
HAS_BROTLI = False
__all__ = (
'HeadersParser', 'HttpParser', 'HttpRequestParser', 'HttpResponseParser',
'RawRequestMessage', 'RawResponseMessage')
ASCIISET = set(string.printable)
# See https://tools.ietf.org/html/rfc7230#section-3.1.1
# and https://tools.ietf.org/html/rfc7230#appendix-B
#
# method = token
# tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*" / "+" / "-" / "." /
# "^" / "_" / "`" / "|" / "~" / DIGIT / ALPHA
# token = 1*tchar
METHRE = re.compile(r"[!#$%&'*+\-.^_`|~0-9A-Za-z]+")
VERSRE = re.compile(r'HTTP/(\d+).(\d+)')
HDRRE = re.compile(rb'[\x00-\x1F\x7F()<>@,;:\[\]={} \t\\\\\"]')
RawRequestMessage = collections.namedtuple(
'RawRequestMessage',
['method', 'path', 'version', 'headers', 'raw_headers',
'should_close', 'compression', 'upgrade', 'chunked', 'url'])
RawResponseMessage = collections.namedtuple(
'RawResponseMessage',
['version', 'code', 'reason', 'headers', 'raw_headers',
'should_close', 'compression', 'upgrade', 'chunked'])
class ParseState(IntEnum):
PARSE_NONE = 0
PARSE_LENGTH = 1
PARSE_CHUNKED = 2
PARSE_UNTIL_EOF = 3
class ChunkState(IntEnum):
PARSE_CHUNKED_SIZE = 0
PARSE_CHUNKED_CHUNK = 1
PARSE_CHUNKED_CHUNK_EOF = 2
PARSE_MAYBE_TRAILERS = 3
PARSE_TRAILERS = 4
class HeadersParser:
def __init__(self,
max_line_size: int=8190,
max_headers: int=32768,
max_field_size: int=8190) -> None:
self.max_line_size = max_line_size
self.max_headers = max_headers
self.max_field_size = max_field_size
def parse_headers(
self,
lines: List[bytes]
) -> Tuple['CIMultiDictProxy[str]', RawHeaders]:
headers = CIMultiDict() # type: CIMultiDict[str]
raw_headers = []
lines_idx = 1
line = lines[1]
line_count = len(lines)
while line:
# Parse initial header name : value pair.
try:
bname, bvalue = line.split(b':', 1)
except ValueError:
raise InvalidHeader(line) from None
bname = bname.strip(b' \t')
bvalue = bvalue.lstrip()
if HDRRE.search(bname):
raise InvalidHeader(bname)
if len(bname) > self.max_field_size:
raise LineTooLong(
"request header name {}".format(
bname.decode("utf8", "xmlcharrefreplace")),
str(self.max_field_size),
str(len(bname)))
header_length = len(bvalue)
# next line
lines_idx += 1
line = lines[lines_idx]
# consume continuation lines
continuation = line and line[0] in (32, 9) # (' ', '\t')
if continuation:
bvalue_lst = [bvalue]
while continuation:
header_length += len(line)
if header_length > self.max_field_size:
raise LineTooLong(
'request header field {}'.format(
bname.decode("utf8", "xmlcharrefreplace")),
str(self.max_field_size),
str(header_length))
bvalue_lst.append(line)
# next line
lines_idx += 1
if lines_idx < line_count:
line = lines[lines_idx]
if line:
continuation = line[0] in (32, 9) # (' ', '\t')
else:
line = b''
break
bvalue = b''.join(bvalue_lst)
else:
if header_length > self.max_field_size:
raise LineTooLong(
'request header field {}'.format(
bname.decode("utf8", "xmlcharrefreplace")),
str(self.max_field_size),
str(header_length))
bvalue = bvalue.strip()
name = bname.decode('utf-8', 'surrogateescape')
value = bvalue.decode('utf-8', 'surrogateescape')
headers.add(name, value)
raw_headers.append((bname, bvalue))
return (CIMultiDictProxy(headers), tuple(raw_headers))
class HttpParser(abc.ABC):
def __init__(self, protocol: Optional[BaseProtocol]=None,
loop: Optional[asyncio.AbstractEventLoop]=None,
max_line_size: int=8190,
max_headers: int=32768,
max_field_size: int=8190,
timer: Optional[BaseTimerContext]=None,
code: Optional[int]=None,
method: Optional[str]=None,
readall: bool=False,
payload_exception: Optional[Type[BaseException]]=None,
response_with_body: bool=True,
read_until_eof: bool=False,
auto_decompress: bool=True) -> None:
self.protocol = protocol
self.loop = loop
self.max_line_size = max_line_size
self.max_headers = max_headers
self.max_field_size = max_field_size
self.timer = timer
self.code = code
self.method = method
self.readall = readall
self.payload_exception = payload_exception
self.response_with_body = response_with_body
self.read_until_eof = read_until_eof
self._lines = [] # type: List[bytes]
self._tail = b''
self._upgraded = False
self._payload = None
self._payload_parser = None # type: Optional[HttpPayloadParser]
self._auto_decompress = auto_decompress
self._headers_parser = HeadersParser(max_line_size,
max_headers,
max_field_size)
@abc.abstractmethod
def parse_message(self, lines: List[bytes]) -> Any:
pass
def feed_eof(self) -> Any:
if self._payload_parser is not None:
self._payload_parser.feed_eof()
self._payload_parser = None
else:
# try to extract partial message
if self._tail:
self._lines.append(self._tail)
if self._lines:
if self._lines[-1] != '\r\n':
self._lines.append(b'')
try:
return self.parse_message(self._lines)
except Exception:
return None
def feed_data(
self,
data: bytes,
SEP: bytes=b'\r\n',
EMPTY: bytes=b'',
CONTENT_LENGTH: istr=hdrs.CONTENT_LENGTH,
METH_CONNECT: str=hdrs.METH_CONNECT,
SEC_WEBSOCKET_KEY1: istr=hdrs.SEC_WEBSOCKET_KEY1
) -> Tuple[List[Any], bool, bytes]:
messages = []
if self._tail:
data, self._tail = self._tail + data, b''
data_len = len(data)
start_pos = 0
loop = self.loop
while start_pos < data_len:
# read HTTP message (request/response line + headers), \r\n\r\n
# and split by lines
if self._payload_parser is None and not self._upgraded:
pos = data.find(SEP, start_pos)
# consume \r\n
if pos == start_pos and not self._lines:
start_pos = pos + 2
continue
if pos >= start_pos:
# line found
self._lines.append(data[start_pos:pos])
start_pos = pos + 2
# \r\n\r\n found
if self._lines[-1] == EMPTY:
try:
msg = self.parse_message(self._lines)
finally:
self._lines.clear()
# payload length
length = msg.headers.get(CONTENT_LENGTH)
if length is not None:
try:
length = int(length)
except ValueError:
raise InvalidHeader(CONTENT_LENGTH)
if length < 0:
raise InvalidHeader(CONTENT_LENGTH)
# do not support old websocket spec
if SEC_WEBSOCKET_KEY1 in msg.headers:
raise InvalidHeader(SEC_WEBSOCKET_KEY1)
self._upgraded = msg.upgrade
method = getattr(msg, 'method', self.method)
assert self.protocol is not None
# calculate payload
if ((length is not None and length > 0) or
msg.chunked and not msg.upgrade):
payload = StreamReader(
self.protocol, timer=self.timer, loop=loop)
payload_parser = HttpPayloadParser(
payload, length=length,
chunked=msg.chunked, method=method,
compression=msg.compression,
code=self.code, readall=self.readall,
response_with_body=self.response_with_body,
auto_decompress=self._auto_decompress)
if not payload_parser.done:
self._payload_parser = payload_parser
elif method == METH_CONNECT:
payload = StreamReader(
self.protocol, timer=self.timer, loop=loop)
self._upgraded = True
self._payload_parser = HttpPayloadParser(
payload, method=msg.method,
compression=msg.compression, readall=True,
auto_decompress=self._auto_decompress)
else:
if (getattr(msg, 'code', 100) >= 199 and
length is None and self.read_until_eof):
payload = StreamReader(
self.protocol, timer=self.timer, loop=loop)
payload_parser = HttpPayloadParser(
payload, length=length,
chunked=msg.chunked, method=method,
compression=msg.compression,
code=self.code, readall=True,
response_with_body=self.response_with_body,
auto_decompress=self._auto_decompress)
if not payload_parser.done:
self._payload_parser = payload_parser
else:
payload = EMPTY_PAYLOAD # type: ignore
messages.append((msg, payload))
else:
self._tail = data[start_pos:]
data = EMPTY
break
# no parser, just store
elif self._payload_parser is None and self._upgraded:
assert not self._lines
break
# feed payload
elif data and start_pos < data_len:
assert not self._lines
assert self._payload_parser is not None
try:
eof, data = self._payload_parser.feed_data(
data[start_pos:])
except BaseException as exc:
if self.payload_exception is not None:
self._payload_parser.payload.set_exception(
self.payload_exception(str(exc)))
else:
self._payload_parser.payload.set_exception(exc)
eof = True
data = b''
if eof:
start_pos = 0
data_len = len(data)
self._payload_parser = None
continue
else:
break
if data and start_pos < data_len:
data = data[start_pos:]
else:
data = EMPTY
return messages, self._upgraded, data
def parse_headers(
self,
lines: List[bytes]
) -> Tuple['CIMultiDictProxy[str]',
RawHeaders,
Optional[bool],
Optional[str],
bool,
bool]:
"""Parses RFC 5322 headers from a stream.
Line continuations are supported. Returns list of header name
and value pairs. Header name is in upper case.
"""
headers, raw_headers = self._headers_parser.parse_headers(lines)
close_conn = None
encoding = None
upgrade = False
chunked = False
# keep-alive
conn = headers.get(hdrs.CONNECTION)
if conn:
v = conn.lower()
if v == 'close':
close_conn = True
elif v == 'keep-alive':
close_conn = False
elif v == 'upgrade':
upgrade = True
# encoding
enc = headers.get(hdrs.CONTENT_ENCODING)
if enc:
enc = enc.lower()
if enc in ('gzip', 'deflate', 'br'):
encoding = enc
# chunking
te = headers.get(hdrs.TRANSFER_ENCODING)
if te and 'chunked' in te.lower():
chunked = True
return (headers, raw_headers, close_conn, encoding, upgrade, chunked)
class HttpRequestParser(HttpParser):
"""Read request status line. Exception .http_exceptions.BadStatusLine
could be raised in case of any errors in status line.
Returns RawRequestMessage.
"""
def parse_message(self, lines: List[bytes]) -> Any:
# request line
line = lines[0].decode('utf-8', 'surrogateescape')
try:
method, path, version = line.split(None, 2)
except ValueError:
raise BadStatusLine(line) from None
if len(path) > self.max_line_size:
raise LineTooLong(
'Status line is too long',
str(self.max_line_size),
str(len(path)))
# method
if not METHRE.match(method):
raise BadStatusLine(method)
# version
try:
if version.startswith('HTTP/'):
n1, n2 = version[5:].split('.', 1)
version_o = HttpVersion(int(n1), int(n2))
else:
raise BadStatusLine(version)
except Exception:
raise BadStatusLine(version)
# read headers
(headers, raw_headers,
close, compression, upgrade, chunked) = self.parse_headers(lines)
if close is None: # then the headers weren't set in the request
if version_o <= HttpVersion10: # HTTP 1.0 must asks to not close
close = True
else: # HTTP 1.1 must ask to close.
close = False
return RawRequestMessage(
method, path, version_o, headers, raw_headers,
close, compression, upgrade, chunked, URL(path))
class HttpResponseParser(HttpParser):
"""Read response status line and headers.
BadStatusLine could be raised in case of any errors in status line.
Returns RawResponseMessage"""
def parse_message(self, lines: List[bytes]) -> Any:
line = lines[0].decode('utf-8', 'surrogateescape')
try:
version, status = line.split(None, 1)
except ValueError:
raise BadStatusLine(line) from None
try:
status, reason = status.split(None, 1)
except ValueError:
reason = ''
if len(reason) > self.max_line_size:
raise LineTooLong(
'Status line is too long',
str(self.max_line_size),
str(len(reason)))
# version
match = VERSRE.match(version)
if match is None:
raise BadStatusLine(line)
version_o = HttpVersion(int(match.group(1)), int(match.group(2)))
# The status code is a three-digit number
try:
status_i = int(status)
except ValueError:
raise BadStatusLine(line) from None
if status_i > 999:
raise BadStatusLine(line)
# read headers
(headers, raw_headers,
close, compression, upgrade, chunked) = self.parse_headers(lines)
if close is None:
close = version_o <= HttpVersion10
return RawResponseMessage(
version_o, status_i, reason.strip(),
headers, raw_headers, close, compression, upgrade, chunked)
class HttpPayloadParser:
def __init__(self, payload: StreamReader,
length: Optional[int]=None,
chunked: bool=False,
compression: Optional[str]=None,
code: Optional[int]=None,
method: Optional[str]=None,
readall: bool=False,
response_with_body: bool=True,
auto_decompress: bool=True) -> None:
self._length = 0
self._type = ParseState.PARSE_NONE
self._chunk = ChunkState.PARSE_CHUNKED_SIZE
self._chunk_size = 0
self._chunk_tail = b''
self._auto_decompress = auto_decompress
self.done = False
# payload decompression wrapper
if response_with_body and compression and self._auto_decompress:
real_payload = DeflateBuffer(payload, compression) # type: Union[StreamReader, DeflateBuffer] # noqa
else:
real_payload = payload
# payload parser
if not response_with_body:
# don't parse payload if it's not expected to be received
self._type = ParseState.PARSE_NONE
real_payload.feed_eof()
self.done = True
elif chunked:
self._type = ParseState.PARSE_CHUNKED
elif length is not None:
self._type = ParseState.PARSE_LENGTH
self._length = length
if self._length == 0:
real_payload.feed_eof()
self.done = True
else:
if readall and code != 204:
self._type = ParseState.PARSE_UNTIL_EOF
elif method in ('PUT', 'POST'):
internal_logger.warning( # pragma: no cover
'Content-Length or Transfer-Encoding header is required')
self._type = ParseState.PARSE_NONE
real_payload.feed_eof()
self.done = True
self.payload = real_payload
def feed_eof(self) -> None:
if self._type == ParseState.PARSE_UNTIL_EOF:
self.payload.feed_eof()
elif self._type == ParseState.PARSE_LENGTH:
raise ContentLengthError(
"Not enough data for satisfy content length header.")
elif self._type == ParseState.PARSE_CHUNKED:
raise TransferEncodingError(
"Not enough data for satisfy transfer length header.")
def feed_data(self,
chunk: bytes,
SEP: bytes=b'\r\n',
CHUNK_EXT: bytes=b';') -> Tuple[bool, bytes]:
# Read specified amount of bytes
if self._type == ParseState.PARSE_LENGTH:
required = self._length
chunk_len = len(chunk)
if required >= chunk_len:
self._length = required - chunk_len
self.payload.feed_data(chunk, chunk_len)
if self._length == 0:
self.payload.feed_eof()
return True, b''
else:
self._length = 0
self.payload.feed_data(chunk[:required], required)
self.payload.feed_eof()
return True, chunk[required:]
# Chunked transfer encoding parser
elif self._type == ParseState.PARSE_CHUNKED:
if self._chunk_tail:
chunk = self._chunk_tail + chunk
self._chunk_tail = b''
while chunk:
# read next chunk size
if self._chunk == ChunkState.PARSE_CHUNKED_SIZE:
pos = chunk.find(SEP)
if pos >= 0:
i = chunk.find(CHUNK_EXT, 0, pos)
if i >= 0:
size_b = chunk[:i] # strip chunk-extensions
else:
size_b = chunk[:pos]
try:
size = int(bytes(size_b), 16)
except ValueError:
exc = TransferEncodingError(
chunk[:pos].decode('ascii', 'surrogateescape'))
self.payload.set_exception(exc)
raise exc from None
chunk = chunk[pos+2:]
if size == 0: # eof marker
self._chunk = ChunkState.PARSE_MAYBE_TRAILERS
else:
self._chunk = ChunkState.PARSE_CHUNKED_CHUNK
self._chunk_size = size
self.payload.begin_http_chunk_receiving()
else:
self._chunk_tail = chunk
return False, b''
# read chunk and feed buffer
if self._chunk == ChunkState.PARSE_CHUNKED_CHUNK:
required = self._chunk_size
chunk_len = len(chunk)
if required > chunk_len:
self._chunk_size = required - chunk_len
self.payload.feed_data(chunk, chunk_len)
return False, b''
else:
self._chunk_size = 0
self.payload.feed_data(chunk[:required], required)
chunk = chunk[required:]
self._chunk = ChunkState.PARSE_CHUNKED_CHUNK_EOF
self.payload.end_http_chunk_receiving()
# toss the CRLF at the end of the chunk
if self._chunk == ChunkState.PARSE_CHUNKED_CHUNK_EOF:
if chunk[:2] == SEP:
chunk = chunk[2:]
self._chunk = ChunkState.PARSE_CHUNKED_SIZE
else:
self._chunk_tail = chunk
return False, b''
# if stream does not contain trailer, after 0\r\n
# we should get another \r\n otherwise
# trailers needs to be skiped until \r\n\r\n
if self._chunk == ChunkState.PARSE_MAYBE_TRAILERS:
if chunk[:2] == SEP:
# end of stream
self.payload.feed_eof()
return True, chunk[2:]
else:
self._chunk = ChunkState.PARSE_TRAILERS
# read and discard trailer up to the CRLF terminator
if self._chunk == ChunkState.PARSE_TRAILERS:
pos = chunk.find(SEP)
if pos >= 0:
chunk = chunk[pos+2:]
self._chunk = ChunkState.PARSE_MAYBE_TRAILERS
else:
self._chunk_tail = chunk
return False, b''
# Read all bytes until eof
elif self._type == ParseState.PARSE_UNTIL_EOF:
self.payload.feed_data(chunk, len(chunk))
return False, b''
class DeflateBuffer:
"""DeflateStream decompress stream and feed data into specified stream."""
def __init__(self, out: StreamReader, encoding: Optional[str]) -> None:
self.out = out
self.size = 0
self.encoding = encoding
self._started_decoding = False
if encoding == 'br':
if not HAS_BROTLI: # pragma: no cover
raise ContentEncodingError(
'Can not decode content-encoding: brotli (br). '
'Please install `brotlipy`')
self.decompressor = brotli.Decompressor()
else:
zlib_mode = (16 + zlib.MAX_WBITS
if encoding == 'gzip' else -zlib.MAX_WBITS)
self.decompressor = zlib.decompressobj(wbits=zlib_mode)
def set_exception(self, exc: BaseException) -> None:
self.out.set_exception(exc)
def feed_data(self, chunk: bytes, size: int) -> None:
self.size += size
try:
chunk = self.decompressor.decompress(chunk)
except Exception:
if not self._started_decoding and self.encoding == 'deflate':
self.decompressor = zlib.decompressobj()
try:
chunk = self.decompressor.decompress(chunk)
except Exception:
raise ContentEncodingError(
'Can not decode content-encoding: %s' % self.encoding)
else:
raise ContentEncodingError(
'Can not decode content-encoding: %s' % self.encoding)
if chunk:
self._started_decoding = True
self.out.feed_data(chunk, len(chunk))
def feed_eof(self) -> None:
chunk = self.decompressor.flush()
if chunk or self.size > 0:
self.out.feed_data(chunk, len(chunk))
if self.encoding == 'deflate' and not self.decompressor.eof:
raise ContentEncodingError('deflate')
self.out.feed_eof()
def begin_http_chunk_receiving(self) -> None:
self.out.begin_http_chunk_receiving()
def end_http_chunk_receiving(self) -> None:
self.out.end_http_chunk_receiving()
HttpRequestParserPy = HttpRequestParser
HttpResponseParserPy = HttpResponseParser
RawRequestMessagePy = RawRequestMessage
RawResponseMessagePy = RawResponseMessage
try:
if not NO_EXTENSIONS:
from ._http_parser import (HttpRequestParser, # type: ignore # noqa
HttpResponseParser,
RawRequestMessage,
RawResponseMessage)
HttpRequestParserC = HttpRequestParser
HttpResponseParserC = HttpResponseParser
RawRequestMessageC = RawRequestMessage
RawResponseMessageC = RawResponseMessage
except ImportError: # pragma: no cover
pass

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"""WebSocket protocol versions 13 and 8."""
import asyncio
import collections
import json
import random
import re
import sys
import zlib
from enum import IntEnum
from struct import Struct
from typing import Any, Callable, List, Optional, Tuple, Union
from .base_protocol import BaseProtocol
from .helpers import NO_EXTENSIONS
from .log import ws_logger
from .streams import DataQueue
__all__ = ('WS_CLOSED_MESSAGE', 'WS_CLOSING_MESSAGE', 'WS_KEY',
'WebSocketReader', 'WebSocketWriter', 'WSMessage',
'WebSocketError', 'WSMsgType', 'WSCloseCode')
class WSCloseCode(IntEnum):
OK = 1000
GOING_AWAY = 1001
PROTOCOL_ERROR = 1002
UNSUPPORTED_DATA = 1003
INVALID_TEXT = 1007
POLICY_VIOLATION = 1008
MESSAGE_TOO_BIG = 1009
MANDATORY_EXTENSION = 1010
INTERNAL_ERROR = 1011
SERVICE_RESTART = 1012
TRY_AGAIN_LATER = 1013
ALLOWED_CLOSE_CODES = {int(i) for i in WSCloseCode}
class WSMsgType(IntEnum):
# websocket spec types
CONTINUATION = 0x0
TEXT = 0x1
BINARY = 0x2
PING = 0x9
PONG = 0xa
CLOSE = 0x8
# aiohttp specific types
CLOSING = 0x100
CLOSED = 0x101
ERROR = 0x102
text = TEXT
binary = BINARY
ping = PING
pong = PONG
close = CLOSE
closing = CLOSING
closed = CLOSED
error = ERROR
WS_KEY = b'258EAFA5-E914-47DA-95CA-C5AB0DC85B11'
UNPACK_LEN2 = Struct('!H').unpack_from
UNPACK_LEN3 = Struct('!Q').unpack_from
UNPACK_CLOSE_CODE = Struct('!H').unpack
PACK_LEN1 = Struct('!BB').pack
PACK_LEN2 = Struct('!BBH').pack
PACK_LEN3 = Struct('!BBQ').pack
PACK_CLOSE_CODE = Struct('!H').pack
MSG_SIZE = 2 ** 14
DEFAULT_LIMIT = 2 ** 16
_WSMessageBase = collections.namedtuple('_WSMessageBase',
['type', 'data', 'extra'])
class WSMessage(_WSMessageBase):
def json(self, *,
loads: Callable[[Any], Any]=json.loads) -> Any:
"""Return parsed JSON data.
.. versionadded:: 0.22
"""
return loads(self.data)
WS_CLOSED_MESSAGE = WSMessage(WSMsgType.CLOSED, None, None)
WS_CLOSING_MESSAGE = WSMessage(WSMsgType.CLOSING, None, None)
class WebSocketError(Exception):
"""WebSocket protocol parser error."""
def __init__(self, code: int, message: str) -> None:
self.code = code
super().__init__(code, message)
def __str__(self) -> str:
return self.args[1]
class WSHandshakeError(Exception):
"""WebSocket protocol handshake error."""
native_byteorder = sys.byteorder
# Used by _websocket_mask_python
_XOR_TABLE = [bytes(a ^ b for a in range(256)) for b in range(256)]
def _websocket_mask_python(mask: bytes, data: bytearray) -> None:
"""Websocket masking function.
`mask` is a `bytes` object of length 4; `data` is a `bytearray`
object of any length. The contents of `data` are masked with `mask`,
as specified in section 5.3 of RFC 6455.
Note that this function mutates the `data` argument.
This pure-python implementation may be replaced by an optimized
version when available.
"""
assert isinstance(data, bytearray), data
assert len(mask) == 4, mask
if data:
a, b, c, d = (_XOR_TABLE[n] for n in mask)
data[::4] = data[::4].translate(a)
data[1::4] = data[1::4].translate(b)
data[2::4] = data[2::4].translate(c)
data[3::4] = data[3::4].translate(d)
if NO_EXTENSIONS: # pragma: no cover
_websocket_mask = _websocket_mask_python
else:
try:
from ._websocket import _websocket_mask_cython # type: ignore
_websocket_mask = _websocket_mask_cython
except ImportError: # pragma: no cover
_websocket_mask = _websocket_mask_python
_WS_DEFLATE_TRAILING = bytes([0x00, 0x00, 0xff, 0xff])
_WS_EXT_RE = re.compile(r'^(?:;\s*(?:'
r'(server_no_context_takeover)|'
r'(client_no_context_takeover)|'
r'(server_max_window_bits(?:=(\d+))?)|'
r'(client_max_window_bits(?:=(\d+))?)))*$')
_WS_EXT_RE_SPLIT = re.compile(r'permessage-deflate([^,]+)?')
def ws_ext_parse(extstr: str, isserver: bool=False) -> Tuple[int, bool]:
if not extstr:
return 0, False
compress = 0
notakeover = False
for ext in _WS_EXT_RE_SPLIT.finditer(extstr):
defext = ext.group(1)
# Return compress = 15 when get `permessage-deflate`
if not defext:
compress = 15
break
match = _WS_EXT_RE.match(defext)
if match:
compress = 15
if isserver:
# Server never fail to detect compress handshake.
# Server does not need to send max wbit to client
if match.group(4):
compress = int(match.group(4))
# Group3 must match if group4 matches
# Compress wbit 8 does not support in zlib
# If compress level not support,
# CONTINUE to next extension
if compress > 15 or compress < 9:
compress = 0
continue
if match.group(1):
notakeover = True
# Ignore regex group 5 & 6 for client_max_window_bits
break
else:
if match.group(6):
compress = int(match.group(6))
# Group5 must match if group6 matches
# Compress wbit 8 does not support in zlib
# If compress level not support,
# FAIL the parse progress
if compress > 15 or compress < 9:
raise WSHandshakeError('Invalid window size')
if match.group(2):
notakeover = True
# Ignore regex group 5 & 6 for client_max_window_bits
break
# Return Fail if client side and not match
elif not isserver:
raise WSHandshakeError('Extension for deflate not supported' +
ext.group(1))
return compress, notakeover
def ws_ext_gen(compress: int=15, isserver: bool=False,
server_notakeover: bool=False) -> str:
# client_notakeover=False not used for server
# compress wbit 8 does not support in zlib
if compress < 9 or compress > 15:
raise ValueError('Compress wbits must between 9 and 15, '
'zlib does not support wbits=8')
enabledext = ['permessage-deflate']
if not isserver:
enabledext.append('client_max_window_bits')
if compress < 15:
enabledext.append('server_max_window_bits=' + str(compress))
if server_notakeover:
enabledext.append('server_no_context_takeover')
# if client_notakeover:
# enabledext.append('client_no_context_takeover')
return '; '.join(enabledext)
class WSParserState(IntEnum):
READ_HEADER = 1
READ_PAYLOAD_LENGTH = 2
READ_PAYLOAD_MASK = 3
READ_PAYLOAD = 4
class WebSocketReader:
def __init__(self, queue: DataQueue[WSMessage],
max_msg_size: int, compress: bool=True) -> None:
self.queue = queue
self._max_msg_size = max_msg_size
self._exc = None # type: Optional[BaseException]
self._partial = bytearray()
self._state = WSParserState.READ_HEADER
self._opcode = None # type: Optional[int]
self._frame_fin = False
self._frame_opcode = None # type: Optional[int]
self._frame_payload = bytearray()
self._tail = b''
self._has_mask = False
self._frame_mask = None # type: Optional[bytes]
self._payload_length = 0
self._payload_length_flag = 0
self._compressed = None # type: Optional[bool]
self._decompressobj = None # type: Any # zlib.decompressobj actually
self._compress = compress
def feed_eof(self) -> None:
self.queue.feed_eof()
def feed_data(self, data: bytes) -> Tuple[bool, bytes]:
if self._exc:
return True, data
try:
return self._feed_data(data)
except Exception as exc:
self._exc = exc
self.queue.set_exception(exc)
return True, b''
def _feed_data(self, data: bytes) -> Tuple[bool, bytes]:
for fin, opcode, payload, compressed in self.parse_frame(data):
if compressed and not self._decompressobj:
self._decompressobj = zlib.decompressobj(wbits=-zlib.MAX_WBITS)
if opcode == WSMsgType.CLOSE:
if len(payload) >= 2:
close_code = UNPACK_CLOSE_CODE(payload[:2])[0]
if (close_code < 3000 and
close_code not in ALLOWED_CLOSE_CODES):
raise WebSocketError(
WSCloseCode.PROTOCOL_ERROR,
'Invalid close code: {}'.format(close_code))
try:
close_message = payload[2:].decode('utf-8')
except UnicodeDecodeError as exc:
raise WebSocketError(
WSCloseCode.INVALID_TEXT,
'Invalid UTF-8 text message') from exc
msg = WSMessage(WSMsgType.CLOSE, close_code, close_message)
elif payload:
raise WebSocketError(
WSCloseCode.PROTOCOL_ERROR,
'Invalid close frame: {} {} {!r}'.format(
fin, opcode, payload))
else:
msg = WSMessage(WSMsgType.CLOSE, 0, '')
self.queue.feed_data(msg, 0)
elif opcode == WSMsgType.PING:
self.queue.feed_data(
WSMessage(WSMsgType.PING, payload, ''), len(payload))
elif opcode == WSMsgType.PONG:
self.queue.feed_data(
WSMessage(WSMsgType.PONG, payload, ''), len(payload))
elif opcode not in (
WSMsgType.TEXT, WSMsgType.BINARY) and self._opcode is None:
raise WebSocketError(
WSCloseCode.PROTOCOL_ERROR,
"Unexpected opcode={!r}".format(opcode))
else:
# load text/binary
if not fin:
# got partial frame payload
if opcode != WSMsgType.CONTINUATION:
self._opcode = opcode
self._partial.extend(payload)
if (self._max_msg_size and
len(self._partial) >= self._max_msg_size):
raise WebSocketError(
WSCloseCode.MESSAGE_TOO_BIG,
"Message size {} exceeds limit {}".format(
len(self._partial), self._max_msg_size))
else:
# previous frame was non finished
# we should get continuation opcode
if self._partial:
if opcode != WSMsgType.CONTINUATION:
raise WebSocketError(
WSCloseCode.PROTOCOL_ERROR,
'The opcode in non-fin frame is expected '
'to be zero, got {!r}'.format(opcode))
if opcode == WSMsgType.CONTINUATION:
assert self._opcode is not None
opcode = self._opcode
self._opcode = None
self._partial.extend(payload)
if (self._max_msg_size and
len(self._partial) >= self._max_msg_size):
raise WebSocketError(
WSCloseCode.MESSAGE_TOO_BIG,
"Message size {} exceeds limit {}".format(
len(self._partial), self._max_msg_size))
# Decompress process must to be done after all packets
# received.
if compressed:
self._partial.extend(_WS_DEFLATE_TRAILING)
payload_merged = self._decompressobj.decompress(
self._partial, self._max_msg_size)
if self._decompressobj.unconsumed_tail:
left = len(self._decompressobj.unconsumed_tail)
raise WebSocketError(
WSCloseCode.MESSAGE_TOO_BIG,
"Decompressed message size {} exceeds limit {}"
.format(
self._max_msg_size + left,
self._max_msg_size
)
)
else:
payload_merged = bytes(self._partial)
self._partial.clear()
if opcode == WSMsgType.TEXT:
try:
text = payload_merged.decode('utf-8')
self.queue.feed_data(
WSMessage(WSMsgType.TEXT, text, ''), len(text))
except UnicodeDecodeError as exc:
raise WebSocketError(
WSCloseCode.INVALID_TEXT,
'Invalid UTF-8 text message') from exc
else:
self.queue.feed_data(
WSMessage(WSMsgType.BINARY, payload_merged, ''),
len(payload_merged))
return False, b''
def parse_frame(self, buf: bytes) -> List[Tuple[bool, Optional[int],
bytearray,
Optional[bool]]]:
"""Return the next frame from the socket."""
frames = []
if self._tail:
buf, self._tail = self._tail + buf, b''
start_pos = 0
buf_length = len(buf)
while True:
# read header
if self._state == WSParserState.READ_HEADER:
if buf_length - start_pos >= 2:
data = buf[start_pos:start_pos+2]
start_pos += 2
first_byte, second_byte = data
fin = (first_byte >> 7) & 1
rsv1 = (first_byte >> 6) & 1
rsv2 = (first_byte >> 5) & 1
rsv3 = (first_byte >> 4) & 1
opcode = first_byte & 0xf
# frame-fin = %x0 ; more frames of this message follow
# / %x1 ; final frame of this message
# frame-rsv1 = %x0 ;
# 1 bit, MUST be 0 unless negotiated otherwise
# frame-rsv2 = %x0 ;
# 1 bit, MUST be 0 unless negotiated otherwise
# frame-rsv3 = %x0 ;
# 1 bit, MUST be 0 unless negotiated otherwise
#
# Remove rsv1 from this test for deflate development
if rsv2 or rsv3 or (rsv1 and not self._compress):
raise WebSocketError(
WSCloseCode.PROTOCOL_ERROR,
'Received frame with non-zero reserved bits')
if opcode > 0x7 and fin == 0:
raise WebSocketError(
WSCloseCode.PROTOCOL_ERROR,
'Received fragmented control frame')
has_mask = (second_byte >> 7) & 1
length = second_byte & 0x7f
# Control frames MUST have a payload
# length of 125 bytes or less
if opcode > 0x7 and length > 125:
raise WebSocketError(
WSCloseCode.PROTOCOL_ERROR,
'Control frame payload cannot be '
'larger than 125 bytes')
# Set compress status if last package is FIN
# OR set compress status if this is first fragment
# Raise error if not first fragment with rsv1 = 0x1
if self._frame_fin or self._compressed is None:
self._compressed = True if rsv1 else False
elif rsv1:
raise WebSocketError(
WSCloseCode.PROTOCOL_ERROR,
'Received frame with non-zero reserved bits')
self._frame_fin = bool(fin)
self._frame_opcode = opcode
self._has_mask = bool(has_mask)
self._payload_length_flag = length
self._state = WSParserState.READ_PAYLOAD_LENGTH
else:
break
# read payload length
if self._state == WSParserState.READ_PAYLOAD_LENGTH:
length = self._payload_length_flag
if length == 126:
if buf_length - start_pos >= 2:
data = buf[start_pos:start_pos+2]
start_pos += 2
length = UNPACK_LEN2(data)[0]
self._payload_length = length
self._state = (
WSParserState.READ_PAYLOAD_MASK
if self._has_mask
else WSParserState.READ_PAYLOAD)
else:
break
elif length > 126:
if buf_length - start_pos >= 8:
data = buf[start_pos:start_pos+8]
start_pos += 8
length = UNPACK_LEN3(data)[0]
self._payload_length = length
self._state = (
WSParserState.READ_PAYLOAD_MASK
if self._has_mask
else WSParserState.READ_PAYLOAD)
else:
break
else:
self._payload_length = length
self._state = (
WSParserState.READ_PAYLOAD_MASK
if self._has_mask
else WSParserState.READ_PAYLOAD)
# read payload mask
if self._state == WSParserState.READ_PAYLOAD_MASK:
if buf_length - start_pos >= 4:
self._frame_mask = buf[start_pos:start_pos+4]
start_pos += 4
self._state = WSParserState.READ_PAYLOAD
else:
break
if self._state == WSParserState.READ_PAYLOAD:
length = self._payload_length
payload = self._frame_payload
chunk_len = buf_length - start_pos
if length >= chunk_len:
self._payload_length = length - chunk_len
payload.extend(buf[start_pos:])
start_pos = buf_length
else:
self._payload_length = 0
payload.extend(buf[start_pos:start_pos+length])
start_pos = start_pos + length
if self._payload_length == 0:
if self._has_mask:
assert self._frame_mask is not None
_websocket_mask(self._frame_mask, payload)
frames.append((
self._frame_fin,
self._frame_opcode,
payload,
self._compressed))
self._frame_payload = bytearray()
self._state = WSParserState.READ_HEADER
else:
break
self._tail = buf[start_pos:]
return frames
class WebSocketWriter:
def __init__(self, protocol: BaseProtocol, transport: asyncio.Transport, *,
use_mask: bool=False, limit: int=DEFAULT_LIMIT,
random: Any=random.Random(),
compress: int=0, notakeover: bool=False) -> None:
self.protocol = protocol
self.transport = transport
self.use_mask = use_mask
self.randrange = random.randrange
self.compress = compress
self.notakeover = notakeover
self._closing = False
self._limit = limit
self._output_size = 0
self._compressobj = None # type: Any # actually compressobj
async def _send_frame(self, message: bytes, opcode: int,
compress: Optional[int]=None) -> None:
"""Send a frame over the websocket with message as its payload."""
if self._closing:
ws_logger.warning('websocket connection is closing.')
rsv = 0
# Only compress larger packets (disabled)
# Does small packet needs to be compressed?
# if self.compress and opcode < 8 and len(message) > 124:
if (compress or self.compress) and opcode < 8:
if compress:
# Do not set self._compress if compressing is for this frame
compressobj = zlib.compressobj(wbits=-compress)
else: # self.compress
if not self._compressobj:
self._compressobj = zlib.compressobj(wbits=-self.compress)
compressobj = self._compressobj
message = compressobj.compress(message)
message = message + compressobj.flush(
zlib.Z_FULL_FLUSH if self.notakeover else zlib.Z_SYNC_FLUSH)
if message.endswith(_WS_DEFLATE_TRAILING):
message = message[:-4]
rsv = rsv | 0x40
msg_length = len(message)
use_mask = self.use_mask
if use_mask:
mask_bit = 0x80
else:
mask_bit = 0
if msg_length < 126:
header = PACK_LEN1(0x80 | rsv | opcode, msg_length | mask_bit)
elif msg_length < (1 << 16):
header = PACK_LEN2(0x80 | rsv | opcode, 126 | mask_bit, msg_length)
else:
header = PACK_LEN3(0x80 | rsv | opcode, 127 | mask_bit, msg_length)
if use_mask:
mask = self.randrange(0, 0xffffffff)
mask = mask.to_bytes(4, 'big')
message = bytearray(message)
_websocket_mask(mask, message)
self.transport.write(header + mask + message)
self._output_size += len(header) + len(mask) + len(message)
else:
if len(message) > MSG_SIZE:
self.transport.write(header)
self.transport.write(message)
else:
self.transport.write(header + message)
self._output_size += len(header) + len(message)
if self._output_size > self._limit:
self._output_size = 0
await self.protocol._drain_helper()
async def pong(self, message: bytes=b'') -> None:
"""Send pong message."""
if isinstance(message, str):
message = message.encode('utf-8')
await self._send_frame(message, WSMsgType.PONG)
async def ping(self, message: bytes=b'') -> None:
"""Send ping message."""
if isinstance(message, str):
message = message.encode('utf-8')
await self._send_frame(message, WSMsgType.PING)
async def send(self, message: Union[str, bytes],
binary: bool=False,
compress: Optional[int]=None) -> None:
"""Send a frame over the websocket with message as its payload."""
if isinstance(message, str):
message = message.encode('utf-8')
if binary:
await self._send_frame(message, WSMsgType.BINARY, compress)
else:
await self._send_frame(message, WSMsgType.TEXT, compress)
async def close(self, code: int=1000, message: bytes=b'') -> None:
"""Close the websocket, sending the specified code and message."""
if isinstance(message, str):
message = message.encode('utf-8')
try:
await self._send_frame(
PACK_CLOSE_CODE(code) + message, opcode=WSMsgType.CLOSE)
finally:
self._closing = True

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"""Http related parsers and protocol."""
import asyncio
import collections
import zlib
from typing import Any, Awaitable, Callable, Optional, Union # noqa
from multidict import CIMultiDict # noqa
from .abc import AbstractStreamWriter
from .base_protocol import BaseProtocol
from .helpers import NO_EXTENSIONS
__all__ = ('StreamWriter', 'HttpVersion', 'HttpVersion10', 'HttpVersion11')
HttpVersion = collections.namedtuple('HttpVersion', ['major', 'minor'])
HttpVersion10 = HttpVersion(1, 0)
HttpVersion11 = HttpVersion(1, 1)
_T_OnChunkSent = Optional[Callable[[bytes], Awaitable[None]]]
class StreamWriter(AbstractStreamWriter):
def __init__(self,
protocol: BaseProtocol,
loop: asyncio.AbstractEventLoop,
on_chunk_sent: _T_OnChunkSent = None) -> None:
self._protocol = protocol
self._transport = protocol.transport
self.loop = loop
self.length = None
self.chunked = False
self.buffer_size = 0
self.output_size = 0
self._eof = False
self._compress = None # type: Any
self._drain_waiter = None
self._on_chunk_sent = on_chunk_sent # type: _T_OnChunkSent
@property
def transport(self) -> Optional[asyncio.Transport]:
return self._transport
@property
def protocol(self) -> BaseProtocol:
return self._protocol
def enable_chunking(self) -> None:
self.chunked = True
def enable_compression(self, encoding: str='deflate') -> None:
zlib_mode = (16 + zlib.MAX_WBITS
if encoding == 'gzip' else -zlib.MAX_WBITS)
self._compress = zlib.compressobj(wbits=zlib_mode)
def _write(self, chunk: bytes) -> None:
size = len(chunk)
self.buffer_size += size
self.output_size += size
if self._transport is None or self._transport.is_closing():
raise ConnectionResetError('Cannot write to closing transport')
self._transport.write(chunk)
async def write(self, chunk: bytes,
*, drain: bool=True, LIMIT: int=0x10000) -> None:
"""Writes chunk of data to a stream.
write_eof() indicates end of stream.
writer can't be used after write_eof() method being called.
write() return drain future.
"""
if self._on_chunk_sent is not None:
await self._on_chunk_sent(chunk)
if self._compress is not None:
chunk = self._compress.compress(chunk)
if not chunk:
return
if self.length is not None:
chunk_len = len(chunk)
if self.length >= chunk_len:
self.length = self.length - chunk_len
else:
chunk = chunk[:self.length]
self.length = 0
if not chunk:
return
if chunk:
if self.chunked:
chunk_len_pre = ('%x\r\n' % len(chunk)).encode('ascii')
chunk = chunk_len_pre + chunk + b'\r\n'
self._write(chunk)
if self.buffer_size > LIMIT and drain:
self.buffer_size = 0
await self.drain()
async def write_headers(self, status_line: str,
headers: 'CIMultiDict[str]') -> None:
"""Write request/response status and headers."""
# status + headers
buf = _serialize_headers(status_line, headers)
self._write(buf)
async def write_eof(self, chunk: bytes=b'') -> None:
if self._eof:
return
if chunk and self._on_chunk_sent is not None:
await self._on_chunk_sent(chunk)
if self._compress:
if chunk:
chunk = self._compress.compress(chunk)
chunk = chunk + self._compress.flush()
if chunk and self.chunked:
chunk_len = ('%x\r\n' % len(chunk)).encode('ascii')
chunk = chunk_len + chunk + b'\r\n0\r\n\r\n'
else:
if self.chunked:
if chunk:
chunk_len = ('%x\r\n' % len(chunk)).encode('ascii')
chunk = chunk_len + chunk + b'\r\n0\r\n\r\n'
else:
chunk = b'0\r\n\r\n'
if chunk:
self._write(chunk)
await self.drain()
self._eof = True
self._transport = None
async def drain(self) -> None:
"""Flush the write buffer.
The intended use is to write
await w.write(data)
await w.drain()
"""
if self._protocol.transport is not None:
await self._protocol._drain_helper()
def _py_serialize_headers(status_line: str,
headers: 'CIMultiDict[str]') -> bytes:
line = status_line + '\r\n' + ''.join(
[k + ': ' + v + '\r\n' for k, v in headers.items()])
return line.encode('utf-8') + b'\r\n'
_serialize_headers = _py_serialize_headers
try:
import aiohttp._http_writer as _http_writer # type: ignore
_c_serialize_headers = _http_writer._serialize_headers
if not NO_EXTENSIONS:
_serialize_headers = _c_serialize_headers
except ImportError:
pass

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matteo_env/Lib/site-packages/aiohttp/locks.py Normal file
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import asyncio
import collections
from typing import Any, Optional
try:
from typing import Deque
except ImportError:
from typing_extensions import Deque # noqa
class EventResultOrError:
"""
This class wrappers the Event asyncio lock allowing either awake the
locked Tasks without any error or raising an exception.
thanks to @vorpalsmith for the simple design.
"""
def __init__(self, loop: asyncio.AbstractEventLoop) -> None:
self._loop = loop
self._exc = None # type: Optional[BaseException]
self._event = asyncio.Event(loop=loop)
self._waiters = collections.deque() # type: Deque[asyncio.Future[Any]]
def set(self, exc: Optional[BaseException]=None) -> None:
self._exc = exc
self._event.set()
async def wait(self) -> Any:
waiter = self._loop.create_task(self._event.wait())
self._waiters.append(waiter)
try:
val = await waiter
finally:
self._waiters.remove(waiter)
if self._exc is not None:
raise self._exc
return val
def cancel(self) -> None:
""" Cancel all waiters """
for waiter in self._waiters:
waiter.cancel()

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matteo_env/Lib/site-packages/aiohttp/log.py Normal file
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import logging
access_logger = logging.getLogger('aiohttp.access')
client_logger = logging.getLogger('aiohttp.client')
internal_logger = logging.getLogger('aiohttp.internal')
server_logger = logging.getLogger('aiohttp.server')
web_logger = logging.getLogger('aiohttp.web')
ws_logger = logging.getLogger('aiohttp.websocket')

959
matteo_env/Lib/site-packages/aiohttp/multipart.py Normal file
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import base64
import binascii
import json
import re
import uuid
import warnings
import zlib
from collections import deque
from types import TracebackType
from typing import ( # noqa
TYPE_CHECKING,
Any,
Dict,
Iterator,
List,
Mapping,
Optional,
Sequence,
Tuple,
Type,
Union,
)
from urllib.parse import parse_qsl, unquote, urlencode
from multidict import CIMultiDict, CIMultiDictProxy, MultiMapping # noqa
from .hdrs import (
CONTENT_DISPOSITION,
CONTENT_ENCODING,
CONTENT_LENGTH,
CONTENT_TRANSFER_ENCODING,
CONTENT_TYPE,
)
from .helpers import CHAR, TOKEN, parse_mimetype, reify
from .http import HeadersParser
from .payload import (
JsonPayload,
LookupError,
Order,
Payload,
StringPayload,
get_payload,
payload_type,
)
from .streams import StreamReader
__all__ = ('MultipartReader', 'MultipartWriter', 'BodyPartReader',
'BadContentDispositionHeader', 'BadContentDispositionParam',
'parse_content_disposition', 'content_disposition_filename')
if TYPE_CHECKING: # pragma: no cover
from .client_reqrep import ClientResponse # noqa
class BadContentDispositionHeader(RuntimeWarning):
pass
class BadContentDispositionParam(RuntimeWarning):
pass
def parse_content_disposition(header: Optional[str]) -> Tuple[Optional[str],
Dict[str, str]]:
def is_token(string: str) -> bool:
return bool(string) and TOKEN >= set(string)
def is_quoted(string: str) -> bool:
return string[0] == string[-1] == '"'
def is_rfc5987(string: str) -> bool:
return is_token(string) and string.count("'") == 2
def is_extended_param(string: str) -> bool:
return string.endswith('*')
def is_continuous_param(string: str) -> bool:
pos = string.find('*') + 1
if not pos:
return False
substring = string[pos:-1] if string.endswith('*') else string[pos:]
return substring.isdigit()
def unescape(text: str, *,
chars: str=''.join(map(re.escape, CHAR))) -> str:
return re.sub('\\\\([{}])'.format(chars), '\\1', text)
if not header:
return None, {}
disptype, *parts = header.split(';')
if not is_token(disptype):
warnings.warn(BadContentDispositionHeader(header))
return None, {}
params = {} # type: Dict[str, str]
while parts:
item = parts.pop(0)
if '=' not in item:
warnings.warn(BadContentDispositionHeader(header))
return None, {}
key, value = item.split('=', 1)
key = key.lower().strip()
value = value.lstrip()
if key in params:
warnings.warn(BadContentDispositionHeader(header))
return None, {}
if not is_token(key):
warnings.warn(BadContentDispositionParam(item))
continue
elif is_continuous_param(key):
if is_quoted(value):
value = unescape(value[1:-1])
elif not is_token(value):
warnings.warn(BadContentDispositionParam(item))
continue
elif is_extended_param(key):
if is_rfc5987(value):
encoding, _, value = value.split("'", 2)
encoding = encoding or 'utf-8'
else:
warnings.warn(BadContentDispositionParam(item))
continue
try:
value = unquote(value, encoding, 'strict')
except UnicodeDecodeError: # pragma: nocover
warnings.warn(BadContentDispositionParam(item))
continue
else:
failed = True
if is_quoted(value):
failed = False
value = unescape(value[1:-1].lstrip('\\/'))
elif is_token(value):
failed = False
elif parts:
# maybe just ; in filename, in any case this is just
# one case fix, for proper fix we need to redesign parser
_value = '%s;%s' % (value, parts[0])
if is_quoted(_value):
parts.pop(0)
value = unescape(_value[1:-1].lstrip('\\/'))
failed = False
if failed:
warnings.warn(BadContentDispositionHeader(header))
return None, {}
params[key] = value
return disptype.lower(), params
def content_disposition_filename(params: Mapping[str, str],
name: str='filename') -> Optional[str]:
name_suf = '%s*' % name
if not params:
return None
elif name_suf in params:
return params[name_suf]
elif name in params:
return params[name]
else:
parts = []
fnparams = sorted((key, value)
for key, value in params.items()
if key.startswith(name_suf))
for num, (key, value) in enumerate(fnparams):
_, tail = key.split('*', 1)
if tail.endswith('*'):
tail = tail[:-1]
if tail == str(num):
parts.append(value)
else:
break
if not parts:
return None
value = ''.join(parts)
if "'" in value:
encoding, _, value = value.split("'", 2)
encoding = encoding or 'utf-8'
return unquote(value, encoding, 'strict')
return value
class MultipartResponseWrapper:
"""Wrapper around the MultipartReader.
It takes care about
underlying connection and close it when it needs in.
"""
def __init__(
self,
resp: 'ClientResponse',
stream: 'MultipartReader',
) -> None:
self.resp = resp
self.stream = stream
def __aiter__(self) -> 'MultipartResponseWrapper':
return self
async def __anext__(
self,
) -> Union['MultipartReader', 'BodyPartReader']:
part = await self.next()
if part is None:
raise StopAsyncIteration # NOQA
return part
def at_eof(self) -> bool:
"""Returns True when all response data had been read."""
return self.resp.content.at_eof()
async def next(
self,
) -> Optional[Union['MultipartReader', 'BodyPartReader']]:
"""Emits next multipart reader object."""
item = await self.stream.next()
if self.stream.at_eof():
await self.release()
return item
async def release(self) -> None:
"""Releases the connection gracefully, reading all the content
to the void."""
await self.resp.release()
class BodyPartReader:
"""Multipart reader for single body part."""
chunk_size = 8192
def __init__(self, boundary: bytes,
headers: 'CIMultiDictProxy[str]',
content: StreamReader) -> None:
self.headers = headers
self._boundary = boundary
self._content = content
self._at_eof = False
length = self.headers.get(CONTENT_LENGTH, None)
self._length = int(length) if length is not None else None
self._read_bytes = 0
# TODO: typeing.Deque is not supported by Python 3.5
self._unread = deque() # type: Any
self._prev_chunk = None # type: Optional[bytes]
self._content_eof = 0
self._cache = {} # type: Dict[str, Any]
def __aiter__(self) -> 'BodyPartReader':
return self
async def __anext__(self) -> bytes:
part = await self.next()
if part is None:
raise StopAsyncIteration # NOQA
return part
async def next(self) -> Optional[bytes]:
item = await self.read()
if not item:
return None
return item
async def read(self, *, decode: bool=False) -> bytes:
"""Reads body part data.
decode: Decodes data following by encoding
method from Content-Encoding header. If it missed
data remains untouched
"""
if self._at_eof:
return b''
data = bytearray()
while not self._at_eof:
data.extend((await self.read_chunk(self.chunk_size)))
if decode:
return self.decode(data)
return data
async def read_chunk(self, size: int=chunk_size) -> bytes:
"""Reads body part content chunk of the specified size.
size: chunk size
"""
if self._at_eof:
return b''
if self._length:
chunk = await self._read_chunk_from_length(size)
else:
chunk = await self._read_chunk_from_stream(size)
self._read_bytes += len(chunk)
if self._read_bytes == self._length:
self._at_eof = True
if self._at_eof:
clrf = await self._content.readline()
assert b'\r\n' == clrf, \
'reader did not read all the data or it is malformed'
return chunk
async def _read_chunk_from_length(self, size: int) -> bytes:
# Reads body part content chunk of the specified size.
# The body part must has Content-Length header with proper value.
assert self._length is not None, \
'Content-Length required for chunked read'
chunk_size = min(size, self._length - self._read_bytes)
chunk = await self._content.read(chunk_size)
return chunk
async def _read_chunk_from_stream(self, size: int) -> bytes:
# Reads content chunk of body part with unknown length.
# The Content-Length header for body part is not necessary.
assert size >= len(self._boundary) + 2, \
'Chunk size must be greater or equal than boundary length + 2'
first_chunk = self._prev_chunk is None
if first_chunk:
self._prev_chunk = await self._content.read(size)
chunk = await self._content.read(size)
self._content_eof += int(self._content.at_eof())
assert self._content_eof < 3, "Reading after EOF"
assert self._prev_chunk is not None
window = self._prev_chunk + chunk
sub = b'\r\n' + self._boundary
if first_chunk:
idx = window.find(sub)
else:
idx = window.find(sub, max(0, len(self._prev_chunk) - len(sub)))
if idx >= 0:
# pushing boundary back to content
with warnings.catch_warnings():
warnings.filterwarnings("ignore",
category=DeprecationWarning)
self._content.unread_data(window[idx:])
if size > idx:
self._prev_chunk = self._prev_chunk[:idx]
chunk = window[len(self._prev_chunk):idx]
if not chunk:
self._at_eof = True
result = self._prev_chunk
self._prev_chunk = chunk
return result
async def readline(self) -> bytes:
"""Reads body part by line by line."""
if self._at_eof:
return b''
if self._unread:
line = self._unread.popleft()
else:
line = await self._content.readline()
if line.startswith(self._boundary):
# the very last boundary may not come with \r\n,
# so set single rules for everyone
sline = line.rstrip(b'\r\n')
boundary = self._boundary
last_boundary = self._boundary + b'--'
# ensure that we read exactly the boundary, not something alike
if sline == boundary or sline == last_boundary:
self._at_eof = True
self._unread.append(line)
return b''
else:
next_line = await self._content.readline()
if next_line.startswith(self._boundary):
line = line[:-2] # strip CRLF but only once
self._unread.append(next_line)
return line
async def release(self) -> None:
"""Like read(), but reads all the data to the void."""
if self._at_eof:
return
while not self._at_eof:
await self.read_chunk(self.chunk_size)
async def text(self, *, encoding: Optional[str]=None) -> str:
"""Like read(), but assumes that body part contains text data."""
data = await self.read(decode=True)
# see https://www.w3.org/TR/html5/forms.html#multipart/form-data-encoding-algorithm # NOQA
# and https://dvcs.w3.org/hg/xhr/raw-file/tip/Overview.html#dom-xmlhttprequest-send # NOQA
encoding = encoding or self.get_charset(default='utf-8')
return data.decode(encoding)
async def json(self,
*,
encoding: Optional[str]=None) -> Optional[Dict[str, Any]]:
"""Like read(), but assumes that body parts contains JSON data."""
data = await self.read(decode=True)
if not data:
return None
encoding = encoding or self.get_charset(default='utf-8')
return json.loads(data.decode(encoding))
async def form(self, *,
encoding: Optional[str]=None) -> List[Tuple[str, str]]:
"""Like read(), but assumes that body parts contains form
urlencoded data.
"""
data = await self.read(decode=True)
if not data:
return []
if encoding is not None:
real_encoding = encoding
else:
real_encoding = self.get_charset(default='utf-8')
return parse_qsl(data.rstrip().decode(real_encoding),
keep_blank_values=True,
encoding=real_encoding)
def at_eof(self) -> bool:
"""Returns True if the boundary was reached or False otherwise."""
return self._at_eof
def decode(self, data: bytes) -> bytes:
"""Decodes data according the specified Content-Encoding
or Content-Transfer-Encoding headers value.
"""
if CONTENT_TRANSFER_ENCODING in self.headers:
data = self._decode_content_transfer(data)
if CONTENT_ENCODING in self.headers:
return self._decode_content(data)
return data
def _decode_content(self, data: bytes) -> bytes:
encoding = self.headers.get(CONTENT_ENCODING, '').lower()
if encoding == 'deflate':
return zlib.decompress(data, -zlib.MAX_WBITS)
elif encoding == 'gzip':
return zlib.decompress(data, 16 + zlib.MAX_WBITS)
elif encoding == 'identity':
return data
else:
raise RuntimeError('unknown content encoding: {}'.format(encoding))
def _decode_content_transfer(self, data: bytes) -> bytes:
encoding = self.headers.get(CONTENT_TRANSFER_ENCODING, '').lower()
if encoding == 'base64':
return base64.b64decode(data)
elif encoding == 'quoted-printable':
return binascii.a2b_qp(data)
elif encoding in ('binary', '8bit', '7bit'):
return data
else:
raise RuntimeError('unknown content transfer encoding: {}'
''.format(encoding))
def get_charset(self, default: str) -> str:
"""Returns charset parameter from Content-Type header or default."""
ctype = self.headers.get(CONTENT_TYPE, '')
mimetype = parse_mimetype(ctype)
return mimetype.parameters.get('charset', default)
@reify
def name(self) -> Optional[str]:
"""Returns name specified in Content-Disposition header or None
if missed or header is malformed.
"""
_, params = parse_content_disposition(
self.headers.get(CONTENT_DISPOSITION))
return content_disposition_filename(params, 'name')
@reify
def filename(self) -> Optional[str]:
"""Returns filename specified in Content-Disposition header or None
if missed or header is malformed.
"""
_, params = parse_content_disposition(
self.headers.get(CONTENT_DISPOSITION))
return content_disposition_filename(params, 'filename')
@payload_type(BodyPartReader, order=Order.try_first)
class BodyPartReaderPayload(Payload):
def __init__(self, value: BodyPartReader,
*args: Any, **kwargs: Any) -> None:
super().__init__(value, *args, **kwargs)
params = {} # type: Dict[str, str]
if value.name is not None:
params['name'] = value.name
if value.filename is not None:
params['filename'] = value.filename
if params:
self.set_content_disposition('attachment', True, **params)
async def write(self, writer: Any) -> None:
field = self._value
chunk = await field.read_chunk(size=2**16)
while chunk:
await writer.write(field.decode(chunk))
chunk = await field.read_chunk(size=2**16)
class MultipartReader:
"""Multipart body reader."""
#: Response wrapper, used when multipart readers constructs from response.
response_wrapper_cls = MultipartResponseWrapper
#: Multipart reader class, used to handle multipart/* body parts.
#: None points to type(self)
multipart_reader_cls = None
#: Body part reader class for non multipart/* content types.
part_reader_cls = BodyPartReader
def __init__(self, headers: Mapping[str, str],
content: StreamReader) -> None:
self.headers = headers
self._boundary = ('--' + self._get_boundary()).encode()
self._content = content
self._last_part = None # type: Optional[Union['MultipartReader', BodyPartReader]] # noqa
self._at_eof = False
self._at_bof = True
self._unread = [] # type: List[bytes]
def __aiter__(self) -> 'MultipartReader':
return self
async def __anext__(
self,
) -> Union['MultipartReader', BodyPartReader]:
part = await self.next()
if part is None:
raise StopAsyncIteration # NOQA
return part
@classmethod
def from_response(
cls,
response: 'ClientResponse',
) -> MultipartResponseWrapper:
"""Constructs reader instance from HTTP response.
:param response: :class:`~aiohttp.client.ClientResponse` instance
"""
obj = cls.response_wrapper_cls(response, cls(response.headers,
response.content))
return obj
def at_eof(self) -> bool:
"""Returns True if the final boundary was reached or
False otherwise.
"""
return self._at_eof
async def next(
self,
) -> Optional[Union['MultipartReader', BodyPartReader]]:
"""Emits the next multipart body part."""
# So, if we're at BOF, we need to skip till the boundary.
if self._at_eof:
return None
await self._maybe_release_last_part()
if self._at_bof:
await self._read_until_first_boundary()
self._at_bof = False
else:
await self._read_boundary()
if self._at_eof: # we just read the last boundary, nothing to do there
return None
self._last_part = await self.fetch_next_part()
return self._last_part
async def release(self) -> None:
"""Reads all the body parts to the void till the final boundary."""
while not self._at_eof:
item = await self.next()
if item is None:
break
await item.release()
async def fetch_next_part(
self,
) -> Union['MultipartReader', BodyPartReader]:
"""Returns the next body part reader."""
headers = await self._read_headers()
return self._get_part_reader(headers)
def _get_part_reader(
self,
headers: 'CIMultiDictProxy[str]',
) -> Union['MultipartReader', BodyPartReader]:
"""Dispatches the response by the `Content-Type` header, returning
suitable reader instance.
:param dict headers: Response headers
"""
ctype = headers.get(CONTENT_TYPE, '')
mimetype = parse_mimetype(ctype)
if mimetype.type == 'multipart':
if self.multipart_reader_cls is None:
return type(self)(headers, self._content)
return self.multipart_reader_cls(headers, self._content)
else:
return self.part_reader_cls(self._boundary, headers, self._content)
def _get_boundary(self) -> str:
mimetype = parse_mimetype(self.headers[CONTENT_TYPE])
assert mimetype.type == 'multipart', (
'multipart/* content type expected'
)
if 'boundary' not in mimetype.parameters:
raise ValueError('boundary missed for Content-Type: %s'
% self.headers[CONTENT_TYPE])
boundary = mimetype.parameters['boundary']
if len(boundary) > 70:
raise ValueError('boundary %r is too long (70 chars max)'
% boundary)
return boundary
async def _readline(self) -> bytes:
if self._unread:
return self._unread.pop()
return await self._content.readline()
async def _read_until_first_boundary(self) -> None:
while True:
chunk = await self._readline()
if chunk == b'':
raise ValueError("Could not find starting boundary %r"
% (self._boundary))
chunk = chunk.rstrip()
if chunk == self._boundary:
return
elif chunk == self._boundary + b'--':
self._at_eof = True
return
async def _read_boundary(self) -> None:
chunk = (await self._readline()).rstrip()
if chunk == self._boundary:
pass
elif chunk == self._boundary + b'--':
self._at_eof = True
epilogue = await self._readline()
next_line = await self._readline()
# the epilogue is expected and then either the end of input or the
# parent multipart boundary, if the parent boundary is found then
# it should be marked as unread and handed to the parent for
# processing
if next_line[:2] == b'--':
self._unread.append(next_line)
# otherwise the request is likely missing an epilogue and both
# lines should be passed to the parent for processing
# (this handles the old behavior gracefully)
else:
self._unread.extend([next_line, epilogue])
else:
raise ValueError('Invalid boundary %r, expected %r'
% (chunk, self._boundary))
async def _read_headers(self) -> 'CIMultiDictProxy[str]':
lines = [b'']
while True:
chunk = await self._content.readline()
chunk = chunk.strip()
lines.append(chunk)
if not chunk:
break
parser = HeadersParser()
headers, raw_headers = parser.parse_headers(lines)
return headers
async def _maybe_release_last_part(self) -> None:
"""Ensures that the last read body part is read completely."""
if self._last_part is not None:
if not self._last_part.at_eof():
await self._last_part.release()
self._unread.extend(self._last_part._unread)
self._last_part = None
_Part = Tuple[Payload, str, str]
class MultipartWriter(Payload):
"""Multipart body writer."""
def __init__(self, subtype: str='mixed',
boundary: Optional[str]=None) -> None:
boundary = boundary if boundary is not None else uuid.uuid4().hex
# The underlying Payload API demands a str (utf-8), not bytes,
# so we need to ensure we don't lose anything during conversion.
# As a result, require the boundary to be ASCII only.
# In both situations.
try:
self._boundary = boundary.encode('ascii')
except UnicodeEncodeError:
raise ValueError('boundary should contain ASCII only chars') \
from None
ctype = ('multipart/{}; boundary={}'
.format(subtype, self._boundary_value))
super().__init__(None, content_type=ctype)
self._parts = [] # type: List[_Part] # noqa
def __enter__(self) -> 'MultipartWriter':
return self
def __exit__(self,
exc_type: Optional[Type[BaseException]],
exc_val: Optional[BaseException],
exc_tb: Optional[TracebackType]) -> None:
pass
def __iter__(self) -> Iterator[_Part]:
return iter(self._parts)
def __len__(self) -> int:
return len(self._parts)
def __bool__(self) -> bool:
return True
_valid_tchar_regex = re.compile(br"\A[!#$%&'*+\-.^_`|~\w]+\Z")
_invalid_qdtext_char_regex = re.compile(br"[\x00-\x08\x0A-\x1F\x7F]")
@property
def _boundary_value(self) -> str:
"""Wrap boundary parameter value in quotes, if necessary.
Reads self.boundary and returns a unicode sting.
"""
# Refer to RFCs 7231, 7230, 5234.
#
# parameter = token "=" ( token / quoted-string )
# token = 1*tchar
# quoted-string = DQUOTE *( qdtext / quoted-pair ) DQUOTE
# qdtext = HTAB / SP / %x21 / %x23-5B / %x5D-7E / obs-text
# obs-text = %x80-FF
# quoted-pair = "\" ( HTAB / SP / VCHAR / obs-text )
# tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*"
# / "+" / "-" / "." / "^" / "_" / "`" / "|" / "~"
# / DIGIT / ALPHA
# ; any VCHAR, except delimiters
# VCHAR = %x21-7E
value = self._boundary
if re.match(self._valid_tchar_regex, value):
return value.decode('ascii') # cannot fail
if re.search(self._invalid_qdtext_char_regex, value):
raise ValueError("boundary value contains invalid characters")
# escape %x5C and %x22
quoted_value_content = value.replace(b'\\', b'\\\\')
quoted_value_content = quoted_value_content.replace(b'"', b'\\"')
return '"' + quoted_value_content.decode('ascii') + '"'
@property
def boundary(self) -> str:
return self._boundary.decode('ascii')
def append(
self,
obj: Any,
headers: Optional[MultiMapping[str]]=None
) -> Payload:
if headers is None:
headers = CIMultiDict()
if isinstance(obj, Payload):
obj.headers.update(headers)
return self.append_payload(obj)
else:
try:
payload = get_payload(obj, headers=headers)
except LookupError:
raise TypeError('Cannot create payload from %r' % obj)
else:
return self.append_payload(payload)
def append_payload(self, payload: Payload) -> Payload:
"""Adds a new body part to multipart writer."""
# compression
encoding = payload.headers.get(
CONTENT_ENCODING,
'',
).lower() # type: Optional[str]
if encoding and encoding not in ('deflate', 'gzip', 'identity'):
raise RuntimeError('unknown content encoding: {}'.format(encoding))
if encoding == 'identity':
encoding = None
# te encoding
te_encoding = payload.headers.get(
CONTENT_TRANSFER_ENCODING,
'',
).lower() # type: Optional[str]
if te_encoding not in ('', 'base64', 'quoted-printable', 'binary'):
raise RuntimeError('unknown content transfer encoding: {}'
''.format(te_encoding))
if te_encoding == 'binary':
te_encoding = None
# size
size = payload.size
if size is not None and not (encoding or te_encoding):
payload.headers[CONTENT_LENGTH] = str(size)
self._parts.append((payload, encoding, te_encoding)) # type: ignore
return payload
def append_json(
self,
obj: Any,
headers: Optional[MultiMapping[str]]=None
) -> Payload:
"""Helper to append JSON part."""
if headers is None:
headers = CIMultiDict()
return self.append_payload(JsonPayload(obj, headers=headers))
def append_form(
self,
obj: Union[Sequence[Tuple[str, str]],
Mapping[str, str]],
headers: Optional[MultiMapping[str]]=None
) -> Payload:
"""Helper to append form urlencoded part."""
assert isinstance(obj, (Sequence, Mapping))
if headers is None:
headers = CIMultiDict()
if isinstance(obj, Mapping):
obj = list(obj.items())
data = urlencode(obj, doseq=True)
return self.append_payload(
StringPayload(data, headers=headers,
content_type='application/x-www-form-urlencoded'))
@property
def size(self) -> Optional[int]:
"""Size of the payload."""
total = 0
for part, encoding, te_encoding in self._parts:
if encoding or te_encoding or part.size is None:
return None
total += int(
2 + len(self._boundary) + 2 + # b'--'+self._boundary+b'\r\n'
part.size + len(part._binary_headers) +
2 # b'\r\n'
)
total += 2 + len(self._boundary) + 4 # b'--'+self._boundary+b'--\r\n'
return total
async def write(self, writer: Any,
close_boundary: bool=True) -> None:
"""Write body."""
for part, encoding, te_encoding in self._parts:
await writer.write(b'--' + self._boundary + b'\r\n')
await writer.write(part._binary_headers)
if encoding or te_encoding:
w = MultipartPayloadWriter(writer)
if encoding:
w.enable_compression(encoding)
if te_encoding:
w.enable_encoding(te_encoding)
await part.write(w) # type: ignore
await w.write_eof()
else:
await part.write(writer)
await writer.write(b'\r\n')
if close_boundary:
await writer.write(b'--' + self._boundary + b'--\r\n')
class MultipartPayloadWriter:
def __init__(self, writer: Any) -> None:
self._writer = writer
self._encoding = None # type: Optional[str]
self._compress = None # type: Any
self._encoding_buffer = None # type: Optional[bytearray]
def enable_encoding(self, encoding: str) -> None:
if encoding == 'base64':
self._encoding = encoding
self._encoding_buffer = bytearray()
elif encoding == 'quoted-printable':
self._encoding = 'quoted-printable'
def enable_compression(self, encoding: str='deflate') -> None:
zlib_mode = (16 + zlib.MAX_WBITS
if encoding == 'gzip' else -zlib.MAX_WBITS)
self._compress = zlib.compressobj(wbits=zlib_mode)
async def write_eof(self) -> None:
if self._compress is not None:
chunk = self._compress.flush()
if chunk:
self._compress = None
await self.write(chunk)
if self._encoding == 'base64':
if self._encoding_buffer:
await self._writer.write(base64.b64encode(
self._encoding_buffer))
async def write(self, chunk: bytes) -> None:
if self._compress is not None:
if chunk:
chunk = self._compress.compress(chunk)
if not chunk:
return
if self._encoding == 'base64':
buf = self._encoding_buffer
assert buf is not None
buf.extend(chunk)
if buf:
div, mod = divmod(len(buf), 3)
enc_chunk, self._encoding_buffer = (
buf[:div * 3], buf[div * 3:])
if enc_chunk:
b64chunk = base64.b64encode(enc_chunk)
await self._writer.write(b64chunk)
elif self._encoding == 'quoted-printable':
await self._writer.write(binascii.b2a_qp(chunk))
else:
await self._writer.write(chunk)

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import asyncio
import enum
import io
import json
import mimetypes
import os
import warnings
from abc import ABC, abstractmethod
from itertools import chain
from typing import (
IO,
TYPE_CHECKING,
Any,
ByteString,
Dict,
Iterable,
Optional,
Text,
TextIO,
Tuple,
Type,
Union,
)
from multidict import CIMultiDict
from . import hdrs
from .abc import AbstractStreamWriter
from .helpers import (
PY_36,
content_disposition_header,
guess_filename,
parse_mimetype,
sentinel,
)
from .streams import DEFAULT_LIMIT, StreamReader
from .typedefs import JSONEncoder, _CIMultiDict
__all__ = ('PAYLOAD_REGISTRY', 'get_payload', 'payload_type', 'Payload',
'BytesPayload', 'StringPayload',
'IOBasePayload', 'BytesIOPayload', 'BufferedReaderPayload',
'TextIOPayload', 'StringIOPayload', 'JsonPayload',
'AsyncIterablePayload')
TOO_LARGE_BYTES_BODY = 2 ** 20 # 1 MB
if TYPE_CHECKING: # pragma: no cover
from typing import List # noqa
class LookupError(Exception):
pass
class Order(str, enum.Enum):
normal = 'normal'
try_first = 'try_first'
try_last = 'try_last'
def get_payload(data: Any, *args: Any, **kwargs: Any) -> 'Payload':
return PAYLOAD_REGISTRY.get(data, *args, **kwargs)
def register_payload(factory: Type['Payload'],
type: Any,
*,
order: Order=Order.normal) -> None:
PAYLOAD_REGISTRY.register(factory, type, order=order)
class payload_type:
def __init__(self, type: Any, *, order: Order=Order.normal) -> None:
self.type = type
self.order = order
def __call__(self, factory: Type['Payload']) -> Type['Payload']:
register_payload(factory, self.type, order=self.order)
return factory
class PayloadRegistry:
"""Payload registry.
note: we need zope.interface for more efficient adapter search
"""
def __init__(self) -> None:
self._first = [] # type: List[Tuple[Type[Payload], Any]]
self._normal = [] # type: List[Tuple[Type[Payload], Any]]
self._last = [] # type: List[Tuple[Type[Payload], Any]]
def get(self,
data: Any,
*args: Any,
_CHAIN: Any=chain,
**kwargs: Any) -> 'Payload':
if isinstance(data, Payload):
return data
for factory, type in _CHAIN(self._first, self._normal, self._last):
if isinstance(data, type):
return factory(data, *args, **kwargs)
raise LookupError()
def register(self,
factory: Type['Payload'],
type: Any,
*,
order: Order=Order.normal) -> None:
if order is Order.try_first:
self._first.append((factory, type))
elif order is Order.normal:
self._normal.append((factory, type))
elif order is Order.try_last:
self._last.append((factory, type))
else:
raise ValueError("Unsupported order {!r}".format(order))
class Payload(ABC):
_default_content_type = 'application/octet-stream' # type: str
_size = None # type: Optional[int]
def __init__(self,
value: Any,
headers: Optional[
Union[
_CIMultiDict,
Dict[str, str],
Iterable[Tuple[str, str]]
]
] = None,
content_type: Optional[str]=sentinel,
filename: Optional[str]=None,
encoding: Optional[str]=None,
**kwargs: Any) -> None:
self._encoding = encoding
self._filename = filename
self._headers = CIMultiDict() # type: _CIMultiDict
self._value = value
if content_type is not sentinel and content_type is not None:
self._headers[hdrs.CONTENT_TYPE] = content_type
elif self._filename is not None:
content_type = mimetypes.guess_type(self._filename)[0]
if content_type is None:
content_type = self._default_content_type
self._headers[hdrs.CONTENT_TYPE] = content_type
else:
self._headers[hdrs.CONTENT_TYPE] = self._default_content_type
self._headers.update(headers or {})
@property
def size(self) -> Optional[int]:
"""Size of the payload."""
return self._size
@property
def filename(self) -> Optional[str]:
"""Filename of the payload."""
return self._filename
@property
def headers(self) -> _CIMultiDict:
"""Custom item headers"""
return self._headers
@property
def _binary_headers(self) -> bytes:
return ''.join(
[k + ': ' + v + '\r\n' for k, v in self.headers.items()]
).encode('utf-8') + b'\r\n'
@property
def encoding(self) -> Optional[str]:
"""Payload encoding"""
return self._encoding
@property
def content_type(self) -> str:
"""Content type"""
return self._headers[hdrs.CONTENT_TYPE]
def set_content_disposition(self,
disptype: str,
quote_fields: bool=True,
**params: Any) -> None:
"""Sets ``Content-Disposition`` header."""
self._headers[hdrs.CONTENT_DISPOSITION] = content_disposition_header(
disptype, quote_fields=quote_fields, **params)
@abstractmethod
async def write(self, writer: AbstractStreamWriter) -> None:
"""Write payload.
writer is an AbstractStreamWriter instance:
"""
class BytesPayload(Payload):
def __init__(self,
value: ByteString,
*args: Any,
**kwargs: Any) -> None:
if not isinstance(value, (bytes, bytearray, memoryview)):
raise TypeError("value argument must be byte-ish, not {!r}"
.format(type(value)))
if 'content_type' not in kwargs:
kwargs['content_type'] = 'application/octet-stream'
super().__init__(value, *args, **kwargs)
self._size = len(value)
if self._size > TOO_LARGE_BYTES_BODY:
if PY_36:
kwargs = {'source': self}
else:
kwargs = {}
warnings.warn("Sending a large body directly with raw bytes might"
" lock the event loop. You should probably pass an "
"io.BytesIO object instead", ResourceWarning,
**kwargs)
async def write(self, writer: AbstractStreamWriter) -> None:
await writer.write(self._value)
class StringPayload(BytesPayload):
def __init__(self,
value: Text,
*args: Any,
encoding: Optional[str]=None,
content_type: Optional[str]=None,
**kwargs: Any) -> None:
if encoding is None:
if content_type is None:
real_encoding = 'utf-8'
content_type = 'text/plain; charset=utf-8'
else:
mimetype = parse_mimetype(content_type)
real_encoding = mimetype.parameters.get('charset', 'utf-8')
else:
if content_type is None:
content_type = 'text/plain; charset=%s' % encoding
real_encoding = encoding
super().__init__(
value.encode(real_encoding),
encoding=real_encoding,
content_type=content_type,
*args,
**kwargs,
)
class StringIOPayload(StringPayload):
def __init__(self,
value: IO[str],
*args: Any,
**kwargs: Any) -> None:
super().__init__(value.read(), *args, **kwargs)
class IOBasePayload(Payload):
def __init__(self,
value: IO[Any],
disposition: str='attachment',
*args: Any,
**kwargs: Any) -> None:
if 'filename' not in kwargs:
kwargs['filename'] = guess_filename(value)
super().__init__(value, *args, **kwargs)
if self._filename is not None and disposition is not None:
if hdrs.CONTENT_DISPOSITION not in self.headers:
self.set_content_disposition(
disposition, filename=self._filename
)
async def write(self, writer: AbstractStreamWriter) -> None:
loop = asyncio.get_event_loop()
try:
chunk = await loop.run_in_executor(
None, self._value.read, DEFAULT_LIMIT
)
while chunk:
await writer.write(chunk)
chunk = await loop.run_in_executor(
None, self._value.read, DEFAULT_LIMIT
)
finally:
await loop.run_in_executor(None, self._value.close)
class TextIOPayload(IOBasePayload):
def __init__(self,
value: TextIO,
*args: Any,
encoding: Optional[str]=None,
content_type: Optional[str]=None,
**kwargs: Any) -> None:
if encoding is None:
if content_type is None:
encoding = 'utf-8'
content_type = 'text/plain; charset=utf-8'
else:
mimetype = parse_mimetype(content_type)
encoding = mimetype.parameters.get('charset', 'utf-8')
else:
if content_type is None:
content_type = 'text/plain; charset=%s' % encoding
super().__init__(
value,
content_type=content_type,
encoding=encoding,
*args,
**kwargs,
)
@property
def size(self) -> Optional[int]:
try:
return os.fstat(self._value.fileno()).st_size - self._value.tell()
except OSError:
return None
async def write(self, writer: AbstractStreamWriter) -> None:
loop = asyncio.get_event_loop()
try:
chunk = await loop.run_in_executor(
None, self._value.read, DEFAULT_LIMIT
)
while chunk:
await writer.write(chunk.encode(self._encoding))
chunk = await loop.run_in_executor(
None, self._value.read, DEFAULT_LIMIT
)
finally:
await loop.run_in_executor(None, self._value.close)
class BytesIOPayload(IOBasePayload):
@property
def size(self) -> int:
position = self._value.tell()
end = self._value.seek(0, os.SEEK_END)
self._value.seek(position)
return end - position
class BufferedReaderPayload(IOBasePayload):
@property
def size(self) -> Optional[int]:
try:
return os.fstat(self._value.fileno()).st_size - self._value.tell()
except OSError:
# data.fileno() is not supported, e.g.
# io.BufferedReader(io.BytesIO(b'data'))
return None
class JsonPayload(BytesPayload):
def __init__(self,
value: Any,
encoding: str='utf-8',
content_type: str='application/json',
dumps: JSONEncoder=json.dumps,
*args: Any,
**kwargs: Any) -> None:
super().__init__(
dumps(value).encode(encoding),
content_type=content_type, encoding=encoding, *args, **kwargs)
if TYPE_CHECKING: # pragma: no cover
from typing import AsyncIterator, AsyncIterable
_AsyncIterator = AsyncIterator[bytes]
_AsyncIterable = AsyncIterable[bytes]
else:
from collections.abc import AsyncIterable, AsyncIterator
_AsyncIterator = AsyncIterator
_AsyncIterable = AsyncIterable
class AsyncIterablePayload(Payload):
_iter = None # type: Optional[_AsyncIterator]
def __init__(self,
value: _AsyncIterable,
*args: Any,
**kwargs: Any) -> None:
if not isinstance(value, AsyncIterable):
raise TypeError("value argument must support "
"collections.abc.AsyncIterablebe interface, "
"got {!r}".format(type(value)))
if 'content_type' not in kwargs:
kwargs['content_type'] = 'application/octet-stream'
super().__init__(value, *args, **kwargs)
self._iter = value.__aiter__()
async def write(self, writer: AbstractStreamWriter) -> None:
if self._iter:
try:
# iter is not None check prevents rare cases
# when the case iterable is used twice
while True:
chunk = await self._iter.__anext__()
await writer.write(chunk)
except StopAsyncIteration:
self._iter = None
class StreamReaderPayload(AsyncIterablePayload):
def __init__(self, value: StreamReader, *args: Any, **kwargs: Any) -> None:
super().__init__(value.iter_any(), *args, **kwargs)
PAYLOAD_REGISTRY = PayloadRegistry()
PAYLOAD_REGISTRY.register(BytesPayload, (bytes, bytearray, memoryview))
PAYLOAD_REGISTRY.register(StringPayload, str)
PAYLOAD_REGISTRY.register(StringIOPayload, io.StringIO)
PAYLOAD_REGISTRY.register(TextIOPayload, io.TextIOBase)
PAYLOAD_REGISTRY.register(BytesIOPayload, io.BytesIO)
PAYLOAD_REGISTRY.register(
BufferedReaderPayload, (io.BufferedReader, io.BufferedRandom))
PAYLOAD_REGISTRY.register(IOBasePayload, io.IOBase)
PAYLOAD_REGISTRY.register(StreamReaderPayload, StreamReader)
# try_last for giving a chance to more specialized async interables like
# multidict.BodyPartReaderPayload override the default
PAYLOAD_REGISTRY.register(AsyncIterablePayload, AsyncIterable,
order=Order.try_last)

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""" Payload implemenation for coroutines as data provider.
As a simple case, you can upload data from file::
@aiohttp.streamer
async def file_sender(writer, file_name=None):
with open(file_name, 'rb') as f:
chunk = f.read(2**16)
while chunk:
await writer.write(chunk)
chunk = f.read(2**16)
Then you can use `file_sender` like this:
async with session.post('http://httpbin.org/post',
data=file_sender(file_name='huge_file')) as resp:
print(await resp.text())
..note:: Coroutine must accept `writer` as first argument
"""
import asyncio
import warnings
from typing import Any, Awaitable, Callable, Dict, Tuple
from .abc import AbstractStreamWriter
from .payload import Payload, payload_type
__all__ = ('streamer',)
class _stream_wrapper:
def __init__(self,
coro: Callable[..., Awaitable[None]],
args: Tuple[Any, ...],
kwargs: Dict[str, Any]) -> None:
self.coro = asyncio.coroutine(coro)
self.args = args
self.kwargs = kwargs
async def __call__(self, writer: AbstractStreamWriter) -> None:
await self.coro(writer, *self.args, **self.kwargs)
class streamer:
def __init__(self, coro: Callable[..., Awaitable[None]]) -> None:
warnings.warn("@streamer is deprecated, use async generators instead",
DeprecationWarning,
stacklevel=2)
self.coro = coro
def __call__(self, *args: Any, **kwargs: Any) -> _stream_wrapper:
return _stream_wrapper(self.coro, args, kwargs)
@payload_type(_stream_wrapper)
class StreamWrapperPayload(Payload):
async def write(self, writer: AbstractStreamWriter) -> None:
await self._value(writer)
@payload_type(streamer)
class StreamPayload(StreamWrapperPayload):
def __init__(self, value: Any, *args: Any, **kwargs: Any) -> None:
super().__init__(value(), *args, **kwargs)
async def write(self, writer: AbstractStreamWriter) -> None:
await self._value(writer)

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import asyncio
import contextlib
import warnings
from collections.abc import Callable
import pytest
from aiohttp.helpers import PY_37, isasyncgenfunction
from aiohttp.web import Application
from .test_utils import (
BaseTestServer,
RawTestServer,
TestClient,
TestServer,
loop_context,
setup_test_loop,
teardown_test_loop,
)
from .test_utils import unused_port as _unused_port
try:
import uvloop
except ImportError: # pragma: no cover
uvloop = None
try:
import tokio
except ImportError: # pragma: no cover
tokio = None
def pytest_addoption(parser): # type: ignore
parser.addoption(
'--aiohttp-fast', action='store_true', default=False,
help='run tests faster by disabling extra checks')
parser.addoption(
'--aiohttp-loop', action='store', default='pyloop',
help='run tests with specific loop: pyloop, uvloop, tokio or all')
parser.addoption(
'--aiohttp-enable-loop-debug', action='store_true', default=False,
help='enable event loop debug mode')
def pytest_fixture_setup(fixturedef): # type: ignore
"""
Allow fixtures to be coroutines. Run coroutine fixtures in an event loop.
"""
func = fixturedef.func
if isasyncgenfunction(func):
# async generator fixture
is_async_gen = True
elif asyncio.iscoroutinefunction(func):
# regular async fixture
is_async_gen = False
else:
# not an async fixture, nothing to do
return
strip_request = False
if 'request' not in fixturedef.argnames:
fixturedef.argnames += ('request',)
strip_request = True
def wrapper(*args, **kwargs): # type: ignore
request = kwargs['request']
if strip_request:
del kwargs['request']
# if neither the fixture nor the test use the 'loop' fixture,
# 'getfixturevalue' will fail because the test is not parameterized
# (this can be removed someday if 'loop' is no longer parameterized)
if 'loop' not in request.fixturenames:
raise Exception(
"Asynchronous fixtures must depend on the 'loop' fixture or "
"be used in tests depending from it."
)
_loop = request.getfixturevalue('loop')
if is_async_gen:
# for async generators, we need to advance the generator once,
# then advance it again in a finalizer
gen = func(*args, **kwargs)
def finalizer(): # type: ignore
try:
return _loop.run_until_complete(gen.__anext__())
except StopAsyncIteration: # NOQA
pass
request.addfinalizer(finalizer)
return _loop.run_until_complete(gen.__anext__())
else:
return _loop.run_until_complete(func(*args, **kwargs))
fixturedef.func = wrapper
@pytest.fixture
def fast(request): # type: ignore
"""--fast config option"""
return request.config.getoption('--aiohttp-fast')
@pytest.fixture
def loop_debug(request): # type: ignore
"""--enable-loop-debug config option"""
return request.config.getoption('--aiohttp-enable-loop-debug')
@contextlib.contextmanager
def _runtime_warning_context(): # type: ignore
"""
Context manager which checks for RuntimeWarnings, specifically to
avoid "coroutine 'X' was never awaited" warnings being missed.
If RuntimeWarnings occur in the context a RuntimeError is raised.
"""
with warnings.catch_warnings(record=True) as _warnings:
yield
rw = ['{w.filename}:{w.lineno}:{w.message}'.format(w=w)
for w in _warnings # type: ignore
if w.category == RuntimeWarning]
if rw:
raise RuntimeError('{} Runtime Warning{},\n{}'.format(
len(rw),
'' if len(rw) == 1 else 's',
'\n'.join(rw)
))
@contextlib.contextmanager
def _passthrough_loop_context(loop, fast=False): # type: ignore
"""
setups and tears down a loop unless one is passed in via the loop
argument when it's passed straight through.
"""
if loop:
# loop already exists, pass it straight through
yield loop
else:
# this shadows loop_context's standard behavior
loop = setup_test_loop()
yield loop
teardown_test_loop(loop, fast=fast)
def pytest_pycollect_makeitem(collector, name, obj): # type: ignore
"""
Fix pytest collecting for coroutines.
"""
if collector.funcnamefilter(name) and asyncio.iscoroutinefunction(obj):
return list(collector._genfunctions(name, obj))
def pytest_pyfunc_call(pyfuncitem): # type: ignore
"""
Run coroutines in an event loop instead of a normal function call.
"""
fast = pyfuncitem.config.getoption("--aiohttp-fast")
if asyncio.iscoroutinefunction(pyfuncitem.function):
existing_loop = pyfuncitem.funcargs.get('proactor_loop')\
or pyfuncitem.funcargs.get('loop', None)
with _runtime_warning_context():
with _passthrough_loop_context(existing_loop, fast=fast) as _loop:
testargs = {arg: pyfuncitem.funcargs[arg]
for arg in pyfuncitem._fixtureinfo.argnames}
_loop.run_until_complete(pyfuncitem.obj(**testargs))
return True
def pytest_generate_tests(metafunc): # type: ignore
if 'loop_factory' not in metafunc.fixturenames:
return
loops = metafunc.config.option.aiohttp_loop
avail_factories = {'pyloop': asyncio.DefaultEventLoopPolicy}
if uvloop is not None: # pragma: no cover
avail_factories['uvloop'] = uvloop.EventLoopPolicy
if tokio is not None: # pragma: no cover
avail_factories['tokio'] = tokio.EventLoopPolicy
if loops == 'all':
loops = 'pyloop,uvloop?,tokio?'
factories = {} # type: ignore
for name in loops.split(','):
required = not name.endswith('?')
name = name.strip(' ?')
if name not in avail_factories: # pragma: no cover
if required:
raise ValueError(
"Unknown loop '%s', available loops: %s" % (
name, list(factories.keys())))
else:
continue
factories[name] = avail_factories[name]
metafunc.parametrize("loop_factory",
list(factories.values()),
ids=list(factories.keys()))
@pytest.fixture
def loop(loop_factory, fast, loop_debug): # type: ignore
"""Return an instance of the event loop."""
policy = loop_factory()
asyncio.set_event_loop_policy(policy)
with loop_context(fast=fast) as _loop:
if loop_debug:
_loop.set_debug(True) # pragma: no cover
asyncio.set_event_loop(_loop)
yield _loop
@pytest.fixture
def proactor_loop(): # type: ignore
if not PY_37:
policy = asyncio.get_event_loop_policy()
policy._loop_factory = asyncio.ProactorEventLoop # type: ignore
else:
policy = asyncio.WindowsProactorEventLoopPolicy() # type: ignore
asyncio.set_event_loop_policy(policy)
with loop_context(policy.new_event_loop) as _loop:
asyncio.set_event_loop(_loop)
yield _loop
@pytest.fixture
def unused_port(aiohttp_unused_port): # type: ignore # pragma: no cover
warnings.warn("Deprecated, use aiohttp_unused_port fixture instead",
DeprecationWarning)
return aiohttp_unused_port
@pytest.fixture
def aiohttp_unused_port(): # type: ignore
"""Return a port that is unused on the current host."""
return _unused_port
@pytest.fixture
def aiohttp_server(loop): # type: ignore
"""Factory to create a TestServer instance, given an app.
aiohttp_server(app, **kwargs)
"""
servers = []
async def go(app, *, port=None, **kwargs): # type: ignore
server = TestServer(app, port=port)
await server.start_server(loop=loop, **kwargs)
servers.append(server)
return server
yield go
async def finalize(): # type: ignore
while servers:
await servers.pop().close()
loop.run_until_complete(finalize())
@pytest.fixture
def test_server(aiohttp_server): # type: ignore # pragma: no cover
warnings.warn("Deprecated, use aiohttp_server fixture instead",
DeprecationWarning)
return aiohttp_server
@pytest.fixture
def aiohttp_raw_server(loop): # type: ignore
"""Factory to create a RawTestServer instance, given a web handler.
aiohttp_raw_server(handler, **kwargs)
"""
servers = []
async def go(handler, *, port=None, **kwargs): # type: ignore
server = RawTestServer(handler, port=port)
await server.start_server(loop=loop, **kwargs)
servers.append(server)
return server
yield go
async def finalize(): # type: ignore
while servers:
await servers.pop().close()
loop.run_until_complete(finalize())
@pytest.fixture
def raw_test_server(aiohttp_raw_server): # type: ignore # pragma: no cover
warnings.warn("Deprecated, use aiohttp_raw_server fixture instead",
DeprecationWarning)
return aiohttp_raw_server
@pytest.fixture
def aiohttp_client(loop): # type: ignore
"""Factory to create a TestClient instance.
aiohttp_client(app, **kwargs)
aiohttp_client(server, **kwargs)
aiohttp_client(raw_server, **kwargs)
"""
clients = []
async def go(__param, *args, server_kwargs=None, **kwargs): # type: ignore
if (isinstance(__param, Callable) and # type: ignore
not isinstance(__param, (Application, BaseTestServer))):
__param = __param(loop, *args, **kwargs)
kwargs = {}
else:
assert not args, "args should be empty"
if isinstance(__param, Application):
server_kwargs = server_kwargs or {}
server = TestServer(__param, loop=loop, **server_kwargs)
client = TestClient(server, loop=loop, **kwargs)
elif isinstance(__param, BaseTestServer):
client = TestClient(__param, loop=loop, **kwargs)
else:
raise ValueError("Unknown argument type: %r" % type(__param))
await client.start_server()
clients.append(client)
return client
yield go
async def finalize(): # type: ignore
while clients:
await clients.pop().close()
loop.run_until_complete(finalize())
@pytest.fixture
def test_client(aiohttp_client): # type: ignore # pragma: no cover
warnings.warn("Deprecated, use aiohttp_client fixture instead",
DeprecationWarning)
return aiohttp_client

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matteo_env/Lib/site-packages/aiohttp/resolver.py Normal file
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import asyncio
import socket
from typing import Any, Dict, List, Optional
from .abc import AbstractResolver
from .helpers import get_running_loop
__all__ = ('ThreadedResolver', 'AsyncResolver', 'DefaultResolver')
try:
import aiodns
# aiodns_default = hasattr(aiodns.DNSResolver, 'gethostbyname')
except ImportError: # pragma: no cover
aiodns = None
aiodns_default = False
class ThreadedResolver(AbstractResolver):
"""Use Executor for synchronous getaddrinfo() calls, which defaults to
concurrent.futures.ThreadPoolExecutor.
"""
def __init__(self, loop: Optional[asyncio.AbstractEventLoop]=None) -> None:
self._loop = get_running_loop(loop)
async def resolve(self, host: str, port: int=0,
family: int=socket.AF_INET) -> List[Dict[str, Any]]:
infos = await self._loop.getaddrinfo(
host, port, type=socket.SOCK_STREAM, family=family)
hosts = []
for family, _, proto, _, address in infos:
hosts.append(
{'hostname': host,
'host': address[0], 'port': address[1],
'family': family, 'proto': proto,
'flags': socket.AI_NUMERICHOST})
return hosts
async def close(self) -> None:
pass
class AsyncResolver(AbstractResolver):
"""Use the `aiodns` package to make asynchronous DNS lookups"""
def __init__(self, loop: Optional[asyncio.AbstractEventLoop]=None,
*args: Any, **kwargs: Any) -> None:
if aiodns is None:
raise RuntimeError("Resolver requires aiodns library")
self._loop = get_running_loop(loop)
self._resolver = aiodns.DNSResolver(*args, loop=loop, **kwargs)
if not hasattr(self._resolver, 'gethostbyname'):
# aiodns 1.1 is not available, fallback to DNSResolver.query
self.resolve = self._resolve_with_query # type: ignore
async def resolve(self, host: str, port: int=0,
family: int=socket.AF_INET) -> List[Dict[str, Any]]:
try:
resp = await self._resolver.gethostbyname(host, family)
except aiodns.error.DNSError as exc:
msg = exc.args[1] if len(exc.args) >= 1 else "DNS lookup failed"
raise OSError(msg) from exc
hosts = []
for address in resp.addresses:
hosts.append(
{'hostname': host,
'host': address, 'port': port,
'family': family, 'proto': 0,
'flags': socket.AI_NUMERICHOST})
if not hosts:
raise OSError("DNS lookup failed")
return hosts
async def _resolve_with_query(
self, host: str, port: int=0,
family: int=socket.AF_INET) -> List[Dict[str, Any]]:
if family == socket.AF_INET6:
qtype = 'AAAA'
else:
qtype = 'A'
try:
resp = await self._resolver.query(host, qtype)
except aiodns.error.DNSError as exc:
msg = exc.args[1] if len(exc.args) >= 1 else "DNS lookup failed"
raise OSError(msg) from exc
hosts = []
for rr in resp:
hosts.append(
{'hostname': host,
'host': rr.host, 'port': port,
'family': family, 'proto': 0,
'flags': socket.AI_NUMERICHOST})
if not hosts:
raise OSError("DNS lookup failed")
return hosts
async def close(self) -> None:
return self._resolver.cancel()
DefaultResolver = AsyncResolver if aiodns_default else ThreadedResolver

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matteo_env/Lib/site-packages/aiohttp/signals.py Normal file
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from aiohttp.frozenlist import FrozenList
__all__ = ('Signal',)
class Signal(FrozenList):
"""Coroutine-based signal implementation.
To connect a callback to a signal, use any list method.
Signals are fired using the send() coroutine, which takes named
arguments.
"""
__slots__ = ('_owner',)
def __init__(self, owner):
super().__init__()
self._owner = owner
def __repr__(self):
return '<Signal owner={}, frozen={}, {!r}>'.format(self._owner,
self.frozen,
list(self))
async def send(self, *args, **kwargs):
"""
Sends data to all registered receivers.
"""
if not self.frozen:
raise RuntimeError("Cannot send non-frozen signal.")
for receiver in self:
await receiver(*args, **kwargs) # type: ignore

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matteo_env/Lib/site-packages/aiohttp/signals.pyi Normal file
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from typing import Any, Generic, TypeVar
from aiohttp.frozenlist import FrozenList
__all__ = ('Signal',)
_T = TypeVar('_T')
class Signal(FrozenList[_T], Generic[_T]):
def __init__(self, owner: Any) -> None: ...
def __repr__(self) -> str: ...
async def send(self, *args: Any, **kwargs: Any) -> None: ...

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matteo_env/Lib/site-packages/aiohttp/streams.py Normal file
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import asyncio
import collections
import warnings
from typing import List # noqa
from typing import Awaitable, Callable, Generic, Optional, Tuple, TypeVar
from .base_protocol import BaseProtocol
from .helpers import BaseTimerContext, set_exception, set_result
from .log import internal_logger
try: # pragma: no cover
from typing import Deque # noqa
except ImportError:
from typing_extensions import Deque # noqa
__all__ = (
'EMPTY_PAYLOAD', 'EofStream', 'StreamReader', 'DataQueue',
'FlowControlDataQueue')
DEFAULT_LIMIT = 2 ** 16
_T = TypeVar('_T')
class EofStream(Exception):
"""eof stream indication."""
class AsyncStreamIterator(Generic[_T]):
def __init__(self, read_func: Callable[[], Awaitable[_T]]) -> None:
self.read_func = read_func
def __aiter__(self) -> 'AsyncStreamIterator[_T]':
return self
async def __anext__(self) -> _T:
try:
rv = await self.read_func()
except EofStream:
raise StopAsyncIteration # NOQA
if rv == b'':
raise StopAsyncIteration # NOQA
return rv
class ChunkTupleAsyncStreamIterator:
def __init__(self, stream: 'StreamReader') -> None:
self._stream = stream
def __aiter__(self) -> 'ChunkTupleAsyncStreamIterator':
return self
async def __anext__(self) -> Tuple[bytes, bool]:
rv = await self._stream.readchunk()
if rv == (b'', False):
raise StopAsyncIteration # NOQA
return rv
class AsyncStreamReaderMixin:
def __aiter__(self) -> AsyncStreamIterator[bytes]:
return AsyncStreamIterator(self.readline) # type: ignore
def iter_chunked(self, n: int) -> AsyncStreamIterator[bytes]:
"""Returns an asynchronous iterator that yields chunks of size n.
Python-3.5 available for Python 3.5+ only
"""
return AsyncStreamIterator(lambda: self.read(n)) # type: ignore
def iter_any(self) -> AsyncStreamIterator[bytes]:
"""Returns an asynchronous iterator that yields all the available
data as soon as it is received
Python-3.5 available for Python 3.5+ only
"""
return AsyncStreamIterator(self.readany) # type: ignore
def iter_chunks(self) -> ChunkTupleAsyncStreamIterator:
"""Returns an asynchronous iterator that yields chunks of data
as they are received by the server. The yielded objects are tuples
of (bytes, bool) as returned by the StreamReader.readchunk method.
Python-3.5 available for Python 3.5+ only
"""
return ChunkTupleAsyncStreamIterator(self) # type: ignore
class StreamReader(AsyncStreamReaderMixin):
"""An enhancement of asyncio.StreamReader.
Supports asynchronous iteration by line, chunk or as available::
async for line in reader:
...
async for chunk in reader.iter_chunked(1024):
...
async for slice in reader.iter_any():
...
"""
total_bytes = 0
def __init__(self, protocol: BaseProtocol,
*, limit: int=DEFAULT_LIMIT,
timer: Optional[BaseTimerContext]=None,
loop: Optional[asyncio.AbstractEventLoop]=None) -> None:
self._protocol = protocol
self._low_water = limit
self._high_water = limit * 2
if loop is None:
loop = asyncio.get_event_loop()
self._loop = loop
self._size = 0
self._cursor = 0
self._http_chunk_splits = None # type: Optional[List[int]]
self._buffer = collections.deque() # type: Deque[bytes]
self._buffer_offset = 0
self._eof = False
self._waiter = None # type: Optional[asyncio.Future[None]]
self._eof_waiter = None # type: Optional[asyncio.Future[None]]
self._exception = None # type: Optional[BaseException]
self._timer = timer
self._eof_callbacks = [] # type: List[Callable[[], None]]
def __repr__(self) -> str:
info = [self.__class__.__name__]
if self._size:
info.append('%d bytes' % self._size)
if self._eof:
info.append('eof')
if self._low_water != DEFAULT_LIMIT:
info.append('low=%d high=%d' % (self._low_water, self._high_water))
if self._waiter:
info.append('w=%r' % self._waiter)
if self._exception:
info.append('e=%r' % self._exception)
return '<%s>' % ' '.join(info)
def exception(self) -> Optional[BaseException]:
return self._exception
def set_exception(self, exc: BaseException) -> None:
self._exception = exc
self._eof_callbacks.clear()
waiter = self._waiter
if waiter is not None:
self._waiter = None
set_exception(waiter, exc)
waiter = self._eof_waiter
if waiter is not None:
self._eof_waiter = None
set_exception(waiter, exc)
def on_eof(self, callback: Callable[[], None]) -> None:
if self._eof:
try:
callback()
except Exception:
internal_logger.exception('Exception in eof callback')
else:
self._eof_callbacks.append(callback)
def feed_eof(self) -> None:
self._eof = True
waiter = self._waiter
if waiter is not None:
self._waiter = None
set_result(waiter, None)
waiter = self._eof_waiter
if waiter is not None:
self._eof_waiter = None
set_result(waiter, None)
for cb in self._eof_callbacks:
try:
cb()
except Exception:
internal_logger.exception('Exception in eof callback')
self._eof_callbacks.clear()
def is_eof(self) -> bool:
"""Return True if 'feed_eof' was called."""
return self._eof
def at_eof(self) -> bool:
"""Return True if the buffer is empty and 'feed_eof' was called."""
return self._eof and not self._buffer
async def wait_eof(self) -> None:
if self._eof:
return
assert self._eof_waiter is None
self._eof_waiter = self._loop.create_future()
try:
await self._eof_waiter
finally:
self._eof_waiter = None
def unread_data(self, data: bytes) -> None:
""" rollback reading some data from stream, inserting it to buffer head.
"""
warnings.warn("unread_data() is deprecated "
"and will be removed in future releases (#3260)",
DeprecationWarning,
stacklevel=2)
if not data:
return
if self._buffer_offset:
self._buffer[0] = self._buffer[0][self._buffer_offset:]
self._buffer_offset = 0
self._size += len(data)
self._cursor -= len(data)
self._buffer.appendleft(data)
self._eof_counter = 0
# TODO: size is ignored, remove the param later
def feed_data(self, data: bytes, size: int=0) -> None:
assert not self._eof, 'feed_data after feed_eof'
if not data:
return
self._size += len(data)
self._buffer.append(data)
self.total_bytes += len(data)
waiter = self._waiter
if waiter is not None:
self._waiter = None
set_result(waiter, None)
if (self._size > self._high_water and
not self._protocol._reading_paused):
self._protocol.pause_reading()
def begin_http_chunk_receiving(self) -> None:
if self._http_chunk_splits is None:
if self.total_bytes:
raise RuntimeError("Called begin_http_chunk_receiving when"
"some data was already fed")
self._http_chunk_splits = []
def end_http_chunk_receiving(self) -> None:
if self._http_chunk_splits is None:
raise RuntimeError("Called end_chunk_receiving without calling "
"begin_chunk_receiving first")
# self._http_chunk_splits contains logical byte offsets from start of
# the body transfer. Each offset is the offset of the end of a chunk.
# "Logical" means bytes, accessible for a user.
# If no chunks containig logical data were received, current position
# is difinitely zero.
pos = self._http_chunk_splits[-1] if self._http_chunk_splits else 0
if self.total_bytes == pos:
# We should not add empty chunks here. So we check for that.
# Note, when chunked + gzip is used, we can receive a chunk
# of compressed data, but that data may not be enough for gzip FSM
# to yield any uncompressed data. That's why current position may
# not change after receiving a chunk.
return
self._http_chunk_splits.append(self.total_bytes)
# wake up readchunk when end of http chunk received
waiter = self._waiter
if waiter is not None:
self._waiter = None
set_result(waiter, None)
async def _wait(self, func_name: str) -> None:
# StreamReader uses a future to link the protocol feed_data() method
# to a read coroutine. Running two read coroutines at the same time
# would have an unexpected behaviour. It would not possible to know
# which coroutine would get the next data.
if self._waiter is not None:
raise RuntimeError('%s() called while another coroutine is '
'already waiting for incoming data' % func_name)
waiter = self._waiter = self._loop.create_future()
try:
if self._timer:
with self._timer:
await waiter
else:
await waiter
finally:
self._waiter = None
async def readline(self) -> bytes:
if self._exception is not None:
raise self._exception
line = []
line_size = 0
not_enough = True
while not_enough:
while self._buffer and not_enough:
offset = self._buffer_offset
ichar = self._buffer[0].find(b'\n', offset) + 1
# Read from current offset to found b'\n' or to the end.
data = self._read_nowait_chunk(ichar - offset if ichar else -1)
line.append(data)
line_size += len(data)
if ichar:
not_enough = False
if line_size > self._high_water:
raise ValueError('Line is too long')
if self._eof:
break
if not_enough:
await self._wait('readline')
return b''.join(line)
async def read(self, n: int=-1) -> bytes:
if self._exception is not None:
raise self._exception
# migration problem; with DataQueue you have to catch
# EofStream exception, so common way is to run payload.read() inside
# infinite loop. what can cause real infinite loop with StreamReader
# lets keep this code one major release.
if __debug__:
if self._eof and not self._buffer:
self._eof_counter = getattr(self, '_eof_counter', 0) + 1
if self._eof_counter > 5:
internal_logger.warning(
'Multiple access to StreamReader in eof state, '
'might be infinite loop.', stack_info=True)
if not n:
return b''
if n < 0:
# This used to just loop creating a new waiter hoping to
# collect everything in self._buffer, but that would
# deadlock if the subprocess sends more than self.limit
# bytes. So just call self.readany() until EOF.
blocks = []
while True:
block = await self.readany()
if not block:
break
blocks.append(block)
return b''.join(blocks)
# TODO: should be `if` instead of `while`
# because waiter maybe triggered on chunk end,
# without feeding any data
while not self._buffer and not self._eof:
await self._wait('read')
return self._read_nowait(n)
async def readany(self) -> bytes:
if self._exception is not None:
raise self._exception
# TODO: should be `if` instead of `while`
# because waiter maybe triggered on chunk end,
# without feeding any data
while not self._buffer and not self._eof:
await self._wait('readany')
return self._read_nowait(-1)
async def readchunk(self) -> Tuple[bytes, bool]:
"""Returns a tuple of (data, end_of_http_chunk). When chunked transfer
encoding is used, end_of_http_chunk is a boolean indicating if the end
of the data corresponds to the end of a HTTP chunk , otherwise it is
always False.
"""
while True:
if self._exception is not None:
raise self._exception
while self._http_chunk_splits:
pos = self._http_chunk_splits.pop(0)
if pos == self._cursor:
return (b"", True)
if pos > self._cursor:
return (self._read_nowait(pos-self._cursor), True)
internal_logger.warning('Skipping HTTP chunk end due to data '
'consumption beyond chunk boundary')
if self._buffer:
return (self._read_nowait_chunk(-1), False)
# return (self._read_nowait(-1), False)
if self._eof:
# Special case for signifying EOF.
# (b'', True) is not a final return value actually.
return (b'', False)
await self._wait('readchunk')
async def readexactly(self, n: int) -> bytes:
if self._exception is not None:
raise self._exception
blocks = [] # type: List[bytes]
while n > 0:
block = await self.read(n)
if not block:
partial = b''.join(blocks)
raise asyncio.IncompleteReadError(
partial, len(partial) + n)
blocks.append(block)
n -= len(block)
return b''.join(blocks)
def read_nowait(self, n: int=-1) -> bytes:
# default was changed to be consistent with .read(-1)
#
# I believe the most users don't know about the method and
# they are not affected.
if self._exception is not None:
raise self._exception
if self._waiter and not self._waiter.done():
raise RuntimeError(
'Called while some coroutine is waiting for incoming data.')
return self._read_nowait(n)
def _read_nowait_chunk(self, n: int) -> bytes:
first_buffer = self._buffer[0]
offset = self._buffer_offset
if n != -1 and len(first_buffer) - offset > n:
data = first_buffer[offset:offset + n]
self._buffer_offset += n
elif offset:
self._buffer.popleft()
data = first_buffer[offset:]
self._buffer_offset = 0
else:
data = self._buffer.popleft()
self._size -= len(data)
self._cursor += len(data)
chunk_splits = self._http_chunk_splits
# Prevent memory leak: drop useless chunk splits
while chunk_splits and chunk_splits[0] < self._cursor:
chunk_splits.pop(0)
if self._size < self._low_water and self._protocol._reading_paused:
self._protocol.resume_reading()
return data
def _read_nowait(self, n: int) -> bytes:
""" Read not more than n bytes, or whole buffer is n == -1 """
chunks = []
while self._buffer:
chunk = self._read_nowait_chunk(n)
chunks.append(chunk)
if n != -1:
n -= len(chunk)
if n == 0:
break
return b''.join(chunks) if chunks else b''
class EmptyStreamReader(AsyncStreamReaderMixin):
def exception(self) -> Optional[BaseException]:
return None
def set_exception(self, exc: BaseException) -> None:
pass
def on_eof(self, callback: Callable[[], None]) -> None:
try:
callback()
except Exception:
internal_logger.exception('Exception in eof callback')
def feed_eof(self) -> None:
pass
def is_eof(self) -> bool:
return True
def at_eof(self) -> bool:
return True
async def wait_eof(self) -> None:
return
def feed_data(self, data: bytes, n: int=0) -> None:
pass
async def readline(self) -> bytes:
return b''
async def read(self, n: int=-1) -> bytes:
return b''
async def readany(self) -> bytes:
return b''
async def readchunk(self) -> Tuple[bytes, bool]:
return (b'', True)
async def readexactly(self, n: int) -> bytes:
raise asyncio.IncompleteReadError(b'', n)
def read_nowait(self) -> bytes:
return b''
EMPTY_PAYLOAD = EmptyStreamReader()
class DataQueue(Generic[_T]):
"""DataQueue is a general-purpose blocking queue with one reader."""
def __init__(self, loop: asyncio.AbstractEventLoop) -> None:
self._loop = loop
self._eof = False
self._waiter = None # type: Optional[asyncio.Future[None]]
self._exception = None # type: Optional[BaseException]
self._size = 0
self._buffer = collections.deque() # type: Deque[Tuple[_T, int]]
def __len__(self) -> int:
return len(self._buffer)
def is_eof(self) -> bool:
return self._eof
def at_eof(self) -> bool:
return self._eof and not self._buffer
def exception(self) -> Optional[BaseException]:
return self._exception
def set_exception(self, exc: BaseException) -> None:
self._eof = True
self._exception = exc
waiter = self._waiter
if waiter is not None:
self._waiter = None
set_exception(waiter, exc)
def feed_data(self, data: _T, size: int=0) -> None:
self._size += size
self._buffer.append((data, size))
waiter = self._waiter
if waiter is not None:
self._waiter = None
set_result(waiter, None)
def feed_eof(self) -> None:
self._eof = True
waiter = self._waiter
if waiter is not None:
self._waiter = None
set_result(waiter, None)
async def read(self) -> _T:
if not self._buffer and not self._eof:
assert not self._waiter
self._waiter = self._loop.create_future()
try:
await self._waiter
except (asyncio.CancelledError, asyncio.TimeoutError):
self._waiter = None
raise
if self._buffer:
data, size = self._buffer.popleft()
self._size -= size
return data
else:
if self._exception is not None:
raise self._exception
else:
raise EofStream
def __aiter__(self) -> AsyncStreamIterator[_T]:
return AsyncStreamIterator(self.read)
class FlowControlDataQueue(DataQueue[_T]):
"""FlowControlDataQueue resumes and pauses an underlying stream.
It is a destination for parsed data."""
def __init__(self, protocol: BaseProtocol, *,
limit: int=DEFAULT_LIMIT,
loop: asyncio.AbstractEventLoop) -> None:
super().__init__(loop=loop)
self._protocol = protocol
self._limit = limit * 2
def feed_data(self, data: _T, size: int=0) -> None:
super().feed_data(data, size)
if self._size > self._limit and not self._protocol._reading_paused:
self._protocol.pause_reading()
async def read(self) -> _T:
try:
return await super().read()
finally:
if self._size < self._limit and self._protocol._reading_paused:
self._protocol.resume_reading()

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"""Helper methods to tune a TCP connection"""
import asyncio
import socket
from contextlib import suppress
from typing import Optional # noqa
__all__ = ('tcp_keepalive', 'tcp_nodelay', 'tcp_cork')
if hasattr(socket, 'TCP_CORK'): # pragma: no cover
CORK = socket.TCP_CORK # type: Optional[int]
elif hasattr(socket, 'TCP_NOPUSH'): # pragma: no cover
CORK = socket.TCP_NOPUSH # type: ignore
else: # pragma: no cover
CORK = None
if hasattr(socket, 'SO_KEEPALIVE'):
def tcp_keepalive(transport: asyncio.Transport) -> None:
sock = transport.get_extra_info('socket')
if sock is not None:
sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
else:
def tcp_keepalive(
transport: asyncio.Transport) -> None: # pragma: no cover
pass
def tcp_nodelay(transport: asyncio.Transport, value: bool) -> None:
sock = transport.get_extra_info('socket')
if sock is None:
return
if sock.family not in (socket.AF_INET, socket.AF_INET6):
return
value = bool(value)
# socket may be closed already, on windows OSError get raised
with suppress(OSError):
sock.setsockopt(
socket.IPPROTO_TCP, socket.TCP_NODELAY, value)
def tcp_cork(transport: asyncio.Transport, value: bool) -> None:
sock = transport.get_extra_info('socket')
if CORK is None:
return
if sock is None:
return
if sock.family not in (socket.AF_INET, socket.AF_INET6):
return
value = bool(value)
with suppress(OSError):
sock.setsockopt(
socket.IPPROTO_TCP, CORK, value)

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"""Utilities shared by tests."""
import asyncio
import contextlib
import functools
import gc
import inspect
import socket
import sys
import unittest
from abc import ABC, abstractmethod
from types import TracebackType
from typing import ( # noqa
TYPE_CHECKING,
Any,
Callable,
Iterator,
List,
Optional,
Type,
Union,
)
from unittest import mock
from multidict import CIMultiDict, CIMultiDictProxy
from yarl import URL
import aiohttp
from aiohttp.client import (
ClientResponse,
_RequestContextManager,
_WSRequestContextManager,
)
from . import ClientSession, hdrs
from .abc import AbstractCookieJar
from .client_reqrep import ClientResponse # noqa
from .client_ws import ClientWebSocketResponse # noqa
from .helpers import sentinel
from .http import HttpVersion, RawRequestMessage
from .signals import Signal
from .web import (
Application,
AppRunner,
BaseRunner,
Request,
Server,
ServerRunner,
SockSite,
UrlMappingMatchInfo,
)
from .web_protocol import _RequestHandler
if TYPE_CHECKING: # pragma: no cover
from ssl import SSLContext
else:
SSLContext = None
def get_unused_port_socket(host: str) -> socket.socket:
return get_port_socket(host, 0)
def get_port_socket(host: str, port: int) -> socket.socket:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((host, port))
return s
def unused_port() -> int:
"""Return a port that is unused on the current host."""
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
s.bind(('127.0.0.1', 0))
return s.getsockname()[1]
class BaseTestServer(ABC):
__test__ = False
def __init__(self,
*,
scheme: Union[str, object]=sentinel,
loop: Optional[asyncio.AbstractEventLoop]=None,
host: str='127.0.0.1',
port: Optional[int]=None,
skip_url_asserts: bool=False,
**kwargs: Any) -> None:
self._loop = loop
self.runner = None # type: Optional[BaseRunner]
self._root = None # type: Optional[URL]
self.host = host
self.port = port
self._closed = False
self.scheme = scheme
self.skip_url_asserts = skip_url_asserts
async def start_server(self,
loop: Optional[asyncio.AbstractEventLoop]=None,
**kwargs: Any) -> None:
if self.runner:
return
self._loop = loop
self._ssl = kwargs.pop('ssl', None)
self.runner = await self._make_runner(**kwargs)
await self.runner.setup()
if not self.port:
self.port = 0
_sock = get_port_socket(self.host, self.port)
self.host, self.port = _sock.getsockname()[:2]
site = SockSite(self.runner, sock=_sock, ssl_context=self._ssl)
await site.start()
server = site._server
assert server is not None
sockets = server.sockets
assert sockets is not None
self.port = sockets[0].getsockname()[1]
if self.scheme is sentinel:
if self._ssl:
scheme = 'https'
else:
scheme = 'http'
self.scheme = scheme
self._root = URL('{}://{}:{}'.format(self.scheme,
self.host,
self.port))
@abstractmethod # pragma: no cover
async def _make_runner(self, **kwargs: Any) -> BaseRunner:
pass
def make_url(self, path: str) -> URL:
assert self._root is not None
url = URL(path)
if not self.skip_url_asserts:
assert not url.is_absolute()
return self._root.join(url)
else:
return URL(str(self._root) + path)
@property
def started(self) -> bool:
return self.runner is not None
@property
def closed(self) -> bool:
return self._closed
@property
def handler(self) -> Server:
# for backward compatibility
# web.Server instance
runner = self.runner
assert runner is not None
assert runner.server is not None
return runner.server
async def close(self) -> None:
"""Close all fixtures created by the test client.
After that point, the TestClient is no longer usable.
This is an idempotent function: running close multiple times
will not have any additional effects.
close is also run when the object is garbage collected, and on
exit when used as a context manager.
"""
if self.started and not self.closed:
assert self.runner is not None
await self.runner.cleanup()
self._root = None
self.port = None
self._closed = True
def __enter__(self) -> None:
raise TypeError("Use async with instead")
def __exit__(self,
exc_type: Optional[Type[BaseException]],
exc_value: Optional[BaseException],
traceback: Optional[TracebackType]) -> None:
# __exit__ should exist in pair with __enter__ but never executed
pass # pragma: no cover
async def __aenter__(self) -> 'BaseTestServer':
await self.start_server(loop=self._loop)
return self
async def __aexit__(self,
exc_type: Optional[Type[BaseException]],
exc_value: Optional[BaseException],
traceback: Optional[TracebackType]) -> None:
await self.close()
class TestServer(BaseTestServer):
def __init__(self, app: Application, *,
scheme: Union[str, object]=sentinel,
host: str='127.0.0.1',
port: Optional[int]=None,
**kwargs: Any):
self.app = app
super().__init__(scheme=scheme, host=host, port=port, **kwargs)
async def _make_runner(self, **kwargs: Any) -> BaseRunner:
return AppRunner(self.app, **kwargs)
class RawTestServer(BaseTestServer):
def __init__(self, handler: _RequestHandler, *,
scheme: Union[str, object]=sentinel,
host: str='127.0.0.1',
port: Optional[int]=None,
**kwargs: Any) -> None:
self._handler = handler
super().__init__(scheme=scheme, host=host, port=port, **kwargs)
async def _make_runner(self,
debug: bool=True,
**kwargs: Any) -> ServerRunner:
srv = Server(
self._handler, loop=self._loop, debug=debug, **kwargs)
return ServerRunner(srv, debug=debug, **kwargs)
class TestClient:
"""
A test client implementation.
To write functional tests for aiohttp based servers.
"""
__test__ = False
def __init__(self, server: BaseTestServer, *,
cookie_jar: Optional[AbstractCookieJar]=None,
loop: Optional[asyncio.AbstractEventLoop]=None,
**kwargs: Any) -> None:
if not isinstance(server, BaseTestServer):
raise TypeError("server must be TestServer "
"instance, found type: %r" % type(server))
self._server = server
self._loop = loop
if cookie_jar is None:
cookie_jar = aiohttp.CookieJar(unsafe=True, loop=loop)
self._session = ClientSession(loop=loop,
cookie_jar=cookie_jar,
**kwargs)
self._closed = False
self._responses = [] # type: List[ClientResponse]
self._websockets = [] # type: List[ClientWebSocketResponse]
async def start_server(self) -> None:
await self._server.start_server(loop=self._loop)
@property
def host(self) -> str:
return self._server.host
@property
def port(self) -> Optional[int]:
return self._server.port
@property
def server(self) -> BaseTestServer:
return self._server
@property
def app(self) -> Application:
return getattr(self._server, "app", None)
@property
def session(self) -> ClientSession:
"""An internal aiohttp.ClientSession.
Unlike the methods on the TestClient, client session requests
do not automatically include the host in the url queried, and
will require an absolute path to the resource.
"""
return self._session
def make_url(self, path: str) -> URL:
return self._server.make_url(path)
async def _request(self, method: str, path: str,
**kwargs: Any) -> ClientResponse:
resp = await self._session.request(
method, self.make_url(path), **kwargs
)
# save it to close later
self._responses.append(resp)
return resp
def request(self, method: str, path: str,
**kwargs: Any) -> _RequestContextManager:
"""Routes a request to tested http server.
The interface is identical to aiohttp.ClientSession.request,
except the loop kwarg is overridden by the instance used by the
test server.
"""
return _RequestContextManager(
self._request(method, path, **kwargs)
)
def get(self, path: str, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP GET request."""
return _RequestContextManager(
self._request(hdrs.METH_GET, path, **kwargs)
)
def post(self, path: str, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP POST request."""
return _RequestContextManager(
self._request(hdrs.METH_POST, path, **kwargs)
)
def options(self, path: str, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP OPTIONS request."""
return _RequestContextManager(
self._request(hdrs.METH_OPTIONS, path, **kwargs)
)
def head(self, path: str, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP HEAD request."""
return _RequestContextManager(
self._request(hdrs.METH_HEAD, path, **kwargs)
)
def put(self, path: str, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP PUT request."""
return _RequestContextManager(
self._request(hdrs.METH_PUT, path, **kwargs)
)
def patch(self, path: str, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP PATCH request."""
return _RequestContextManager(
self._request(hdrs.METH_PATCH, path, **kwargs)
)
def delete(self, path: str, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP PATCH request."""
return _RequestContextManager(
self._request(hdrs.METH_DELETE, path, **kwargs)
)
def ws_connect(self, path: str, **kwargs: Any) -> _WSRequestContextManager:
"""Initiate websocket connection.
The api corresponds to aiohttp.ClientSession.ws_connect.
"""
return _WSRequestContextManager(
self._ws_connect(path, **kwargs)
)
async def _ws_connect(self, path: str,
**kwargs: Any) -> ClientWebSocketResponse:
ws = await self._session.ws_connect(
self.make_url(path), **kwargs)
self._websockets.append(ws)
return ws
async def close(self) -> None:
"""Close all fixtures created by the test client.
After that point, the TestClient is no longer usable.
This is an idempotent function: running close multiple times
will not have any additional effects.
close is also run on exit when used as a(n) (asynchronous)
context manager.
"""
if not self._closed:
for resp in self._responses:
resp.close()
for ws in self._websockets:
await ws.close()
await self._session.close()
await self._server.close()
self._closed = True
def __enter__(self) -> None:
raise TypeError("Use async with instead")
def __exit__(self,
exc_type: Optional[Type[BaseException]],
exc: Optional[BaseException],
tb: Optional[TracebackType]) -> None:
# __exit__ should exist in pair with __enter__ but never executed
pass # pragma: no cover
async def __aenter__(self) -> 'TestClient':
await self.start_server()
return self
async def __aexit__(self,
exc_type: Optional[Type[BaseException]],
exc: Optional[BaseException],
tb: Optional[TracebackType]) -> None:
await self.close()
class AioHTTPTestCase(unittest.TestCase):
"""A base class to allow for unittest web applications using
aiohttp.
Provides the following:
* self.client (aiohttp.test_utils.TestClient): an aiohttp test client.
* self.loop (asyncio.BaseEventLoop): the event loop in which the
application and server are running.
* self.app (aiohttp.web.Application): the application returned by
self.get_application()
Note that the TestClient's methods are asynchronous: you have to
execute function on the test client using asynchronous methods.
"""
async def get_application(self) -> Application:
"""
This method should be overridden
to return the aiohttp.web.Application
object to test.
"""
return self.get_app()
def get_app(self) -> Application:
"""Obsolete method used to constructing web application.
Use .get_application() coroutine instead
"""
raise RuntimeError("Did you forget to define get_application()?")
def setUp(self) -> None:
self.loop = setup_test_loop()
self.app = self.loop.run_until_complete(self.get_application())
self.server = self.loop.run_until_complete(self.get_server(self.app))
self.client = self.loop.run_until_complete(
self.get_client(self.server))
self.loop.run_until_complete(self.client.start_server())
self.loop.run_until_complete(self.setUpAsync())
async def setUpAsync(self) -> None:
pass
def tearDown(self) -> None:
self.loop.run_until_complete(self.tearDownAsync())
self.loop.run_until_complete(self.client.close())
teardown_test_loop(self.loop)
async def tearDownAsync(self) -> None:
pass
async def get_server(self, app: Application) -> TestServer:
"""Return a TestServer instance."""
return TestServer(app, loop=self.loop)
async def get_client(self, server: TestServer) -> TestClient:
"""Return a TestClient instance."""
return TestClient(server, loop=self.loop)
def unittest_run_loop(func: Any, *args: Any, **kwargs: Any) -> Any:
"""A decorator dedicated to use with asynchronous methods of an
AioHTTPTestCase.
Handles executing an asynchronous function, using
the self.loop of the AioHTTPTestCase.
"""
@functools.wraps(func, *args, **kwargs)
def new_func(self: Any, *inner_args: Any, **inner_kwargs: Any) -> Any:
return self.loop.run_until_complete(
func(self, *inner_args, **inner_kwargs))
return new_func
_LOOP_FACTORY = Callable[[], asyncio.AbstractEventLoop]
@contextlib.contextmanager
def loop_context(loop_factory: _LOOP_FACTORY=asyncio.new_event_loop,
fast: bool=False) -> Iterator[asyncio.AbstractEventLoop]:
"""A contextmanager that creates an event_loop, for test purposes.
Handles the creation and cleanup of a test loop.
"""
loop = setup_test_loop(loop_factory)
yield loop
teardown_test_loop(loop, fast=fast)
def setup_test_loop(
loop_factory: _LOOP_FACTORY=asyncio.new_event_loop
) -> asyncio.AbstractEventLoop:
"""Create and return an asyncio.BaseEventLoop
instance.
The caller should also call teardown_test_loop,
once they are done with the loop.
"""
loop = loop_factory()
try:
module = loop.__class__.__module__
skip_watcher = 'uvloop' in module
except AttributeError: # pragma: no cover
# Just in case
skip_watcher = True
asyncio.set_event_loop(loop)
if sys.platform != "win32" and not skip_watcher:
policy = asyncio.get_event_loop_policy()
watcher = asyncio.SafeChildWatcher() # type: ignore
watcher.attach_loop(loop)
with contextlib.suppress(NotImplementedError):
policy.set_child_watcher(watcher)
return loop
def teardown_test_loop(loop: asyncio.AbstractEventLoop,
fast: bool=False) -> None:
"""Teardown and cleanup an event_loop created
by setup_test_loop.
"""
closed = loop.is_closed()
if not closed:
loop.call_soon(loop.stop)
loop.run_forever()
loop.close()
if not fast:
gc.collect()
asyncio.set_event_loop(None)
def _create_app_mock() -> mock.MagicMock:
def get_dict(app: Any, key: str) -> Any:
return app.__app_dict[key]
def set_dict(app: Any, key: str, value: Any) -> None:
app.__app_dict[key] = value
app = mock.MagicMock()
app.__app_dict = {}
app.__getitem__ = get_dict
app.__setitem__ = set_dict
app._debug = False
app.on_response_prepare = Signal(app)
app.on_response_prepare.freeze()
return app
def _create_transport(sslcontext: Optional[SSLContext]=None) -> mock.Mock:
transport = mock.Mock()
def get_extra_info(key: str) -> Optional[SSLContext]:
if key == 'sslcontext':
return sslcontext
else:
return None
transport.get_extra_info.side_effect = get_extra_info
return transport
def make_mocked_request(method: str, path: str,
headers: Any=None, *,
match_info: Any=sentinel,
version: HttpVersion=HttpVersion(1, 1),
closing: bool=False,
app: Any=None,
writer: Any=sentinel,
protocol: Any=sentinel,
transport: Any=sentinel,
payload: Any=sentinel,
sslcontext: Optional[SSLContext]=None,
client_max_size: int=1024**2,
loop: Any=...) -> Any:
"""Creates mocked web.Request testing purposes.
Useful in unit tests, when spinning full web server is overkill or
specific conditions and errors are hard to trigger.
"""
task = mock.Mock()
if loop is ...:
loop = mock.Mock()
loop.create_future.return_value = ()
if version < HttpVersion(1, 1):
closing = True
if headers:
headers = CIMultiDictProxy(CIMultiDict(headers))
raw_hdrs = tuple(
(k.encode('utf-8'), v.encode('utf-8')) for k, v in headers.items())
else:
headers = CIMultiDictProxy(CIMultiDict())
raw_hdrs = ()
chunked = 'chunked' in headers.get(hdrs.TRANSFER_ENCODING, '').lower()
message = RawRequestMessage(
method, path, version, headers,
raw_hdrs, closing, False, False, chunked, URL(path))
if app is None:
app = _create_app_mock()
if transport is sentinel:
transport = _create_transport(sslcontext)
if protocol is sentinel:
protocol = mock.Mock()
protocol.transport = transport
if writer is sentinel:
writer = mock.Mock()
writer.write_headers = make_mocked_coro(None)
writer.write = make_mocked_coro(None)
writer.write_eof = make_mocked_coro(None)
writer.drain = make_mocked_coro(None)
writer.transport = transport
protocol.transport = transport
protocol.writer = writer
if payload is sentinel:
payload = mock.Mock()
req = Request(message, payload,
protocol, writer, task, loop,
client_max_size=client_max_size)
match_info = UrlMappingMatchInfo(
{} if match_info is sentinel else match_info, mock.Mock())
match_info.add_app(app)
req._match_info = match_info
return req
def make_mocked_coro(return_value: Any=sentinel,
raise_exception: Any=sentinel) -> Any:
"""Creates a coroutine mock."""
async def mock_coro(*args: Any, **kwargs: Any) -> Any:
if raise_exception is not sentinel:
raise raise_exception
if not inspect.isawaitable(return_value):
return return_value
await return_value
return mock.Mock(wraps=mock_coro)

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from types import SimpleNamespace
from typing import TYPE_CHECKING, Awaitable, Callable, Type, Union
import attr
from multidict import CIMultiDict # noqa
from yarl import URL
from .client_reqrep import ClientResponse
from .signals import Signal
if TYPE_CHECKING: # pragma: no cover
from .client import ClientSession # noqa
_SignalArgs = Union[
'TraceRequestStartParams',
'TraceRequestEndParams',
'TraceRequestExceptionParams',
'TraceConnectionQueuedStartParams',
'TraceConnectionQueuedEndParams',
'TraceConnectionCreateStartParams',
'TraceConnectionCreateEndParams',
'TraceConnectionReuseconnParams',
'TraceDnsResolveHostStartParams',
'TraceDnsResolveHostEndParams',
'TraceDnsCacheHitParams',
'TraceDnsCacheMissParams',
'TraceRequestRedirectParams',
'TraceRequestChunkSentParams',
'TraceResponseChunkReceivedParams',
]
_Signal = Signal[Callable[[ClientSession, SimpleNamespace, _SignalArgs],
Awaitable[None]]]
else:
_Signal = Signal
__all__ = (
'TraceConfig', 'TraceRequestStartParams', 'TraceRequestEndParams',
'TraceRequestExceptionParams', 'TraceConnectionQueuedStartParams',
'TraceConnectionQueuedEndParams', 'TraceConnectionCreateStartParams',
'TraceConnectionCreateEndParams', 'TraceConnectionReuseconnParams',
'TraceDnsResolveHostStartParams', 'TraceDnsResolveHostEndParams',
'TraceDnsCacheHitParams', 'TraceDnsCacheMissParams',
'TraceRequestRedirectParams',
'TraceRequestChunkSentParams', 'TraceResponseChunkReceivedParams',
)
class TraceConfig:
"""First-class used to trace requests launched via ClientSession
objects."""
def __init__(
self,
trace_config_ctx_factory: Type[SimpleNamespace]=SimpleNamespace
) -> None:
self._on_request_start = Signal(self) # type: _Signal
self._on_request_chunk_sent = Signal(self) # type: _Signal
self._on_response_chunk_received = Signal(self) # type: _Signal
self._on_request_end = Signal(self) # type: _Signal
self._on_request_exception = Signal(self) # type: _Signal
self._on_request_redirect = Signal(self) # type: _Signal
self._on_connection_queued_start = Signal(self) # type: _Signal
self._on_connection_queued_end = Signal(self) # type: _Signal
self._on_connection_create_start = Signal(self) # type: _Signal
self._on_connection_create_end = Signal(self) # type: _Signal
self._on_connection_reuseconn = Signal(self) # type: _Signal
self._on_dns_resolvehost_start = Signal(self) # type: _Signal
self._on_dns_resolvehost_end = Signal(self) # type: _Signal
self._on_dns_cache_hit = Signal(self) # type: _Signal
self._on_dns_cache_miss = Signal(self) # type: _Signal
self._trace_config_ctx_factory = trace_config_ctx_factory # type: Type[SimpleNamespace] # noqa
def trace_config_ctx(
self,
trace_request_ctx: SimpleNamespace=None
) -> SimpleNamespace: # noqa
""" Return a new trace_config_ctx instance """
return self._trace_config_ctx_factory(
trace_request_ctx=trace_request_ctx)
def freeze(self) -> None:
self._on_request_start.freeze()
self._on_request_chunk_sent.freeze()
self._on_response_chunk_received.freeze()
self._on_request_end.freeze()
self._on_request_exception.freeze()
self._on_request_redirect.freeze()
self._on_connection_queued_start.freeze()
self._on_connection_queued_end.freeze()
self._on_connection_create_start.freeze()
self._on_connection_create_end.freeze()
self._on_connection_reuseconn.freeze()
self._on_dns_resolvehost_start.freeze()
self._on_dns_resolvehost_end.freeze()
self._on_dns_cache_hit.freeze()
self._on_dns_cache_miss.freeze()
@property
def on_request_start(self) -> _Signal:
return self._on_request_start
@property
def on_request_chunk_sent(self) -> _Signal:
return self._on_request_chunk_sent
@property
def on_response_chunk_received(self) -> _Signal:
return self._on_response_chunk_received
@property
def on_request_end(self) -> _Signal:
return self._on_request_end
@property
def on_request_exception(self) -> _Signal:
return self._on_request_exception
@property
def on_request_redirect(self) -> _Signal:
return self._on_request_redirect
@property
def on_connection_queued_start(self) -> _Signal:
return self._on_connection_queued_start
@property
def on_connection_queued_end(self) -> _Signal:
return self._on_connection_queued_end
@property
def on_connection_create_start(self) -> _Signal:
return self._on_connection_create_start
@property
def on_connection_create_end(self) -> _Signal:
return self._on_connection_create_end
@property
def on_connection_reuseconn(self) -> _Signal:
return self._on_connection_reuseconn
@property
def on_dns_resolvehost_start(self) -> _Signal:
return self._on_dns_resolvehost_start
@property
def on_dns_resolvehost_end(self) -> _Signal:
return self._on_dns_resolvehost_end
@property
def on_dns_cache_hit(self) -> _Signal:
return self._on_dns_cache_hit
@property
def on_dns_cache_miss(self) -> _Signal:
return self._on_dns_cache_miss
@attr.s(frozen=True, slots=True)
class TraceRequestStartParams:
""" Parameters sent by the `on_request_start` signal"""
method = attr.ib(type=str)
url = attr.ib(type=URL)
headers = attr.ib(type='CIMultiDict[str]')
@attr.s(frozen=True, slots=True)
class TraceRequestChunkSentParams:
""" Parameters sent by the `on_request_chunk_sent` signal"""
chunk = attr.ib(type=bytes)
@attr.s(frozen=True, slots=True)
class TraceResponseChunkReceivedParams:
""" Parameters sent by the `on_response_chunk_received` signal"""
chunk = attr.ib(type=bytes)
@attr.s(frozen=True, slots=True)
class TraceRequestEndParams:
""" Parameters sent by the `on_request_end` signal"""
method = attr.ib(type=str)
url = attr.ib(type=URL)
headers = attr.ib(type='CIMultiDict[str]')
response = attr.ib(type=ClientResponse)
@attr.s(frozen=True, slots=True)
class TraceRequestExceptionParams:
""" Parameters sent by the `on_request_exception` signal"""
method = attr.ib(type=str)
url = attr.ib(type=URL)
headers = attr.ib(type='CIMultiDict[str]')
exception = attr.ib(type=BaseException)
@attr.s(frozen=True, slots=True)
class TraceRequestRedirectParams:
""" Parameters sent by the `on_request_redirect` signal"""
method = attr.ib(type=str)
url = attr.ib(type=URL)
headers = attr.ib(type='CIMultiDict[str]')
response = attr.ib(type=ClientResponse)
@attr.s(frozen=True, slots=True)
class TraceConnectionQueuedStartParams:
""" Parameters sent by the `on_connection_queued_start` signal"""
@attr.s(frozen=True, slots=True)
class TraceConnectionQueuedEndParams:
""" Parameters sent by the `on_connection_queued_end` signal"""
@attr.s(frozen=True, slots=True)
class TraceConnectionCreateStartParams:
""" Parameters sent by the `on_connection_create_start` signal"""
@attr.s(frozen=True, slots=True)
class TraceConnectionCreateEndParams:
""" Parameters sent by the `on_connection_create_end` signal"""
@attr.s(frozen=True, slots=True)
class TraceConnectionReuseconnParams:
""" Parameters sent by the `on_connection_reuseconn` signal"""
@attr.s(frozen=True, slots=True)
class TraceDnsResolveHostStartParams:
""" Parameters sent by the `on_dns_resolvehost_start` signal"""
host = attr.ib(type=str)
@attr.s(frozen=True, slots=True)
class TraceDnsResolveHostEndParams:
""" Parameters sent by the `on_dns_resolvehost_end` signal"""
host = attr.ib(type=str)
@attr.s(frozen=True, slots=True)
class TraceDnsCacheHitParams:
""" Parameters sent by the `on_dns_cache_hit` signal"""
host = attr.ib(type=str)
@attr.s(frozen=True, slots=True)
class TraceDnsCacheMissParams:
""" Parameters sent by the `on_dns_cache_miss` signal"""
host = attr.ib(type=str)
class Trace:
""" Internal class used to keep together the main dependencies used
at the moment of send a signal."""
def __init__(self,
session: 'ClientSession',
trace_config: TraceConfig,
trace_config_ctx: SimpleNamespace) -> None:
self._trace_config = trace_config
self._trace_config_ctx = trace_config_ctx
self._session = session
async def send_request_start(self,
method: str,
url: URL,
headers: 'CIMultiDict[str]') -> None:
return await self._trace_config.on_request_start.send(
self._session,
self._trace_config_ctx,
TraceRequestStartParams(method, url, headers)
)
async def send_request_chunk_sent(self, chunk: bytes) -> None:
return await self._trace_config.on_request_chunk_sent.send(
self._session,
self._trace_config_ctx,
TraceRequestChunkSentParams(chunk)
)
async def send_response_chunk_received(self, chunk: bytes) -> None:
return await self._trace_config.on_response_chunk_received.send(
self._session,
self._trace_config_ctx,
TraceResponseChunkReceivedParams(chunk)
)
async def send_request_end(self,
method: str,
url: URL,
headers: 'CIMultiDict[str]',
response: ClientResponse) -> None:
return await self._trace_config.on_request_end.send(
self._session,
self._trace_config_ctx,
TraceRequestEndParams(method, url, headers, response)
)
async def send_request_exception(self,
method: str,
url: URL,
headers: 'CIMultiDict[str]',
exception: BaseException) -> None:
return await self._trace_config.on_request_exception.send(
self._session,
self._trace_config_ctx,
TraceRequestExceptionParams(method, url, headers, exception)
)
async def send_request_redirect(self,
method: str,
url: URL,
headers: 'CIMultiDict[str]',
response: ClientResponse) -> None:
return await self._trace_config._on_request_redirect.send(
self._session,
self._trace_config_ctx,
TraceRequestRedirectParams(method, url, headers, response)
)
async def send_connection_queued_start(self) -> None:
return await self._trace_config.on_connection_queued_start.send(
self._session,
self._trace_config_ctx,
TraceConnectionQueuedStartParams()
)
async def send_connection_queued_end(self) -> None:
return await self._trace_config.on_connection_queued_end.send(
self._session,
self._trace_config_ctx,
TraceConnectionQueuedEndParams()
)
async def send_connection_create_start(self) -> None:
return await self._trace_config.on_connection_create_start.send(
self._session,
self._trace_config_ctx,
TraceConnectionCreateStartParams()
)
async def send_connection_create_end(self) -> None:
return await self._trace_config.on_connection_create_end.send(
self._session,
self._trace_config_ctx,
TraceConnectionCreateEndParams()
)
async def send_connection_reuseconn(self) -> None:
return await self._trace_config.on_connection_reuseconn.send(
self._session,
self._trace_config_ctx,
TraceConnectionReuseconnParams()
)
async def send_dns_resolvehost_start(self, host: str) -> None:
return await self._trace_config.on_dns_resolvehost_start.send(
self._session,
self._trace_config_ctx,
TraceDnsResolveHostStartParams(host)
)
async def send_dns_resolvehost_end(self, host: str) -> None:
return await self._trace_config.on_dns_resolvehost_end.send(
self._session,
self._trace_config_ctx,
TraceDnsResolveHostEndParams(host)
)
async def send_dns_cache_hit(self, host: str) -> None:
return await self._trace_config.on_dns_cache_hit.send(
self._session,
self._trace_config_ctx,
TraceDnsCacheHitParams(host)
)
async def send_dns_cache_miss(self, host: str) -> None:
return await self._trace_config.on_dns_cache_miss.send(
self._session,
self._trace_config_ctx,
TraceDnsCacheMissParams(host)
)

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import json
import os # noqa
import pathlib # noqa
import sys
from typing import (
TYPE_CHECKING,
Any,
Callable,
Iterable,
Mapping,
Tuple,
Union,
)
from multidict import (
CIMultiDict,
CIMultiDictProxy,
MultiDict,
MultiDictProxy,
istr,
)
from yarl import URL
DEFAULT_JSON_ENCODER = json.dumps
DEFAULT_JSON_DECODER = json.loads
if TYPE_CHECKING: # pragma: no cover
_CIMultiDict = CIMultiDict[str]
_CIMultiDictProxy = CIMultiDictProxy[str]
_MultiDict = MultiDict[str]
_MultiDictProxy = MultiDictProxy[str]
from http.cookies import BaseCookie # noqa
else:
_CIMultiDict = CIMultiDict
_CIMultiDictProxy = CIMultiDictProxy
_MultiDict = MultiDict
_MultiDictProxy = MultiDictProxy
Byteish = Union[bytes, bytearray, memoryview]
JSONEncoder = Callable[[Any], str]
JSONDecoder = Callable[[str], Any]
LooseHeaders = Union[Mapping[Union[str, istr], str], _CIMultiDict,
_CIMultiDictProxy]
RawHeaders = Tuple[Tuple[bytes, bytes], ...]
StrOrURL = Union[str, URL]
LooseCookies = Union[Iterable[Tuple[str, 'BaseCookie[str]']],
Mapping[str, 'BaseCookie[str]'], 'BaseCookie[str]']
if sys.version_info >= (3, 6):
PathLike = Union[str, 'os.PathLike[str]']
else:
PathLike = Union[str, pathlib.PurePath]

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import asyncio
import logging
import socket
import sys
from argparse import ArgumentParser
from collections.abc import Iterable
from importlib import import_module
from typing import Any, Awaitable, Callable, List, Optional, Type, Union, cast
from .abc import AbstractAccessLogger
from .helpers import all_tasks
from .log import access_logger
from .web_app import Application as Application
from .web_app import CleanupError as CleanupError
from .web_exceptions import HTTPAccepted as HTTPAccepted
from .web_exceptions import HTTPBadGateway as HTTPBadGateway
from .web_exceptions import HTTPBadRequest as HTTPBadRequest
from .web_exceptions import HTTPClientError as HTTPClientError
from .web_exceptions import HTTPConflict as HTTPConflict
from .web_exceptions import HTTPCreated as HTTPCreated
from .web_exceptions import HTTPError as HTTPError
from .web_exceptions import HTTPException as HTTPException
from .web_exceptions import HTTPExpectationFailed as HTTPExpectationFailed
from .web_exceptions import HTTPFailedDependency as HTTPFailedDependency
from .web_exceptions import HTTPForbidden as HTTPForbidden
from .web_exceptions import HTTPFound as HTTPFound
from .web_exceptions import HTTPGatewayTimeout as HTTPGatewayTimeout
from .web_exceptions import HTTPGone as HTTPGone
from .web_exceptions import HTTPInsufficientStorage as HTTPInsufficientStorage
from .web_exceptions import HTTPInternalServerError as HTTPInternalServerError
from .web_exceptions import HTTPLengthRequired as HTTPLengthRequired
from .web_exceptions import HTTPMethodNotAllowed as HTTPMethodNotAllowed
from .web_exceptions import HTTPMisdirectedRequest as HTTPMisdirectedRequest
from .web_exceptions import HTTPMovedPermanently as HTTPMovedPermanently
from .web_exceptions import HTTPMultipleChoices as HTTPMultipleChoices
from .web_exceptions import (
HTTPNetworkAuthenticationRequired as HTTPNetworkAuthenticationRequired,
)
from .web_exceptions import HTTPNoContent as HTTPNoContent
from .web_exceptions import (
HTTPNonAuthoritativeInformation as HTTPNonAuthoritativeInformation,
)
from .web_exceptions import HTTPNotAcceptable as HTTPNotAcceptable
from .web_exceptions import HTTPNotExtended as HTTPNotExtended
from .web_exceptions import HTTPNotFound as HTTPNotFound
from .web_exceptions import HTTPNotImplemented as HTTPNotImplemented
from .web_exceptions import HTTPNotModified as HTTPNotModified
from .web_exceptions import HTTPOk as HTTPOk
from .web_exceptions import HTTPPartialContent as HTTPPartialContent
from .web_exceptions import HTTPPaymentRequired as HTTPPaymentRequired
from .web_exceptions import HTTPPermanentRedirect as HTTPPermanentRedirect
from .web_exceptions import HTTPPreconditionFailed as HTTPPreconditionFailed
from .web_exceptions import (
HTTPPreconditionRequired as HTTPPreconditionRequired,
)
from .web_exceptions import (
HTTPProxyAuthenticationRequired as HTTPProxyAuthenticationRequired,
)
from .web_exceptions import HTTPRedirection as HTTPRedirection
from .web_exceptions import (
HTTPRequestEntityTooLarge as HTTPRequestEntityTooLarge,
)
from .web_exceptions import (
HTTPRequestHeaderFieldsTooLarge as HTTPRequestHeaderFieldsTooLarge,
)
from .web_exceptions import (
HTTPRequestRangeNotSatisfiable as HTTPRequestRangeNotSatisfiable,
)
from .web_exceptions import HTTPRequestTimeout as HTTPRequestTimeout
from .web_exceptions import HTTPRequestURITooLong as HTTPRequestURITooLong
from .web_exceptions import HTTPResetContent as HTTPResetContent
from .web_exceptions import HTTPSeeOther as HTTPSeeOther
from .web_exceptions import HTTPServerError as HTTPServerError
from .web_exceptions import HTTPServiceUnavailable as HTTPServiceUnavailable
from .web_exceptions import HTTPSuccessful as HTTPSuccessful
from .web_exceptions import HTTPTemporaryRedirect as HTTPTemporaryRedirect
from .web_exceptions import HTTPTooManyRequests as HTTPTooManyRequests
from .web_exceptions import HTTPUnauthorized as HTTPUnauthorized
from .web_exceptions import (
HTTPUnavailableForLegalReasons as HTTPUnavailableForLegalReasons,
)
from .web_exceptions import HTTPUnprocessableEntity as HTTPUnprocessableEntity
from .web_exceptions import (
HTTPUnsupportedMediaType as HTTPUnsupportedMediaType,
)
from .web_exceptions import HTTPUpgradeRequired as HTTPUpgradeRequired
from .web_exceptions import HTTPUseProxy as HTTPUseProxy
from .web_exceptions import (
HTTPVariantAlsoNegotiates as HTTPVariantAlsoNegotiates,
)
from .web_exceptions import HTTPVersionNotSupported as HTTPVersionNotSupported
from .web_fileresponse import FileResponse as FileResponse
from .web_log import AccessLogger
from .web_middlewares import middleware as middleware
from .web_middlewares import (
normalize_path_middleware as normalize_path_middleware,
)
from .web_protocol import PayloadAccessError as PayloadAccessError
from .web_protocol import RequestHandler as RequestHandler
from .web_protocol import RequestPayloadError as RequestPayloadError
from .web_request import BaseRequest as BaseRequest
from .web_request import FileField as FileField
from .web_request import Request as Request
from .web_response import ContentCoding as ContentCoding
from .web_response import Response as Response
from .web_response import StreamResponse as StreamResponse
from .web_response import json_response as json_response
from .web_routedef import AbstractRouteDef as AbstractRouteDef
from .web_routedef import RouteDef as RouteDef
from .web_routedef import RouteTableDef as RouteTableDef
from .web_routedef import StaticDef as StaticDef
from .web_routedef import delete as delete
from .web_routedef import get as get
from .web_routedef import head as head
from .web_routedef import options as options
from .web_routedef import patch as patch
from .web_routedef import post as post
from .web_routedef import put as put
from .web_routedef import route as route
from .web_routedef import static as static
from .web_routedef import view as view
from .web_runner import AppRunner as AppRunner
from .web_runner import BaseRunner as BaseRunner
from .web_runner import BaseSite as BaseSite
from .web_runner import GracefulExit as GracefulExit
from .web_runner import NamedPipeSite as NamedPipeSite
from .web_runner import ServerRunner as ServerRunner
from .web_runner import SockSite as SockSite
from .web_runner import TCPSite as TCPSite
from .web_runner import UnixSite as UnixSite
from .web_server import Server as Server
from .web_urldispatcher import AbstractResource as AbstractResource
from .web_urldispatcher import AbstractRoute as AbstractRoute
from .web_urldispatcher import DynamicResource as DynamicResource
from .web_urldispatcher import PlainResource as PlainResource
from .web_urldispatcher import Resource as Resource
from .web_urldispatcher import ResourceRoute as ResourceRoute
from .web_urldispatcher import StaticResource as StaticResource
from .web_urldispatcher import UrlDispatcher as UrlDispatcher
from .web_urldispatcher import UrlMappingMatchInfo as UrlMappingMatchInfo
from .web_urldispatcher import View as View
from .web_ws import WebSocketReady as WebSocketReady
from .web_ws import WebSocketResponse as WebSocketResponse
from .web_ws import WSMsgType as WSMsgType
__all__ = (
# web_app
'Application',
'CleanupError',
# web_exceptions
'HTTPAccepted',
'HTTPBadGateway',
'HTTPBadRequest',
'HTTPClientError',
'HTTPConflict',
'HTTPCreated',
'HTTPError',
'HTTPException',
'HTTPExpectationFailed',
'HTTPFailedDependency',
'HTTPForbidden',
'HTTPFound',
'HTTPGatewayTimeout',
'HTTPGone',
'HTTPInsufficientStorage',
'HTTPInternalServerError',
'HTTPLengthRequired',
'HTTPMethodNotAllowed',
'HTTPMisdirectedRequest',
'HTTPMovedPermanently',
'HTTPMultipleChoices',
'HTTPNetworkAuthenticationRequired',
'HTTPNoContent',
'HTTPNonAuthoritativeInformation',
'HTTPNotAcceptable',
'HTTPNotExtended',
'HTTPNotFound',
'HTTPNotImplemented',
'HTTPNotModified',
'HTTPOk',
'HTTPPartialContent',
'HTTPPaymentRequired',
'HTTPPermanentRedirect',
'HTTPPreconditionFailed',
'HTTPPreconditionRequired',
'HTTPProxyAuthenticationRequired',
'HTTPRedirection',
'HTTPRequestEntityTooLarge',
'HTTPRequestHeaderFieldsTooLarge',
'HTTPRequestRangeNotSatisfiable',
'HTTPRequestTimeout',
'HTTPRequestURITooLong',
'HTTPResetContent',
'HTTPSeeOther',
'HTTPServerError',
'HTTPServiceUnavailable',
'HTTPSuccessful',
'HTTPTemporaryRedirect',
'HTTPTooManyRequests',
'HTTPUnauthorized',
'HTTPUnavailableForLegalReasons',
'HTTPUnprocessableEntity',
'HTTPUnsupportedMediaType',
'HTTPUpgradeRequired',
'HTTPUseProxy',
'HTTPVariantAlsoNegotiates',
'HTTPVersionNotSupported',
# web_fileresponse
'FileResponse',
# web_middlewares
'middleware',
'normalize_path_middleware',
# web_protocol
'PayloadAccessError',
'RequestHandler',
'RequestPayloadError',
# web_request
'BaseRequest',
'FileField',
'Request',
# web_response
'ContentCoding',
'Response',
'StreamResponse',
'json_response',
# web_routedef
'AbstractRouteDef',
'RouteDef',
'RouteTableDef',
'StaticDef',
'delete',
'get',
'head',
'options',
'patch',
'post',
'put',
'route',
'static',
'view',
# web_runner
'AppRunner',
'BaseRunner',
'BaseSite',
'GracefulExit',
'ServerRunner',
'SockSite',
'TCPSite',
'UnixSite',
'NamedPipeSite',
# web_server
'Server',
# web_urldispatcher
'AbstractResource',
'AbstractRoute',
'DynamicResource',
'PlainResource',
'Resource',
'ResourceRoute',
'StaticResource',
'UrlDispatcher',
'UrlMappingMatchInfo',
'View',
# web_ws
'WebSocketReady',
'WebSocketResponse',
'WSMsgType',
# web
'run_app',
)
try:
from ssl import SSLContext
except ImportError: # pragma: no cover
SSLContext = Any # type: ignore
async def _run_app(app: Union[Application, Awaitable[Application]], *,
host: Optional[str]=None,
port: Optional[int]=None,
path: Optional[str]=None,
sock: Optional[socket.socket]=None,
shutdown_timeout: float=60.0,
ssl_context: Optional[SSLContext]=None,
print: Callable[..., None]=print,
backlog: int=128,
access_log_class: Type[AbstractAccessLogger]=AccessLogger,
access_log_format: str=AccessLogger.LOG_FORMAT,
access_log: Optional[logging.Logger]=access_logger,
handle_signals: bool=True,
reuse_address: Optional[bool]=None,
reuse_port: Optional[bool]=None) -> None:
# A internal functio to actually do all dirty job for application running
if asyncio.iscoroutine(app):
app = await app # type: ignore
app = cast(Application, app)
runner = AppRunner(app, handle_signals=handle_signals,
access_log_class=access_log_class,
access_log_format=access_log_format,
access_log=access_log)
await runner.setup()
sites = [] # type: List[BaseSite]
try:
if host is not None:
if isinstance(host, (str, bytes, bytearray, memoryview)):
sites.append(TCPSite(runner, host, port,
shutdown_timeout=shutdown_timeout,
ssl_context=ssl_context,
backlog=backlog,
reuse_address=reuse_address,
reuse_port=reuse_port))
else:
for h in host:
sites.append(TCPSite(runner, h, port,
shutdown_timeout=shutdown_timeout,
ssl_context=ssl_context,
backlog=backlog,
reuse_address=reuse_address,
reuse_port=reuse_port))
elif path is None and sock is None or port is not None:
sites.append(TCPSite(runner, port=port,
shutdown_timeout=shutdown_timeout,
ssl_context=ssl_context, backlog=backlog,
reuse_address=reuse_address,
reuse_port=reuse_port))
if path is not None:
if isinstance(path, (str, bytes, bytearray, memoryview)):
sites.append(UnixSite(runner, path,
shutdown_timeout=shutdown_timeout,
ssl_context=ssl_context,
backlog=backlog))
else:
for p in path:
sites.append(UnixSite(runner, p,
shutdown_timeout=shutdown_timeout,
ssl_context=ssl_context,
backlog=backlog))
if sock is not None:
if not isinstance(sock, Iterable):
sites.append(SockSite(runner, sock,
shutdown_timeout=shutdown_timeout,
ssl_context=ssl_context,
backlog=backlog))
else:
for s in sock:
sites.append(SockSite(runner, s,
shutdown_timeout=shutdown_timeout,
ssl_context=ssl_context,
backlog=backlog))
for site in sites:
await site.start()
if print: # pragma: no branch
names = sorted(str(s.name) for s in runner.sites)
print("======== Running on {} ========\n"
"(Press CTRL+C to quit)".format(', '.join(names)))
while True:
await asyncio.sleep(3600) # sleep forever by 1 hour intervals
finally:
await runner.cleanup()
def _cancel_all_tasks(loop: asyncio.AbstractEventLoop) -> None:
to_cancel = all_tasks(loop)
if not to_cancel:
return
for task in to_cancel:
task.cancel()
loop.run_until_complete(
asyncio.gather(*to_cancel, loop=loop, return_exceptions=True))
for task in to_cancel:
if task.cancelled():
continue
if task.exception() is not None:
loop.call_exception_handler({
'message': 'unhandled exception during asyncio.run() shutdown',
'exception': task.exception(),
'task': task,
})
def run_app(app: Union[Application, Awaitable[Application]], *,
host: Optional[str]=None,
port: Optional[int]=None,
path: Optional[str]=None,
sock: Optional[socket.socket]=None,
shutdown_timeout: float=60.0,
ssl_context: Optional[SSLContext]=None,
print: Callable[..., None]=print,
backlog: int=128,
access_log_class: Type[AbstractAccessLogger]=AccessLogger,
access_log_format: str=AccessLogger.LOG_FORMAT,
access_log: Optional[logging.Logger]=access_logger,
handle_signals: bool=True,
reuse_address: Optional[bool]=None,
reuse_port: Optional[bool]=None) -> None:
"""Run an app locally"""
loop = asyncio.get_event_loop()
# Configure if and only if in debugging mode and using the default logger
if loop.get_debug() and access_log and access_log.name == 'aiohttp.access':
if access_log.level == logging.NOTSET:
access_log.setLevel(logging.DEBUG)
if not access_log.hasHandlers():
access_log.addHandler(logging.StreamHandler())
try:
loop.run_until_complete(_run_app(app,
host=host,
port=port,
path=path,
sock=sock,
shutdown_timeout=shutdown_timeout,
ssl_context=ssl_context,
print=print,
backlog=backlog,
access_log_class=access_log_class,
access_log_format=access_log_format,
access_log=access_log,
handle_signals=handle_signals,
reuse_address=reuse_address,
reuse_port=reuse_port))
except (GracefulExit, KeyboardInterrupt): # pragma: no cover
pass
finally:
_cancel_all_tasks(loop)
if sys.version_info >= (3, 6): # don't use PY_36 to pass mypy
loop.run_until_complete(loop.shutdown_asyncgens())
loop.close()
def main(argv: List[str]) -> None:
arg_parser = ArgumentParser(
description="aiohttp.web Application server",
prog="aiohttp.web"
)
arg_parser.add_argument(
"entry_func",
help=("Callable returning the `aiohttp.web.Application` instance to "
"run. Should be specified in the 'module:function' syntax."),
metavar="entry-func"
)
arg_parser.add_argument(
"-H", "--hostname",
help="TCP/IP hostname to serve on (default: %(default)r)",
default="localhost"
)
arg_parser.add_argument(
"-P", "--port",
help="TCP/IP port to serve on (default: %(default)r)",
type=int,
default="8080"
)
arg_parser.add_argument(
"-U", "--path",
help="Unix file system path to serve on. Specifying a path will cause "
"hostname and port arguments to be ignored.",
)
args, extra_argv = arg_parser.parse_known_args(argv)
# Import logic
mod_str, _, func_str = args.entry_func.partition(":")
if not func_str or not mod_str:
arg_parser.error(
"'entry-func' not in 'module:function' syntax"
)
if mod_str.startswith("."):
arg_parser.error("relative module names not supported")
try:
module = import_module(mod_str)
except ImportError as ex:
arg_parser.error("unable to import %s: %s" % (mod_str, ex))
try:
func = getattr(module, func_str)
except AttributeError:
arg_parser.error("module %r has no attribute %r" % (mod_str, func_str))
# Compatibility logic
if args.path is not None and not hasattr(socket, 'AF_UNIX'):
arg_parser.error("file system paths not supported by your operating"
" environment")
logging.basicConfig(level=logging.DEBUG)
app = func(extra_argv)
run_app(app, host=args.hostname, port=args.port, path=args.path)
arg_parser.exit(message="Stopped\n")
if __name__ == "__main__": # pragma: no branch
main(sys.argv[1:]) # pragma: no cover

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import asyncio
import logging
import warnings
from functools import partial
from typing import ( # noqa
TYPE_CHECKING,
Any,
AsyncIterator,
Awaitable,
Callable,
Dict,
Iterable,
Iterator,
List,
Mapping,
MutableMapping,
Optional,
Sequence,
Tuple,
Type,
Union,
cast,
)
from . import hdrs
from .abc import (
AbstractAccessLogger,
AbstractMatchInfo,
AbstractRouter,
AbstractStreamWriter,
)
from .frozenlist import FrozenList
from .helpers import DEBUG
from .http_parser import RawRequestMessage
from .log import web_logger
from .signals import Signal
from .streams import StreamReader
from .web_log import AccessLogger
from .web_middlewares import _fix_request_current_app
from .web_protocol import RequestHandler
from .web_request import Request
from .web_response import StreamResponse
from .web_routedef import AbstractRouteDef
from .web_server import Server
from .web_urldispatcher import (
AbstractResource,
Domain,
MaskDomain,
MatchedSubAppResource,
PrefixedSubAppResource,
UrlDispatcher,
)
__all__ = ('Application', 'CleanupError')
if TYPE_CHECKING: # pragma: no cover
_AppSignal = Signal[Callable[['Application'], Awaitable[None]]]
_RespPrepareSignal = Signal[Callable[[Request, StreamResponse],
Awaitable[None]]]
_Handler = Callable[[Request], Awaitable[StreamResponse]]
_Middleware = Union[Callable[[Request, _Handler],
Awaitable[StreamResponse]],
Callable[['Application', _Handler], # old-style
Awaitable[_Handler]]]
_Middlewares = FrozenList[_Middleware]
_MiddlewaresHandlers = Optional[Sequence[Tuple[_Middleware, bool]]]
_Subapps = List['Application']
else:
# No type checker mode, skip types
_AppSignal = Signal
_RespPrepareSignal = Signal
_Handler = Callable
_Middleware = Callable
_Middlewares = FrozenList
_MiddlewaresHandlers = Optional[Sequence]
_Subapps = List
class Application(MutableMapping[str, Any]):
ATTRS = frozenset([
'logger', '_debug', '_router', '_loop', '_handler_args',
'_middlewares', '_middlewares_handlers', '_run_middlewares',
'_state', '_frozen', '_pre_frozen', '_subapps',
'_on_response_prepare', '_on_startup', '_on_shutdown',
'_on_cleanup', '_client_max_size', '_cleanup_ctx'])
def __init__(self, *,
logger: logging.Logger=web_logger,
router: Optional[UrlDispatcher]=None,
middlewares: Iterable[_Middleware]=(),
handler_args: Mapping[str, Any]=None,
client_max_size: int=1024**2,
loop: Optional[asyncio.AbstractEventLoop]=None,
debug: Any=... # mypy doesn't support ellipsis
) -> None:
if router is None:
router = UrlDispatcher()
else:
warnings.warn("router argument is deprecated", DeprecationWarning,
stacklevel=2)
assert isinstance(router, AbstractRouter), router
if loop is not None:
warnings.warn("loop argument is deprecated", DeprecationWarning,
stacklevel=2)
if debug is not ...:
warnings.warn("debug argument is deprecated",
DeprecationWarning,
stacklevel=2)
self._debug = debug
self._router = router # type: UrlDispatcher
self._loop = loop
self._handler_args = handler_args
self.logger = logger
self._middlewares = FrozenList(middlewares) # type: _Middlewares
# initialized on freezing
self._middlewares_handlers = None # type: _MiddlewaresHandlers
# initialized on freezing
self._run_middlewares = None # type: Optional[bool]
self._state = {} # type: Dict[str, Any]
self._frozen = False
self._pre_frozen = False
self._subapps = [] # type: _Subapps
self._on_response_prepare = Signal(self) # type: _RespPrepareSignal
self._on_startup = Signal(self) # type: _AppSignal
self._on_shutdown = Signal(self) # type: _AppSignal
self._on_cleanup = Signal(self) # type: _AppSignal
self._cleanup_ctx = CleanupContext()
self._on_startup.append(self._cleanup_ctx._on_startup)
self._on_cleanup.append(self._cleanup_ctx._on_cleanup)
self._client_max_size = client_max_size
def __init_subclass__(cls: Type['Application']) -> None:
warnings.warn("Inheritance class {} from web.Application "
"is discouraged".format(cls.__name__),
DeprecationWarning,
stacklevel=2)
if DEBUG: # pragma: no cover
def __setattr__(self, name: str, val: Any) -> None:
if name not in self.ATTRS:
warnings.warn("Setting custom web.Application.{} attribute "
"is discouraged".format(name),
DeprecationWarning,
stacklevel=2)
super().__setattr__(name, val)
# MutableMapping API
def __eq__(self, other: object) -> bool:
return self is other
def __getitem__(self, key: str) -> Any:
return self._state[key]
def _check_frozen(self) -> None:
if self._frozen:
warnings.warn("Changing state of started or joined "
"application is deprecated",
DeprecationWarning,
stacklevel=3)
def __setitem__(self, key: str, value: Any) -> None:
self._check_frozen()
self._state[key] = value
def __delitem__(self, key: str) -> None:
self._check_frozen()
del self._state[key]
def __len__(self) -> int:
return len(self._state)
def __iter__(self) -> Iterator[str]:
return iter(self._state)
########
@property
def loop(self) -> asyncio.AbstractEventLoop:
# Technically the loop can be None
# but we mask it by explicit type cast
# to provide more convinient type annotation
warnings.warn("loop property is deprecated",
DeprecationWarning,
stacklevel=2)
return cast(asyncio.AbstractEventLoop, self._loop)
def _set_loop(self, loop: Optional[asyncio.AbstractEventLoop]) -> None:
if loop is None:
loop = asyncio.get_event_loop()
if self._loop is not None and self._loop is not loop:
raise RuntimeError(
"web.Application instance initialized with different loop")
self._loop = loop
# set loop debug
if self._debug is ...:
self._debug = loop.get_debug()
# set loop to sub applications
for subapp in self._subapps:
subapp._set_loop(loop)
@property
def pre_frozen(self) -> bool:
return self._pre_frozen
def pre_freeze(self) -> None:
if self._pre_frozen:
return
self._pre_frozen = True
self._middlewares.freeze()
self._router.freeze()
self._on_response_prepare.freeze()
self._cleanup_ctx.freeze()
self._on_startup.freeze()
self._on_shutdown.freeze()
self._on_cleanup.freeze()
self._middlewares_handlers = tuple(self._prepare_middleware())
# If current app and any subapp do not have middlewares avoid run all
# of the code footprint that it implies, which have a middleware
# hardcoded per app that sets up the current_app attribute. If no
# middlewares are configured the handler will receive the proper
# current_app without needing all of this code.
self._run_middlewares = True if self.middlewares else False
for subapp in self._subapps:
subapp.pre_freeze()
self._run_middlewares = (self._run_middlewares or
subapp._run_middlewares)
@property
def frozen(self) -> bool:
return self._frozen
def freeze(self) -> None:
if self._frozen:
return
self.pre_freeze()
self._frozen = True
for subapp in self._subapps:
subapp.freeze()
@property
def debug(self) -> bool:
warnings.warn("debug property is deprecated",
DeprecationWarning,
stacklevel=2)
return self._debug
def _reg_subapp_signals(self, subapp: 'Application') -> None:
def reg_handler(signame: str) -> None:
subsig = getattr(subapp, signame)
async def handler(app: 'Application') -> None:
await subsig.send(subapp)
appsig = getattr(self, signame)
appsig.append(handler)
reg_handler('on_startup')
reg_handler('on_shutdown')
reg_handler('on_cleanup')
def add_subapp(self, prefix: str,
subapp: 'Application') -> AbstractResource:
if not isinstance(prefix, str):
raise TypeError("Prefix must be str")
prefix = prefix.rstrip('/')
if not prefix:
raise ValueError("Prefix cannot be empty")
factory = partial(PrefixedSubAppResource, prefix, subapp)
return self._add_subapp(factory, subapp)
def _add_subapp(self,
resource_factory: Callable[[], AbstractResource],
subapp: 'Application') -> AbstractResource:
if self.frozen:
raise RuntimeError(
"Cannot add sub application to frozen application")
if subapp.frozen:
raise RuntimeError("Cannot add frozen application")
resource = resource_factory()
self.router.register_resource(resource)
self._reg_subapp_signals(subapp)
self._subapps.append(subapp)
subapp.pre_freeze()
if self._loop is not None:
subapp._set_loop(self._loop)
return resource
def add_domain(self, domain: str,
subapp: 'Application') -> AbstractResource:
if not isinstance(domain, str):
raise TypeError("Domain must be str")
elif '*' in domain:
rule = MaskDomain(domain) # type: Domain
else:
rule = Domain(domain)
factory = partial(MatchedSubAppResource, rule, subapp)
return self._add_subapp(factory, subapp)
def add_routes(self, routes: Iterable[AbstractRouteDef]) -> None:
self.router.add_routes(routes)
@property
def on_response_prepare(self) -> _RespPrepareSignal:
return self._on_response_prepare
@property
def on_startup(self) -> _AppSignal:
return self._on_startup
@property
def on_shutdown(self) -> _AppSignal:
return self._on_shutdown
@property
def on_cleanup(self) -> _AppSignal:
return self._on_cleanup
@property
def cleanup_ctx(self) -> 'CleanupContext':
return self._cleanup_ctx
@property
def router(self) -> UrlDispatcher:
return self._router
@property
def middlewares(self) -> _Middlewares:
return self._middlewares
def _make_handler(self, *,
loop: Optional[asyncio.AbstractEventLoop]=None,
access_log_class: Type[
AbstractAccessLogger]=AccessLogger,
**kwargs: Any) -> Server:
if not issubclass(access_log_class, AbstractAccessLogger):
raise TypeError(
'access_log_class must be subclass of '
'aiohttp.abc.AbstractAccessLogger, got {}'.format(
access_log_class))
self._set_loop(loop)
self.freeze()
kwargs['debug'] = self._debug
kwargs['access_log_class'] = access_log_class
if self._handler_args:
for k, v in self._handler_args.items():
kwargs[k] = v
return Server(self._handle, # type: ignore
request_factory=self._make_request,
loop=self._loop, **kwargs)
def make_handler(self, *,
loop: Optional[asyncio.AbstractEventLoop]=None,
access_log_class: Type[
AbstractAccessLogger]=AccessLogger,
**kwargs: Any) -> Server:
warnings.warn("Application.make_handler(...) is deprecated, "
"use AppRunner API instead",
DeprecationWarning,
stacklevel=2)
return self._make_handler(loop=loop,
access_log_class=access_log_class,
**kwargs)
async def startup(self) -> None:
"""Causes on_startup signal
Should be called in the event loop along with the request handler.
"""
await self.on_startup.send(self)
async def shutdown(self) -> None:
"""Causes on_shutdown signal
Should be called before cleanup()
"""
await self.on_shutdown.send(self)
async def cleanup(self) -> None:
"""Causes on_cleanup signal
Should be called after shutdown()
"""
await self.on_cleanup.send(self)
def _make_request(self, message: RawRequestMessage,
payload: StreamReader,
protocol: RequestHandler,
writer: AbstractStreamWriter,
task: 'asyncio.Task[None]',
_cls: Type[Request]=Request) -> Request:
return _cls(
message, payload, protocol, writer, task,
self._loop,
client_max_size=self._client_max_size)
def _prepare_middleware(self) -> Iterator[Tuple[_Middleware, bool]]:
for m in reversed(self._middlewares):
if getattr(m, '__middleware_version__', None) == 1:
yield m, True
else:
warnings.warn('old-style middleware "{!r}" deprecated, '
'see #2252'.format(m),
DeprecationWarning, stacklevel=2)
yield m, False
yield _fix_request_current_app(self), True
async def _handle(self, request: Request) -> StreamResponse:
loop = asyncio.get_event_loop()
debug = loop.get_debug()
match_info = await self._router.resolve(request)
if debug: # pragma: no cover
if not isinstance(match_info, AbstractMatchInfo):
raise TypeError("match_info should be AbstractMatchInfo "
"instance, not {!r}".format(match_info))
match_info.add_app(self)
match_info.freeze()
resp = None
request._match_info = match_info # type: ignore
expect = request.headers.get(hdrs.EXPECT)
if expect:
resp = await match_info.expect_handler(request)
await request.writer.drain()
if resp is None:
handler = match_info.handler
if self._run_middlewares:
for app in match_info.apps[::-1]:
for m, new_style in app._middlewares_handlers: # type: ignore # noqa
if new_style:
handler = partial(m, handler=handler)
else:
handler = await m(app, handler) # type: ignore
resp = await handler(request)
return resp
def __call__(self) -> 'Application':
"""gunicorn compatibility"""
return self
def __repr__(self) -> str:
return "<Application 0x{:x}>".format(id(self))
def __bool__(self) -> bool:
return True
class CleanupError(RuntimeError):
@property
def exceptions(self) -> List[BaseException]:
return self.args[1]
if TYPE_CHECKING: # pragma: no cover
_CleanupContextBase = FrozenList[Callable[[Application],
AsyncIterator[None]]]
else:
_CleanupContextBase = FrozenList
class CleanupContext(_CleanupContextBase):
def __init__(self) -> None:
super().__init__()
self._exits = [] # type: List[AsyncIterator[None]]
async def _on_startup(self, app: Application) -> None:
for cb in self:
it = cb(app).__aiter__()
await it.__anext__()
self._exits.append(it)
async def _on_cleanup(self, app: Application) -> None:
errors = []
for it in reversed(self._exits):
try:
await it.__anext__()
except StopAsyncIteration:
pass
except Exception as exc:
errors.append(exc)
else:
errors.append(RuntimeError("{!r} has more than one 'yield'"
.format(it)))
if errors:
if len(errors) == 1:
raise errors[0]
else:
raise CleanupError("Multiple errors on cleanup stage", errors)

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import warnings
from typing import Any, Dict, Iterable, List, Optional, Set # noqa
from yarl import URL
from .typedefs import LooseHeaders, StrOrURL
from .web_response import Response
__all__ = (
'HTTPException',
'HTTPError',
'HTTPRedirection',
'HTTPSuccessful',
'HTTPOk',
'HTTPCreated',
'HTTPAccepted',
'HTTPNonAuthoritativeInformation',
'HTTPNoContent',
'HTTPResetContent',
'HTTPPartialContent',
'HTTPMultipleChoices',
'HTTPMovedPermanently',
'HTTPFound',
'HTTPSeeOther',
'HTTPNotModified',
'HTTPUseProxy',
'HTTPTemporaryRedirect',
'HTTPPermanentRedirect',
'HTTPClientError',
'HTTPBadRequest',
'HTTPUnauthorized',
'HTTPPaymentRequired',
'HTTPForbidden',
'HTTPNotFound',
'HTTPMethodNotAllowed',
'HTTPNotAcceptable',
'HTTPProxyAuthenticationRequired',
'HTTPRequestTimeout',
'HTTPConflict',
'HTTPGone',
'HTTPLengthRequired',
'HTTPPreconditionFailed',
'HTTPRequestEntityTooLarge',
'HTTPRequestURITooLong',
'HTTPUnsupportedMediaType',
'HTTPRequestRangeNotSatisfiable',
'HTTPExpectationFailed',
'HTTPMisdirectedRequest',
'HTTPUnprocessableEntity',
'HTTPFailedDependency',
'HTTPUpgradeRequired',
'HTTPPreconditionRequired',
'HTTPTooManyRequests',
'HTTPRequestHeaderFieldsTooLarge',
'HTTPUnavailableForLegalReasons',
'HTTPServerError',
'HTTPInternalServerError',
'HTTPNotImplemented',
'HTTPBadGateway',
'HTTPServiceUnavailable',
'HTTPGatewayTimeout',
'HTTPVersionNotSupported',
'HTTPVariantAlsoNegotiates',
'HTTPInsufficientStorage',
'HTTPNotExtended',
'HTTPNetworkAuthenticationRequired',
)
############################################################
# HTTP Exceptions
############################################################
class HTTPException(Response, Exception):
# You should set in subclasses:
# status = 200
status_code = -1
empty_body = False
__http_exception__ = True
def __init__(self, *,
headers: Optional[LooseHeaders]=None,
reason: Optional[str]=None,
body: Any=None,
text: Optional[str]=None,
content_type: Optional[str]=None) -> None:
if body is not None:
warnings.warn(
"body argument is deprecated for http web exceptions",
DeprecationWarning)
Response.__init__(self, status=self.status_code,
headers=headers, reason=reason,
body=body, text=text, content_type=content_type)
Exception.__init__(self, self.reason)
if self.body is None and not self.empty_body:
self.text = "{}: {}".format(self.status, self.reason)
def __bool__(self) -> bool:
return True
class HTTPError(HTTPException):
"""Base class for exceptions with status codes in the 400s and 500s."""
class HTTPRedirection(HTTPException):
"""Base class for exceptions with status codes in the 300s."""
class HTTPSuccessful(HTTPException):
"""Base class for exceptions with status codes in the 200s."""
class HTTPOk(HTTPSuccessful):
status_code = 200
class HTTPCreated(HTTPSuccessful):
status_code = 201
class HTTPAccepted(HTTPSuccessful):
status_code = 202
class HTTPNonAuthoritativeInformation(HTTPSuccessful):
status_code = 203
class HTTPNoContent(HTTPSuccessful):
status_code = 204
empty_body = True
class HTTPResetContent(HTTPSuccessful):
status_code = 205
empty_body = True
class HTTPPartialContent(HTTPSuccessful):
status_code = 206
############################################################
# 3xx redirection
############################################################
class _HTTPMove(HTTPRedirection):
def __init__(self,
location: StrOrURL,
*,
headers: Optional[LooseHeaders]=None,
reason: Optional[str]=None,
body: Any=None,
text: Optional[str]=None,
content_type: Optional[str]=None) -> None:
if not location:
raise ValueError("HTTP redirects need a location to redirect to.")
super().__init__(headers=headers, reason=reason,
body=body, text=text, content_type=content_type)
self.headers['Location'] = str(URL(location))
self.location = location
class HTTPMultipleChoices(_HTTPMove):
status_code = 300
class HTTPMovedPermanently(_HTTPMove):
status_code = 301
class HTTPFound(_HTTPMove):
status_code = 302
# This one is safe after a POST (the redirected location will be
# retrieved with GET):
class HTTPSeeOther(_HTTPMove):
status_code = 303
class HTTPNotModified(HTTPRedirection):
# FIXME: this should include a date or etag header
status_code = 304
empty_body = True
class HTTPUseProxy(_HTTPMove):
# Not a move, but looks a little like one
status_code = 305
class HTTPTemporaryRedirect(_HTTPMove):
status_code = 307
class HTTPPermanentRedirect(_HTTPMove):
status_code = 308
############################################################
# 4xx client error
############################################################
class HTTPClientError(HTTPError):
pass
class HTTPBadRequest(HTTPClientError):
status_code = 400
class HTTPUnauthorized(HTTPClientError):
status_code = 401
class HTTPPaymentRequired(HTTPClientError):
status_code = 402
class HTTPForbidden(HTTPClientError):
status_code = 403
class HTTPNotFound(HTTPClientError):
status_code = 404
class HTTPMethodNotAllowed(HTTPClientError):
status_code = 405
def __init__(self,
method: str,
allowed_methods: Iterable[str],
*,
headers: Optional[LooseHeaders]=None,
reason: Optional[str]=None,
body: Any=None,
text: Optional[str]=None,
content_type: Optional[str]=None) -> None:
allow = ','.join(sorted(allowed_methods))
super().__init__(headers=headers, reason=reason,
body=body, text=text, content_type=content_type)
self.headers['Allow'] = allow
self.allowed_methods = set(allowed_methods) # type: Set[str]
self.method = method.upper()
class HTTPNotAcceptable(HTTPClientError):
status_code = 406
class HTTPProxyAuthenticationRequired(HTTPClientError):
status_code = 407
class HTTPRequestTimeout(HTTPClientError):
status_code = 408
class HTTPConflict(HTTPClientError):
status_code = 409
class HTTPGone(HTTPClientError):
status_code = 410
class HTTPLengthRequired(HTTPClientError):
status_code = 411
class HTTPPreconditionFailed(HTTPClientError):
status_code = 412
class HTTPRequestEntityTooLarge(HTTPClientError):
status_code = 413
def __init__(self,
max_size: float,
actual_size: float,
**kwargs: Any) -> None:
kwargs.setdefault(
'text',
'Maximum request body size {} exceeded, '
'actual body size {}'.format(max_size, actual_size)
)
super().__init__(**kwargs)
class HTTPRequestURITooLong(HTTPClientError):
status_code = 414
class HTTPUnsupportedMediaType(HTTPClientError):
status_code = 415
class HTTPRequestRangeNotSatisfiable(HTTPClientError):
status_code = 416
class HTTPExpectationFailed(HTTPClientError):
status_code = 417
class HTTPMisdirectedRequest(HTTPClientError):
status_code = 421
class HTTPUnprocessableEntity(HTTPClientError):
status_code = 422
class HTTPFailedDependency(HTTPClientError):
status_code = 424
class HTTPUpgradeRequired(HTTPClientError):
status_code = 426
class HTTPPreconditionRequired(HTTPClientError):
status_code = 428
class HTTPTooManyRequests(HTTPClientError):
status_code = 429
class HTTPRequestHeaderFieldsTooLarge(HTTPClientError):
status_code = 431
class HTTPUnavailableForLegalReasons(HTTPClientError):
status_code = 451
def __init__(self,
link: str,
*,
headers: Optional[LooseHeaders]=None,
reason: Optional[str]=None,
body: Any=None,
text: Optional[str]=None,
content_type: Optional[str]=None) -> None:
super().__init__(headers=headers, reason=reason,
body=body, text=text, content_type=content_type)
self.headers['Link'] = '<%s>; rel="blocked-by"' % link
self.link = link
############################################################
# 5xx Server Error
############################################################
# Response status codes beginning with the digit "5" indicate cases in
# which the server is aware that it has erred or is incapable of
# performing the request. Except when responding to a HEAD request, the
# server SHOULD include an entity containing an explanation of the error
# situation, and whether it is a temporary or permanent condition. User
# agents SHOULD display any included entity to the user. These response
# codes are applicable to any request method.
class HTTPServerError(HTTPError):
pass
class HTTPInternalServerError(HTTPServerError):
status_code = 500
class HTTPNotImplemented(HTTPServerError):
status_code = 501
class HTTPBadGateway(HTTPServerError):
status_code = 502
class HTTPServiceUnavailable(HTTPServerError):
status_code = 503
class HTTPGatewayTimeout(HTTPServerError):
status_code = 504
class HTTPVersionNotSupported(HTTPServerError):
status_code = 505
class HTTPVariantAlsoNegotiates(HTTPServerError):
status_code = 506
class HTTPInsufficientStorage(HTTPServerError):
status_code = 507
class HTTPNotExtended(HTTPServerError):
status_code = 510
class HTTPNetworkAuthenticationRequired(HTTPServerError):
status_code = 511

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import asyncio
import mimetypes
import os
import pathlib
from functools import partial
from typing import ( # noqa
IO,
TYPE_CHECKING,
Any,
Awaitable,
Callable,
List,
Optional,
Union,
cast,
)
from . import hdrs
from .abc import AbstractStreamWriter
from .base_protocol import BaseProtocol
from .helpers import set_exception, set_result
from .http_writer import StreamWriter
from .log import server_logger
from .typedefs import LooseHeaders
from .web_exceptions import (
HTTPNotModified,
HTTPPartialContent,
HTTPPreconditionFailed,
HTTPRequestRangeNotSatisfiable,
)
from .web_response import StreamResponse
__all__ = ('FileResponse',)
if TYPE_CHECKING: # pragma: no cover
from .web_request import BaseRequest # noqa
_T_OnChunkSent = Optional[Callable[[bytes], Awaitable[None]]]
NOSENDFILE = bool(os.environ.get("AIOHTTP_NOSENDFILE"))
class SendfileStreamWriter(StreamWriter):
def __init__(self,
protocol: BaseProtocol,
loop: asyncio.AbstractEventLoop,
fobj: IO[Any],
count: int,
on_chunk_sent: _T_OnChunkSent=None) -> None:
super().__init__(protocol, loop, on_chunk_sent)
self._sendfile_buffer = [] # type: List[bytes]
self._fobj = fobj
self._count = count
self._offset = fobj.tell()
self._in_fd = fobj.fileno()
def _write(self, chunk: bytes) -> None:
# we overwrite StreamWriter._write, so nothing can be appended to
# _buffer, and nothing is written to the transport directly by the
# parent class
self.output_size += len(chunk)
self._sendfile_buffer.append(chunk)
def _sendfile_cb(self, fut: 'asyncio.Future[None]', out_fd: int) -> None:
if fut.cancelled():
return
try:
if self._do_sendfile(out_fd):
set_result(fut, None)
except Exception as exc:
set_exception(fut, exc)
def _do_sendfile(self, out_fd: int) -> bool:
try:
n = os.sendfile(out_fd,
self._in_fd,
self._offset,
self._count)
if n == 0: # in_fd EOF reached
n = self._count
except (BlockingIOError, InterruptedError):
n = 0
self.output_size += n
self._offset += n
self._count -= n
assert self._count >= 0
return self._count == 0
def _done_fut(self, out_fd: int, fut: 'asyncio.Future[None]') -> None:
self.loop.remove_writer(out_fd)
async def sendfile(self) -> None:
assert self.transport is not None
out_socket = self.transport.get_extra_info('socket').dup()
out_socket.setblocking(False)
out_fd = out_socket.fileno()
loop = self.loop
data = b''.join(self._sendfile_buffer)
try:
await loop.sock_sendall(out_socket, data)
if not self._do_sendfile(out_fd):
fut = loop.create_future()
fut.add_done_callback(partial(self._done_fut, out_fd))
loop.add_writer(out_fd, self._sendfile_cb, fut, out_fd)
await fut
except asyncio.CancelledError:
raise
except Exception:
server_logger.debug('Socket error')
self.transport.close()
finally:
out_socket.close()
await super().write_eof()
async def write_eof(self, chunk: bytes=b'') -> None:
pass
class FileResponse(StreamResponse):
"""A response object can be used to send files."""
def __init__(self, path: Union[str, pathlib.Path],
chunk_size: int=256*1024,
status: int=200,
reason: Optional[str]=None,
headers: Optional[LooseHeaders]=None) -> None:
super().__init__(status=status, reason=reason, headers=headers)
if isinstance(path, str):
path = pathlib.Path(path)
self._path = path
self._chunk_size = chunk_size
async def _sendfile_system(self, request: 'BaseRequest',
fobj: IO[Any],
count: int) -> AbstractStreamWriter:
# Write count bytes of fobj to resp using
# the os.sendfile system call.
#
# For details check
# https://github.com/KeepSafe/aiohttp/issues/1177
# See https://github.com/KeepSafe/aiohttp/issues/958 for details
#
# request should be an aiohttp.web.Request instance.
# fobj should be an open file object.
# count should be an integer > 0.
transport = request.transport
assert transport is not None
if (transport.get_extra_info("sslcontext") or
transport.get_extra_info("socket") is None or
self.compression):
writer = await self._sendfile_fallback(request, fobj, count)
else:
writer = SendfileStreamWriter(
request.protocol,
request._loop,
fobj,
count
)
request._payload_writer = writer
await super().prepare(request)
await writer.sendfile()
return writer
async def _sendfile_fallback(self, request: 'BaseRequest',
fobj: IO[Any],
count: int) -> AbstractStreamWriter:
# Mimic the _sendfile_system() method, but without using the
# os.sendfile() system call. This should be used on systems
# that don't support the os.sendfile().
# To keep memory usage low,fobj is transferred in chunks
# controlled by the constructor's chunk_size argument.
writer = await super().prepare(request)
assert writer is not None
chunk_size = self._chunk_size
loop = asyncio.get_event_loop()
chunk = await loop.run_in_executor(None, fobj.read, chunk_size)
while chunk:
await writer.write(chunk)
count = count - chunk_size
if count <= 0:
break
chunk = await loop.run_in_executor(
None, fobj.read, min(chunk_size, count)
)
await writer.drain()
return writer
if hasattr(os, "sendfile") and not NOSENDFILE: # pragma: no cover
_sendfile = _sendfile_system
else: # pragma: no cover
_sendfile = _sendfile_fallback
async def prepare(
self,
request: 'BaseRequest'
) -> Optional[AbstractStreamWriter]:
filepath = self._path
gzip = False
if 'gzip' in request.headers.get(hdrs.ACCEPT_ENCODING, ''):
gzip_path = filepath.with_name(filepath.name + '.gz')
if gzip_path.is_file():
filepath = gzip_path
gzip = True
loop = asyncio.get_event_loop()
st = await loop.run_in_executor(None, filepath.stat)
modsince = request.if_modified_since
if modsince is not None and st.st_mtime <= modsince.timestamp():
self.set_status(HTTPNotModified.status_code)
self._length_check = False
# Delete any Content-Length headers provided by user. HTTP 304
# should always have empty response body
return await super().prepare(request)
unmodsince = request.if_unmodified_since
if unmodsince is not None and st.st_mtime > unmodsince.timestamp():
self.set_status(HTTPPreconditionFailed.status_code)
return await super().prepare(request)
if hdrs.CONTENT_TYPE not in self.headers:
ct, encoding = mimetypes.guess_type(str(filepath))
if not ct:
ct = 'application/octet-stream'
should_set_ct = True
else:
encoding = 'gzip' if gzip else None
should_set_ct = False
status = self._status
file_size = st.st_size
count = file_size
start = None
ifrange = request.if_range
if ifrange is None or st.st_mtime <= ifrange.timestamp():
# If-Range header check:
# condition = cached date >= last modification date
# return 206 if True else 200.
# if False:
# Range header would not be processed, return 200
# if True but Range header missing
# return 200
try:
rng = request.http_range
start = rng.start
end = rng.stop
except ValueError:
# https://tools.ietf.org/html/rfc7233:
# A server generating a 416 (Range Not Satisfiable) response to
# a byte-range request SHOULD send a Content-Range header field
# with an unsatisfied-range value.
# The complete-length in a 416 response indicates the current
# length of the selected representation.
#
# Will do the same below. Many servers ignore this and do not
# send a Content-Range header with HTTP 416
self.headers[hdrs.CONTENT_RANGE] = 'bytes */{0}'.format(
file_size)
self.set_status(HTTPRequestRangeNotSatisfiable.status_code)
return await super().prepare(request)
# If a range request has been made, convert start, end slice
# notation into file pointer offset and count
if start is not None or end is not None:
if start < 0 and end is None: # return tail of file
start += file_size
if start < 0:
# if Range:bytes=-1000 in request header but file size
# is only 200, there would be trouble without this
start = 0
count = file_size - start
else:
# rfc7233:If the last-byte-pos value is
# absent, or if the value is greater than or equal to
# the current length of the representation data,
# the byte range is interpreted as the remainder
# of the representation (i.e., the server replaces the
# value of last-byte-pos with a value that is one less than
# the current length of the selected representation).
count = min(end if end is not None else file_size,
file_size) - start
if start >= file_size:
# HTTP 416 should be returned in this case.
#
# According to https://tools.ietf.org/html/rfc7233:
# If a valid byte-range-set includes at least one
# byte-range-spec with a first-byte-pos that is less than
# the current length of the representation, or at least one
# suffix-byte-range-spec with a non-zero suffix-length,
# then the byte-range-set is satisfiable. Otherwise, the
# byte-range-set is unsatisfiable.
self.headers[hdrs.CONTENT_RANGE] = 'bytes */{0}'.format(
file_size)
self.set_status(HTTPRequestRangeNotSatisfiable.status_code)
return await super().prepare(request)
status = HTTPPartialContent.status_code
# Even though you are sending the whole file, you should still
# return a HTTP 206 for a Range request.
self.set_status(status)
if should_set_ct:
self.content_type = ct # type: ignore
if encoding:
self.headers[hdrs.CONTENT_ENCODING] = encoding
if gzip:
self.headers[hdrs.VARY] = hdrs.ACCEPT_ENCODING
self.last_modified = st.st_mtime # type: ignore
self.content_length = count
self.headers[hdrs.ACCEPT_RANGES] = 'bytes'
real_start = cast(int, start)
if status == HTTPPartialContent.status_code:
self.headers[hdrs.CONTENT_RANGE] = 'bytes {0}-{1}/{2}'.format(
real_start, real_start + count - 1, file_size)
fobj = await loop.run_in_executor(None, filepath.open, 'rb')
if start: # be aware that start could be None or int=0 here.
await loop.run_in_executor(None, fobj.seek, start)
try:
return await self._sendfile(request, fobj, count)
finally:
await loop.run_in_executor(None, fobj.close)

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import datetime
import functools
import logging
import os
import re
from collections import namedtuple
from typing import Any, Callable, Dict, Iterable, List, Tuple # noqa
from .abc import AbstractAccessLogger
from .web_request import BaseRequest
from .web_response import StreamResponse
KeyMethod = namedtuple('KeyMethod', 'key method')
class AccessLogger(AbstractAccessLogger):
"""Helper object to log access.
Usage:
log = logging.getLogger("spam")
log_format = "%a %{User-Agent}i"
access_logger = AccessLogger(log, log_format)
access_logger.log(request, response, time)
Format:
%% The percent sign
%a Remote IP-address (IP-address of proxy if using reverse proxy)
%t Time when the request was started to process
%P The process ID of the child that serviced the request
%r First line of request
%s Response status code
%b Size of response in bytes, including HTTP headers
%T Time taken to serve the request, in seconds
%Tf Time taken to serve the request, in seconds with floating fraction
in .06f format
%D Time taken to serve the request, in microseconds
%{FOO}i request.headers['FOO']
%{FOO}o response.headers['FOO']
%{FOO}e os.environ['FOO']
"""
LOG_FORMAT_MAP = {
'a': 'remote_address',
't': 'request_start_time',
'P': 'process_id',
'r': 'first_request_line',
's': 'response_status',
'b': 'response_size',
'T': 'request_time',
'Tf': 'request_time_frac',
'D': 'request_time_micro',
'i': 'request_header',
'o': 'response_header',
}
LOG_FORMAT = '%a %t "%r" %s %b "%{Referer}i" "%{User-Agent}i"'
FORMAT_RE = re.compile(r'%(\{([A-Za-z0-9\-_]+)\}([ioe])|[atPrsbOD]|Tf?)')
CLEANUP_RE = re.compile(r'(%[^s])')
_FORMAT_CACHE = {} # type: Dict[str, Tuple[str, List[KeyMethod]]]
def __init__(self, logger: logging.Logger,
log_format: str=LOG_FORMAT) -> None:
"""Initialise the logger.
logger is a logger object to be used for logging.
log_format is a string with apache compatible log format description.
"""
super().__init__(logger, log_format=log_format)
_compiled_format = AccessLogger._FORMAT_CACHE.get(log_format)
if not _compiled_format:
_compiled_format = self.compile_format(log_format)
AccessLogger._FORMAT_CACHE[log_format] = _compiled_format
self._log_format, self._methods = _compiled_format
def compile_format(self, log_format: str) -> Tuple[str, List[KeyMethod]]:
"""Translate log_format into form usable by modulo formatting
All known atoms will be replaced with %s
Also methods for formatting of those atoms will be added to
_methods in appropriate order
For example we have log_format = "%a %t"
This format will be translated to "%s %s"
Also contents of _methods will be
[self._format_a, self._format_t]
These method will be called and results will be passed
to translated string format.
Each _format_* method receive 'args' which is list of arguments
given to self.log
Exceptions are _format_e, _format_i and _format_o methods which
also receive key name (by functools.partial)
"""
# list of (key, method) tuples, we don't use an OrderedDict as users
# can repeat the same key more than once
methods = list()
for atom in self.FORMAT_RE.findall(log_format):
if atom[1] == '':
format_key1 = self.LOG_FORMAT_MAP[atom[0]]
m = getattr(AccessLogger, '_format_%s' % atom[0])
key_method = KeyMethod(format_key1, m)
else:
format_key2 = (self.LOG_FORMAT_MAP[atom[2]], atom[1])
m = getattr(AccessLogger, '_format_%s' % atom[2])
key_method = KeyMethod(format_key2,
functools.partial(m, atom[1]))
methods.append(key_method)
log_format = self.FORMAT_RE.sub(r'%s', log_format)
log_format = self.CLEANUP_RE.sub(r'%\1', log_format)
return log_format, methods
@staticmethod
def _format_i(key: str,
request: BaseRequest,
response: StreamResponse,
time: float) -> str:
if request is None:
return '(no headers)'
# suboptimal, make istr(key) once
return request.headers.get(key, '-')
@staticmethod
def _format_o(key: str,
request: BaseRequest,
response: StreamResponse,
time: float) -> str:
# suboptimal, make istr(key) once
return response.headers.get(key, '-')
@staticmethod
def _format_a(request: BaseRequest,
response: StreamResponse,
time: float) -> str:
if request is None:
return '-'
ip = request.remote
return ip if ip is not None else '-'
@staticmethod
def _format_t(request: BaseRequest,
response: StreamResponse,
time: float) -> str:
now = datetime.datetime.utcnow()
start_time = now - datetime.timedelta(seconds=time)
return start_time.strftime('[%d/%b/%Y:%H:%M:%S +0000]')
@staticmethod
def _format_P(request: BaseRequest,
response: StreamResponse,
time: float) -> str:
return "<%s>" % os.getpid()
@staticmethod
def _format_r(request: BaseRequest,
response: StreamResponse,
time: float) -> str:
if request is None:
return '-'
return '%s %s HTTP/%s.%s' % (request.method, request.path_qs,
request.version.major,
request.version.minor)
@staticmethod
def _format_s(request: BaseRequest,
response: StreamResponse,
time: float) -> int:
return response.status
@staticmethod
def _format_b(request: BaseRequest,
response: StreamResponse,
time: float) -> int:
return response.body_length
@staticmethod
def _format_T(request: BaseRequest,
response: StreamResponse,
time: float) -> str:
return str(round(time))
@staticmethod
def _format_Tf(request: BaseRequest,
response: StreamResponse,
time: float) -> str:
return '%06f' % time
@staticmethod
def _format_D(request: BaseRequest,
response: StreamResponse,
time: float) -> str:
return str(round(time * 1000000))
def _format_line(self,
request: BaseRequest,
response: StreamResponse,
time: float) -> Iterable[Tuple[str,
Callable[[BaseRequest,
StreamResponse,
float],
str]]]:
return [(key, method(request, response, time))
for key, method in self._methods]
def log(self,
request: BaseRequest,
response: StreamResponse,
time: float) -> None:
try:
fmt_info = self._format_line(request, response, time)
values = list()
extra = dict()
for key, value in fmt_info:
values.append(value)
if key.__class__ is str:
extra[key] = value
else:
k1, k2 = key
dct = extra.get(k1, {}) # type: Any
dct[k2] = value
extra[k1] = dct
self.logger.info(self._log_format % tuple(values), extra=extra)
except Exception:
self.logger.exception("Error in logging")

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import re
from typing import TYPE_CHECKING, Awaitable, Callable, Tuple, Type, TypeVar
from .web_exceptions import HTTPPermanentRedirect, _HTTPMove
from .web_request import Request
from .web_response import StreamResponse
from .web_urldispatcher import SystemRoute
__all__ = (
'middleware',
'normalize_path_middleware',
)
if TYPE_CHECKING: # pragma: no cover
from .web_app import Application # noqa
_Func = TypeVar('_Func')
async def _check_request_resolves(request: Request,
path: str) -> Tuple[bool, Request]:
alt_request = request.clone(rel_url=path)
match_info = await request.app.router.resolve(alt_request)
alt_request._match_info = match_info # type: ignore
if match_info.http_exception is None:
return True, alt_request
return False, request
def middleware(f: _Func) -> _Func:
f.__middleware_version__ = 1 # type: ignore
return f
_Handler = Callable[[Request], Awaitable[StreamResponse]]
_Middleware = Callable[[Request, _Handler], Awaitable[StreamResponse]]
def normalize_path_middleware(
*, append_slash: bool=True, remove_slash: bool=False,
merge_slashes: bool=True,
redirect_class: Type[_HTTPMove]=HTTPPermanentRedirect) -> _Middleware:
"""
Middleware factory which produces a middleware that normalizes
the path of a request. By normalizing it means:
- Add or remove a trailing slash to the path.
- Double slashes are replaced by one.
The middleware returns as soon as it finds a path that resolves
correctly. The order if both merge and append/remove are enabled is
1) merge slashes
2) append/remove slash
3) both merge slashes and append/remove slash.
If the path resolves with at least one of those conditions, it will
redirect to the new path.
Only one of `append_slash` and `remove_slash` can be enabled. If both
are `True` the factory will raise an assertion error
If `append_slash` is `True` the middleware will append a slash when
needed. If a resource is defined with trailing slash and the request
comes without it, it will append it automatically.
If `remove_slash` is `True`, `append_slash` must be `False`. When enabled
the middleware will remove trailing slashes and redirect if the resource
is defined
If merge_slashes is True, merge multiple consecutive slashes in the
path into one.
"""
correct_configuration = not (append_slash and remove_slash)
assert correct_configuration, "Cannot both remove and append slash"
@middleware
async def impl(request: Request, handler: _Handler) -> StreamResponse:
if isinstance(request.match_info.route, SystemRoute):
paths_to_check = []
if '?' in request.raw_path:
path, query = request.raw_path.split('?', 1)
query = '?' + query
else:
query = ''
path = request.raw_path
if merge_slashes:
paths_to_check.append(re.sub('//+', '/', path))
if append_slash and not request.path.endswith('/'):
paths_to_check.append(path + '/')
if remove_slash and request.path.endswith('/'):
paths_to_check.append(path[:-1])
if merge_slashes and append_slash:
paths_to_check.append(
re.sub('//+', '/', path + '/'))
if merge_slashes and remove_slash:
merged_slashes = re.sub('//+', '/', path)
paths_to_check.append(merged_slashes[:-1])
for path in paths_to_check:
resolves, request = await _check_request_resolves(
request, path)
if resolves:
raise redirect_class(request.raw_path + query)
return await handler(request)
return impl
def _fix_request_current_app(app: 'Application') -> _Middleware:
@middleware
async def impl(request: Request, handler: _Handler) -> StreamResponse:
with request.match_info.set_current_app(app):
return await handler(request)
return impl

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import asyncio
import asyncio.streams
import traceback
import warnings
from collections import deque
from contextlib import suppress
from html import escape as html_escape
from http import HTTPStatus
from logging import Logger
from typing import (
TYPE_CHECKING,
Any,
Awaitable,
Callable,
Optional,
Type,
cast,
)
import yarl
from .abc import AbstractAccessLogger, AbstractStreamWriter
from .base_protocol import BaseProtocol
from .helpers import CeilTimeout, current_task
from .http import (
HttpProcessingError,
HttpRequestParser,
HttpVersion10,
RawRequestMessage,
StreamWriter,
)
from .log import access_logger, server_logger
from .streams import EMPTY_PAYLOAD, StreamReader
from .tcp_helpers import tcp_keepalive
from .web_exceptions import HTTPException
from .web_log import AccessLogger
from .web_request import BaseRequest
from .web_response import Response, StreamResponse
__all__ = ('RequestHandler', 'RequestPayloadError', 'PayloadAccessError')
if TYPE_CHECKING: # pragma: no cover
from .web_server import Server # noqa
_RequestFactory = Callable[[RawRequestMessage,
StreamReader,
'RequestHandler',
AbstractStreamWriter,
'asyncio.Task[None]'],
BaseRequest]
_RequestHandler = Callable[[BaseRequest], Awaitable[StreamResponse]]
ERROR = RawRequestMessage(
'UNKNOWN', '/', HttpVersion10, {},
{}, True, False, False, False, yarl.URL('/'))
class RequestPayloadError(Exception):
"""Payload parsing error."""
class PayloadAccessError(Exception):
"""Payload was accessed after response was sent."""
class RequestHandler(BaseProtocol):
"""HTTP protocol implementation.
RequestHandler handles incoming HTTP request. It reads request line,
request headers and request payload and calls handle_request() method.
By default it always returns with 404 response.
RequestHandler handles errors in incoming request, like bad
status line, bad headers or incomplete payload. If any error occurs,
connection gets closed.
:param keepalive_timeout: number of seconds before closing
keep-alive connection
:type keepalive_timeout: int or None
:param bool tcp_keepalive: TCP keep-alive is on, default is on
:param bool debug: enable debug mode
:param logger: custom logger object
:type logger: aiohttp.log.server_logger
:param access_log_class: custom class for access_logger
:type access_log_class: aiohttp.abc.AbstractAccessLogger
:param access_log: custom logging object
:type access_log: aiohttp.log.server_logger
:param str access_log_format: access log format string
:param loop: Optional event loop
:param int max_line_size: Optional maximum header line size
:param int max_field_size: Optional maximum header field size
:param int max_headers: Optional maximum header size
"""
KEEPALIVE_RESCHEDULE_DELAY = 1
__slots__ = ('_request_count', '_keepalive', '_manager',
'_request_handler', '_request_factory', '_tcp_keepalive',
'_keepalive_time', '_keepalive_handle', '_keepalive_timeout',
'_lingering_time', '_messages', '_message_tail',
'_waiter', '_error_handler', '_task_handler',
'_upgrade', '_payload_parser', '_request_parser',
'_reading_paused', 'logger', 'debug', 'access_log',
'access_logger', '_close', '_force_close')
def __init__(self, manager: 'Server', *,
loop: asyncio.AbstractEventLoop,
keepalive_timeout: float=75., # NGINX default is 75 secs
tcp_keepalive: bool=True,
logger: Logger=server_logger,
access_log_class: Type[AbstractAccessLogger]=AccessLogger,
access_log: Logger=access_logger,
access_log_format: str=AccessLogger.LOG_FORMAT,
debug: bool=False,
max_line_size: int=8190,
max_headers: int=32768,
max_field_size: int=8190,
lingering_time: float=10.0):
super().__init__(loop)
self._request_count = 0
self._keepalive = False
self._manager = manager # type: Optional[Server]
self._request_handler = manager.request_handler # type: Optional[_RequestHandler] # noqa
self._request_factory = manager.request_factory # type: Optional[_RequestFactory] # noqa
self._tcp_keepalive = tcp_keepalive
# placeholder to be replaced on keepalive timeout setup
self._keepalive_time = 0.0
self._keepalive_handle = None # type: Optional[asyncio.Handle]
self._keepalive_timeout = keepalive_timeout
self._lingering_time = float(lingering_time)
self._messages = deque() # type: Any # Python 3.5 has no typing.Deque
self._message_tail = b''
self._waiter = None # type: Optional[asyncio.Future[None]]
self._error_handler = None # type: Optional[asyncio.Task[None]]
self._task_handler = None # type: Optional[asyncio.Task[None]]
self._upgrade = False
self._payload_parser = None # type: Any
self._request_parser = HttpRequestParser(
self, loop,
max_line_size=max_line_size,
max_field_size=max_field_size,
max_headers=max_headers,
payload_exception=RequestPayloadError) # type: Optional[HttpRequestParser] # noqa
self.logger = logger
self.debug = debug
self.access_log = access_log
if access_log:
self.access_logger = access_log_class(
access_log, access_log_format) # type: Optional[AbstractAccessLogger] # noqa
else:
self.access_logger = None
self._close = False
self._force_close = False
def __repr__(self) -> str:
return "<{} {}>".format(
self.__class__.__name__,
'connected' if self.transport is not None else 'disconnected')
@property
def keepalive_timeout(self) -> float:
return self._keepalive_timeout
async def shutdown(self, timeout: Optional[float]=15.0) -> None:
"""Worker process is about to exit, we need cleanup everything and
stop accepting requests. It is especially important for keep-alive
connections."""
self._force_close = True
if self._keepalive_handle is not None:
self._keepalive_handle.cancel()
if self._waiter:
self._waiter.cancel()
# wait for handlers
with suppress(asyncio.CancelledError, asyncio.TimeoutError):
with CeilTimeout(timeout, loop=self._loop):
if (self._error_handler is not None and
not self._error_handler.done()):
await self._error_handler
if (self._task_handler is not None and
not self._task_handler.done()):
await self._task_handler
# force-close non-idle handler
if self._task_handler is not None:
self._task_handler.cancel()
if self.transport is not None:
self.transport.close()
self.transport = None
def connection_made(self, transport: asyncio.BaseTransport) -> None:
super().connection_made(transport)
real_transport = cast(asyncio.Transport, transport)
if self._tcp_keepalive:
tcp_keepalive(real_transport)
self._task_handler = self._loop.create_task(self.start())
assert self._manager is not None
self._manager.connection_made(self, real_transport)
def connection_lost(self, exc: Optional[BaseException]) -> None:
if self._manager is None:
return
self._manager.connection_lost(self, exc)
super().connection_lost(exc)
self._manager = None
self._force_close = True
self._request_factory = None
self._request_handler = None
self._request_parser = None
if self._keepalive_handle is not None:
self._keepalive_handle.cancel()
if self._task_handler is not None:
self._task_handler.cancel()
if self._error_handler is not None:
self._error_handler.cancel()
self._task_handler = None
if self._payload_parser is not None:
self._payload_parser.feed_eof()
self._payload_parser = None
def set_parser(self, parser: Any) -> None:
# Actual type is WebReader
assert self._payload_parser is None
self._payload_parser = parser
if self._message_tail:
self._payload_parser.feed_data(self._message_tail)
self._message_tail = b''
def eof_received(self) -> None:
pass
def data_received(self, data: bytes) -> None:
if self._force_close or self._close:
return
# parse http messages
if self._payload_parser is None and not self._upgrade:
assert self._request_parser is not None
try:
messages, upgraded, tail = self._request_parser.feed_data(data)
except HttpProcessingError as exc:
# something happened during parsing
self._error_handler = self._loop.create_task(
self.handle_parse_error(
StreamWriter(self, self._loop),
400, exc, exc.message))
self.close()
except Exception as exc:
# 500: internal error
self._error_handler = self._loop.create_task(
self.handle_parse_error(
StreamWriter(self, self._loop),
500, exc))
self.close()
else:
if messages:
# sometimes the parser returns no messages
for (msg, payload) in messages:
self._request_count += 1
self._messages.append((msg, payload))
waiter = self._waiter
if waiter is not None:
if not waiter.done():
# don't set result twice
waiter.set_result(None)
self._upgrade = upgraded
if upgraded and tail:
self._message_tail = tail
# no parser, just store
elif self._payload_parser is None and self._upgrade and data:
self._message_tail += data
# feed payload
elif data:
eof, tail = self._payload_parser.feed_data(data)
if eof:
self.close()
def keep_alive(self, val: bool) -> None:
"""Set keep-alive connection mode.
:param bool val: new state.
"""
self._keepalive = val
if self._keepalive_handle:
self._keepalive_handle.cancel()
self._keepalive_handle = None
def close(self) -> None:
"""Stop accepting new pipelinig messages and close
connection when handlers done processing messages"""
self._close = True
if self._waiter:
self._waiter.cancel()
def force_close(self) -> None:
"""Force close connection"""
self._force_close = True
if self._waiter:
self._waiter.cancel()
if self.transport is not None:
self.transport.close()
self.transport = None
def log_access(self,
request: BaseRequest,
response: StreamResponse,
time: float) -> None:
if self.access_logger is not None:
self.access_logger.log(request, response, time)
def log_debug(self, *args: Any, **kw: Any) -> None:
if self.debug:
self.logger.debug(*args, **kw)
def log_exception(self, *args: Any, **kw: Any) -> None:
self.logger.exception(*args, **kw)
def _process_keepalive(self) -> None:
if self._force_close or not self._keepalive:
return
next = self._keepalive_time + self._keepalive_timeout
# handler in idle state
if self._waiter:
if self._loop.time() > next:
self.force_close()
return
# not all request handlers are done,
# reschedule itself to next second
self._keepalive_handle = self._loop.call_later(
self.KEEPALIVE_RESCHEDULE_DELAY, self._process_keepalive)
async def start(self) -> None:
"""Process incoming request.
It reads request line, request headers and request payload, then
calls handle_request() method. Subclass has to override
handle_request(). start() handles various exceptions in request
or response handling. Connection is being closed always unless
keep_alive(True) specified.
"""
loop = self._loop
handler = self._task_handler
assert handler is not None
manager = self._manager
assert manager is not None
keepalive_timeout = self._keepalive_timeout
resp = None
assert self._request_factory is not None
assert self._request_handler is not None
while not self._force_close:
if not self._messages:
try:
# wait for next request
self._waiter = loop.create_future()
await self._waiter
except asyncio.CancelledError:
break
finally:
self._waiter = None
message, payload = self._messages.popleft()
if self.access_log:
now = loop.time()
manager.requests_count += 1
writer = StreamWriter(self, loop)
request = self._request_factory(
message, payload, self, writer, handler)
try:
# a new task is used for copy context vars (#3406)
task = self._loop.create_task(
self._request_handler(request))
try:
resp = await task
except HTTPException as exc:
resp = exc
except (asyncio.CancelledError, ConnectionError):
self.log_debug('Ignored premature client disconnection')
break
except asyncio.TimeoutError as exc:
self.log_debug('Request handler timed out.', exc_info=exc)
resp = self.handle_error(request, 504)
except Exception as exc:
resp = self.handle_error(request, 500, exc)
else:
# Deprecation warning (See #2415)
if getattr(resp, '__http_exception__', False):
warnings.warn(
"returning HTTPException object is deprecated "
"(#2415) and will be removed, "
"please raise the exception instead",
DeprecationWarning)
# Drop the processed task from asyncio.Task.all_tasks() early
del task
if self.debug:
if not isinstance(resp, StreamResponse):
if resp is None:
raise RuntimeError("Missing return "
"statement on request handler")
else:
raise RuntimeError("Web-handler should return "
"a response instance, "
"got {!r}".format(resp))
try:
prepare_meth = resp.prepare
except AttributeError:
if resp is None:
raise RuntimeError("Missing return "
"statement on request handler")
else:
raise RuntimeError("Web-handler should return "
"a response instance, "
"got {!r}".format(resp))
try:
await prepare_meth(request)
await resp.write_eof()
except ConnectionError:
self.log_debug('Ignored premature client disconnection 2')
break
# notify server about keep-alive
self._keepalive = bool(resp.keep_alive)
# log access
if self.access_log:
self.log_access(request, resp, loop.time() - now)
# check payload
if not payload.is_eof():
lingering_time = self._lingering_time
if not self._force_close and lingering_time:
self.log_debug(
'Start lingering close timer for %s sec.',
lingering_time)
now = loop.time()
end_t = now + lingering_time
with suppress(
asyncio.TimeoutError, asyncio.CancelledError):
while not payload.is_eof() and now < end_t:
with CeilTimeout(end_t - now, loop=loop):
# read and ignore
await payload.readany()
now = loop.time()
# if payload still uncompleted
if not payload.is_eof() and not self._force_close:
self.log_debug('Uncompleted request.')
self.close()
payload.set_exception(PayloadAccessError())
except asyncio.CancelledError:
self.log_debug('Ignored premature client disconnection ')
break
except RuntimeError as exc:
if self.debug:
self.log_exception(
'Unhandled runtime exception', exc_info=exc)
self.force_close()
except Exception as exc:
self.log_exception('Unhandled exception', exc_info=exc)
self.force_close()
finally:
if self.transport is None and resp is not None:
self.log_debug('Ignored premature client disconnection.')
elif not self._force_close:
if self._keepalive and not self._close:
# start keep-alive timer
if keepalive_timeout is not None:
now = self._loop.time()
self._keepalive_time = now
if self._keepalive_handle is None:
self._keepalive_handle = loop.call_at(
now + keepalive_timeout,
self._process_keepalive)
else:
break
# remove handler, close transport if no handlers left
if not self._force_close:
self._task_handler = None
if self.transport is not None and self._error_handler is None:
self.transport.close()
def handle_error(self,
request: BaseRequest,
status: int=500,
exc: Optional[BaseException]=None,
message: Optional[str]=None) -> StreamResponse:
"""Handle errors.
Returns HTTP response with specific status code. Logs additional
information. It always closes current connection."""
self.log_exception("Error handling request", exc_info=exc)
ct = 'text/plain'
if status == HTTPStatus.INTERNAL_SERVER_ERROR:
title = '{0.value} {0.phrase}'.format(
HTTPStatus.INTERNAL_SERVER_ERROR
)
msg = HTTPStatus.INTERNAL_SERVER_ERROR.description
tb = None
if self.debug:
with suppress(Exception):
tb = traceback.format_exc()
if 'text/html' in request.headers.get('Accept', ''):
if tb:
tb = html_escape(tb)
msg = '<h2>Traceback:</h2>\n<pre>{}</pre>'.format(tb)
message = (
"<html><head>"
"<title>{title}</title>"
"</head><body>\n<h1>{title}</h1>"
"\n{msg}\n</body></html>\n"
).format(title=title, msg=msg)
ct = 'text/html'
else:
if tb:
msg = tb
message = title + '\n\n' + msg
resp = Response(status=status, text=message, content_type=ct)
resp.force_close()
# some data already got sent, connection is broken
if request.writer.output_size > 0 or self.transport is None:
self.force_close()
return resp
async def handle_parse_error(self,
writer: AbstractStreamWriter,
status: int,
exc: Optional[BaseException]=None,
message: Optional[str]=None) -> None:
request = BaseRequest( # type: ignore
ERROR,
EMPTY_PAYLOAD,
self, writer,
current_task(),
self._loop)
resp = self.handle_error(request, status, exc, message)
await resp.prepare(request)
await resp.write_eof()
if self.transport is not None:
self.transport.close()
self._error_handler = None

754
matteo_env/Lib/site-packages/aiohttp/web_request.py Normal file
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@ -0,0 +1,754 @@
import asyncio
import datetime
import io
import re
import socket
import string
import tempfile
import types
import warnings
from email.utils import parsedate
from http.cookies import SimpleCookie
from types import MappingProxyType
from typing import ( # noqa
TYPE_CHECKING,
Any,
Dict,
Iterator,
Mapping,
MutableMapping,
Optional,
Tuple,
Union,
cast,
)
from urllib.parse import parse_qsl
import attr
from multidict import CIMultiDict, CIMultiDictProxy, MultiDict, MultiDictProxy
from yarl import URL
from . import hdrs
from .abc import AbstractStreamWriter
from .helpers import DEBUG, ChainMapProxy, HeadersMixin, reify, sentinel
from .http_parser import RawRequestMessage
from .multipart import BodyPartReader, MultipartReader
from .streams import EmptyStreamReader, StreamReader
from .typedefs import (
DEFAULT_JSON_DECODER,
JSONDecoder,
LooseHeaders,
RawHeaders,
StrOrURL,
)
from .web_exceptions import HTTPRequestEntityTooLarge
from .web_response import StreamResponse
__all__ = ('BaseRequest', 'FileField', 'Request')
if TYPE_CHECKING: # pragma: no cover
from .web_app import Application # noqa
from .web_urldispatcher import UrlMappingMatchInfo # noqa
from .web_protocol import RequestHandler # noqa
@attr.s(frozen=True, slots=True)
class FileField:
name = attr.ib(type=str)
filename = attr.ib(type=str)
file = attr.ib(type=io.BufferedReader)
content_type = attr.ib(type=str)
headers = attr.ib(type=CIMultiDictProxy) # type: CIMultiDictProxy[str]
_TCHAR = string.digits + string.ascii_letters + r"!#$%&'*+.^_`|~-"
# '-' at the end to prevent interpretation as range in a char class
_TOKEN = r'[{tchar}]+'.format(tchar=_TCHAR)
_QDTEXT = r'[{}]'.format(
r''.join(chr(c) for c in (0x09, 0x20, 0x21) + tuple(range(0x23, 0x7F))))
# qdtext includes 0x5C to escape 0x5D ('\]')
# qdtext excludes obs-text (because obsoleted, and encoding not specified)
_QUOTED_PAIR = r'\\[\t !-~]'
_QUOTED_STRING = r'"(?:{quoted_pair}|{qdtext})*"'.format(
qdtext=_QDTEXT, quoted_pair=_QUOTED_PAIR)
_FORWARDED_PAIR = (
r'({token})=({token}|{quoted_string})(:\d{{1,4}})?'.format(
token=_TOKEN,
quoted_string=_QUOTED_STRING))
_QUOTED_PAIR_REPLACE_RE = re.compile(r'\\([\t !-~])')
# same pattern as _QUOTED_PAIR but contains a capture group
_FORWARDED_PAIR_RE = re.compile(_FORWARDED_PAIR)
############################################################
# HTTP Request
############################################################
class BaseRequest(MutableMapping[str, Any], HeadersMixin):
POST_METHODS = {hdrs.METH_PATCH, hdrs.METH_POST, hdrs.METH_PUT,
hdrs.METH_TRACE, hdrs.METH_DELETE}
ATTRS = HeadersMixin.ATTRS | frozenset([
'_message', '_protocol', '_payload_writer', '_payload', '_headers',
'_method', '_version', '_rel_url', '_post', '_read_bytes',
'_state', '_cache', '_task', '_client_max_size', '_loop',
'_transport_sslcontext', '_transport_peername'])
def __init__(self, message: RawRequestMessage,
payload: StreamReader, protocol: 'RequestHandler',
payload_writer: AbstractStreamWriter,
task: 'asyncio.Task[None]',
loop: asyncio.AbstractEventLoop,
*, client_max_size: int=1024**2,
state: Optional[Dict[str, Any]]=None,
scheme: Optional[str]=None,
host: Optional[str]=None,
remote: Optional[str]=None) -> None:
if state is None:
state = {}
self._message = message
self._protocol = protocol
self._payload_writer = payload_writer
self._payload = payload
self._headers = message.headers
self._method = message.method
self._version = message.version
self._rel_url = message.url
self._post = None # type: Optional[MultiDictProxy[Union[str, bytes, FileField]]] # noqa
self._read_bytes = None # type: Optional[bytes]
self._state = state
self._cache = {} # type: Dict[str, Any]
self._task = task
self._client_max_size = client_max_size
self._loop = loop
transport = self._protocol.transport
assert transport is not None
self._transport_sslcontext = transport.get_extra_info('sslcontext')
self._transport_peername = transport.get_extra_info('peername')
if scheme is not None:
self._cache['scheme'] = scheme
if host is not None:
self._cache['host'] = host
if remote is not None:
self._cache['remote'] = remote
def clone(self, *, method: str=sentinel, rel_url: StrOrURL=sentinel,
headers: LooseHeaders=sentinel, scheme: str=sentinel,
host: str=sentinel,
remote: str=sentinel) -> 'BaseRequest':
"""Clone itself with replacement some attributes.
Creates and returns a new instance of Request object. If no parameters
are given, an exact copy is returned. If a parameter is not passed, it
will reuse the one from the current request object.
"""
if self._read_bytes:
raise RuntimeError("Cannot clone request "
"after reading its content")
dct = {} # type: Dict[str, Any]
if method is not sentinel:
dct['method'] = method
if rel_url is not sentinel:
new_url = URL(rel_url)
dct['url'] = new_url
dct['path'] = str(new_url)
if headers is not sentinel:
# a copy semantic
dct['headers'] = CIMultiDictProxy(CIMultiDict(headers))
dct['raw_headers'] = tuple((k.encode('utf-8'), v.encode('utf-8'))
for k, v in headers.items())
message = self._message._replace(**dct)
kwargs = {}
if scheme is not sentinel:
kwargs['scheme'] = scheme
if host is not sentinel:
kwargs['host'] = host
if remote is not sentinel:
kwargs['remote'] = remote
return self.__class__(
message,
self._payload,
self._protocol,
self._payload_writer,
self._task,
self._loop,
client_max_size=self._client_max_size,
state=self._state.copy(),
**kwargs)
@property
def task(self) -> 'asyncio.Task[None]':
return self._task
@property
def protocol(self) -> 'RequestHandler':
return self._protocol
@property
def transport(self) -> Optional[asyncio.Transport]:
if self._protocol is None:
return None
return self._protocol.transport
@property
def writer(self) -> AbstractStreamWriter:
return self._payload_writer
@reify
def message(self) -> RawRequestMessage:
warnings.warn("Request.message is deprecated",
DeprecationWarning,
stacklevel=3)
return self._message
@reify
def rel_url(self) -> URL:
return self._rel_url
@reify
def loop(self) -> asyncio.AbstractEventLoop:
warnings.warn("request.loop property is deprecated",
DeprecationWarning,
stacklevel=2)
return self._loop
# MutableMapping API
def __getitem__(self, key: str) -> Any:
return self._state[key]
def __setitem__(self, key: str, value: Any) -> None:
self._state[key] = value
def __delitem__(self, key: str) -> None:
del self._state[key]
def __len__(self) -> int:
return len(self._state)
def __iter__(self) -> Iterator[str]:
return iter(self._state)
########
@reify
def secure(self) -> bool:
"""A bool indicating if the request is handled with SSL."""
return self.scheme == 'https'
@reify
def forwarded(self) -> Tuple[Mapping[str, str], ...]:
"""A tuple containing all parsed Forwarded header(s).
Makes an effort to parse Forwarded headers as specified by RFC 7239:
- It adds one (immutable) dictionary per Forwarded 'field-value', ie
per proxy. The element corresponds to the data in the Forwarded
field-value added by the first proxy encountered by the client. Each
subsequent item corresponds to those added by later proxies.
- It checks that every value has valid syntax in general as specified
in section 4: either a 'token' or a 'quoted-string'.
- It un-escapes found escape sequences.
- It does NOT validate 'by' and 'for' contents as specified in section
6.
- It does NOT validate 'host' contents (Host ABNF).
- It does NOT validate 'proto' contents for valid URI scheme names.
Returns a tuple containing one or more immutable dicts
"""
elems = []
for field_value in self._message.headers.getall(hdrs.FORWARDED, ()):
length = len(field_value)
pos = 0
need_separator = False
elem = {} # type: Dict[str, str]
elems.append(types.MappingProxyType(elem))
while 0 <= pos < length:
match = _FORWARDED_PAIR_RE.match(field_value, pos)
if match is not None: # got a valid forwarded-pair
if need_separator:
# bad syntax here, skip to next comma
pos = field_value.find(',', pos)
else:
name, value, port = match.groups()
if value[0] == '"':
# quoted string: remove quotes and unescape
value = _QUOTED_PAIR_REPLACE_RE.sub(r'\1',
value[1:-1])
if port:
value += port
elem[name.lower()] = value
pos += len(match.group(0))
need_separator = True
elif field_value[pos] == ',': # next forwarded-element
need_separator = False
elem = {}
elems.append(types.MappingProxyType(elem))
pos += 1
elif field_value[pos] == ';': # next forwarded-pair
need_separator = False
pos += 1
elif field_value[pos] in ' \t':
# Allow whitespace even between forwarded-pairs, though
# RFC 7239 doesn't. This simplifies code and is in line
# with Postel's law.
pos += 1
else:
# bad syntax here, skip to next comma
pos = field_value.find(',', pos)
return tuple(elems)
@reify
def scheme(self) -> str:
"""A string representing the scheme of the request.
Hostname is resolved in this order:
- overridden value by .clone(scheme=new_scheme) call.
- type of connection to peer: HTTPS if socket is SSL, HTTP otherwise.
'http' or 'https'.
"""
if self._transport_sslcontext:
return 'https'
else:
return 'http'
@reify
def method(self) -> str:
"""Read only property for getting HTTP method.
The value is upper-cased str like 'GET', 'POST', 'PUT' etc.
"""
return self._method
@reify
def version(self) -> Tuple[int, int]:
"""Read only property for getting HTTP version of request.
Returns aiohttp.protocol.HttpVersion instance.
"""
return self._version
@reify
def host(self) -> str:
"""Hostname of the request.
Hostname is resolved in this order:
- overridden value by .clone(host=new_host) call.
- HOST HTTP header
- socket.getfqdn() value
"""
host = self._message.headers.get(hdrs.HOST)
if host is not None:
return host
else:
return socket.getfqdn()
@reify
def remote(self) -> Optional[str]:
"""Remote IP of client initiated HTTP request.
The IP is resolved in this order:
- overridden value by .clone(remote=new_remote) call.
- peername of opened socket
"""
if isinstance(self._transport_peername, (list, tuple)):
return self._transport_peername[0]
else:
return self._transport_peername
@reify
def url(self) -> URL:
url = URL.build(scheme=self.scheme, host=self.host)
return url.join(self._rel_url)
@reify
def path(self) -> str:
"""The URL including *PATH INFO* without the host or scheme.
E.g., ``/app/blog``
"""
return self._rel_url.path
@reify
def path_qs(self) -> str:
"""The URL including PATH_INFO and the query string.
E.g, /app/blog?id=10
"""
return str(self._rel_url)
@reify
def raw_path(self) -> str:
""" The URL including raw *PATH INFO* without the host or scheme.
Warning, the path is unquoted and may contains non valid URL characters
E.g., ``/my%2Fpath%7Cwith%21some%25strange%24characters``
"""
return self._message.path
@reify
def query(self) -> 'MultiDictProxy[str]':
"""A multidict with all the variables in the query string."""
return self._rel_url.query
@reify
def query_string(self) -> str:
"""The query string in the URL.
E.g., id=10
"""
return self._rel_url.query_string
@reify
def headers(self) -> 'CIMultiDictProxy[str]':
"""A case-insensitive multidict proxy with all headers."""
return self._headers
@reify
def raw_headers(self) -> RawHeaders:
"""A sequence of pairs for all headers."""
return self._message.raw_headers
@staticmethod
def _http_date(_date_str: str) -> Optional[datetime.datetime]:
"""Process a date string, return a datetime object
"""
if _date_str is not None:
timetuple = parsedate(_date_str)
if timetuple is not None:
return datetime.datetime(*timetuple[:6],
tzinfo=datetime.timezone.utc)
return None
@reify
def if_modified_since(self) -> Optional[datetime.datetime]:
"""The value of If-Modified-Since HTTP header, or None.
This header is represented as a `datetime` object.
"""
return self._http_date(self.headers.get(hdrs.IF_MODIFIED_SINCE))
@reify
def if_unmodified_since(self) -> Optional[datetime.datetime]:
"""The value of If-Unmodified-Since HTTP header, or None.
This header is represented as a `datetime` object.
"""
return self._http_date(self.headers.get(hdrs.IF_UNMODIFIED_SINCE))
@reify
def if_range(self) -> Optional[datetime.datetime]:
"""The value of If-Range HTTP header, or None.
This header is represented as a `datetime` object.
"""
return self._http_date(self.headers.get(hdrs.IF_RANGE))
@reify
def keep_alive(self) -> bool:
"""Is keepalive enabled by client?"""
return not self._message.should_close
@reify
def cookies(self) -> Mapping[str, str]:
"""Return request cookies.
A read-only dictionary-like object.
"""
raw = self.headers.get(hdrs.COOKIE, '')
parsed = SimpleCookie(raw)
return MappingProxyType(
{key: val.value for key, val in parsed.items()})
@reify
def http_range(self) -> slice:
"""The content of Range HTTP header.
Return a slice instance.
"""
rng = self._headers.get(hdrs.RANGE)
start, end = None, None
if rng is not None:
try:
pattern = r'^bytes=(\d*)-(\d*)$'
start, end = re.findall(pattern, rng)[0]
except IndexError: # pattern was not found in header
raise ValueError("range not in acceptable format")
end = int(end) if end else None
start = int(start) if start else None
if start is None and end is not None:
# end with no start is to return tail of content
start = -end
end = None
if start is not None and end is not None:
# end is inclusive in range header, exclusive for slice
end += 1
if start >= end:
raise ValueError('start cannot be after end')
if start is end is None: # No valid range supplied
raise ValueError('No start or end of range specified')
return slice(start, end, 1)
@reify
def content(self) -> StreamReader:
"""Return raw payload stream."""
return self._payload
@property
def has_body(self) -> bool:
"""Return True if request's HTTP BODY can be read, False otherwise."""
warnings.warn(
"Deprecated, use .can_read_body #2005",
DeprecationWarning, stacklevel=2)
return not self._payload.at_eof()
@property
def can_read_body(self) -> bool:
"""Return True if request's HTTP BODY can be read, False otherwise."""
return not self._payload.at_eof()
@reify
def body_exists(self) -> bool:
"""Return True if request has HTTP BODY, False otherwise."""
return type(self._payload) is not EmptyStreamReader
async def release(self) -> None:
"""Release request.
Eat unread part of HTTP BODY if present.
"""
while not self._payload.at_eof():
await self._payload.readany()
async def read(self) -> bytes:
"""Read request body if present.
Returns bytes object with full request content.
"""
if self._read_bytes is None:
body = bytearray()
while True:
chunk = await self._payload.readany()
body.extend(chunk)
if self._client_max_size:
body_size = len(body)
if body_size >= self._client_max_size:
raise HTTPRequestEntityTooLarge(
max_size=self._client_max_size,
actual_size=body_size
)
if not chunk:
break
self._read_bytes = bytes(body)
return self._read_bytes
async def text(self) -> str:
"""Return BODY as text using encoding from .charset."""
bytes_body = await self.read()
encoding = self.charset or 'utf-8'
return bytes_body.decode(encoding)
async def json(self, *, loads: JSONDecoder=DEFAULT_JSON_DECODER) -> Any:
"""Return BODY as JSON."""
body = await self.text()
return loads(body)
async def multipart(self) -> MultipartReader:
"""Return async iterator to process BODY as multipart."""
return MultipartReader(self._headers, self._payload)
async def post(self) -> 'MultiDictProxy[Union[str, bytes, FileField]]':
"""Return POST parameters."""
if self._post is not None:
return self._post
if self._method not in self.POST_METHODS:
self._post = MultiDictProxy(MultiDict())
return self._post
content_type = self.content_type
if (content_type not in ('',
'application/x-www-form-urlencoded',
'multipart/form-data')):
self._post = MultiDictProxy(MultiDict())
return self._post
out = MultiDict() # type: MultiDict[Union[str, bytes, FileField]]
if content_type == 'multipart/form-data':
multipart = await self.multipart()
max_size = self._client_max_size
field = await multipart.next()
while field is not None:
size = 0
field_ct = field.headers.get(hdrs.CONTENT_TYPE)
if isinstance(field, BodyPartReader):
if field.filename and field_ct:
# store file in temp file
tmp = tempfile.TemporaryFile()
chunk = await field.read_chunk(size=2**16)
while chunk:
chunk = field.decode(chunk)
tmp.write(chunk)
size += len(chunk)
if 0 < max_size < size:
raise HTTPRequestEntityTooLarge(
max_size=max_size,
actual_size=size
)
chunk = await field.read_chunk(size=2**16)
tmp.seek(0)
ff = FileField(field.name, field.filename,
cast(io.BufferedReader, tmp),
field_ct, field.headers)
out.add(field.name, ff)
else:
# deal with ordinary data
value = await field.read(decode=True)
if field_ct is None or \
field_ct.startswith('text/'):
charset = field.get_charset(default='utf-8')
out.add(field.name, value.decode(charset))
else:
out.add(field.name, value)
size += len(value)
if 0 < max_size < size:
raise HTTPRequestEntityTooLarge(
max_size=max_size,
actual_size=size
)
else:
raise ValueError(
'To decode nested multipart you need '
'to use custom reader',
)
field = await multipart.next()
else:
data = await self.read()
if data:
charset = self.charset or 'utf-8'
out.extend(
parse_qsl(
data.rstrip().decode(charset),
keep_blank_values=True,
encoding=charset))
self._post = MultiDictProxy(out)
return self._post
def __repr__(self) -> str:
ascii_encodable_path = self.path.encode('ascii', 'backslashreplace') \
.decode('ascii')
return "<{} {} {} >".format(self.__class__.__name__,
self._method, ascii_encodable_path)
def __eq__(self, other: object) -> bool:
return id(self) == id(other)
def __bool__(self) -> bool:
return True
async def _prepare_hook(self, response: StreamResponse) -> None:
return
class Request(BaseRequest):
ATTRS = BaseRequest.ATTRS | frozenset(['_match_info'])
def __init__(self, *args: Any, **kwargs: Any) -> None:
super().__init__(*args, **kwargs)
# matchdict, route_name, handler
# or information about traversal lookup
# initialized after route resolving
self._match_info = None # type: Optional[UrlMappingMatchInfo]
if DEBUG:
def __setattr__(self, name: str, val: Any) -> None:
if name not in self.ATTRS:
warnings.warn("Setting custom {}.{} attribute "
"is discouraged".format(self.__class__.__name__,
name),
DeprecationWarning,
stacklevel=2)
super().__setattr__(name, val)
def clone(self, *, method: str=sentinel, rel_url:
StrOrURL=sentinel, headers: LooseHeaders=sentinel,
scheme: str=sentinel, host: str=sentinel, remote:
str=sentinel) -> 'Request':
ret = super().clone(method=method,
rel_url=rel_url,
headers=headers,
scheme=scheme,
host=host,
remote=remote)
new_ret = cast(Request, ret)
new_ret._match_info = self._match_info
return new_ret
@reify
def match_info(self) -> 'UrlMappingMatchInfo':
"""Result of route resolving."""
match_info = self._match_info
assert match_info is not None
return match_info
@property
def app(self) -> 'Application':
"""Application instance."""
match_info = self._match_info
assert match_info is not None
return match_info.current_app
@property
def config_dict(self) -> ChainMapProxy:
match_info = self._match_info
assert match_info is not None
lst = match_info.apps
app = self.app
idx = lst.index(app)
sublist = list(reversed(lst[:idx + 1]))
return ChainMapProxy(sublist)
async def _prepare_hook(self, response: StreamResponse) -> None:
match_info = self._match_info
if match_info is None:
return
for app in match_info._apps:
await app.on_response_prepare.send(self, response)

717
matteo_env/Lib/site-packages/aiohttp/web_response.py Normal file
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@ -0,0 +1,717 @@
import asyncio # noqa
import collections.abc # noqa
import datetime
import enum
import json
import math
import time
import warnings
import zlib
from concurrent.futures import Executor
from email.utils import parsedate
from http.cookies import SimpleCookie
from typing import ( # noqa
TYPE_CHECKING,
Any,
Dict,
Iterator,
Mapping,
MutableMapping,
Optional,
Tuple,
Union,
cast,
)
from multidict import CIMultiDict, istr
from . import hdrs, payload
from .abc import AbstractStreamWriter
from .helpers import HeadersMixin, rfc822_formatted_time, sentinel
from .http import RESPONSES, SERVER_SOFTWARE, HttpVersion10, HttpVersion11
from .payload import Payload
from .typedefs import JSONEncoder, LooseHeaders
__all__ = ('ContentCoding', 'StreamResponse', 'Response', 'json_response')
if TYPE_CHECKING: # pragma: no cover
from .web_request import BaseRequest # noqa
BaseClass = MutableMapping[str, Any]
else:
BaseClass = collections.abc.MutableMapping
class ContentCoding(enum.Enum):
# The content codings that we have support for.
#
# Additional registered codings are listed at:
# https://www.iana.org/assignments/http-parameters/http-parameters.xhtml#content-coding
deflate = 'deflate'
gzip = 'gzip'
identity = 'identity'
############################################################
# HTTP Response classes
############################################################
class StreamResponse(BaseClass, HeadersMixin):
_length_check = True
def __init__(self, *,
status: int=200,
reason: Optional[str]=None,
headers: Optional[LooseHeaders]=None) -> None:
self._body = None
self._keep_alive = None # type: Optional[bool]
self._chunked = False
self._compression = False
self._compression_force = None # type: Optional[ContentCoding]
self._cookies = SimpleCookie()
self._req = None # type: Optional[BaseRequest]
self._payload_writer = None # type: Optional[AbstractStreamWriter]
self._eof_sent = False
self._body_length = 0
self._state = {} # type: Dict[str, Any]
if headers is not None:
self._headers = CIMultiDict(headers) # type: CIMultiDict[str]
else:
self._headers = CIMultiDict()
self.set_status(status, reason)
@property
def prepared(self) -> bool:
return self._payload_writer is not None
@property
def task(self) -> 'asyncio.Task[None]':
return getattr(self._req, 'task', None)
@property
def status(self) -> int:
return self._status
@property
def chunked(self) -> bool:
return self._chunked
@property
def compression(self) -> bool:
return self._compression
@property
def reason(self) -> str:
return self._reason
def set_status(self, status: int,
reason: Optional[str]=None,
_RESPONSES: Mapping[int,
Tuple[str, str]]=RESPONSES) -> None:
assert not self.prepared, \
'Cannot change the response status code after ' \
'the headers have been sent'
self._status = int(status)
if reason is None:
try:
reason = _RESPONSES[self._status][0]
except Exception:
reason = ''
self._reason = reason
@property
def keep_alive(self) -> Optional[bool]:
return self._keep_alive
def force_close(self) -> None:
self._keep_alive = False
@property
def body_length(self) -> int:
return self._body_length
@property
def output_length(self) -> int:
warnings.warn('output_length is deprecated', DeprecationWarning)
assert self._payload_writer
return self._payload_writer.buffer_size
def enable_chunked_encoding(self, chunk_size: Optional[int]=None) -> None:
"""Enables automatic chunked transfer encoding."""
self._chunked = True
if hdrs.CONTENT_LENGTH in self._headers:
raise RuntimeError("You can't enable chunked encoding when "
"a content length is set")
if chunk_size is not None:
warnings.warn('Chunk size is deprecated #1615', DeprecationWarning)
def enable_compression(self,
force: Optional[Union[bool, ContentCoding]]=None
) -> None:
"""Enables response compression encoding."""
# Backwards compatibility for when force was a bool <0.17.
if type(force) == bool:
force = ContentCoding.deflate if force else ContentCoding.identity
warnings.warn("Using boolean for force is deprecated #3318",
DeprecationWarning)
elif force is not None:
assert isinstance(force, ContentCoding), ("force should one of "
"None, bool or "
"ContentEncoding")
self._compression = True
self._compression_force = force
@property
def headers(self) -> 'CIMultiDict[str]':
return self._headers
@property
def cookies(self) -> SimpleCookie:
return self._cookies
def set_cookie(self, name: str, value: str, *,
expires: Optional[str]=None,
domain: Optional[str]=None,
max_age: Optional[Union[int, str]]=None,
path: str='/',
secure: Optional[str]=None,
httponly: Optional[str]=None,
version: Optional[str]=None) -> None:
"""Set or update response cookie.
Sets new cookie or updates existent with new value.
Also updates only those params which are not None.
"""
old = self._cookies.get(name)
if old is not None and old.coded_value == '':
# deleted cookie
self._cookies.pop(name, None)
self._cookies[name] = value
c = self._cookies[name]
if expires is not None:
c['expires'] = expires
elif c.get('expires') == 'Thu, 01 Jan 1970 00:00:00 GMT':
del c['expires']
if domain is not None:
c['domain'] = domain
if max_age is not None:
c['max-age'] = str(max_age)
elif 'max-age' in c:
del c['max-age']
c['path'] = path
if secure is not None:
c['secure'] = secure
if httponly is not None:
c['httponly'] = httponly
if version is not None:
c['version'] = version
def del_cookie(self, name: str, *,
domain: Optional[str]=None,
path: str='/') -> None:
"""Delete cookie.
Creates new empty expired cookie.
"""
# TODO: do we need domain/path here?
self._cookies.pop(name, None)
self.set_cookie(name, '', max_age=0,
expires="Thu, 01 Jan 1970 00:00:00 GMT",
domain=domain, path=path)
@property
def content_length(self) -> Optional[int]:
# Just a placeholder for adding setter
return super().content_length
@content_length.setter
def content_length(self, value: Optional[int]) -> None:
if value is not None:
value = int(value)
if self._chunked:
raise RuntimeError("You can't set content length when "
"chunked encoding is enable")
self._headers[hdrs.CONTENT_LENGTH] = str(value)
else:
self._headers.pop(hdrs.CONTENT_LENGTH, None)
@property
def content_type(self) -> str:
# Just a placeholder for adding setter
return super().content_type
@content_type.setter
def content_type(self, value: str) -> None:
self.content_type # read header values if needed
self._content_type = str(value)
self._generate_content_type_header()
@property
def charset(self) -> Optional[str]:
# Just a placeholder for adding setter
return super().charset
@charset.setter
def charset(self, value: Optional[str]) -> None:
ctype = self.content_type # read header values if needed
if ctype == 'application/octet-stream':
raise RuntimeError("Setting charset for application/octet-stream "
"doesn't make sense, setup content_type first")
assert self._content_dict is not None
if value is None:
self._content_dict.pop('charset', None)
else:
self._content_dict['charset'] = str(value).lower()
self._generate_content_type_header()
@property
def last_modified(self) -> Optional[datetime.datetime]:
"""The value of Last-Modified HTTP header, or None.
This header is represented as a `datetime` object.
"""
httpdate = self._headers.get(hdrs.LAST_MODIFIED)
if httpdate is not None:
timetuple = parsedate(httpdate)
if timetuple is not None:
return datetime.datetime(*timetuple[:6],
tzinfo=datetime.timezone.utc)
return None
@last_modified.setter
def last_modified(self,
value: Optional[
Union[int, float, datetime.datetime, str]]) -> None:
if value is None:
self._headers.pop(hdrs.LAST_MODIFIED, None)
elif isinstance(value, (int, float)):
self._headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", time.gmtime(math.ceil(value)))
elif isinstance(value, datetime.datetime):
self._headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", value.utctimetuple())
elif isinstance(value, str):
self._headers[hdrs.LAST_MODIFIED] = value
def _generate_content_type_header(
self,
CONTENT_TYPE: istr=hdrs.CONTENT_TYPE) -> None:
assert self._content_dict is not None
assert self._content_type is not None
params = '; '.join("{}={}".format(k, v)
for k, v in self._content_dict.items())
if params:
ctype = self._content_type + '; ' + params
else:
ctype = self._content_type
self._headers[CONTENT_TYPE] = ctype
async def _do_start_compression(self, coding: ContentCoding) -> None:
if coding != ContentCoding.identity:
assert self._payload_writer is not None
self._headers[hdrs.CONTENT_ENCODING] = coding.value
self._payload_writer.enable_compression(coding.value)
# Compressed payload may have different content length,
# remove the header
self._headers.popall(hdrs.CONTENT_LENGTH, None)
async def _start_compression(self, request: 'BaseRequest') -> None:
if self._compression_force:
await self._do_start_compression(self._compression_force)
else:
accept_encoding = request.headers.get(
hdrs.ACCEPT_ENCODING, '').lower()
for coding in ContentCoding:
if coding.value in accept_encoding:
await self._do_start_compression(coding)
return
async def prepare(
self,
request: 'BaseRequest'
) -> Optional[AbstractStreamWriter]:
if self._eof_sent:
return None
if self._payload_writer is not None:
return self._payload_writer
await request._prepare_hook(self)
return await self._start(request)
async def _start(self, request: 'BaseRequest') -> AbstractStreamWriter:
self._req = request
keep_alive = self._keep_alive
if keep_alive is None:
keep_alive = request.keep_alive
self._keep_alive = keep_alive
version = request.version
writer = self._payload_writer = request._payload_writer
headers = self._headers
for cookie in self._cookies.values():
value = cookie.output(header='')[1:]
headers.add(hdrs.SET_COOKIE, value)
if self._compression:
await self._start_compression(request)
if self._chunked:
if version != HttpVersion11:
raise RuntimeError(
"Using chunked encoding is forbidden "
"for HTTP/{0.major}.{0.minor}".format(request.version))
writer.enable_chunking()
headers[hdrs.TRANSFER_ENCODING] = 'chunked'
if hdrs.CONTENT_LENGTH in headers:
del headers[hdrs.CONTENT_LENGTH]
elif self._length_check:
writer.length = self.content_length
if writer.length is None:
if version >= HttpVersion11:
writer.enable_chunking()
headers[hdrs.TRANSFER_ENCODING] = 'chunked'
if hdrs.CONTENT_LENGTH in headers:
del headers[hdrs.CONTENT_LENGTH]
else:
keep_alive = False
headers.setdefault(hdrs.CONTENT_TYPE, 'application/octet-stream')
headers.setdefault(hdrs.DATE, rfc822_formatted_time())
headers.setdefault(hdrs.SERVER, SERVER_SOFTWARE)
# connection header
if hdrs.CONNECTION not in headers:
if keep_alive:
if version == HttpVersion10:
headers[hdrs.CONNECTION] = 'keep-alive'
else:
if version == HttpVersion11:
headers[hdrs.CONNECTION] = 'close'
# status line
status_line = 'HTTP/{}.{} {} {}'.format(
version[0], version[1], self._status, self._reason)
await writer.write_headers(status_line, headers)
return writer
async def write(self, data: bytes) -> None:
assert isinstance(data, (bytes, bytearray, memoryview)), \
"data argument must be byte-ish (%r)" % type(data)
if self._eof_sent:
raise RuntimeError("Cannot call write() after write_eof()")
if self._payload_writer is None:
raise RuntimeError("Cannot call write() before prepare()")
await self._payload_writer.write(data)
async def drain(self) -> None:
assert not self._eof_sent, "EOF has already been sent"
assert self._payload_writer is not None, \
"Response has not been started"
warnings.warn("drain method is deprecated, use await resp.write()",
DeprecationWarning,
stacklevel=2)
await self._payload_writer.drain()
async def write_eof(self, data: bytes=b'') -> None:
assert isinstance(data, (bytes, bytearray, memoryview)), \
"data argument must be byte-ish (%r)" % type(data)
if self._eof_sent:
return
assert self._payload_writer is not None, \
"Response has not been started"
await self._payload_writer.write_eof(data)
self._eof_sent = True
self._req = None
self._body_length = self._payload_writer.output_size
self._payload_writer = None
def __repr__(self) -> str:
if self._eof_sent:
info = "eof"
elif self.prepared:
assert self._req is not None
info = "{} {} ".format(self._req.method, self._req.path)
else:
info = "not prepared"
return "<{} {} {}>".format(self.__class__.__name__,
self.reason, info)
def __getitem__(self, key: str) -> Any:
return self._state[key]
def __setitem__(self, key: str, value: Any) -> None:
self._state[key] = value
def __delitem__(self, key: str) -> None:
del self._state[key]
def __len__(self) -> int:
return len(self._state)
def __iter__(self) -> Iterator[str]:
return iter(self._state)
def __hash__(self) -> int:
return hash(id(self))
def __eq__(self, other: object) -> bool:
return self is other
class Response(StreamResponse):
def __init__(self, *,
body: Any=None,
status: int=200,
reason: Optional[str]=None,
text: Optional[str]=None,
headers: Optional[LooseHeaders]=None,
content_type: Optional[str]=None,
charset: Optional[str]=None,
zlib_executor_size: Optional[int]=None,
zlib_executor: Executor=None) -> None:
if body is not None and text is not None:
raise ValueError("body and text are not allowed together")
if headers is None:
real_headers = CIMultiDict() # type: CIMultiDict[str]
elif not isinstance(headers, CIMultiDict):
real_headers = CIMultiDict(headers)
else:
real_headers = headers # = cast('CIMultiDict[str]', headers)
if content_type is not None and "charset" in content_type:
raise ValueError("charset must not be in content_type "
"argument")
if text is not None:
if hdrs.CONTENT_TYPE in real_headers:
if content_type or charset:
raise ValueError("passing both Content-Type header and "
"content_type or charset params "
"is forbidden")
else:
# fast path for filling headers
if not isinstance(text, str):
raise TypeError("text argument must be str (%r)" %
type(text))
if content_type is None:
content_type = 'text/plain'
if charset is None:
charset = 'utf-8'
real_headers[hdrs.CONTENT_TYPE] = (
content_type + '; charset=' + charset)
body = text.encode(charset)
text = None
else:
if hdrs.CONTENT_TYPE in real_headers:
if content_type is not None or charset is not None:
raise ValueError("passing both Content-Type header and "
"content_type or charset params "
"is forbidden")
else:
if content_type is not None:
if charset is not None:
content_type += '; charset=' + charset
real_headers[hdrs.CONTENT_TYPE] = content_type
super().__init__(status=status, reason=reason, headers=real_headers)
if text is not None:
self.text = text
else:
self.body = body
self._compressed_body = None # type: Optional[bytes]
self._zlib_executor_size = zlib_executor_size
self._zlib_executor = zlib_executor
@property
def body(self) -> Optional[Union[bytes, Payload]]:
return self._body
@body.setter
def body(self, body: bytes,
CONTENT_TYPE: istr=hdrs.CONTENT_TYPE,
CONTENT_LENGTH: istr=hdrs.CONTENT_LENGTH) -> None:
if body is None:
self._body = None # type: Optional[bytes]
self._body_payload = False # type: bool
elif isinstance(body, (bytes, bytearray)):
self._body = body
self._body_payload = False
else:
try:
self._body = body = payload.PAYLOAD_REGISTRY.get(body)
except payload.LookupError:
raise ValueError('Unsupported body type %r' % type(body))
self._body_payload = True
headers = self._headers
# set content-length header if needed
if not self._chunked and CONTENT_LENGTH not in headers:
size = body.size
if size is not None:
headers[CONTENT_LENGTH] = str(size)
# set content-type
if CONTENT_TYPE not in headers:
headers[CONTENT_TYPE] = body.content_type
# copy payload headers
if body.headers:
for (key, value) in body.headers.items():
if key not in headers:
headers[key] = value
self._compressed_body = None
@property
def text(self) -> Optional[str]:
if self._body is None:
return None
return self._body.decode(self.charset or 'utf-8')
@text.setter
def text(self, text: str) -> None:
assert text is None or isinstance(text, str), \
"text argument must be str (%r)" % type(text)
if self.content_type == 'application/octet-stream':
self.content_type = 'text/plain'
if self.charset is None:
self.charset = 'utf-8'
self._body = text.encode(self.charset)
self._body_payload = False
self._compressed_body = None
@property
def content_length(self) -> Optional[int]:
if self._chunked:
return None
if hdrs.CONTENT_LENGTH in self._headers:
return super().content_length
if self._compressed_body is not None:
# Return length of the compressed body
return len(self._compressed_body)
elif self._body_payload:
# A payload without content length, or a compressed payload
return None
elif self._body is not None:
return len(self._body)
else:
return 0
@content_length.setter
def content_length(self, value: Optional[int]) -> None:
raise RuntimeError("Content length is set automatically")
async def write_eof(self, data: bytes=b'') -> None:
if self._eof_sent:
return
if self._compressed_body is None:
body = self._body # type: Optional[Union[bytes, Payload]]
else:
body = self._compressed_body
assert not data, "data arg is not supported, got {!r}".format(data)
assert self._req is not None
assert self._payload_writer is not None
if body is not None:
if (self._req._method == hdrs.METH_HEAD or
self._status in [204, 304]):
await super().write_eof()
elif self._body_payload:
payload = cast(Payload, body)
await payload.write(self._payload_writer)
await super().write_eof()
else:
await super().write_eof(cast(bytes, body))
else:
await super().write_eof()
async def _start(self, request: 'BaseRequest') -> AbstractStreamWriter:
if not self._chunked and hdrs.CONTENT_LENGTH not in self._headers:
if not self._body_payload:
if self._body is not None:
self._headers[hdrs.CONTENT_LENGTH] = str(len(self._body))
else:
self._headers[hdrs.CONTENT_LENGTH] = '0'
return await super()._start(request)
def _compress_body(self, zlib_mode: int) -> None:
compressobj = zlib.compressobj(wbits=zlib_mode)
body_in = self._body
assert body_in is not None
self._compressed_body = \
compressobj.compress(body_in) + compressobj.flush()
async def _do_start_compression(self, coding: ContentCoding) -> None:
if self._body_payload or self._chunked:
return await super()._do_start_compression(coding)
if coding != ContentCoding.identity:
# Instead of using _payload_writer.enable_compression,
# compress the whole body
zlib_mode = (16 + zlib.MAX_WBITS
if coding == ContentCoding.gzip else -zlib.MAX_WBITS)
body_in = self._body
assert body_in is not None
if self._zlib_executor_size is not None and \
len(body_in) > self._zlib_executor_size:
await asyncio.get_event_loop().run_in_executor(
self._zlib_executor, self._compress_body, zlib_mode)
else:
self._compress_body(zlib_mode)
body_out = self._compressed_body
assert body_out is not None
self._headers[hdrs.CONTENT_ENCODING] = coding.value
self._headers[hdrs.CONTENT_LENGTH] = str(len(body_out))
def json_response(data: Any=sentinel, *,
text: str=None,
body: bytes=None,
status: int=200,
reason: Optional[str]=None,
headers: LooseHeaders=None,
content_type: str='application/json',
dumps: JSONEncoder=json.dumps) -> Response:
if data is not sentinel:
if text or body:
raise ValueError(
"only one of data, text, or body should be specified"
)
else:
text = dumps(data)
return Response(text=text, body=body, status=status, reason=reason,
headers=headers, content_type=content_type)

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import abc
import os # noqa
from typing import (
TYPE_CHECKING,
Any,
Awaitable,
Callable,
Dict,
Iterator,
List,
Optional,
Sequence,
Type,
Union,
overload,
)
import attr
from . import hdrs
from .abc import AbstractView
from .typedefs import PathLike
if TYPE_CHECKING: # pragma: no cover
from .web_urldispatcher import UrlDispatcher
from .web_request import Request
from .web_response import StreamResponse
else:
Request = StreamResponse = UrlDispatcher = None
__all__ = ('AbstractRouteDef', 'RouteDef', 'StaticDef', 'RouteTableDef',
'head', 'options', 'get', 'post', 'patch', 'put', 'delete',
'route', 'view', 'static')
class AbstractRouteDef(abc.ABC):
@abc.abstractmethod
def register(self, router: UrlDispatcher) -> None:
pass # pragma: no cover
_SimpleHandler = Callable[[Request], Awaitable[StreamResponse]]
_HandlerType = Union[Type[AbstractView], _SimpleHandler]
@attr.s(frozen=True, repr=False, slots=True)
class RouteDef(AbstractRouteDef):
method = attr.ib(type=str)
path = attr.ib(type=str)
handler = attr.ib() # type: _HandlerType
kwargs = attr.ib(type=Dict[str, Any])
def __repr__(self) -> str:
info = []
for name, value in sorted(self.kwargs.items()):
info.append(", {}={!r}".format(name, value))
return ("<RouteDef {method} {path} -> {handler.__name__!r}"
"{info}>".format(method=self.method, path=self.path,
handler=self.handler, info=''.join(info)))
def register(self, router: UrlDispatcher) -> None:
if self.method in hdrs.METH_ALL:
reg = getattr(router, 'add_'+self.method.lower())
reg(self.path, self.handler, **self.kwargs)
else:
router.add_route(self.method, self.path, self.handler,
**self.kwargs)
@attr.s(frozen=True, repr=False, slots=True)
class StaticDef(AbstractRouteDef):
prefix = attr.ib(type=str)
path = attr.ib() # type: PathLike
kwargs = attr.ib(type=Dict[str, Any])
def __repr__(self) -> str:
info = []
for name, value in sorted(self.kwargs.items()):
info.append(", {}={!r}".format(name, value))
return ("<StaticDef {prefix} -> {path}"
"{info}>".format(prefix=self.prefix, path=self.path,
info=''.join(info)))
def register(self, router: UrlDispatcher) -> None:
router.add_static(self.prefix, self.path, **self.kwargs)
def route(method: str, path: str, handler: _HandlerType,
**kwargs: Any) -> RouteDef:
return RouteDef(method, path, handler, kwargs)
def head(path: str, handler: _HandlerType, **kwargs: Any) -> RouteDef:
return route(hdrs.METH_HEAD, path, handler, **kwargs)
def options(path: str, handler: _HandlerType, **kwargs: Any) -> RouteDef:
return route(hdrs.METH_OPTIONS, path, handler, **kwargs)
def get(path: str, handler: _HandlerType, *, name: Optional[str]=None,
allow_head: bool=True, **kwargs: Any) -> RouteDef:
return route(hdrs.METH_GET, path, handler, name=name,
allow_head=allow_head, **kwargs)
def post(path: str, handler: _HandlerType, **kwargs: Any) -> RouteDef:
return route(hdrs.METH_POST, path, handler, **kwargs)
def put(path: str, handler: _HandlerType, **kwargs: Any) -> RouteDef:
return route(hdrs.METH_PUT, path, handler, **kwargs)
def patch(path: str, handler: _HandlerType, **kwargs: Any) -> RouteDef:
return route(hdrs.METH_PATCH, path, handler, **kwargs)
def delete(path: str, handler: _HandlerType, **kwargs: Any) -> RouteDef:
return route(hdrs.METH_DELETE, path, handler, **kwargs)
def view(path: str, handler: Type[AbstractView], **kwargs: Any) -> RouteDef:
return route(hdrs.METH_ANY, path, handler, **kwargs)
def static(prefix: str, path: PathLike,
**kwargs: Any) -> StaticDef:
return StaticDef(prefix, path, kwargs)
_Deco = Callable[[_HandlerType], _HandlerType]
class RouteTableDef(Sequence[AbstractRouteDef]):
"""Route definition table"""
def __init__(self) -> None:
self._items = [] # type: List[AbstractRouteDef]
def __repr__(self) -> str:
return "<RouteTableDef count={}>".format(len(self._items))
@overload
def __getitem__(self, index: int) -> AbstractRouteDef: ... # noqa
@overload # noqa
def __getitem__(self, index: slice) -> List[AbstractRouteDef]: ... # noqa
def __getitem__(self, index): # type: ignore # noqa
return self._items[index]
def __iter__(self) -> Iterator[AbstractRouteDef]:
return iter(self._items)
def __len__(self) -> int:
return len(self._items)
def __contains__(self, item: object) -> bool:
return item in self._items
def route(self,
method: str,
path: str,
**kwargs: Any) -> _Deco:
def inner(handler: _HandlerType) -> _HandlerType:
self._items.append(RouteDef(method, path, handler, kwargs))
return handler
return inner
def head(self, path: str, **kwargs: Any) -> _Deco:
return self.route(hdrs.METH_HEAD, path, **kwargs)
def get(self, path: str, **kwargs: Any) -> _Deco:
return self.route(hdrs.METH_GET, path, **kwargs)
def post(self, path: str, **kwargs: Any) -> _Deco:
return self.route(hdrs.METH_POST, path, **kwargs)
def put(self, path: str, **kwargs: Any) -> _Deco:
return self.route(hdrs.METH_PUT, path, **kwargs)
def patch(self, path: str, **kwargs: Any) -> _Deco:
return self.route(hdrs.METH_PATCH, path, **kwargs)
def delete(self, path: str, **kwargs: Any) -> _Deco:
return self.route(hdrs.METH_DELETE, path, **kwargs)
def view(self, path: str, **kwargs: Any) -> _Deco:
return self.route(hdrs.METH_ANY, path, **kwargs)
def static(self, prefix: str, path: PathLike,
**kwargs: Any) -> None:
self._items.append(StaticDef(prefix, path, kwargs))

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import asyncio
import signal
import socket
from abc import ABC, abstractmethod
from typing import Any, List, Optional, Set
from yarl import URL
from .web_app import Application
from .web_server import Server
try:
from ssl import SSLContext
except ImportError:
SSLContext = object # type: ignore
__all__ = ('BaseSite', 'TCPSite', 'UnixSite', 'NamedPipeSite', 'SockSite',
'BaseRunner', 'AppRunner', 'ServerRunner', 'GracefulExit')
class GracefulExit(SystemExit):
code = 1
def _raise_graceful_exit() -> None:
raise GracefulExit()
class BaseSite(ABC):
__slots__ = ('_runner', '_shutdown_timeout', '_ssl_context', '_backlog',
'_server')
def __init__(self, runner: 'BaseRunner', *,
shutdown_timeout: float=60.0,
ssl_context: Optional[SSLContext]=None,
backlog: int=128) -> None:
if runner.server is None:
raise RuntimeError("Call runner.setup() before making a site")
self._runner = runner
self._shutdown_timeout = shutdown_timeout
self._ssl_context = ssl_context
self._backlog = backlog
self._server = None # type: Optional[asyncio.AbstractServer]
@property
@abstractmethod
def name(self) -> str:
pass # pragma: no cover
@abstractmethod
async def start(self) -> None:
self._runner._reg_site(self)
async def stop(self) -> None:
self._runner._check_site(self)
if self._server is None:
self._runner._unreg_site(self)
return # not started yet
self._server.close()
# named pipes do not have wait_closed property
if hasattr(self._server, 'wait_closed'):
await self._server.wait_closed()
await self._runner.shutdown()
assert self._runner.server
await self._runner.server.shutdown(self._shutdown_timeout)
self._runner._unreg_site(self)
class TCPSite(BaseSite):
__slots__ = ('_host', '_port', '_reuse_address', '_reuse_port')
def __init__(self, runner: 'BaseRunner',
host: str=None, port: int=None, *,
shutdown_timeout: float=60.0,
ssl_context: Optional[SSLContext]=None,
backlog: int=128, reuse_address: Optional[bool]=None,
reuse_port: Optional[bool]=None) -> None:
super().__init__(runner, shutdown_timeout=shutdown_timeout,
ssl_context=ssl_context, backlog=backlog)
if host is None:
host = "0.0.0.0"
self._host = host
if port is None:
port = 8443 if self._ssl_context else 8080
self._port = port
self._reuse_address = reuse_address
self._reuse_port = reuse_port
@property
def name(self) -> str:
scheme = 'https' if self._ssl_context else 'http'
return str(URL.build(scheme=scheme, host=self._host, port=self._port))
async def start(self) -> None:
await super().start()
loop = asyncio.get_event_loop()
server = self._runner.server
assert server is not None
self._server = await loop.create_server( # type: ignore
server, self._host, self._port,
ssl=self._ssl_context, backlog=self._backlog,
reuse_address=self._reuse_address,
reuse_port=self._reuse_port)
class UnixSite(BaseSite):
__slots__ = ('_path', )
def __init__(self, runner: 'BaseRunner', path: str, *,
shutdown_timeout: float=60.0,
ssl_context: Optional[SSLContext]=None,
backlog: int=128) -> None:
super().__init__(runner, shutdown_timeout=shutdown_timeout,
ssl_context=ssl_context, backlog=backlog)
self._path = path
@property
def name(self) -> str:
scheme = 'https' if self._ssl_context else 'http'
return '{}://unix:{}:'.format(scheme, self._path)
async def start(self) -> None:
await super().start()
loop = asyncio.get_event_loop()
server = self._runner.server
assert server is not None
self._server = await loop.create_unix_server(
server, self._path,
ssl=self._ssl_context, backlog=self._backlog)
class NamedPipeSite(BaseSite):
__slots__ = ('_path', )
def __init__(self, runner: 'BaseRunner', path: str, *,
shutdown_timeout: float=60.0) -> None:
loop = asyncio.get_event_loop()
if not isinstance(loop, asyncio.ProactorEventLoop): # type: ignore
raise RuntimeError("Named Pipes only available in proactor"
"loop under windows")
super().__init__(runner, shutdown_timeout=shutdown_timeout)
self._path = path
@property
def name(self) -> str:
return self._path
async def start(self) -> None:
await super().start()
loop = asyncio.get_event_loop()
server = self._runner.server
assert server is not None
_server = await loop.start_serving_pipe( # type: ignore
server, self._path
)
self._server = _server[0]
class SockSite(BaseSite):
__slots__ = ('_sock', '_name')
def __init__(self, runner: 'BaseRunner', sock: socket.socket, *,
shutdown_timeout: float=60.0,
ssl_context: Optional[SSLContext]=None,
backlog: int=128) -> None:
super().__init__(runner, shutdown_timeout=shutdown_timeout,
ssl_context=ssl_context, backlog=backlog)
self._sock = sock
scheme = 'https' if self._ssl_context else 'http'
if hasattr(socket, 'AF_UNIX') and sock.family == socket.AF_UNIX:
name = '{}://unix:{}:'.format(scheme, sock.getsockname())
else:
host, port = sock.getsockname()[:2]
name = str(URL.build(scheme=scheme, host=host, port=port))
self._name = name
@property
def name(self) -> str:
return self._name
async def start(self) -> None:
await super().start()
loop = asyncio.get_event_loop()
server = self._runner.server
assert server is not None
self._server = await loop.create_server( # type: ignore
server, sock=self._sock,
ssl=self._ssl_context, backlog=self._backlog)
class BaseRunner(ABC):
__slots__ = ('_handle_signals', '_kwargs', '_server', '_sites')
def __init__(self, *, handle_signals: bool=False, **kwargs: Any) -> None:
self._handle_signals = handle_signals
self._kwargs = kwargs
self._server = None # type: Optional[Server]
self._sites = [] # type: List[BaseSite]
@property
def server(self) -> Optional[Server]:
return self._server
@property
def addresses(self) -> List[str]:
ret = [] # type: List[str]
for site in self._sites:
server = site._server
if server is not None:
sockets = server.sockets
if sockets is not None:
for sock in sockets:
ret.append(sock.getsockname())
return ret
@property
def sites(self) -> Set[BaseSite]:
return set(self._sites)
async def setup(self) -> None:
loop = asyncio.get_event_loop()
if self._handle_signals:
try:
loop.add_signal_handler(signal.SIGINT, _raise_graceful_exit)
loop.add_signal_handler(signal.SIGTERM, _raise_graceful_exit)
except NotImplementedError: # pragma: no cover
# add_signal_handler is not implemented on Windows
pass
self._server = await self._make_server()
@abstractmethod
async def shutdown(self) -> None:
pass # pragma: no cover
async def cleanup(self) -> None:
loop = asyncio.get_event_loop()
if self._server is None:
# no started yet, do nothing
return
# The loop over sites is intentional, an exception on gather()
# leaves self._sites in unpredictable state.
# The loop guaranties that a site is either deleted on success or
# still present on failure
for site in list(self._sites):
await site.stop()
await self._cleanup_server()
self._server = None
if self._handle_signals:
try:
loop.remove_signal_handler(signal.SIGINT)
loop.remove_signal_handler(signal.SIGTERM)
except NotImplementedError: # pragma: no cover
# remove_signal_handler is not implemented on Windows
pass
@abstractmethod
async def _make_server(self) -> Server:
pass # pragma: no cover
@abstractmethod
async def _cleanup_server(self) -> None:
pass # pragma: no cover
def _reg_site(self, site: BaseSite) -> None:
if site in self._sites:
raise RuntimeError("Site {} is already registered in runner {}"
.format(site, self))
self._sites.append(site)
def _check_site(self, site: BaseSite) -> None:
if site not in self._sites:
raise RuntimeError("Site {} is not registered in runner {}"
.format(site, self))
def _unreg_site(self, site: BaseSite) -> None:
if site not in self._sites:
raise RuntimeError("Site {} is not registered in runner {}"
.format(site, self))
self._sites.remove(site)
class ServerRunner(BaseRunner):
"""Low-level web server runner"""
__slots__ = ('_web_server',)
def __init__(self, web_server: Server, *,
handle_signals: bool=False, **kwargs: Any) -> None:
super().__init__(handle_signals=handle_signals, **kwargs)
self._web_server = web_server
async def shutdown(self) -> None:
pass
async def _make_server(self) -> Server:
return self._web_server
async def _cleanup_server(self) -> None:
pass
class AppRunner(BaseRunner):
"""Web Application runner"""
__slots__ = ('_app',)
def __init__(self, app: Application, *,
handle_signals: bool=False, **kwargs: Any) -> None:
super().__init__(handle_signals=handle_signals, **kwargs)
if not isinstance(app, Application):
raise TypeError("The first argument should be web.Application "
"instance, got {!r}".format(app))
self._app = app
@property
def app(self) -> Application:
return self._app
async def shutdown(self) -> None:
await self._app.shutdown()
async def _make_server(self) -> Server:
loop = asyncio.get_event_loop()
self._app._set_loop(loop)
self._app.on_startup.freeze()
await self._app.startup()
self._app.freeze()
return self._app._make_handler(loop=loop, **self._kwargs)
async def _cleanup_server(self) -> None:
await self._app.cleanup()

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"""Low level HTTP server."""
import asyncio
from typing import Any, Awaitable, Callable, Dict, List, Optional # noqa
from .abc import AbstractStreamWriter
from .helpers import get_running_loop
from .http_parser import RawRequestMessage
from .streams import StreamReader
from .web_protocol import RequestHandler, _RequestFactory, _RequestHandler
from .web_request import BaseRequest
__all__ = ('Server',)
class Server:
def __init__(self,
handler: _RequestHandler,
*,
request_factory: Optional[_RequestFactory]=None,
loop: Optional[asyncio.AbstractEventLoop]=None,
**kwargs: Any) -> None:
self._loop = get_running_loop(loop)
self._connections = {} # type: Dict[RequestHandler, asyncio.Transport]
self._kwargs = kwargs
self.requests_count = 0
self.request_handler = handler
self.request_factory = request_factory or self._make_request
@property
def connections(self) -> List[RequestHandler]:
return list(self._connections.keys())
def connection_made(self, handler: RequestHandler,
transport: asyncio.Transport) -> None:
self._connections[handler] = transport
def connection_lost(self, handler: RequestHandler,
exc: Optional[BaseException]=None) -> None:
if handler in self._connections:
del self._connections[handler]
def _make_request(self, message: RawRequestMessage,
payload: StreamReader,
protocol: RequestHandler,
writer: AbstractStreamWriter,
task: 'asyncio.Task[None]') -> BaseRequest:
return BaseRequest(
message, payload, protocol, writer, task, self._loop)
async def shutdown(self, timeout: Optional[float]=None) -> None:
coros = [conn.shutdown(timeout) for conn in self._connections]
await asyncio.gather(*coros, loop=self._loop)
self._connections.clear()
def __call__(self) -> RequestHandler:
return RequestHandler(self, loop=self._loop, **self._kwargs)

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import asyncio
import base64
import binascii
import hashlib
import json
from typing import Any, Iterable, Optional, Tuple
import async_timeout
import attr
from multidict import CIMultiDict
from . import hdrs
from .abc import AbstractStreamWriter
from .helpers import call_later, set_result
from .http import (
WS_CLOSED_MESSAGE,
WS_CLOSING_MESSAGE,
WS_KEY,
WebSocketError,
WebSocketReader,
WebSocketWriter,
WSMessage,
)
from .http import WSMsgType as WSMsgType
from .http import ws_ext_gen, ws_ext_parse
from .log import ws_logger
from .streams import EofStream, FlowControlDataQueue
from .typedefs import JSONDecoder, JSONEncoder
from .web_exceptions import HTTPBadRequest, HTTPException
from .web_request import BaseRequest
from .web_response import StreamResponse
__all__ = ('WebSocketResponse', 'WebSocketReady', 'WSMsgType',)
THRESHOLD_CONNLOST_ACCESS = 5
@attr.s(frozen=True, slots=True)
class WebSocketReady:
ok = attr.ib(type=bool)
protocol = attr.ib(type=Optional[str])
def __bool__(self) -> bool:
return self.ok
class WebSocketResponse(StreamResponse):
_length_check = False
def __init__(self, *,
timeout: float=10.0, receive_timeout: Optional[float]=None,
autoclose: bool=True, autoping: bool=True,
heartbeat: Optional[float]=None,
protocols: Iterable[str]=(),
compress: bool=True, max_msg_size: int=4*1024*1024) -> None:
super().__init__(status=101)
self._protocols = protocols
self._ws_protocol = None # type: Optional[str]
self._writer = None # type: Optional[WebSocketWriter]
self._reader = None # type: Optional[FlowControlDataQueue[WSMessage]]
self._closed = False
self._closing = False
self._conn_lost = 0
self._close_code = None # type: Optional[int]
self._loop = None # type: Optional[asyncio.AbstractEventLoop]
self._waiting = None # type: Optional[asyncio.Future[bool]]
self._exception = None # type: Optional[BaseException]
self._timeout = timeout
self._receive_timeout = receive_timeout
self._autoclose = autoclose
self._autoping = autoping
self._heartbeat = heartbeat
self._heartbeat_cb = None
if heartbeat is not None:
self._pong_heartbeat = heartbeat / 2.0
self._pong_response_cb = None
self._compress = compress
self._max_msg_size = max_msg_size
def _cancel_heartbeat(self) -> None:
if self._pong_response_cb is not None:
self._pong_response_cb.cancel()
self._pong_response_cb = None
if self._heartbeat_cb is not None:
self._heartbeat_cb.cancel()
self._heartbeat_cb = None
def _reset_heartbeat(self) -> None:
self._cancel_heartbeat()
if self._heartbeat is not None:
self._heartbeat_cb = call_later(
self._send_heartbeat, self._heartbeat, self._loop)
def _send_heartbeat(self) -> None:
if self._heartbeat is not None and not self._closed:
# fire-and-forget a task is not perfect but maybe ok for
# sending ping. Otherwise we need a long-living heartbeat
# task in the class.
self._loop.create_task(self._writer.ping()) # type: ignore
if self._pong_response_cb is not None:
self._pong_response_cb.cancel()
self._pong_response_cb = call_later(
self._pong_not_received, self._pong_heartbeat, self._loop)
def _pong_not_received(self) -> None:
if self._req is not None and self._req.transport is not None:
self._closed = True
self._close_code = 1006
self._exception = asyncio.TimeoutError()
self._req.transport.close()
async def prepare(self, request: BaseRequest) -> AbstractStreamWriter:
# make pre-check to don't hide it by do_handshake() exceptions
if self._payload_writer is not None:
return self._payload_writer
protocol, writer = self._pre_start(request)
payload_writer = await super().prepare(request)
assert payload_writer is not None
self._post_start(request, protocol, writer)
await payload_writer.drain()
return payload_writer
def _handshake(self, request: BaseRequest) -> Tuple['CIMultiDict[str]',
str,
bool,
bool]:
headers = request.headers
if 'websocket' != headers.get(hdrs.UPGRADE, '').lower().strip():
raise HTTPBadRequest(
text=('No WebSocket UPGRADE hdr: {}\n Can '
'"Upgrade" only to "WebSocket".')
.format(headers.get(hdrs.UPGRADE)))
if 'upgrade' not in headers.get(hdrs.CONNECTION, '').lower():
raise HTTPBadRequest(
text='No CONNECTION upgrade hdr: {}'.format(
headers.get(hdrs.CONNECTION)))
# find common sub-protocol between client and server
protocol = None
if hdrs.SEC_WEBSOCKET_PROTOCOL in headers:
req_protocols = [str(proto.strip()) for proto in
headers[hdrs.SEC_WEBSOCKET_PROTOCOL].split(',')]
for proto in req_protocols:
if proto in self._protocols:
protocol = proto
break
else:
# No overlap found: Return no protocol as per spec
ws_logger.warning(
'Client protocols %r don’t overlap server-known ones %r',
req_protocols, self._protocols)
# check supported version
version = headers.get(hdrs.SEC_WEBSOCKET_VERSION, '')
if version not in ('13', '8', '7'):
raise HTTPBadRequest(
text='Unsupported version: {}'.format(version))
# check client handshake for validity
key = headers.get(hdrs.SEC_WEBSOCKET_KEY)
try:
if not key or len(base64.b64decode(key)) != 16:
raise HTTPBadRequest(
text='Handshake error: {!r}'.format(key))
except binascii.Error:
raise HTTPBadRequest(
text='Handshake error: {!r}'.format(key)) from None
accept_val = base64.b64encode(
hashlib.sha1(key.encode() + WS_KEY).digest()).decode()
response_headers = CIMultiDict( # type: ignore
{hdrs.UPGRADE: 'websocket',
hdrs.CONNECTION: 'upgrade',
hdrs.SEC_WEBSOCKET_ACCEPT: accept_val})
notakeover = False
compress = 0
if self._compress:
extensions = headers.get(hdrs.SEC_WEBSOCKET_EXTENSIONS)
# Server side always get return with no exception.
# If something happened, just drop compress extension
compress, notakeover = ws_ext_parse(extensions, isserver=True)
if compress:
enabledext = ws_ext_gen(compress=compress, isserver=True,
server_notakeover=notakeover)
response_headers[hdrs.SEC_WEBSOCKET_EXTENSIONS] = enabledext
if protocol:
response_headers[hdrs.SEC_WEBSOCKET_PROTOCOL] = protocol
return (response_headers, # type: ignore
protocol,
compress,
notakeover)
def _pre_start(self, request: BaseRequest) -> Tuple[str, WebSocketWriter]:
self._loop = request._loop
headers, protocol, compress, notakeover = self._handshake(
request)
self._reset_heartbeat()
self.set_status(101)
self.headers.update(headers)
self.force_close()
self._compress = compress
transport = request._protocol.transport
assert transport is not None
writer = WebSocketWriter(request._protocol,
transport,
compress=compress,
notakeover=notakeover)
return protocol, writer
def _post_start(self, request: BaseRequest,
protocol: str, writer: WebSocketWriter) -> None:
self._ws_protocol = protocol
self._writer = writer
loop = self._loop
assert loop is not None
self._reader = FlowControlDataQueue(
request._protocol, limit=2 ** 16, loop=loop)
request.protocol.set_parser(WebSocketReader(
self._reader, self._max_msg_size, compress=self._compress))
# disable HTTP keepalive for WebSocket
request.protocol.keep_alive(False)
def can_prepare(self, request: BaseRequest) -> WebSocketReady:
if self._writer is not None:
raise RuntimeError('Already started')
try:
_, protocol, _, _ = self._handshake(request)
except HTTPException:
return WebSocketReady(False, None)
else:
return WebSocketReady(True, protocol)
@property
def closed(self) -> bool:
return self._closed
@property
def close_code(self) -> Optional[int]:
return self._close_code
@property
def ws_protocol(self) -> Optional[str]:
return self._ws_protocol
@property
def compress(self) -> bool:
return self._compress
def exception(self) -> Optional[BaseException]:
return self._exception
async def ping(self, message: bytes=b'') -> None:
if self._writer is None:
raise RuntimeError('Call .prepare() first')
await self._writer.ping(message)
async def pong(self, message: bytes=b'') -> None:
# unsolicited pong
if self._writer is None:
raise RuntimeError('Call .prepare() first')
await self._writer.pong(message)
async def send_str(self, data: str, compress: Optional[bool]=None) -> None:
if self._writer is None:
raise RuntimeError('Call .prepare() first')
if not isinstance(data, str):
raise TypeError('data argument must be str (%r)' % type(data))
await self._writer.send(data, binary=False, compress=compress)
async def send_bytes(self, data: bytes,
compress: Optional[bool]=None) -> None:
if self._writer is None:
raise RuntimeError('Call .prepare() first')
if not isinstance(data, (bytes, bytearray, memoryview)):
raise TypeError('data argument must be byte-ish (%r)' %
type(data))
await self._writer.send(data, binary=True, compress=compress)
async def send_json(self, data: Any, compress: Optional[bool]=None, *,
dumps: JSONEncoder=json.dumps) -> None:
await self.send_str(dumps(data), compress=compress)
async def write_eof(self) -> None: # type: ignore
if self._eof_sent:
return
if self._payload_writer is None:
raise RuntimeError("Response has not been started")
await self.close()
self._eof_sent = True
async def close(self, *, code: int=1000, message: bytes=b'') -> bool:
if self._writer is None:
raise RuntimeError('Call .prepare() first')
self._cancel_heartbeat()
reader = self._reader
assert reader is not None
# we need to break `receive()` cycle first,
# `close()` may be called from different task
if self._waiting is not None and not self._closed:
reader.feed_data(WS_CLOSING_MESSAGE, 0)
await self._waiting
if not self._closed:
self._closed = True
try:
await self._writer.close(code, message)
writer = self._payload_writer
assert writer is not None
await writer.drain()
except (asyncio.CancelledError, asyncio.TimeoutError):
self._close_code = 1006
raise
except Exception as exc:
self._close_code = 1006
self._exception = exc
return True
if self._closing:
return True
reader = self._reader
assert reader is not None
try:
with async_timeout.timeout(self._timeout, loop=self._loop):
msg = await reader.read()
except asyncio.CancelledError:
self._close_code = 1006
raise
except Exception as exc:
self._close_code = 1006
self._exception = exc
return True
if msg.type == WSMsgType.CLOSE:
self._close_code = msg.data
return True
self._close_code = 1006
self._exception = asyncio.TimeoutError()
return True
else:
return False
async def receive(self, timeout: Optional[float]=None) -> WSMessage:
if self._reader is None:
raise RuntimeError('Call .prepare() first')
loop = self._loop
assert loop is not None
while True:
if self._waiting is not None:
raise RuntimeError(
'Concurrent call to receive() is not allowed')
if self._closed:
self._conn_lost += 1
if self._conn_lost >= THRESHOLD_CONNLOST_ACCESS:
raise RuntimeError('WebSocket connection is closed.')
return WS_CLOSED_MESSAGE
elif self._closing:
return WS_CLOSING_MESSAGE
try:
self._waiting = loop.create_future()
try:
with async_timeout.timeout(
timeout or self._receive_timeout, loop=self._loop):
msg = await self._reader.read()
self._reset_heartbeat()
finally:
waiter = self._waiting
set_result(waiter, True)
self._waiting = None
except (asyncio.CancelledError, asyncio.TimeoutError):
self._close_code = 1006
raise
except EofStream:
self._close_code = 1000
await self.close()
return WSMessage(WSMsgType.CLOSED, None, None)
except WebSocketError as exc:
self._close_code = exc.code
await self.close(code=exc.code)
return WSMessage(WSMsgType.ERROR, exc, None)
except Exception as exc:
self._exception = exc
self._closing = True
self._close_code = 1006
await self.close()
return WSMessage(WSMsgType.ERROR, exc, None)
if msg.type == WSMsgType.CLOSE:
self._closing = True
self._close_code = msg.data
if not self._closed and self._autoclose:
await self.close()
elif msg.type == WSMsgType.CLOSING:
self._closing = True
elif msg.type == WSMsgType.PING and self._autoping:
await self.pong(msg.data)
continue
elif msg.type == WSMsgType.PONG and self._autoping:
continue
return msg
async def receive_str(self, *, timeout: Optional[float]=None) -> str:
msg = await self.receive(timeout)
if msg.type != WSMsgType.TEXT:
raise TypeError(
"Received message {}:{!r} is not WSMsgType.TEXT".format(
msg.type, msg.data))
return msg.data
async def receive_bytes(self, *, timeout: Optional[float]=None) -> bytes:
msg = await self.receive(timeout)
if msg.type != WSMsgType.BINARY:
raise TypeError(
"Received message {}:{!r} is not bytes".format(msg.type,
msg.data))
return msg.data
async def receive_json(self, *, loads: JSONDecoder=json.loads,
timeout: Optional[float]=None) -> Any:
data = await self.receive_str(timeout=timeout)
return loads(data)
async def write(self, data: bytes) -> None:
raise RuntimeError("Cannot call .write() for websocket")
def __aiter__(self) -> 'WebSocketResponse':
return self
async def __anext__(self) -> WSMessage:
msg = await self.receive()
if msg.type in (WSMsgType.CLOSE,
WSMsgType.CLOSING,
WSMsgType.CLOSED):
raise StopAsyncIteration # NOQA
return msg

242
matteo_env/Lib/site-packages/aiohttp/worker.py Normal file
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"""Async gunicorn worker for aiohttp.web"""
import asyncio
import os
import re
import signal
import sys
from types import FrameType
from typing import Any, Awaitable, Callable, Optional, Union # noqa
from gunicorn.config import AccessLogFormat as GunicornAccessLogFormat
from gunicorn.workers import base
from aiohttp import web
from .helpers import set_result
from .web_app import Application
from .web_log import AccessLogger
try:
import ssl
SSLContext = ssl.SSLContext # noqa
except ImportError: # pragma: no cover
ssl = None # type: ignore
SSLContext = object # type: ignore
__all__ = ('GunicornWebWorker',
'GunicornUVLoopWebWorker',
'GunicornTokioWebWorker')
class GunicornWebWorker(base.Worker):
DEFAULT_AIOHTTP_LOG_FORMAT = AccessLogger.LOG_FORMAT
DEFAULT_GUNICORN_LOG_FORMAT = GunicornAccessLogFormat.default
def __init__(self, *args: Any, **kw: Any) -> None: # pragma: no cover
super().__init__(*args, **kw)
self._task = None # type: Optional[asyncio.Task[None]]
self.exit_code = 0
self._notify_waiter = None # type: Optional[asyncio.Future[bool]]
def init_process(self) -> None:
# create new event_loop after fork
asyncio.get_event_loop().close()
self.loop = asyncio.new_event_loop()
asyncio.set_event_loop(self.loop)
super().init_process()
def run(self) -> None:
self._task = self.loop.create_task(self._run())
try: # ignore all finalization problems
self.loop.run_until_complete(self._task)
except Exception:
self.log.exception("Exception in gunicorn worker")
if sys.version_info >= (3, 6):
self.loop.run_until_complete(self.loop.shutdown_asyncgens())
self.loop.close()
sys.exit(self.exit_code)
async def _run(self) -> None:
if isinstance(self.wsgi, Application):
app = self.wsgi
elif asyncio.iscoroutinefunction(self.wsgi):
app = await self.wsgi()
else:
raise RuntimeError("wsgi app should be either Application or "
"async function returning Application, got {}"
.format(self.wsgi))
access_log = self.log.access_log if self.cfg.accesslog else None
runner = web.AppRunner(app,
logger=self.log,
keepalive_timeout=self.cfg.keepalive,
access_log=access_log,
access_log_format=self._get_valid_log_format(
self.cfg.access_log_format))
await runner.setup()
ctx = self._create_ssl_context(self.cfg) if self.cfg.is_ssl else None
runner = runner
assert runner is not None
server = runner.server
assert server is not None
for sock in self.sockets:
site = web.SockSite(
runner, sock, ssl_context=ctx,
shutdown_timeout=self.cfg.graceful_timeout / 100 * 95)
await site.start()
# If our parent changed then we shut down.
pid = os.getpid()
try:
while self.alive: # type: ignore
self.notify()
cnt = server.requests_count
if self.cfg.max_requests and cnt > self.cfg.max_requests:
self.alive = False
self.log.info("Max requests, shutting down: %s", self)
elif pid == os.getpid() and self.ppid != os.getppid():
self.alive = False
self.log.info("Parent changed, shutting down: %s", self)
else:
await self._wait_next_notify()
except BaseException:
pass
await runner.cleanup()
def _wait_next_notify(self) -> 'asyncio.Future[bool]':
self._notify_waiter_done()
loop = self.loop
assert loop is not None
self._notify_waiter = waiter = loop.create_future()
self.loop.call_later(1.0, self._notify_waiter_done, waiter)
return waiter
def _notify_waiter_done(self, waiter: 'asyncio.Future[bool]'=None) -> None:
if waiter is None:
waiter = self._notify_waiter
if waiter is not None:
set_result(waiter, True)
if waiter is self._notify_waiter:
self._notify_waiter = None
def init_signals(self) -> None:
# Set up signals through the event loop API.
self.loop.add_signal_handler(signal.SIGQUIT, self.handle_quit,
signal.SIGQUIT, None)
self.loop.add_signal_handler(signal.SIGTERM, self.handle_exit,
signal.SIGTERM, None)
self.loop.add_signal_handler(signal.SIGINT, self.handle_quit,
signal.SIGINT, None)
self.loop.add_signal_handler(signal.SIGWINCH, self.handle_winch,
signal.SIGWINCH, None)
self.loop.add_signal_handler(signal.SIGUSR1, self.handle_usr1,
signal.SIGUSR1, None)
self.loop.add_signal_handler(signal.SIGABRT, self.handle_abort,
signal.SIGABRT, None)
# Don't let SIGTERM and SIGUSR1 disturb active requests
# by interrupting system calls
signal.siginterrupt(signal.SIGTERM, False)
signal.siginterrupt(signal.SIGUSR1, False)
def handle_quit(self, sig: int, frame: FrameType) -> None:
self.alive = False
# worker_int callback
self.cfg.worker_int(self)
# wakeup closing process
self._notify_waiter_done()
def handle_abort(self, sig: int, frame: FrameType) -> None:
self.alive = False
self.exit_code = 1
self.cfg.worker_abort(self)
sys.exit(1)
@staticmethod
def _create_ssl_context(cfg: Any) -> 'SSLContext':
""" Creates SSLContext instance for usage in asyncio.create_server.
See ssl.SSLSocket.__init__ for more details.
"""
if ssl is None: # pragma: no cover
raise RuntimeError('SSL is not supported.')
ctx = ssl.SSLContext(cfg.ssl_version)
ctx.load_cert_chain(cfg.certfile, cfg.keyfile)
ctx.verify_mode = cfg.cert_reqs
if cfg.ca_certs:
ctx.load_verify_locations(cfg.ca_certs)
if cfg.ciphers:
ctx.set_ciphers(cfg.ciphers)
return ctx
def _get_valid_log_format(self, source_format: str) -> str:
if source_format == self.DEFAULT_GUNICORN_LOG_FORMAT:
return self.DEFAULT_AIOHTTP_LOG_FORMAT
elif re.search(r'%\([^\)]+\)', source_format):
raise ValueError(
"Gunicorn's style options in form of `%(name)s` are not "
"supported for the log formatting. Please use aiohttp's "
"format specification to configure access log formatting: "
"http://docs.aiohttp.org/en/stable/logging.html"
"#format-specification"
)
else:
return source_format
class GunicornUVLoopWebWorker(GunicornWebWorker):
def init_process(self) -> None:
import uvloop
# Close any existing event loop before setting a
# new policy.
asyncio.get_event_loop().close()
# Setup uvloop policy, so that every
# asyncio.get_event_loop() will create an instance
# of uvloop event loop.
asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
super().init_process()
class GunicornTokioWebWorker(GunicornWebWorker):
def init_process(self) -> None: # pragma: no cover
import tokio
# Close any existing event loop before setting a
# new policy.
asyncio.get_event_loop().close()
# Setup tokio policy, so that every
# asyncio.get_event_loop() will create an instance
# of tokio event loop.
asyncio.set_event_loop_policy(tokio.EventLoopPolicy())
super().init_process()

1
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pip

201
matteo_env/Lib/site-packages/async_timeout-3.0.1.dist-info/LICENSE Normal file
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165
matteo_env/Lib/site-packages/async_timeout-3.0.1.dist-info/METADATA Normal file
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Metadata-Version: 2.1
Name: async-timeout
Version: 3.0.1
Summary: Timeout context manager for asyncio programs
Home-page: https://github.com/aio-libs/async_timeout/
Author: Andrew Svetlov
Author-email: andrew.svetlov@gmail.com
License: Apache 2
Platform: UNKNOWN
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Intended Audience :: Developers
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Topic :: Internet :: WWW/HTTP
Classifier: Framework :: AsyncIO
Requires-Python: >=3.5.3
async-timeout
=============
.. image:: https://travis-ci.org/aio-libs/async-timeout.svg?branch=master
:target: https://travis-ci.org/aio-libs/async-timeout
.. image:: https://codecov.io/gh/aio-libs/async-timeout/branch/master/graph/badge.svg
:target: https://codecov.io/gh/aio-libs/async-timeout
.. image:: https://img.shields.io/pypi/v/async-timeout.svg
:target: https://pypi.python.org/pypi/async-timeout
.. image:: https://badges.gitter.im/Join%20Chat.svg
:target: https://gitter.im/aio-libs/Lobby
:alt: Chat on Gitter
asyncio-compatible timeout context manager.
Usage example
-------------
The context manager is useful in cases when you want to apply timeout
logic around block of code or in cases when ``asyncio.wait_for()`` is
not suitable. Also it's much faster than ``asyncio.wait_for()``
because ``timeout`` doesn't create a new task.
The ``timeout(timeout, *, loop=None)`` call returns a context manager
that cancels a block on *timeout* expiring::
async with timeout(1.5):
await inner()
1. If ``inner()`` is executed faster than in ``1.5`` seconds nothing
happens.
2. Otherwise ``inner()`` is cancelled internally by sending
``asyncio.CancelledError`` into but ``asyncio.TimeoutError`` is
raised outside of context manager scope.
*timeout* parameter could be ``None`` for skipping timeout functionality.
Context manager has ``.expired`` property for check if timeout happens
exactly in context manager::
async with timeout(1.5) as cm:
await inner()
print(cm.expired)
The property is ``True`` if ``inner()`` execution is cancelled by
timeout context manager.
If ``inner()`` call explicitly raises ``TimeoutError`` ``cm.expired``
is ``False``.
Installation
------------
::
$ pip install async-timeout
The library is Python 3 only!
Authors and License
-------------------
The module is written by Andrew Svetlov.
It's *Apache 2* licensed and freely available.
CHANGES
=======
3.0.1 (2018-10-09)
------------------
- More aggressive typing (#48)
3.0.0 (2018-05-05)
------------------
- Drop Python 3.4, the minimal supported version is Python 3.5.3
- Provide type annotations
2.0.1 (2018-03-13)
------------------
* Fix ``PendingDeprecationWarning`` on Python 3.7 (#33)
2.0.0 (2017-10-09)
------------------
* Changed `timeout <= 0` behaviour
* Backward incompatibility change, prior this version `0` was
shortcut for `None`
* when timeout <= 0 `TimeoutError` raised faster
1.4.0 (2017-09-09)
------------------
* Implement `remaining` property (#20)
* If timeout is not started yet or started unconstrained:
`remaining` is `None`
* If timeout is expired: `remaining` is `0.0`
* All others: roughly amount of time before `TimeoutError` is triggered
1.3.0 (2017-08-23)
------------------
* Don't suppress nested exception on timeout. Exception context points
on cancelled line with suspended `await` (#13)
* Introduce `.timeout` property (#16)
* Add methods for using as async context manager (#9)
1.2.1 (2017-05-02)
------------------
* Support unpublished event loop's "current_task" api.
1.2.0 (2017-03-11)
------------------
* Extra check on context manager exit
* 0 is no-op timeout
1.1.0 (2016-10-20)
------------------
* Rename to `async-timeout`
1.0.0 (2016-09-09)
------------------
* The first release.

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async_timeout-3.0.1.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
async_timeout-3.0.1.dist-info/LICENSE,sha256=tAkwu8-AdEyGxGoSvJ2gVmQdcicWw3j1ZZueVV74M-E,11357
async_timeout-3.0.1.dist-info/METADATA,sha256=_3ByJ8L0-cU5wWu75_Rl8n0ZkbSCgW15fMAu_DzwTm0,4013
async_timeout-3.0.1.dist-info/RECORD,,
async_timeout-3.0.1.dist-info/WHEEL,sha256=-ZFxwj8mZJPIVcZGLrsQ8UGRcxVAOExzPLVBGR7u7bE,92
async_timeout-3.0.1.dist-info/top_level.txt,sha256=9oM4e7Twq8iD_7_Q3Mz0E6GPIB6vJvRFo-UBwUQtBDU,14
async_timeout/__init__.py,sha256=mGvWOoRqLtScEU3kmzqtTSH7EQsHvu8zhgHxOTXCn7c,3654
async_timeout/__pycache__/__init__.cpython-38.pyc,,
async_timeout/py.typed,sha256=9LJP7QJ0oxYYrBtmXuFirzMbS3D9_3Tz-d3tyUtNp0U,11

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Wheel-Version: 1.0
Generator: bdist_wheel (0.32.1)
Root-Is-Purelib: true
Tag: py3-none-any

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async_timeout

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import asyncio
import sys
from types import TracebackType
from typing import Optional, Type, Any # noqa
__version__ = '3.0.1'
PY_37 = sys.version_info >= (3, 7)
class timeout:
"""timeout context manager.
Useful in cases when you want to apply timeout logic around block
of code or in cases when asyncio.wait_for is not suitable. For example:
>>> with timeout(0.001):
... async with aiohttp.get('https://github.com') as r:
... await r.text()
timeout - value in seconds or None to disable timeout logic
loop - asyncio compatible event loop
"""
def __init__(self, timeout: Optional[float],
*, loop: Optional[asyncio.AbstractEventLoop] = None) -> None:
self._timeout = timeout
if loop is None:
loop = asyncio.get_event_loop()
self._loop = loop
self._task = None # type: Optional[asyncio.Task[Any]]
self._cancelled = False
self._cancel_handler = None # type: Optional[asyncio.Handle]
self._cancel_at = None # type: Optional[float]
def __enter__(self) -> 'timeout':
return self._do_enter()
def __exit__(self,
exc_type: Type[BaseException],
exc_val: BaseException,
exc_tb: TracebackType) -> Optional[bool]:
self._do_exit(exc_type)
return None
async def __aenter__(self) -> 'timeout':
return self._do_enter()
async def __aexit__(self,
exc_type: Type[BaseException],
exc_val: BaseException,
exc_tb: TracebackType) -> None:
self._do_exit(exc_type)
@property
def expired(self) -> bool:
return self._cancelled
@property
def remaining(self) -> Optional[float]:
if self._cancel_at is not None:
return max(self._cancel_at - self._loop.time(), 0.0)
else:
return None
def _do_enter(self) -> 'timeout':
# Support Tornado 5- without timeout
# Details: https://github.com/python/asyncio/issues/392
if self._timeout is None:
return self
self._task = current_task(self._loop)
if self._task is None:
raise RuntimeError('Timeout context manager should be used '
'inside a task')
if self._timeout <= 0:
self._loop.call_soon(self._cancel_task)
return self
self._cancel_at = self._loop.time() + self._timeout
self._cancel_handler = self._loop.call_at(
self._cancel_at, self._cancel_task)
return self
def _do_exit(self, exc_type: Type[BaseException]) -> None:
if exc_type is asyncio.CancelledError and self._cancelled:
self._cancel_handler = None
self._task = None
raise asyncio.TimeoutError
if self._timeout is not None and self._cancel_handler is not None:
self._cancel_handler.cancel()
self._cancel_handler = None
self._task = None
return None
def _cancel_task(self) -> None:
if self._task is not None:
self._task.cancel()
self._cancelled = True
def current_task(loop: asyncio.AbstractEventLoop) -> 'asyncio.Task[Any]':
if PY_37:
task = asyncio.current_task(loop=loop) # type: ignore
else:
task = asyncio.Task.current_task(loop=loop)
if task is None:
# this should be removed, tokio must use register_task and family API
if hasattr(loop, 'current_task'):
task = loop.current_task() # type: ignore
return task

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Placeholder

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from __future__ import absolute_import, division, print_function
import sys
from functools import partial
from . import converters, exceptions, filters, setters, validators
from ._config import get_run_validators, set_run_validators
from ._funcs import asdict, assoc, astuple, evolve, has, resolve_types
from ._make import (
NOTHING,
Attribute,
Factory,
attrib,
attrs,
fields,
fields_dict,
make_class,
validate,
)
from ._version_info import VersionInfo
__version__ = "20.3.0"
__version_info__ = VersionInfo._from_version_string(__version__)
__title__ = "attrs"
__description__ = "Classes Without Boilerplate"
__url__ = "https://www.attrs.org/"
__uri__ = __url__
__doc__ = __description__ + " <" + __uri__ + ">"
__author__ = "Hynek Schlawack"
__email__ = "hs@ox.cx"
__license__ = "MIT"
__copyright__ = "Copyright (c) 2015 Hynek Schlawack"
s = attributes = attrs
ib = attr = attrib
dataclass = partial(attrs, auto_attribs=True) # happy Easter ;)
__all__ = [
"Attribute",
"Factory",
"NOTHING",
"asdict",
"assoc",
"astuple",
"attr",
"attrib",
"attributes",
"attrs",
"converters",
"evolve",
"exceptions",
"fields",
"fields_dict",
"filters",
"get_run_validators",
"has",
"ib",
"make_class",
"resolve_types",
"s",
"set_run_validators",
"setters",
"validate",
"validators",
]
if sys.version_info[:2] >= (3, 6):
from ._next_gen import define, field, frozen, mutable
__all__.extend((define, field, frozen, mutable))

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from typing import (
Any,
Callable,
Dict,
Generic,
List,
Optional,
Sequence,
Mapping,
Tuple,
Type,
TypeVar,
Union,
overload,
)
# `import X as X` is required to make these public
from . import exceptions as exceptions
from . import filters as filters
from . import converters as converters
from . import setters as setters
from . import validators as validators
from ._version_info import VersionInfo
__version__: str
__version_info__: VersionInfo
__title__: str
__description__: str
__url__: str
__uri__: str
__author__: str
__email__: str
__license__: str
__copyright__: str
_T = TypeVar("_T")
_C = TypeVar("_C", bound=type)
_ValidatorType = Callable[[Any, Attribute[_T], _T], Any]
_ConverterType = Callable[[Any], Any]
_FilterType = Callable[[Attribute[_T], _T], bool]
_ReprType = Callable[[Any], str]
_ReprArgType = Union[bool, _ReprType]
_OnSetAttrType = Callable[[Any, Attribute[Any], Any], Any]
_OnSetAttrArgType = Union[
_OnSetAttrType, List[_OnSetAttrType], setters._NoOpType
]
_FieldTransformer = Callable[[type, List[Attribute]], List[Attribute]]
# FIXME: in reality, if multiple validators are passed they must be in a list
# or tuple, but those are invariant and so would prevent subtypes of
# _ValidatorType from working when passed in a list or tuple.
_ValidatorArgType = Union[_ValidatorType[_T], Sequence[_ValidatorType[_T]]]
# _make --
NOTHING: object
# NOTE: Factory lies about its return type to make this possible:
# `x: List[int] # = Factory(list)`
# Work around mypy issue #4554 in the common case by using an overload.
@overload
def Factory(factory: Callable[[], _T]) -> _T: ...
@overload
def Factory(
factory: Union[Callable[[Any], _T], Callable[[], _T]],
takes_self: bool = ...,
) -> _T: ...
class Attribute(Generic[_T]):
name: str
default: Optional[_T]
validator: Optional[_ValidatorType[_T]]
repr: _ReprArgType
cmp: bool
eq: bool
order: bool
hash: Optional[bool]
init: bool
converter: Optional[_ConverterType]
metadata: Dict[Any, Any]
type: Optional[Type[_T]]
kw_only: bool
on_setattr: _OnSetAttrType
# NOTE: We had several choices for the annotation to use for type arg:
# 1) Type[_T]
# - Pros: Handles simple cases correctly
# - Cons: Might produce less informative errors in the case of conflicting
# TypeVars e.g. `attr.ib(default='bad', type=int)`
# 2) Callable[..., _T]
# - Pros: Better error messages than #1 for conflicting TypeVars
# - Cons: Terrible error messages for validator checks.
# e.g. attr.ib(type=int, validator=validate_str)
# -> error: Cannot infer function type argument
# 3) type (and do all of the work in the mypy plugin)
# - Pros: Simple here, and we could customize the plugin with our own errors.
# - Cons: Would need to write mypy plugin code to handle all the cases.
# We chose option #1.
# `attr` lies about its return type to make the following possible:
# attr() -> Any
# attr(8) -> int
# attr(validator=<some callable>) -> Whatever the callable expects.
# This makes this type of assignments possible:
# x: int = attr(8)
#
# This form catches explicit None or no default but with no other arguments
# returns Any.
@overload
def attrib(
default: None = ...,
validator: None = ...,
repr: _ReprArgType = ...,
cmp: Optional[bool] = ...,
hash: Optional[bool] = ...,
init: bool = ...,
metadata: Optional[Mapping[Any, Any]] = ...,
type: None = ...,
converter: None = ...,
factory: None = ...,
kw_only: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
) -> Any: ...
# This form catches an explicit None or no default and infers the type from the
# other arguments.
@overload
def attrib(
default: None = ...,
validator: Optional[_ValidatorArgType[_T]] = ...,
repr: _ReprArgType = ...,
cmp: Optional[bool] = ...,
hash: Optional[bool] = ...,
init: bool = ...,
metadata: Optional[Mapping[Any, Any]] = ...,
type: Optional[Type[_T]] = ...,
converter: Optional[_ConverterType] = ...,
factory: Optional[Callable[[], _T]] = ...,
kw_only: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
) -> _T: ...
# This form catches an explicit default argument.
@overload
def attrib(
default: _T,
validator: Optional[_ValidatorArgType[_T]] = ...,
repr: _ReprArgType = ...,
cmp: Optional[bool] = ...,
hash: Optional[bool] = ...,
init: bool = ...,
metadata: Optional[Mapping[Any, Any]] = ...,
type: Optional[Type[_T]] = ...,
converter: Optional[_ConverterType] = ...,
factory: Optional[Callable[[], _T]] = ...,
kw_only: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
) -> _T: ...
# This form covers type=non-Type: e.g. forward references (str), Any
@overload
def attrib(
default: Optional[_T] = ...,
validator: Optional[_ValidatorArgType[_T]] = ...,
repr: _ReprArgType = ...,
cmp: Optional[bool] = ...,
hash: Optional[bool] = ...,
init: bool = ...,
metadata: Optional[Mapping[Any, Any]] = ...,
type: object = ...,
converter: Optional[_ConverterType] = ...,
factory: Optional[Callable[[], _T]] = ...,
kw_only: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
) -> Any: ...
@overload
def field(
*,
default: None = ...,
validator: None = ...,
repr: _ReprArgType = ...,
hash: Optional[bool] = ...,
init: bool = ...,
metadata: Optional[Mapping[Any, Any]] = ...,
converter: None = ...,
factory: None = ...,
kw_only: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
) -> Any: ...
# This form catches an explicit None or no default and infers the type from the
# other arguments.
@overload
def field(
*,
default: None = ...,
validator: Optional[_ValidatorArgType[_T]] = ...,
repr: _ReprArgType = ...,
hash: Optional[bool] = ...,
init: bool = ...,
metadata: Optional[Mapping[Any, Any]] = ...,
converter: Optional[_ConverterType] = ...,
factory: Optional[Callable[[], _T]] = ...,
kw_only: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
) -> _T: ...
# This form catches an explicit default argument.
@overload
def field(
*,
default: _T,
validator: Optional[_ValidatorArgType[_T]] = ...,
repr: _ReprArgType = ...,
hash: Optional[bool] = ...,
init: bool = ...,
metadata: Optional[Mapping[Any, Any]] = ...,
converter: Optional[_ConverterType] = ...,
factory: Optional[Callable[[], _T]] = ...,
kw_only: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
) -> _T: ...
# This form covers type=non-Type: e.g. forward references (str), Any
@overload
def field(
*,
default: Optional[_T] = ...,
validator: Optional[_ValidatorArgType[_T]] = ...,
repr: _ReprArgType = ...,
hash: Optional[bool] = ...,
init: bool = ...,
metadata: Optional[Mapping[Any, Any]] = ...,
converter: Optional[_ConverterType] = ...,
factory: Optional[Callable[[], _T]] = ...,
kw_only: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
) -> Any: ...
@overload
def attrs(
maybe_cls: _C,
these: Optional[Dict[str, Any]] = ...,
repr_ns: Optional[str] = ...,
repr: bool = ...,
cmp: Optional[bool] = ...,
hash: Optional[bool] = ...,
init: bool = ...,
slots: bool = ...,
frozen: bool = ...,
weakref_slot: bool = ...,
str: bool = ...,
auto_attribs: bool = ...,
kw_only: bool = ...,
cache_hash: bool = ...,
auto_exc: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
auto_detect: bool = ...,
collect_by_mro: bool = ...,
getstate_setstate: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
field_transformer: Optional[_FieldTransformer] = ...,
) -> _C: ...
@overload
def attrs(
maybe_cls: None = ...,
these: Optional[Dict[str, Any]] = ...,
repr_ns: Optional[str] = ...,
repr: bool = ...,
cmp: Optional[bool] = ...,
hash: Optional[bool] = ...,
init: bool = ...,
slots: bool = ...,
frozen: bool = ...,
weakref_slot: bool = ...,
str: bool = ...,
auto_attribs: bool = ...,
kw_only: bool = ...,
cache_hash: bool = ...,
auto_exc: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
auto_detect: bool = ...,
collect_by_mro: bool = ...,
getstate_setstate: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
field_transformer: Optional[_FieldTransformer] = ...,
) -> Callable[[_C], _C]: ...
@overload
def define(
maybe_cls: _C,
*,
these: Optional[Dict[str, Any]] = ...,
repr: bool = ...,
hash: Optional[bool] = ...,
init: bool = ...,
slots: bool = ...,
frozen: bool = ...,
weakref_slot: bool = ...,
str: bool = ...,
auto_attribs: bool = ...,
kw_only: bool = ...,
cache_hash: bool = ...,
auto_exc: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
auto_detect: bool = ...,
getstate_setstate: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
field_transformer: Optional[_FieldTransformer] = ...,
) -> _C: ...
@overload
def define(
maybe_cls: None = ...,
*,
these: Optional[Dict[str, Any]] = ...,
repr: bool = ...,
hash: Optional[bool] = ...,
init: bool = ...,
slots: bool = ...,
frozen: bool = ...,
weakref_slot: bool = ...,
str: bool = ...,
auto_attribs: bool = ...,
kw_only: bool = ...,
cache_hash: bool = ...,
auto_exc: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
auto_detect: bool = ...,
getstate_setstate: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
field_transformer: Optional[_FieldTransformer] = ...,
) -> Callable[[_C], _C]: ...
mutable = define
frozen = define # they differ only in their defaults
# TODO: add support for returning NamedTuple from the mypy plugin
class _Fields(Tuple[Attribute[Any], ...]):
def __getattr__(self, name: str) -> Attribute[Any]: ...
def fields(cls: type) -> _Fields: ...
def fields_dict(cls: type) -> Dict[str, Attribute[Any]]: ...
def validate(inst: Any) -> None: ...
def resolve_types(
cls: _C,
globalns: Optional[Dict[str, Any]] = ...,
localns: Optional[Dict[str, Any]] = ...,
) -> _C: ...
# TODO: add support for returning a proper attrs class from the mypy plugin
# we use Any instead of _CountingAttr so that e.g. `make_class('Foo',
# [attr.ib()])` is valid
def make_class(
name: str,
attrs: Union[List[str], Tuple[str, ...], Dict[str, Any]],
bases: Tuple[type, ...] = ...,
repr_ns: Optional[str] = ...,
repr: bool = ...,
cmp: Optional[bool] = ...,
hash: Optional[bool] = ...,
init: bool = ...,
slots: bool = ...,
frozen: bool = ...,
weakref_slot: bool = ...,
str: bool = ...,
auto_attribs: bool = ...,
kw_only: bool = ...,
cache_hash: bool = ...,
auto_exc: bool = ...,
eq: Optional[bool] = ...,
order: Optional[bool] = ...,
collect_by_mro: bool = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
field_transformer: Optional[_FieldTransformer] = ...,
) -> type: ...
# _funcs --
# TODO: add support for returning TypedDict from the mypy plugin
# FIXME: asdict/astuple do not honor their factory args. Waiting on one of
# these:
# https://github.com/python/mypy/issues/4236
# https://github.com/python/typing/issues/253
def asdict(
inst: Any,
recurse: bool = ...,
filter: Optional[_FilterType[Any]] = ...,
dict_factory: Type[Mapping[Any, Any]] = ...,
retain_collection_types: bool = ...,
value_serializer: Optional[Callable[[type, Attribute, Any], Any]] = ...,
) -> Dict[str, Any]: ...
# TODO: add support for returning NamedTuple from the mypy plugin
def astuple(
inst: Any,
recurse: bool = ...,
filter: Optional[_FilterType[Any]] = ...,
tuple_factory: Type[Sequence[Any]] = ...,
retain_collection_types: bool = ...,
) -> Tuple[Any, ...]: ...
def has(cls: type) -> bool: ...
def assoc(inst: _T, **changes: Any) -> _T: ...
def evolve(inst: _T, **changes: Any) -> _T: ...
# _config --
def set_run_validators(run: bool) -> None: ...
def get_run_validators() -> bool: ...
# aliases --
s = attributes = attrs
ib = attr = attrib
dataclass = attrs # Technically, partial(attrs, auto_attribs=True) ;)

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from __future__ import absolute_import, division, print_function
import platform
import sys
import types
import warnings
PY2 = sys.version_info[0] == 2
PYPY = platform.python_implementation() == "PyPy"
if PYPY or sys.version_info[:2] >= (3, 6):
ordered_dict = dict
else:
from collections import OrderedDict
ordered_dict = OrderedDict
if PY2:
from collections import Mapping, Sequence
from UserDict import IterableUserDict
# We 'bundle' isclass instead of using inspect as importing inspect is
# fairly expensive (order of 10-15 ms for a modern machine in 2016)
def isclass(klass):
return isinstance(klass, (type, types.ClassType))
# TYPE is used in exceptions, repr(int) is different on Python 2 and 3.
TYPE = "type"
def iteritems(d):
return d.iteritems()
# Python 2 is bereft of a read-only dict proxy, so we make one!
class ReadOnlyDict(IterableUserDict):
"""
Best-effort read-only dict wrapper.
"""
def __setitem__(self, key, val):
# We gently pretend we're a Python 3 mappingproxy.
raise TypeError(
"'mappingproxy' object does not support item assignment"
)
def update(self, _):
# We gently pretend we're a Python 3 mappingproxy.
raise AttributeError(
"'mappingproxy' object has no attribute 'update'"
)
def __delitem__(self, _):
# We gently pretend we're a Python 3 mappingproxy.
raise TypeError(
"'mappingproxy' object does not support item deletion"
)
def clear(self):
# We gently pretend we're a Python 3 mappingproxy.
raise AttributeError(
"'mappingproxy' object has no attribute 'clear'"
)
def pop(self, key, default=None):
# We gently pretend we're a Python 3 mappingproxy.
raise AttributeError(
"'mappingproxy' object has no attribute 'pop'"
)
def popitem(self):
# We gently pretend we're a Python 3 mappingproxy.
raise AttributeError(
"'mappingproxy' object has no attribute 'popitem'"
)
def setdefault(self, key, default=None):
# We gently pretend we're a Python 3 mappingproxy.
raise AttributeError(
"'mappingproxy' object has no attribute 'setdefault'"
)
def __repr__(self):
# Override to be identical to the Python 3 version.
return "mappingproxy(" + repr(self.data) + ")"
def metadata_proxy(d):
res = ReadOnlyDict()
res.data.update(d) # We blocked update, so we have to do it like this.
return res
def just_warn(*args, **kw): # pragma: no cover
"""
We only warn on Python 3 because we are not aware of any concrete
consequences of not setting the cell on Python 2.
"""
else: # Python 3 and later.
from collections.abc import Mapping, Sequence # noqa
def just_warn(*args, **kw):
"""
We only warn on Python 3 because we are not aware of any concrete
consequences of not setting the cell on Python 2.
"""
warnings.warn(
"Running interpreter doesn't sufficiently support code object "
"introspection. Some features like bare super() or accessing "
"__class__ will not work with slotted classes.",
RuntimeWarning,
stacklevel=2,
)
def isclass(klass):
return isinstance(klass, type)
TYPE = "class"
def iteritems(d):
return d.items()
def metadata_proxy(d):
return types.MappingProxyType(dict(d))
def make_set_closure_cell():
"""Return a function of two arguments (cell, value) which sets
the value stored in the closure cell `cell` to `value`.
"""
# pypy makes this easy. (It also supports the logic below, but
# why not do the easy/fast thing?)
if PYPY:
def set_closure_cell(cell, value):
cell.__setstate__((value,))
return set_closure_cell
# Otherwise gotta do it the hard way.
# Create a function that will set its first cellvar to `value`.
def set_first_cellvar_to(value):
x = value
return
# This function will be eliminated as dead code, but
# not before its reference to `x` forces `x` to be
# represented as a closure cell rather than a local.
def force_x_to_be_a_cell(): # pragma: no cover
return x
try:
# Extract the code object and make sure our assumptions about
# the closure behavior are correct.
if PY2:
co = set_first_cellvar_to.func_code
else:
co = set_first_cellvar_to.__code__
if co.co_cellvars != ("x",) or co.co_freevars != ():
raise AssertionError # pragma: no cover
# Convert this code object to a code object that sets the
# function's first _freevar_ (not cellvar) to the argument.
if sys.version_info >= (3, 8):
# CPython 3.8+ has an incompatible CodeType signature
# (added a posonlyargcount argument) but also added
# CodeType.replace() to do this without counting parameters.
set_first_freevar_code = co.replace(
co_cellvars=co.co_freevars, co_freevars=co.co_cellvars
)
else:
args = [co.co_argcount]
if not PY2:
args.append(co.co_kwonlyargcount)
args.extend(
[
co.co_nlocals,
co.co_stacksize,
co.co_flags,
co.co_code,
co.co_consts,
co.co_names,
co.co_varnames,
co.co_filename,
co.co_name,
co.co_firstlineno,
co.co_lnotab,
# These two arguments are reversed:
co.co_cellvars,
co.co_freevars,
]
)
set_first_freevar_code = types.CodeType(*args)
def set_closure_cell(cell, value):
# Create a function using the set_first_freevar_code,
# whose first closure cell is `cell`. Calling it will
# change the value of that cell.
setter = types.FunctionType(
set_first_freevar_code, {}, "setter", (), (cell,)
)
# And call it to set the cell.
setter(value)
# Make sure it works on this interpreter:
def make_func_with_cell():
x = None
def func():
return x # pragma: no cover
return func
if PY2:
cell = make_func_with_cell().func_closure[0]
else:
cell = make_func_with_cell().__closure__[0]
set_closure_cell(cell, 100)
if cell.cell_contents != 100:
raise AssertionError # pragma: no cover
except Exception:
return just_warn
else:
return set_closure_cell
set_closure_cell = make_set_closure_cell()

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from __future__ import absolute_import, division, print_function
__all__ = ["set_run_validators", "get_run_validators"]
_run_validators = True
def set_run_validators(run):
"""
Set whether or not validators are run. By default, they are run.
"""
if not isinstance(run, bool):
raise TypeError("'run' must be bool.")
global _run_validators
_run_validators = run
def get_run_validators():
"""
Return whether or not validators are run.
"""
return _run_validators

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from __future__ import absolute_import, division, print_function
import copy
from ._compat import iteritems
from ._make import NOTHING, _obj_setattr, fields
from .exceptions import AttrsAttributeNotFoundError
def asdict(
inst,
recurse=True,
filter=None,
dict_factory=dict,
retain_collection_types=False,
value_serializer=None,
):
"""
Return the ``attrs`` attribute values of *inst* as a dict.
Optionally recurse into other ``attrs``-decorated classes.
:param inst: Instance of an ``attrs``-decorated class.
:param bool recurse: Recurse into classes that are also
``attrs``-decorated.
:param callable filter: A callable whose return code determines whether an
attribute or element is included (``True``) or dropped (``False``). Is
called with the `attr.Attribute` as the first argument and the
value as the second argument.
:param callable dict_factory: A callable to produce dictionaries from. For
example, to produce ordered dictionaries instead of normal Python
dictionaries, pass in ``collections.OrderedDict``.
:param bool retain_collection_types: Do not convert to ``list`` when
encountering an attribute whose type is ``tuple`` or ``set``. Only
meaningful if ``recurse`` is ``True``.
:param Optional[callable] value_serializer: A hook that is called for every
attribute or dict key/value. It receives the current instance, field
and value and must return the (updated) value. The hook is run *after*
the optional *filter* has been applied.
:rtype: return type of *dict_factory*
:raise attr.exceptions.NotAnAttrsClassError: If *cls* is not an ``attrs``
class.
.. versionadded:: 16.0.0 *dict_factory*
.. versionadded:: 16.1.0 *retain_collection_types*
.. versionadded:: 20.3.0 *value_serializer*
"""
attrs = fields(inst.__class__)
rv = dict_factory()
for a in attrs:
v = getattr(inst, a.name)
if filter is not None and not filter(a, v):
continue
if value_serializer is not None:
v = value_serializer(inst, a, v)
if recurse is True:
if has(v.__class__):
rv[a.name] = asdict(
v,
True,
filter,
dict_factory,
retain_collection_types,
value_serializer,
)
elif isinstance(v, (tuple, list, set, frozenset)):
cf = v.__class__ if retain_collection_types is True else list
rv[a.name] = cf(
[
_asdict_anything(
i,
filter,
dict_factory,
retain_collection_types,
value_serializer,
)
for i in v
]
)
elif isinstance(v, dict):
df = dict_factory
rv[a.name] = df(
(
_asdict_anything(
kk,
filter,
df,
retain_collection_types,
value_serializer,
),
_asdict_anything(
vv,
filter,
df,
retain_collection_types,
value_serializer,
),
)
for kk, vv in iteritems(v)
)
else:
rv[a.name] = v
else:
rv[a.name] = v
return rv
def _asdict_anything(
val,
filter,
dict_factory,
retain_collection_types,
value_serializer,
):
"""
``asdict`` only works on attrs instances, this works on anything.
"""
if getattr(val.__class__, "__attrs_attrs__", None) is not None:
# Attrs class.
rv = asdict(
val,
True,
filter,
dict_factory,
retain_collection_types,
value_serializer,
)
elif isinstance(val, (tuple, list, set, frozenset)):
cf = val.__class__ if retain_collection_types is True else list
rv = cf(
[
_asdict_anything(
i,
filter,
dict_factory,
retain_collection_types,
value_serializer,
)
for i in val
]
)
elif isinstance(val, dict):
df = dict_factory
rv = df(
(
_asdict_anything(
kk, filter, df, retain_collection_types, value_serializer
),
_asdict_anything(
vv, filter, df, retain_collection_types, value_serializer
),
)
for kk, vv in iteritems(val)
)
else:
rv = val
if value_serializer is not None:
rv = value_serializer(None, None, rv)
return rv
def astuple(
inst,
recurse=True,
filter=None,
tuple_factory=tuple,
retain_collection_types=False,
):
"""
Return the ``attrs`` attribute values of *inst* as a tuple.
Optionally recurse into other ``attrs``-decorated classes.
:param inst: Instance of an ``attrs``-decorated class.
:param bool recurse: Recurse into classes that are also
``attrs``-decorated.
:param callable filter: A callable whose return code determines whether an
attribute or element is included (``True``) or dropped (``False``). Is
called with the `attr.Attribute` as the first argument and the
value as the second argument.
:param callable tuple_factory: A callable to produce tuples from. For
example, to produce lists instead of tuples.
:param bool retain_collection_types: Do not convert to ``list``
or ``dict`` when encountering an attribute which type is
``tuple``, ``dict`` or ``set``. Only meaningful if ``recurse`` is
``True``.
:rtype: return type of *tuple_factory*
:raise attr.exceptions.NotAnAttrsClassError: If *cls* is not an ``attrs``
class.
.. versionadded:: 16.2.0
"""
attrs = fields(inst.__class__)
rv = []
retain = retain_collection_types # Very long. :/
for a in attrs:
v = getattr(inst, a.name)
if filter is not None and not filter(a, v):
continue
if recurse is True:
if has(v.__class__):
rv.append(
astuple(
v,
recurse=True,
filter=filter,
tuple_factory=tuple_factory,
retain_collection_types=retain,
)
)
elif isinstance(v, (tuple, list, set, frozenset)):
cf = v.__class__ if retain is True else list
rv.append(
cf(
[
astuple(
j,
recurse=True,
filter=filter,
tuple_factory=tuple_factory,
retain_collection_types=retain,
)
if has(j.__class__)
else j
for j in v
]
)
)
elif isinstance(v, dict):
df = v.__class__ if retain is True else dict
rv.append(
df(
(
astuple(
kk,
tuple_factory=tuple_factory,
retain_collection_types=retain,
)
if has(kk.__class__)
else kk,
astuple(
vv,
tuple_factory=tuple_factory,
retain_collection_types=retain,
)
if has(vv.__class__)
else vv,
)
for kk, vv in iteritems(v)
)
)
else:
rv.append(v)
else:
rv.append(v)
return rv if tuple_factory is list else tuple_factory(rv)
def has(cls):
"""
Check whether *cls* is a class with ``attrs`` attributes.
:param type cls: Class to introspect.
:raise TypeError: If *cls* is not a class.
:rtype: bool
"""
return getattr(cls, "__attrs_attrs__", None) is not None
def assoc(inst, **changes):
"""
Copy *inst* and apply *changes*.
:param inst: Instance of a class with ``attrs`` attributes.
:param changes: Keyword changes in the new copy.
:return: A copy of inst with *changes* incorporated.
:raise attr.exceptions.AttrsAttributeNotFoundError: If *attr_name* couldn't
be found on *cls*.
:raise attr.exceptions.NotAnAttrsClassError: If *cls* is not an ``attrs``
class.
.. deprecated:: 17.1.0
Use `evolve` instead.
"""
import warnings
warnings.warn(
"assoc is deprecated and will be removed after 2018/01.",
DeprecationWarning,
stacklevel=2,
)
new = copy.copy(inst)
attrs = fields(inst.__class__)
for k, v in iteritems(changes):
a = getattr(attrs, k, NOTHING)
if a is NOTHING:
raise AttrsAttributeNotFoundError(
"{k} is not an attrs attribute on {cl}.".format(
k=k, cl=new.__class__
)
)
_obj_setattr(new, k, v)
return new
def evolve(inst, **changes):
"""
Create a new instance, based on *inst* with *changes* applied.
:param inst: Instance of a class with ``attrs`` attributes.
:param changes: Keyword changes in the new copy.
:return: A copy of inst with *changes* incorporated.
:raise TypeError: If *attr_name* couldn't be found in the class
``__init__``.
:raise attr.exceptions.NotAnAttrsClassError: If *cls* is not an ``attrs``
class.
.. versionadded:: 17.1.0
"""
cls = inst.__class__
attrs = fields(cls)
for a in attrs:
if not a.init:
continue
attr_name = a.name # To deal with private attributes.
init_name = attr_name if attr_name[0] != "_" else attr_name[1:]
if init_name not in changes:
changes[init_name] = getattr(inst, attr_name)
return cls(**changes)
def resolve_types(cls, globalns=None, localns=None):
"""
Resolve any strings and forward annotations in type annotations.
This is only required if you need concrete types in `Attribute`'s *type*
field. In other words, you don't need to resolve your types if you only
use them for static type checking.
With no arguments, names will be looked up in the module in which the class
was created. If this is not what you want, e.g. if the name only exists
inside a method, you may pass *globalns* or *localns* to specify other
dictionaries in which to look up these names. See the docs of
`typing.get_type_hints` for more details.
:param type cls: Class to resolve.
:param Optional[dict] globalns: Dictionary containing global variables.
:param Optional[dict] localns: Dictionary containing local variables.
:raise TypeError: If *cls* is not a class.
:raise attr.exceptions.NotAnAttrsClassError: If *cls* is not an ``attrs``
class.
:raise NameError: If types cannot be resolved because of missing variables.
:returns: *cls* so you can use this function also as a class decorator.
Please note that you have to apply it **after** `attr.s`. That means
the decorator has to come in the line **before** `attr.s`.
.. versionadded:: 20.1.0
"""
try:
# Since calling get_type_hints is expensive we cache whether we've
# done it already.
cls.__attrs_types_resolved__
except AttributeError:
import typing
hints = typing.get_type_hints(cls, globalns=globalns, localns=localns)
for field in fields(cls):
if field.name in hints:
# Since fields have been frozen we must work around it.
_obj_setattr(field, "type", hints[field.name])
cls.__attrs_types_resolved__ = True
# Return the class so you can use it as a decorator too.
return cls

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matteo_env/Lib/site-packages/attr/_next_gen.py Normal file
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"""
This is a Python 3.6 and later-only, keyword-only, and **provisional** API that
calls `attr.s` with different default values.
Provisional APIs that shall become "import attrs" one glorious day.
"""
from functools import partial
from attr.exceptions import UnannotatedAttributeError
from . import setters
from ._make import NOTHING, _frozen_setattrs, attrib, attrs
def define(
maybe_cls=None,
*,
these=None,
repr=None,
hash=None,
init=None,
slots=True,
frozen=False,
weakref_slot=True,
str=False,
auto_attribs=None,
kw_only=False,
cache_hash=False,
auto_exc=True,
eq=None,
order=False,
auto_detect=True,
getstate_setstate=None,
on_setattr=None,
field_transformer=None,
):
r"""
The only behavioral differences are the handling of the *auto_attribs*
option:
:param Optional[bool] auto_attribs: If set to `True` or `False`, it behaves
exactly like `attr.s`. If left `None`, `attr.s` will try to guess:
1. If all attributes are annotated and no `attr.ib` is found, it assumes
*auto_attribs=True*.
2. Otherwise it assumes *auto_attribs=False* and tries to collect
`attr.ib`\ s.
and that mutable classes (``frozen=False``) validate on ``__setattr__``.
.. versionadded:: 20.1.0
"""
def do_it(cls, auto_attribs):
return attrs(
maybe_cls=cls,
these=these,
repr=repr,
hash=hash,
init=init,
slots=slots,
frozen=frozen,
weakref_slot=weakref_slot,
str=str,
auto_attribs=auto_attribs,
kw_only=kw_only,
cache_hash=cache_hash,
auto_exc=auto_exc,
eq=eq,
order=order,
auto_detect=auto_detect,
collect_by_mro=True,
getstate_setstate=getstate_setstate,
on_setattr=on_setattr,
field_transformer=field_transformer,
)
def wrap(cls):
"""
Making this a wrapper ensures this code runs during class creation.
We also ensure that frozen-ness of classes is inherited.
"""
nonlocal frozen, on_setattr
had_on_setattr = on_setattr not in (None, setters.NO_OP)
# By default, mutable classes validate on setattr.
if frozen is False and on_setattr is None:
on_setattr = setters.validate
# However, if we subclass a frozen class, we inherit the immutability
# and disable on_setattr.
for base_cls in cls.__bases__:
if base_cls.__setattr__ is _frozen_setattrs:
if had_on_setattr:
raise ValueError(
"Frozen classes can't use on_setattr "
"(frozen-ness was inherited)."
)
on_setattr = setters.NO_OP
break
if auto_attribs is not None:
return do_it(cls, auto_attribs)
try:
return do_it(cls, True)
except UnannotatedAttributeError:
return do_it(cls, False)
# maybe_cls's type depends on the usage of the decorator. It's a class
# if it's used as `@attrs` but ``None`` if used as `@attrs()`.
if maybe_cls is None:
return wrap
else:
return wrap(maybe_cls)
mutable = define
frozen = partial(define, frozen=True, on_setattr=None)
def field(
*,
default=NOTHING,
validator=None,
repr=True,
hash=None,
init=True,
metadata=None,
converter=None,
factory=None,
kw_only=False,
eq=None,
order=None,
on_setattr=None,
):
"""
Identical to `attr.ib`, except keyword-only and with some arguments
removed.
.. versionadded:: 20.1.0
"""
return attrib(
default=default,
validator=validator,
repr=repr,
hash=hash,
init=init,
metadata=metadata,
converter=converter,
factory=factory,
kw_only=kw_only,
eq=eq,
order=order,
on_setattr=on_setattr,
)

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from __future__ import absolute_import, division, print_function
from functools import total_ordering
from ._funcs import astuple
from ._make import attrib, attrs
@total_ordering
@attrs(eq=False, order=False, slots=True, frozen=True)
class VersionInfo(object):
"""
A version object that can be compared to tuple of length 1--4:
>>> attr.VersionInfo(19, 1, 0, "final") <= (19, 2)
True
>>> attr.VersionInfo(19, 1, 0, "final") < (19, 1, 1)
True
>>> vi = attr.VersionInfo(19, 2, 0, "final")
>>> vi < (19, 1, 1)
False
>>> vi < (19,)
False
>>> vi == (19, 2,)
True
>>> vi == (19, 2, 1)
False
.. versionadded:: 19.2
"""
year = attrib(type=int)
minor = attrib(type=int)
micro = attrib(type=int)
releaselevel = attrib(type=str)
@classmethod
def _from_version_string(cls, s):
"""
Parse *s* and return a _VersionInfo.
"""
v = s.split(".")
if len(v) == 3:
v.append("final")
return cls(
year=int(v[0]), minor=int(v[1]), micro=int(v[2]), releaselevel=v[3]
)
def _ensure_tuple(self, other):
"""
Ensure *other* is a tuple of a valid length.
Returns a possibly transformed *other* and ourselves as a tuple of
the same length as *other*.
"""
if self.__class__ is other.__class__:
other = astuple(other)
if not isinstance(other, tuple):
raise NotImplementedError
if not (1 <= len(other) <= 4):
raise NotImplementedError
return astuple(self)[: len(other)], other
def __eq__(self, other):
try:
us, them = self._ensure_tuple(other)
except NotImplementedError:
return NotImplemented
return us == them
def __lt__(self, other):
try:
us, them = self._ensure_tuple(other)
except NotImplementedError:
return NotImplemented
# Since alphabetically "dev0" < "final" < "post1" < "post2", we don't
# have to do anything special with releaselevel for now.
return us < them

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matteo_env/Lib/site-packages/attr/_version_info.pyi Normal file
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class VersionInfo:
@property
def year(self) -> int: ...
@property
def minor(self) -> int: ...
@property
def micro(self) -> int: ...
@property
def releaselevel(self) -> str: ...

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matteo_env/Lib/site-packages/attr/converters.py Normal file
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"""
Commonly useful converters.
"""
from __future__ import absolute_import, division, print_function
from ._make import NOTHING, Factory, pipe
__all__ = [
"pipe",
"optional",
"default_if_none",
]
def optional(converter):
"""
A converter that allows an attribute to be optional. An optional attribute
is one which can be set to ``None``.
:param callable converter: the converter that is used for non-``None``
values.
.. versionadded:: 17.1.0
"""
def optional_converter(val):
if val is None:
return None
return converter(val)
return optional_converter
def default_if_none(default=NOTHING, factory=None):
"""
A converter that allows to replace ``None`` values by *default* or the
result of *factory*.
:param default: Value to be used if ``None`` is passed. Passing an instance
of `attr.Factory` is supported, however the ``takes_self`` option
is *not*.
:param callable factory: A callable that takes not parameters whose result
is used if ``None`` is passed.
:raises TypeError: If **neither** *default* or *factory* is passed.
:raises TypeError: If **both** *default* and *factory* are passed.
:raises ValueError: If an instance of `attr.Factory` is passed with
``takes_self=True``.
.. versionadded:: 18.2.0
"""
if default is NOTHING and factory is None:
raise TypeError("Must pass either `default` or `factory`.")
if default is not NOTHING and factory is not None:
raise TypeError(
"Must pass either `default` or `factory` but not both."
)
if factory is not None:
default = Factory(factory)
if isinstance(default, Factory):
if default.takes_self:
raise ValueError(
"`takes_self` is not supported by default_if_none."
)
def default_if_none_converter(val):
if val is not None:
return val
return default.factory()
else:
def default_if_none_converter(val):
if val is not None:
return val
return default
return default_if_none_converter

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from typing import TypeVar, Optional, Callable, overload
from . import _ConverterType
_T = TypeVar("_T")
def pipe(*validators: _ConverterType) -> _ConverterType: ...
def optional(converter: _ConverterType) -> _ConverterType: ...
@overload
def default_if_none(default: _T) -> _ConverterType: ...
@overload
def default_if_none(*, factory: Callable[[], _T]) -> _ConverterType: ...

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from __future__ import absolute_import, division, print_function
class FrozenError(AttributeError):
"""
A frozen/immutable instance or attribute haave been attempted to be
modified.
It mirrors the behavior of ``namedtuples`` by using the same error message
and subclassing `AttributeError`.
.. versionadded:: 20.1.0
"""
msg = "can't set attribute"
args = [msg]
class FrozenInstanceError(FrozenError):
"""
A frozen instance has been attempted to be modified.
.. versionadded:: 16.1.0
"""
class FrozenAttributeError(FrozenError):
"""
A frozen attribute has been attempted to be modified.
.. versionadded:: 20.1.0
"""
class AttrsAttributeNotFoundError(ValueError):
"""
An ``attrs`` function couldn't find an attribute that the user asked for.
.. versionadded:: 16.2.0
"""
class NotAnAttrsClassError(ValueError):
"""
A non-``attrs`` class has been passed into an ``attrs`` function.
.. versionadded:: 16.2.0
"""
class DefaultAlreadySetError(RuntimeError):
"""
A default has been set using ``attr.ib()`` and is attempted to be reset
using the decorator.
.. versionadded:: 17.1.0
"""
class UnannotatedAttributeError(RuntimeError):
"""
A class with ``auto_attribs=True`` has an ``attr.ib()`` without a type
annotation.
.. versionadded:: 17.3.0
"""
class PythonTooOldError(RuntimeError):
"""
It was attempted to use an ``attrs`` feature that requires a newer Python
version.
.. versionadded:: 18.2.0
"""
class NotCallableError(TypeError):
"""
A ``attr.ib()`` requiring a callable has been set with a value
that is not callable.
.. versionadded:: 19.2.0
"""
def __init__(self, msg, value):
super(TypeError, self).__init__(msg, value)
self.msg = msg
self.value = value
def __str__(self):
return str(self.msg)

17
matteo_env/Lib/site-packages/attr/exceptions.pyi Normal file
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@ -0,0 +1,17 @@
from typing import Any
class FrozenError(AttributeError):
msg: str = ...
class FrozenInstanceError(FrozenError): ...
class FrozenAttributeError(FrozenError): ...
class AttrsAttributeNotFoundError(ValueError): ...
class NotAnAttrsClassError(ValueError): ...
class DefaultAlreadySetError(RuntimeError): ...
class UnannotatedAttributeError(RuntimeError): ...
class PythonTooOldError(RuntimeError): ...
class NotCallableError(TypeError):
msg: str = ...
value: Any = ...
def __init__(self, msg: str, value: Any) -> None: ...

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