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Copyright 2010 Pallets
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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Metadata-Version: 2.1
Name: MarkupSafe
Version: 2.1.5
Summary: Safely add untrusted strings to HTML/XML markup.
Home-page: https://palletsprojects.com/p/markupsafe/
Maintainer: Pallets
Maintainer-email: contact@palletsprojects.com
License: BSD-3-Clause
Project-URL: Donate, https://palletsprojects.com/donate
Project-URL: Documentation, https://markupsafe.palletsprojects.com/
Project-URL: Changes, https://markupsafe.palletsprojects.com/changes/
Project-URL: Source Code, https://github.com/pallets/markupsafe/
Project-URL: Issue Tracker, https://github.com/pallets/markupsafe/issues/
Project-URL: Chat, https://discord.gg/pallets
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Web Environment
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
Classifier: Topic :: Text Processing :: Markup :: HTML
Requires-Python: >=3.7
Description-Content-Type: text/x-rst
License-File: LICENSE.rst
MarkupSafe
==========
MarkupSafe implements a text object that escapes characters so it is
safe to use in HTML and XML. Characters that have special meanings are
replaced so that they display as the actual characters. This mitigates
injection attacks, meaning untrusted user input can safely be displayed
on a page.
Installing
----------
Install and update using `pip`_:
.. code-block:: text
pip install -U MarkupSafe
.. _pip: https://pip.pypa.io/en/stable/getting-started/
Examples
--------
.. code-block:: pycon
>>> from markupsafe import Markup, escape
>>> # escape replaces special characters and wraps in Markup
>>> escape("<script>alert(document.cookie);</script>")
Markup('&lt;script&gt;alert(document.cookie);&lt;/script&gt;')
>>> # wrap in Markup to mark text "safe" and prevent escaping
>>> Markup("<strong>Hello</strong>")
Markup('<strong>hello</strong>')
>>> escape(Markup("<strong>Hello</strong>"))
Markup('<strong>hello</strong>')
>>> # Markup is a str subclass
>>> # methods and operators escape their arguments
>>> template = Markup("Hello <em>{name}</em>")
>>> template.format(name='"World"')
Markup('Hello <em>&#34;World&#34;</em>')
Donate
------
The Pallets organization develops and supports MarkupSafe and other
popular packages. In order to grow the community of contributors and
users, and allow the maintainers to devote more time to the projects,
`please donate today`_.
.. _please donate today: https://palletsprojects.com/donate
Links
-----
- Documentation: https://markupsafe.palletsprojects.com/
- Changes: https://markupsafe.palletsprojects.com/changes/
- PyPI Releases: https://pypi.org/project/MarkupSafe/
- Source Code: https://github.com/pallets/markupsafe/
- Issue Tracker: https://github.com/pallets/markupsafe/issues/
- Chat: https://discord.gg/pallets

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Copyright aio-libs contributors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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Metadata-Version: 2.1
Name: aiohttp
Version: 3.9.5
Summary: Async http client/server framework (asyncio)
Home-page: https://github.com/aio-libs/aiohttp
Maintainer: aiohttp team <team@aiohttp.org>
Maintainer-email: team@aiohttp.org
License: Apache 2
Project-URL: Chat: Matrix, https://matrix.to/#/#aio-libs:matrix.org
Project-URL: Chat: Matrix Space, https://matrix.to/#/#aio-libs-space:matrix.org
Project-URL: CI: GitHub Actions, https://github.com/aio-libs/aiohttp/actions?query=workflow%3ACI
Project-URL: Coverage: codecov, https://codecov.io/github/aio-libs/aiohttp
Project-URL: Docs: Changelog, https://docs.aiohttp.org/en/stable/changes.html
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
Classifier: Development Status :: 5 - Production/Stable
Classifier: Framework :: AsyncIO
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Operating System :: POSIX
Classifier: Operating System :: MacOS :: MacOS X
Classifier: Operating System :: Microsoft :: Windows
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Topic :: Internet :: WWW/HTTP
Requires-Python: >=3.8
Description-Content-Type: text/x-rst
License-File: LICENSE.txt
Requires-Dist: aiosignal >=1.1.2
Requires-Dist: attrs >=17.3.0
Requires-Dist: frozenlist >=1.1.1
Requires-Dist: multidict <7.0,>=4.5
Requires-Dist: yarl <2.0,>=1.0
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Provides-Extra: speedups
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==================================
Async http client/server framework
==================================
.. image:: https://raw.githubusercontent.com/aio-libs/aiohttp/master/docs/aiohttp-plain.svg
:height: 64px
:width: 64px
:alt: aiohttp logo
|
.. image:: https://github.com/aio-libs/aiohttp/workflows/CI/badge.svg
:target: https://github.com/aio-libs/aiohttp/actions?query=workflow%3ACI
:alt: GitHub Actions 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://img.shields.io/matrix/aio-libs:matrix.org?label=Discuss%20on%20Matrix%20at%20%23aio-libs%3Amatrix.org&logo=matrix&server_fqdn=matrix.org&style=flat
:target: https://matrix.to/#/%23aio-libs:matrix.org
:alt: Matrix Room — #aio-libs:matrix.org
.. image:: https://img.shields.io/matrix/aio-libs-space:matrix.org?label=Discuss%20on%20Matrix%20at%20%23aio-libs-space%3Amatrix.org&logo=matrix&server_fqdn=matrix.org&style=flat
:target: https://matrix.to/#/%23aio-libs-space:matrix.org
:alt: Matrix Space — #aio-libs-space:matrix.org
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 middleware and pluggable routing.
Getting started
===============
Client
------
To get something from the web:
.. code-block:: python
import aiohttp
import asyncio
async def main():
async with aiohttp.ClientSession() as session:
async with session.get('http://python.org') as response:
print("Status:", response.status)
print("Content-type:", response.headers['content-type'])
html = await response.text()
print("Body:", html[:15], "...")
asyncio.run(main())
This prints:
.. code-block::
Status: 200
Content-type: text/html; charset=utf-8
Body: <!doctype html> ...
Coming from `requests <https://requests.readthedocs.io/>`_ ? Read `why we need so many lines <https://aiohttp.readthedocs.io/en/latest/http_request_lifecycle.html>`_.
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 Discussions*: https://github.com/aio-libs/aiohttp/discussions
*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
============
- async-timeout_
- attrs_
- multidict_
- yarl_
- frozenlist_
Optionally you may install the aiodns_ library (highly recommended for sake of speed).
.. _aiodns: https://pypi.python.org/pypi/aiodns
.. _attrs: https://github.com/python-attrs/attrs
.. _multidict: https://pypi.python.org/pypi/multidict
.. _frozenlist: https://pypi.org/project/frozenlist/
.. _yarl: https://pypi.python.org/pypi/yarl
.. _async-timeout: https://pypi.python.org/pypi/async_timeout
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

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aiohttp/web_request.py,sha256=UyDR4JQwogyX12FS8PpMl-1d6ZG-TE02Bt2nPOEk0HI,28986
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Wheel-Version: 1.0
Generator: bdist_wheel (0.43.0)
Root-Is-Purelib: false
Tag: cp312-cp312-manylinux_2_17_x86_64
Tag: cp312-cp312-manylinux2014_x86_64

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6881c0a7c838655e646c645d99971efaf5e310bc3633a7c62b226e39d81842ac /home/runner/work/aiohttp/aiohttp/aiohttp/_http_writer.pyx

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__version__ = "3.9.5"
from typing import TYPE_CHECKING, Tuple
from . import hdrs as hdrs
from .client import (
BaseConnector as BaseConnector,
ClientConnectionError as ClientConnectionError,
ClientConnectorCertificateError as ClientConnectorCertificateError,
ClientConnectorError as ClientConnectorError,
ClientConnectorSSLError as ClientConnectorSSLError,
ClientError as ClientError,
ClientHttpProxyError as ClientHttpProxyError,
ClientOSError as ClientOSError,
ClientPayloadError as ClientPayloadError,
ClientProxyConnectionError as ClientProxyConnectionError,
ClientRequest as ClientRequest,
ClientResponse as ClientResponse,
ClientResponseError as ClientResponseError,
ClientSession as ClientSession,
ClientSSLError as ClientSSLError,
ClientTimeout as ClientTimeout,
ClientWebSocketResponse as ClientWebSocketResponse,
ContentTypeError as ContentTypeError,
Fingerprint as Fingerprint,
InvalidURL as InvalidURL,
NamedPipeConnector as NamedPipeConnector,
RequestInfo as RequestInfo,
ServerConnectionError as ServerConnectionError,
ServerDisconnectedError as ServerDisconnectedError,
ServerFingerprintMismatch as ServerFingerprintMismatch,
ServerTimeoutError as ServerTimeoutError,
TCPConnector as TCPConnector,
TooManyRedirects as TooManyRedirects,
UnixConnector as UnixConnector,
WSServerHandshakeError as WSServerHandshakeError,
request as request,
)
from .cookiejar import CookieJar as CookieJar, DummyCookieJar as DummyCookieJar
from .formdata import FormData as FormData
from .helpers import BasicAuth, ChainMapProxy, ETag
from .http import (
HttpVersion as HttpVersion,
HttpVersion10 as HttpVersion10,
HttpVersion11 as HttpVersion11,
WebSocketError as WebSocketError,
WSCloseCode as WSCloseCode,
WSMessage as WSMessage,
WSMsgType as WSMsgType,
)
from .multipart import (
BadContentDispositionHeader as BadContentDispositionHeader,
BadContentDispositionParam as BadContentDispositionParam,
BodyPartReader as BodyPartReader,
MultipartReader as MultipartReader,
MultipartWriter as MultipartWriter,
content_disposition_filename as content_disposition_filename,
parse_content_disposition as parse_content_disposition,
)
from .payload import (
PAYLOAD_REGISTRY as PAYLOAD_REGISTRY,
AsyncIterablePayload as AsyncIterablePayload,
BufferedReaderPayload as BufferedReaderPayload,
BytesIOPayload as BytesIOPayload,
BytesPayload as BytesPayload,
IOBasePayload as IOBasePayload,
JsonPayload as JsonPayload,
Payload as Payload,
StringIOPayload as StringIOPayload,
StringPayload as StringPayload,
TextIOPayload as TextIOPayload,
get_payload as get_payload,
payload_type as payload_type,
)
from .payload_streamer import streamer as streamer
from .resolver import (
AsyncResolver as AsyncResolver,
DefaultResolver as DefaultResolver,
ThreadedResolver as ThreadedResolver,
)
from .streams import (
EMPTY_PAYLOAD as EMPTY_PAYLOAD,
DataQueue as DataQueue,
EofStream as EofStream,
FlowControlDataQueue as FlowControlDataQueue,
StreamReader as StreamReader,
)
from .tracing import (
TraceConfig as TraceConfig,
TraceConnectionCreateEndParams as TraceConnectionCreateEndParams,
TraceConnectionCreateStartParams as TraceConnectionCreateStartParams,
TraceConnectionQueuedEndParams as TraceConnectionQueuedEndParams,
TraceConnectionQueuedStartParams as TraceConnectionQueuedStartParams,
TraceConnectionReuseconnParams as TraceConnectionReuseconnParams,
TraceDnsCacheHitParams as TraceDnsCacheHitParams,
TraceDnsCacheMissParams as TraceDnsCacheMissParams,
TraceDnsResolveHostEndParams as TraceDnsResolveHostEndParams,
TraceDnsResolveHostStartParams as TraceDnsResolveHostStartParams,
TraceRequestChunkSentParams as TraceRequestChunkSentParams,
TraceRequestEndParams as TraceRequestEndParams,
TraceRequestExceptionParams as TraceRequestExceptionParams,
TraceRequestRedirectParams as TraceRequestRedirectParams,
TraceRequestStartParams as TraceRequestStartParams,
TraceResponseChunkReceivedParams as TraceResponseChunkReceivedParams,
)
if TYPE_CHECKING:
# At runtime these are lazy-loaded at the bottom of the file.
from .worker import (
GunicornUVLoopWebWorker as GunicornUVLoopWebWorker,
GunicornWebWorker as GunicornWebWorker,
)
__all__: Tuple[str, ...] = (
"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",
"ETag",
# 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",
# streams
"DataQueue",
"EMPTY_PAYLOAD",
"EofStream",
"FlowControlDataQueue",
"StreamReader",
# tracing
"TraceConfig",
"TraceConnectionCreateEndParams",
"TraceConnectionCreateStartParams",
"TraceConnectionQueuedEndParams",
"TraceConnectionQueuedStartParams",
"TraceConnectionReuseconnParams",
"TraceDnsCacheHitParams",
"TraceDnsCacheMissParams",
"TraceDnsResolveHostEndParams",
"TraceDnsResolveHostStartParams",
"TraceRequestChunkSentParams",
"TraceRequestEndParams",
"TraceRequestExceptionParams",
"TraceRequestRedirectParams",
"TraceRequestStartParams",
"TraceResponseChunkReceivedParams",
# workers (imported lazily with __getattr__)
"GunicornUVLoopWebWorker",
"GunicornWebWorker",
)
def __dir__() -> Tuple[str, ...]:
return __all__ + ("__author__", "__doc__")
def __getattr__(name: str) -> object:
global GunicornUVLoopWebWorker, GunicornWebWorker
# Importing gunicorn takes a long time (>100ms), so only import if actually needed.
if name in ("GunicornUVLoopWebWorker", "GunicornWebWorker"):
try:
from .worker import GunicornUVLoopWebWorker as guv, GunicornWebWorker as gw
except ImportError:
return None
GunicornUVLoopWebWorker = guv # type: ignore[misc]
GunicornWebWorker = gw # type: ignore[misc]
return guv if name == "GunicornUVLoopWebWorker" else gw
raise AttributeError(f"module {__name__} has no attribute {name}")

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from libc.stdint cimport int32_t, uint8_t, uint16_t, uint64_t
cdef extern from "../vendor/llhttp/build/llhttp.h":
struct llhttp__internal_s:
int32_t _index
void* _span_pos0
void* _span_cb0
int32_t error
const char* reason
const char* error_pos
void* data
void* _current
uint64_t content_length
uint8_t type
uint8_t method
uint8_t http_major
uint8_t http_minor
uint8_t header_state
uint8_t lenient_flags
uint8_t upgrade
uint8_t finish
uint16_t flags
uint16_t status_code
void* settings
ctypedef llhttp__internal_s llhttp__internal_t
ctypedef llhttp__internal_t llhttp_t
ctypedef int (*llhttp_data_cb)(llhttp_t*, const char *at, size_t length) except -1
ctypedef int (*llhttp_cb)(llhttp_t*) except -1
struct llhttp_settings_s:
llhttp_cb on_message_begin
llhttp_data_cb on_url
llhttp_data_cb on_status
llhttp_data_cb on_header_field
llhttp_data_cb on_header_value
llhttp_cb on_headers_complete
llhttp_data_cb on_body
llhttp_cb on_message_complete
llhttp_cb on_chunk_header
llhttp_cb on_chunk_complete
llhttp_cb on_url_complete
llhttp_cb on_status_complete
llhttp_cb on_header_field_complete
llhttp_cb on_header_value_complete
ctypedef llhttp_settings_s llhttp_settings_t
enum llhttp_errno:
HPE_OK,
HPE_INTERNAL,
HPE_STRICT,
HPE_LF_EXPECTED,
HPE_UNEXPECTED_CONTENT_LENGTH,
HPE_CLOSED_CONNECTION,
HPE_INVALID_METHOD,
HPE_INVALID_URL,
HPE_INVALID_CONSTANT,
HPE_INVALID_VERSION,
HPE_INVALID_HEADER_TOKEN,
HPE_INVALID_CONTENT_LENGTH,
HPE_INVALID_CHUNK_SIZE,
HPE_INVALID_STATUS,
HPE_INVALID_EOF_STATE,
HPE_INVALID_TRANSFER_ENCODING,
HPE_CB_MESSAGE_BEGIN,
HPE_CB_HEADERS_COMPLETE,
HPE_CB_MESSAGE_COMPLETE,
HPE_CB_CHUNK_HEADER,
HPE_CB_CHUNK_COMPLETE,
HPE_PAUSED,
HPE_PAUSED_UPGRADE,
HPE_USER
ctypedef llhttp_errno llhttp_errno_t
enum llhttp_flags:
F_CHUNKED,
F_CONTENT_LENGTH
enum llhttp_type:
HTTP_REQUEST,
HTTP_RESPONSE,
HTTP_BOTH
enum llhttp_method:
HTTP_DELETE,
HTTP_GET,
HTTP_HEAD,
HTTP_POST,
HTTP_PUT,
HTTP_CONNECT,
HTTP_OPTIONS,
HTTP_TRACE,
HTTP_COPY,
HTTP_LOCK,
HTTP_MKCOL,
HTTP_MOVE,
HTTP_PROPFIND,
HTTP_PROPPATCH,
HTTP_SEARCH,
HTTP_UNLOCK,
HTTP_BIND,
HTTP_REBIND,
HTTP_UNBIND,
HTTP_ACL,
HTTP_REPORT,
HTTP_MKACTIVITY,
HTTP_CHECKOUT,
HTTP_MERGE,
HTTP_MSEARCH,
HTTP_NOTIFY,
HTTP_SUBSCRIBE,
HTTP_UNSUBSCRIBE,
HTTP_PATCH,
HTTP_PURGE,
HTTP_MKCALENDAR,
HTTP_LINK,
HTTP_UNLINK,
HTTP_SOURCE,
HTTP_PRI,
HTTP_DESCRIBE,
HTTP_ANNOUNCE,
HTTP_SETUP,
HTTP_PLAY,
HTTP_PAUSE,
HTTP_TEARDOWN,
HTTP_GET_PARAMETER,
HTTP_SET_PARAMETER,
HTTP_REDIRECT,
HTTP_RECORD,
HTTP_FLUSH
ctypedef llhttp_method llhttp_method_t;
void llhttp_settings_init(llhttp_settings_t* settings)
void llhttp_init(llhttp_t* parser, llhttp_type type,
const llhttp_settings_t* settings)
llhttp_errno_t llhttp_execute(llhttp_t* parser, const char* data, size_t len)
int llhttp_should_keep_alive(const llhttp_t* parser)
void llhttp_resume_after_upgrade(llhttp_t* parser)
llhttp_errno_t llhttp_get_errno(const llhttp_t* parser)
const char* llhttp_get_error_reason(const llhttp_t* parser)
const char* llhttp_get_error_pos(const llhttp_t* parser)
const char* llhttp_method_name(llhttp_method_t method)
void llhttp_set_lenient_headers(llhttp_t* parser, int enabled)
void llhttp_set_lenient_optional_cr_before_lf(llhttp_t* parser, int enabled)
void llhttp_set_lenient_spaces_after_chunk_size(llhttp_t* parser, int enabled)

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

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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.URI,
hdrs.UPGRADE,
hdrs.USER_AGENT,
hdrs.VARY,
hdrs.VIA,
hdrs.WWW_AUTHENTICATE,
hdrs.WANT_DIGEST,
hdrs.WARNING,
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 cpython cimport (
Py_buffer,
PyBUF_SIMPLE,
PyBuffer_Release,
PyBytes_AsString,
PyBytes_AsStringAndSize,
PyObject_GetBuffer,
)
from cpython.mem cimport PyMem_Free, PyMem_Malloc
from libc.limits cimport ULLONG_MAX
from libc.string cimport memcpy
from multidict import CIMultiDict as _CIMultiDict, CIMultiDictProxy as _CIMultiDictProxy
from yarl import URL as _URL
from aiohttp import hdrs
from aiohttp.helpers import DEBUG, set_exception
from .http_exceptions import (
BadHttpMessage,
BadStatusLine,
ContentLengthError,
InvalidHeader,
InvalidURLError,
LineTooLong,
PayloadEncodingError,
TransferEncodingError,
)
from .http_parser import DeflateBuffer as _DeflateBuffer
from .http_writer import (
HttpVersion as _HttpVersion,
HttpVersion10 as _HttpVersion10,
HttpVersion11 as _HttpVersion11,
)
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 = 46;
cdef list _http_method = []
for i in range(METHODS_COUNT):
_http_method.append(
cparser.llhttp_method_name(<cparser.llhttp_method_t> 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.llhttp_t* _cparser
cparser.llhttp_settings_t* _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 _read_until_eof
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
int _limit
str _content_encoding
Py_buffer py_buf
def __cinit__(self):
self._cparser = <cparser.llhttp_t*> \
PyMem_Malloc(sizeof(cparser.llhttp_t))
if self._cparser is NULL:
raise MemoryError()
self._csettings = <cparser.llhttp_settings_t*> \
PyMem_Malloc(sizeof(cparser.llhttp_settings_t))
if self._csettings is NULL:
raise MemoryError()
def __dealloc__(self):
PyMem_Free(self._cparser)
PyMem_Free(self._csettings)
cdef _init(
self, cparser.llhttp_type mode,
object protocol, object loop, int limit,
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 read_until_eof=False,
bint auto_decompress=True,
):
cparser.llhttp_settings_init(self._csettings)
cparser.llhttp_init(self._cparser, mode, self._csettings)
self._cparser.data = <void*>self
self._cparser.content_length = 0
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._read_until_eof = read_until_eof
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
self._limit = limit
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.llhttp_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 == cparser.HTTP_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 (
ULLONG_MAX > self._cparser.content_length > 0 or chunked or
self._cparser.method == cparser.HTTP_CONNECT or
(self._cparser.status_code >= 199 and
self._cparser.content_length == 0 and
self._read_until_eof)
):
payload = StreamReader(
self._protocol, timer=self._timer, loop=self._loop,
limit=self._limit)
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.llhttp_t* 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_CONTENT_LENGTH:
raise ContentLengthError(
"Not enough data for satisfy content length header.")
elif cparser.llhttp_get_errno(self._cparser) != cparser.HPE_OK:
desc = cparser.llhttp_get_error_reason(self._cparser)
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
cdef cparser.llhttp_errno_t errno
PyObject_GetBuffer(data, &self.py_buf, PyBUF_SIMPLE)
data_len = <size_t>self.py_buf.len
errno = cparser.llhttp_execute(
self._cparser,
<char*>self.py_buf.buf,
data_len)
if errno is cparser.HPE_PAUSED_UPGRADE:
cparser.llhttp_resume_after_upgrade(self._cparser)
nb = cparser.llhttp_get_error_pos(self._cparser) - <char*>self.py_buf.buf
PyBuffer_Release(&self.py_buf)
if errno not in (cparser.HPE_OK, cparser.HPE_PAUSED_UPGRADE):
if self._payload_error == 0:
if self._last_error is not None:
ex = self._last_error
self._last_error = None
else:
after = cparser.llhttp_get_error_pos(self._cparser)
before = data[:after - <char*>self.py_buf.buf]
after_b = after.split(b"\r\n", 1)[0]
before = before.rsplit(b"\r\n", 1)[-1]
data = before + after_b
pointer = " " * (len(repr(before))-1) + "^"
ex = parser_error_from_errno(self._cparser, data, pointer)
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''
def set_upgraded(self, val):
self._upgraded = val
cdef class HttpRequestParser(HttpParser):
def __init__(
self, protocol, loop, int limit, 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_REQUEST, protocol, loop, limit, timer,
max_line_size, max_headers, max_field_size,
payload_exception, response_with_body, read_until_eof,
auto_decompress)
cdef object _on_status_complete(self):
cdef int idx1, idx2
if not self._buf:
return
self._path = self._buf.decode('utf-8', 'surrogateescape')
try:
idx3 = len(self._path)
if self._cparser.method == cparser.HTTP_CONNECT:
# authority-form,
# https://datatracker.ietf.org/doc/html/rfc7230#section-5.3.3
self._url = URL.build(authority=self._path, encoded=True)
elif idx3 > 1 and self._path[0] == '/':
# origin-form,
# https://datatracker.ietf.org/doc/html/rfc7230#section-5.3.1
idx1 = self._path.find("?")
if idx1 == -1:
query = ""
idx2 = self._path.find("#")
if idx2 == -1:
path = self._path
fragment = ""
else:
path = self._path[0: idx2]
fragment = self._path[idx2+1:]
else:
path = self._path[0:idx1]
idx1 += 1
idx2 = self._path.find("#", idx1+1)
if idx2 == -1:
query = self._path[idx1:]
fragment = ""
else:
query = self._path[idx1: idx2]
fragment = self._path[idx2+1:]
self._url = URL.build(
path=path,
query_string=query,
fragment=fragment,
encoded=True,
)
else:
# absolute-form for proxy maybe,
# https://datatracker.ietf.org/doc/html/rfc7230#section-5.3.2
self._url = URL(self._path, encoded=True)
finally:
PyByteArray_Resize(self._buf, 0)
cdef class HttpResponseParser(HttpParser):
def __init__(
self, protocol, loop, int limit, 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, limit, timer,
max_line_size, max_headers, max_field_size,
payload_exception, response_with_body, read_until_eof,
auto_decompress)
# Use strict parsing on dev mode, so users are warned about broken servers.
if not DEBUG:
cparser.llhttp_set_lenient_headers(self._cparser, 1)
cparser.llhttp_set_lenient_optional_cr_before_lf(self._cparser, 1)
cparser.llhttp_set_lenient_spaces_after_chunk_size(self._cparser, 1)
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.llhttp_t* 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.llhttp_t* 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.llhttp_t* 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.llhttp_t* 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.llhttp_t* 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.llhttp_t* 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 == cparser.HTTP_CONNECT
):
return 2
else:
return 0
cdef int cb_on_body(cparser.llhttp_t* 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 underlying_exc:
reraised_exc = underlying_exc
if pyparser._payload_exception is not None:
reraised_exc = pyparser._payload_exception(str(underlying_exc))
set_exception(pyparser._payload, reraised_exc, underlying_exc)
pyparser._payload_error = 1
return -1
else:
return 0
cdef int cb_on_message_complete(cparser.llhttp_t* 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.llhttp_t* 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.llhttp_t* 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.llhttp_t* parser, data, pointer):
cdef cparser.llhttp_errno_t errno = cparser.llhttp_get_errno(parser)
cdef bytes desc = cparser.llhttp_get_error_reason(parser)
err_msg = "{}:\n\n {!r}\n {}".format(desc.decode("latin-1"), data, pointer)
if errno in {cparser.HPE_CB_MESSAGE_BEGIN,
cparser.HPE_CB_HEADERS_COMPLETE,
cparser.HPE_CB_MESSAGE_COMPLETE,
cparser.HPE_CB_CHUNK_HEADER,
cparser.HPE_CB_CHUNK_COMPLETE,
cparser.HPE_INVALID_CONSTANT,
cparser.HPE_INVALID_HEADER_TOKEN,
cparser.HPE_INVALID_CONTENT_LENGTH,
cparser.HPE_INVALID_CHUNK_SIZE,
cparser.HPE_INVALID_EOF_STATE,
cparser.HPE_INVALID_TRANSFER_ENCODING}:
return BadHttpMessage(err_msg)
elif errno in {cparser.HPE_INVALID_STATUS,
cparser.HPE_INVALID_METHOD,
cparser.HPE_INVALID_VERSION}:
return BadStatusLine(error=err_msg)
elif errno == cparser.HPE_INVALID_URL:
return InvalidURLError(err_msg)
return BadHttpMessage(err_msg)

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from cpython.bytes cimport PyBytes_FromStringAndSize
from cpython.exc cimport PyErr_NoMemory
from cpython.mem cimport PyMem_Free, PyMem_Malloc, PyMem_Realloc
from cpython.object cimport PyObject_Str
from libc.stdint cimport uint8_t, uint64_t
from libc.string cimport memcpy
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)
cdef void _safe_header(str string) except *:
if "\r" in string or "\n" in string:
raise ValueError(
"Newline or carriage return character detected in HTTP status message or "
"header. This is a potential security issue."
)
def _serialize_headers(str status_line, headers):
cdef Writer writer
cdef object key
cdef object val
cdef bytes ret
_init_writer(&writer)
for key, val in headers.items():
_safe_header(to_str(key))
_safe_header(to_str(val))
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
from typing import (
TYPE_CHECKING,
Any,
Awaitable,
Callable,
Dict,
Generator,
Iterable,
List,
Optional,
Tuple,
)
from multidict import CIMultiDict
from yarl import URL
from .helpers import get_running_loop
from .typedefs import LooseCookies
if TYPE_CHECKING:
from .web_app import Application
from .web_exceptions import HTTPException
from .web_request import BaseRequest, Request
from .web_response import StreamResponse
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[Optional[StreamResponse]]]:
"""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:
IterableBase = Iterable[Morsel[str]]
else:
IterableBase = Iterable
ClearCookiePredicate = Callable[["Morsel[str]"], bool]
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, predicate: Optional[ClearCookiePredicate] = None) -> None:
"""Clear all cookies if no predicate is passed."""
@abstractmethod
def clear_domain(self, domain: str) -> None:
"""Clear all cookies for domain and all subdomains."""
@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: Optional[int] = 0
@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 .helpers import set_exception
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: asyncio.AbstractEventLoop = loop
self._paused = False
self._drain_waiter: Optional[asyncio.Future[None]] = None
self._reading_paused = False
self.transport: Optional[asyncio.Transport] = None
@property
def connected(self) -> bool:
"""Return True if the connection is open."""
return self.transport is not None
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:
# 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:
set_exception(
waiter,
ConnectionError("Connection lost"),
exc,
)
async def _drain_helper(self) -> None:
if not self.connected:
raise ConnectionResetError("Connection lost")
if not self._paused:
return
waiter = self._drain_waiter
if waiter is None:
waiter = self._loop.create_future()
self._drain_waiter = waiter
await asyncio.shield(waiter)

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"""HTTP related errors."""
import asyncio
import warnings
from typing import TYPE_CHECKING, Any, Optional, Tuple, Union
from .http_parser import RawResponseMessage
from .typedefs import LooseHeaders
try:
import ssl
SSLContext = ssl.SSLContext
except ImportError: # pragma: no cover
ssl = SSLContext = None # type: ignore[assignment]
if TYPE_CHECKING:
from .client_reqrep import ClientResponse, ConnectionKey, Fingerprint, RequestInfo
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):
"""Base class for exceptions that occur after getting a response.
request_info: An instance of RequestInfo.
history: A sequence of responses, if redirects occurred.
status: HTTP status code.
message: Error message.
headers: Response headers.
"""
def __init__(
self,
request_info: RequestInfo,
history: Tuple[ClientResponse, ...],
*,
code: Optional[int] = None,
status: Optional[int] = None,
message: str = "",
headers: Optional[LooseHeaders] = 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 "{}, message={!r}, url={!r}".format(
self.status,
self.message,
self.request_info.real_url,
)
def __repr__(self) -> str:
args = f"{self.request_info!r}, {self.history!r}"
if self.status != 0:
args += f", status={self.status!r}"
if self.message != "":
args += f", message={self.message!r}"
if self.headers is not None:
args += f", headers={self.headers!r}"
return f"{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
a connection 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, 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, "default" if self.ssl is True else self.ssl, 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 UnixClientConnectorError(ClientConnectorError):
"""Unix connector error.
Raised in :py:class:`aiohttp.connector.UnixConnector`
if connection to unix socket can not be established.
"""
def __init__(
self, path: str, connection_key: ConnectionKey, os_error: OSError
) -> None:
self._path = path
super().__init__(connection_key, os_error)
@property
def path(self) -> str:
return self._path
def __str__(self) -> str:
return "Cannot connect to unix socket {0.path} ssl:{1} [{2}]".format(
self, "default" if self.ssl is True else self.ssl, self.strerror
)
class ServerConnectionError(ClientConnectionError):
"""Server connection errors."""
class ServerDisconnectedError(ServerConnectionError):
"""Server disconnected."""
def __init__(self, message: Union[RawResponseMessage, str, None] = None) -> None:
if message is None:
message = "Server disconnected"
self.args = (message,)
self.message = 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 f"<{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[misc]
"""Response ssl error."""
class ClientConnectorCertificateError(*cert_errors_bases): # type: ignore[misc]
"""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 (
_EXC_SENTINEL,
BaseTimerContext,
set_exception,
status_code_must_be_empty_body,
)
from .http import HttpResponseParser, RawResponseMessage
from .http_exceptions import HttpProcessingError
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: Optional[StreamReader] = None
self._skip_payload = False
self._payload_parser = None
self._timer = None
self._tail = b""
self._upgraded = False
self._parser: Optional[HttpResponseParser] = None
self._read_timeout: Optional[float] = None
self._read_timeout_handle: Optional[asyncio.TimerHandle] = None
self._timeout_ceil_threshold: Optional[float] = 5
@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 and not self.transport.is_closing()
def connection_lost(self, exc: Optional[BaseException]) -> None:
self._drop_timeout()
original_connection_error = exc
reraised_exc = original_connection_error
connection_closed_cleanly = original_connection_error is None
if self._payload_parser is not None:
with suppress(Exception): # FIXME: log this somehow?
self._payload_parser.feed_eof()
uncompleted = None
if self._parser is not None:
try:
uncompleted = self._parser.feed_eof()
except Exception as underlying_exc:
if self._payload is not None:
client_payload_exc_msg = (
f"Response payload is not completed: {underlying_exc !r}"
)
if not connection_closed_cleanly:
client_payload_exc_msg = (
f"{client_payload_exc_msg !s}. "
f"{original_connection_error !r}"
)
set_exception(
self._payload,
ClientPayloadError(client_payload_exc_msg),
underlying_exc,
)
if not self.is_eof():
if isinstance(original_connection_error, OSError):
reraised_exc = ClientOSError(*original_connection_error.args)
if connection_closed_cleanly:
reraised_exc = ServerDisconnectedError(uncompleted)
# assigns self._should_close to True as side effect,
# we do it anyway below
underlying_non_eof_exc = (
_EXC_SENTINEL
if connection_closed_cleanly
else original_connection_error
)
assert underlying_non_eof_exc is not None
assert reraised_exc is not None
self.set_exception(reraised_exc, underlying_non_eof_exc)
self._should_close = True
self._parser = None
self._payload = None
self._payload_parser = None
self._reading_paused = False
super().connection_lost(reraised_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,
exc_cause: BaseException = _EXC_SENTINEL,
) -> None:
self._should_close = True
self._drop_timeout()
super().set_exception(exc, exc_cause)
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: Optional[BaseTimerContext] = None,
skip_payload: bool = False,
read_until_eof: bool = False,
auto_decompress: bool = True,
read_timeout: Optional[float] = None,
read_bufsize: int = 2**16,
timeout_ceil_threshold: float = 5,
max_line_size: int = 8190,
max_field_size: int = 8190,
) -> None:
self._skip_payload = skip_payload
self._read_timeout = read_timeout
self._timeout_ceil_threshold = timeout_ceil_threshold
self._parser = HttpResponseParser(
self,
self._loop,
read_bufsize,
timer=timer,
payload_exception=ClientPayloadError,
response_with_body=not skip_payload,
read_until_eof=read_until_eof,
auto_decompress=auto_decompress,
max_line_size=max_line_size,
max_field_size=max_field_size,
)
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 start_timeout(self) -> None:
self._reschedule_timeout()
def _on_read_timeout(self) -> None:
exc = ServerTimeoutError("Timeout on reading data from socket")
self.set_exception(exc)
if self._payload is not None:
set_exception(self._payload, 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 underlying_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(HttpProcessingError(), underlying_exc)
return
self._upgraded = upgraded
payload: Optional[StreamReader] = None
for message, payload in messages:
if message.should_close:
self._should_close = True
self._payload = payload
if self._skip_payload or status_code_must_be_empty_body(
message.code
):
self.feed_data((message, EMPTY_PAYLOAD), 0)
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
import sys
from typing import Any, Optional, cast
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,
WSCloseCode,
WSMessage,
WSMsgType,
)
from .http_websocket import WebSocketWriter # WSMessage
from .streams import EofStream, FlowControlDataQueue
from .typedefs import (
DEFAULT_JSON_DECODER,
DEFAULT_JSON_ENCODER,
JSONDecoder,
JSONEncoder,
)
if sys.version_info >= (3, 11):
import asyncio as async_timeout
else:
import async_timeout
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: Optional[int] = None
self._timeout = timeout
self._receive_timeout = receive_timeout
self._autoclose = autoclose
self._autoping = autoping
self._heartbeat = heartbeat
self._heartbeat_cb: Optional[asyncio.TimerHandle] = None
if heartbeat is not None:
self._pong_heartbeat = heartbeat / 2.0
self._pong_response_cb: Optional[asyncio.TimerHandle] = None
self._loop = loop
self._waiting: Optional[asyncio.Future[bool]] = None
self._exception: Optional[BaseException] = None
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,
timeout_ceil_threshold=self._conn._connector._timeout_ceil_threshold
if self._conn is not None
else 5,
)
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,
timeout_ceil_threshold=self._conn._connector._timeout_ceil_threshold
if self._conn is not None
else 5,
)
def _pong_not_received(self) -> None:
if not self._closed:
self._closed = True
self._close_code = WSCloseCode.ABNORMAL_CLOSURE
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 = WSCloseCode.OK, 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._closing:
self._closing = True
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 = WSCloseCode.ABNORMAL_CLOSURE
self._response.close()
raise
except Exception as exc:
self._close_code = WSCloseCode.ABNORMAL_CLOSURE
self._exception = exc
self._response.close()
return True
if self._close_code:
self._response.close()
return True
while True:
try:
async with async_timeout.timeout(self._timeout):
msg = await self._reader.read()
except asyncio.CancelledError:
self._close_code = WSCloseCode.ABNORMAL_CLOSURE
self._response.close()
raise
except Exception as exc:
self._close_code = WSCloseCode.ABNORMAL_CLOSURE
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:
async with async_timeout.timeout(timeout or self._receive_timeout):
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 = WSCloseCode.ABNORMAL_CLOSURE
raise
except EofStream:
self._close_code = WSCloseCode.OK
await self.close()
return WSMessage(WSMsgType.CLOSED, None, None)
except ClientError:
self._closed = True
self._close_code = WSCloseCode.ABNORMAL_CLOSURE
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 = WSCloseCode.ABNORMAL_CLOSURE
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(f"Received message {msg.type}:{msg.data!r} is not str")
return cast(str, msg.data)
async def receive_bytes(self, *, timeout: Optional[float] = None) -> bytes:
msg = await self.receive(timeout)
if msg.type != WSMsgType.BINARY:
raise TypeError(f"Received message {msg.type}:{msg.data!r} is not bytes")
return cast(bytes, 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
return msg

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import asyncio
import zlib
from concurrent.futures import Executor
from typing import Optional, cast
try:
try:
import brotlicffi as brotli
except ImportError:
import brotli
HAS_BROTLI = True
except ImportError: # pragma: no cover
HAS_BROTLI = False
MAX_SYNC_CHUNK_SIZE = 1024
def encoding_to_mode(
encoding: Optional[str] = None,
suppress_deflate_header: bool = False,
) -> int:
if encoding == "gzip":
return 16 + zlib.MAX_WBITS
return -zlib.MAX_WBITS if suppress_deflate_header else zlib.MAX_WBITS
class ZlibBaseHandler:
def __init__(
self,
mode: int,
executor: Optional[Executor] = None,
max_sync_chunk_size: Optional[int] = MAX_SYNC_CHUNK_SIZE,
):
self._mode = mode
self._executor = executor
self._max_sync_chunk_size = max_sync_chunk_size
class ZLibCompressor(ZlibBaseHandler):
def __init__(
self,
encoding: Optional[str] = None,
suppress_deflate_header: bool = False,
level: Optional[int] = None,
wbits: Optional[int] = None,
strategy: int = zlib.Z_DEFAULT_STRATEGY,
executor: Optional[Executor] = None,
max_sync_chunk_size: Optional[int] = MAX_SYNC_CHUNK_SIZE,
):
super().__init__(
mode=encoding_to_mode(encoding, suppress_deflate_header)
if wbits is None
else wbits,
executor=executor,
max_sync_chunk_size=max_sync_chunk_size,
)
if level is None:
self._compressor = zlib.compressobj(wbits=self._mode, strategy=strategy)
else:
self._compressor = zlib.compressobj(
wbits=self._mode, strategy=strategy, level=level
)
self._compress_lock = asyncio.Lock()
def compress_sync(self, data: bytes) -> bytes:
return self._compressor.compress(data)
async def compress(self, data: bytes) -> bytes:
async with self._compress_lock:
# To ensure the stream is consistent in the event
# there are multiple writers, we need to lock
# the compressor so that only one writer can
# compress at a time.
if (
self._max_sync_chunk_size is not None
and len(data) > self._max_sync_chunk_size
):
return await asyncio.get_event_loop().run_in_executor(
self._executor, self.compress_sync, data
)
return self.compress_sync(data)
def flush(self, mode: int = zlib.Z_FINISH) -> bytes:
return self._compressor.flush(mode)
class ZLibDecompressor(ZlibBaseHandler):
def __init__(
self,
encoding: Optional[str] = None,
suppress_deflate_header: bool = False,
executor: Optional[Executor] = None,
max_sync_chunk_size: Optional[int] = MAX_SYNC_CHUNK_SIZE,
):
super().__init__(
mode=encoding_to_mode(encoding, suppress_deflate_header),
executor=executor,
max_sync_chunk_size=max_sync_chunk_size,
)
self._decompressor = zlib.decompressobj(wbits=self._mode)
def decompress_sync(self, data: bytes, max_length: int = 0) -> bytes:
return self._decompressor.decompress(data, max_length)
async def decompress(self, data: bytes, max_length: int = 0) -> bytes:
if (
self._max_sync_chunk_size is not None
and len(data) > self._max_sync_chunk_size
):
return await asyncio.get_event_loop().run_in_executor(
self._executor, self.decompress_sync, data, max_length
)
return self.decompress_sync(data, max_length)
def flush(self, length: int = 0) -> bytes:
return (
self._decompressor.flush(length)
if length > 0
else self._decompressor.flush()
)
@property
def eof(self) -> bool:
return self._decompressor.eof
@property
def unconsumed_tail(self) -> bytes:
return self._decompressor.unconsumed_tail
@property
def unused_data(self) -> bytes:
return self._decompressor.unused_data
class BrotliDecompressor:
# Supports both 'brotlipy' and 'Brotli' packages
# since they share an import name. The top branches
# are for 'brotlipy' and bottom branches for 'Brotli'
def __init__(self) -> None:
if not HAS_BROTLI:
raise RuntimeError(
"The brotli decompression is not available. "
"Please install `Brotli` module"
)
self._obj = brotli.Decompressor()
def decompress_sync(self, data: bytes) -> bytes:
if hasattr(self._obj, "decompress"):
return cast(bytes, self._obj.decompress(data))
return cast(bytes, self._obj.process(data))
def flush(self) -> bytes:
if hasattr(self._obj, "flush"):
return cast(bytes, self._obj.flush())
return b""

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import asyncio
import calendar
import contextlib
import datetime
import os # noqa
import pathlib
import pickle
import re
import time
from collections import defaultdict
from http.cookies import BaseCookie, Morsel, SimpleCookie
from math import ceil
from typing import ( # noqa
DefaultDict,
Dict,
Iterable,
Iterator,
List,
Mapping,
Optional,
Set,
Tuple,
Union,
cast,
)
from yarl import URL
from .abc import AbstractCookieJar, ClearCookiePredicate
from .helpers import is_ip_address
from .typedefs import LooseCookies, PathLike, StrOrURL
__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})")
# calendar.timegm() fails for timestamps after datetime.datetime.max
# Minus one as a loss of precision occurs when timestamp() is called.
MAX_TIME = (
int(datetime.datetime.max.replace(tzinfo=datetime.timezone.utc).timestamp()) - 1
)
try:
calendar.timegm(time.gmtime(MAX_TIME))
except (OSError, ValueError):
# Hit the maximum representable time on Windows
# https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/localtime-localtime32-localtime64
# Throws ValueError on PyPy 3.8 and 3.9, OSError elsewhere
MAX_TIME = calendar.timegm((3000, 12, 31, 23, 59, 59, -1, -1, -1))
except OverflowError:
# #4515: datetime.max may not be representable on 32-bit platforms
MAX_TIME = 2**31 - 1
# Avoid minuses in the future, 3x faster
SUB_MAX_TIME = MAX_TIME - 1
def __init__(
self,
*,
unsafe: bool = False,
quote_cookie: bool = True,
treat_as_secure_origin: Union[StrOrURL, List[StrOrURL], None] = None,
loop: Optional[asyncio.AbstractEventLoop] = None,
) -> None:
super().__init__(loop=loop)
self._cookies: DefaultDict[Tuple[str, str], SimpleCookie] = defaultdict(
SimpleCookie
)
self._host_only_cookies: Set[Tuple[str, str]] = set()
self._unsafe = unsafe
self._quote_cookie = quote_cookie
if treat_as_secure_origin is None:
treat_as_secure_origin = []
elif isinstance(treat_as_secure_origin, URL):
treat_as_secure_origin = [treat_as_secure_origin.origin()]
elif isinstance(treat_as_secure_origin, str):
treat_as_secure_origin = [URL(treat_as_secure_origin).origin()]
else:
treat_as_secure_origin = [
URL(url).origin() if isinstance(url, str) else url.origin()
for url in treat_as_secure_origin
]
self._treat_as_secure_origin = treat_as_secure_origin
self._next_expiration: float = ceil(time.time())
self._expirations: Dict[Tuple[str, str, str], float] = {}
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, predicate: Optional[ClearCookiePredicate] = None) -> None:
if predicate is None:
self._next_expiration = ceil(time.time())
self._cookies.clear()
self._host_only_cookies.clear()
self._expirations.clear()
return
to_del = []
now = time.time()
for (domain, path), cookie in self._cookies.items():
for name, morsel in cookie.items():
key = (domain, path, name)
if (
key in self._expirations and self._expirations[key] <= now
) or predicate(morsel):
to_del.append(key)
for domain, path, name in to_del:
self._host_only_cookies.discard((domain, name))
key = (domain, path, name)
if key in self._expirations:
del self._expirations[(domain, path, name)]
self._cookies[(domain, path)].pop(name, None)
self._next_expiration = (
min(*self._expirations.values(), self.SUB_MAX_TIME) + 1
if self._expirations
else self.MAX_TIME
)
def clear_domain(self, domain: str) -> None:
self.clear(lambda x: self._is_domain_match(domain, x["domain"]))
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:
self.clear(lambda x: False)
def _expire_cookie(self, when: float, domain: str, path: str, name: str) -> None:
self._next_expiration = min(self._next_expiration, when)
self._expirations[(domain, path, 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()
for name, cookie in cookies:
if not isinstance(cookie, Morsel):
tmp = SimpleCookie()
tmp[name] = cookie # type: ignore[assignment]
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)
max_age_expiration = min(time.time() + delta_seconds, self.MAX_TIME)
self._expire_cookie(max_age_expiration, domain, path, 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, path, name)
else:
cookie["expires"] = ""
self._cookies[(domain, path)][name] = cookie
self._do_expiration()
def filter_cookies(self, request_url: URL = URL()) -> "BaseCookie[str]":
"""Returns this jar's cookies filtered by their attributes."""
filtered: Union[SimpleCookie, "BaseCookie[str]"] = (
SimpleCookie() if self._quote_cookie else BaseCookie()
)
if not self._cookies:
# Skip do_expiration() if there are no cookies.
return filtered
self._do_expiration()
if not self._cookies:
# Skip rest of function if no non-expired cookies.
return filtered
request_url = URL(request_url)
hostname = request_url.raw_host or ""
is_not_secure = request_url.scheme not in ("https", "wss")
if is_not_secure and self._treat_as_secure_origin:
request_origin = URL()
with contextlib.suppress(ValueError):
request_origin = request_url.origin()
is_not_secure = request_origin not in self._treat_as_secure_origin
# Point 2: https://www.rfc-editor.org/rfc/rfc6265.html#section-5.4
for cookie in sorted(self, key=lambda c: len(c["path"])):
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[int]:
"""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 calendar.timegm((year, month, day, hour, minute, second, -1, -1, -1))
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, predicate: Optional[ClearCookiePredicate] = None) -> None:
pass
def clear_domain(self, domain: str) -> 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
import warnings
from typing import Any, Iterable, List, Optional
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 form body generation.
Supports multipart/form-data and application/x-www-form-urlencoded.
"""
def __init__(
self,
fields: Iterable[Any] = (),
quote_fields: bool = True,
charset: Optional[str] = None,
) -> None:
self._writer = multipart.MultipartWriter("form-data")
self._fields: List[Any] = []
self._is_multipart = False
self._is_processed = 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)):
msg = (
"In v4, passing bytes will no longer create a file field. "
"Please explicitly use the filename parameter or pass a BytesIO object."
)
if filename is None and content_transfer_encoding is None:
warnings.warn(msg, DeprecationWarning)
filename = name
type_options: MultiDict[str] = 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
)
msg = (
"content_transfer_encoding is deprecated. "
"To maintain compatibility with v4 please pass a BytesPayload."
)
warnings.warn(msg, DeprecationWarning)
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[arg-type]
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[arg-type]
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"""
if self._is_processed:
raise RuntimeError("Form data has been processed already")
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)
self._is_processed = True
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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"""HTTP Headers constants."""
# After changing the file content call ./tools/gen.py
# to regenerate the headers parser
from typing import Final, Set
from multidict import istr
METH_ANY: Final[str] = "*"
METH_CONNECT: Final[str] = "CONNECT"
METH_HEAD: Final[str] = "HEAD"
METH_GET: Final[str] = "GET"
METH_DELETE: Final[str] = "DELETE"
METH_OPTIONS: Final[str] = "OPTIONS"
METH_PATCH: Final[str] = "PATCH"
METH_POST: Final[str] = "POST"
METH_PUT: Final[str] = "PUT"
METH_TRACE: Final[str] = "TRACE"
METH_ALL: Final[Set[str]] = {
METH_CONNECT,
METH_HEAD,
METH_GET,
METH_DELETE,
METH_OPTIONS,
METH_PATCH,
METH_POST,
METH_PUT,
METH_TRACE,
}
ACCEPT: Final[istr] = istr("Accept")
ACCEPT_CHARSET: Final[istr] = istr("Accept-Charset")
ACCEPT_ENCODING: Final[istr] = istr("Accept-Encoding")
ACCEPT_LANGUAGE: Final[istr] = istr("Accept-Language")
ACCEPT_RANGES: Final[istr] = istr("Accept-Ranges")
ACCESS_CONTROL_MAX_AGE: Final[istr] = istr("Access-Control-Max-Age")
ACCESS_CONTROL_ALLOW_CREDENTIALS: Final[istr] = istr("Access-Control-Allow-Credentials")
ACCESS_CONTROL_ALLOW_HEADERS: Final[istr] = istr("Access-Control-Allow-Headers")
ACCESS_CONTROL_ALLOW_METHODS: Final[istr] = istr("Access-Control-Allow-Methods")
ACCESS_CONTROL_ALLOW_ORIGIN: Final[istr] = istr("Access-Control-Allow-Origin")
ACCESS_CONTROL_EXPOSE_HEADERS: Final[istr] = istr("Access-Control-Expose-Headers")
ACCESS_CONTROL_REQUEST_HEADERS: Final[istr] = istr("Access-Control-Request-Headers")
ACCESS_CONTROL_REQUEST_METHOD: Final[istr] = istr("Access-Control-Request-Method")
AGE: Final[istr] = istr("Age")
ALLOW: Final[istr] = istr("Allow")
AUTHORIZATION: Final[istr] = istr("Authorization")
CACHE_CONTROL: Final[istr] = istr("Cache-Control")
CONNECTION: Final[istr] = istr("Connection")
CONTENT_DISPOSITION: Final[istr] = istr("Content-Disposition")
CONTENT_ENCODING: Final[istr] = istr("Content-Encoding")
CONTENT_LANGUAGE: Final[istr] = istr("Content-Language")
CONTENT_LENGTH: Final[istr] = istr("Content-Length")
CONTENT_LOCATION: Final[istr] = istr("Content-Location")
CONTENT_MD5: Final[istr] = istr("Content-MD5")
CONTENT_RANGE: Final[istr] = istr("Content-Range")
CONTENT_TRANSFER_ENCODING: Final[istr] = istr("Content-Transfer-Encoding")
CONTENT_TYPE: Final[istr] = istr("Content-Type")
COOKIE: Final[istr] = istr("Cookie")
DATE: Final[istr] = istr("Date")
DESTINATION: Final[istr] = istr("Destination")
DIGEST: Final[istr] = istr("Digest")
ETAG: Final[istr] = istr("Etag")
EXPECT: Final[istr] = istr("Expect")
EXPIRES: Final[istr] = istr("Expires")
FORWARDED: Final[istr] = istr("Forwarded")
FROM: Final[istr] = istr("From")
HOST: Final[istr] = istr("Host")
IF_MATCH: Final[istr] = istr("If-Match")
IF_MODIFIED_SINCE: Final[istr] = istr("If-Modified-Since")
IF_NONE_MATCH: Final[istr] = istr("If-None-Match")
IF_RANGE: Final[istr] = istr("If-Range")
IF_UNMODIFIED_SINCE: Final[istr] = istr("If-Unmodified-Since")
KEEP_ALIVE: Final[istr] = istr("Keep-Alive")
LAST_EVENT_ID: Final[istr] = istr("Last-Event-ID")
LAST_MODIFIED: Final[istr] = istr("Last-Modified")
LINK: Final[istr] = istr("Link")
LOCATION: Final[istr] = istr("Location")
MAX_FORWARDS: Final[istr] = istr("Max-Forwards")
ORIGIN: Final[istr] = istr("Origin")
PRAGMA: Final[istr] = istr("Pragma")
PROXY_AUTHENTICATE: Final[istr] = istr("Proxy-Authenticate")
PROXY_AUTHORIZATION: Final[istr] = istr("Proxy-Authorization")
RANGE: Final[istr] = istr("Range")
REFERER: Final[istr] = istr("Referer")
RETRY_AFTER: Final[istr] = istr("Retry-After")
SEC_WEBSOCKET_ACCEPT: Final[istr] = istr("Sec-WebSocket-Accept")
SEC_WEBSOCKET_VERSION: Final[istr] = istr("Sec-WebSocket-Version")
SEC_WEBSOCKET_PROTOCOL: Final[istr] = istr("Sec-WebSocket-Protocol")
SEC_WEBSOCKET_EXTENSIONS: Final[istr] = istr("Sec-WebSocket-Extensions")
SEC_WEBSOCKET_KEY: Final[istr] = istr("Sec-WebSocket-Key")
SEC_WEBSOCKET_KEY1: Final[istr] = istr("Sec-WebSocket-Key1")
SERVER: Final[istr] = istr("Server")
SET_COOKIE: Final[istr] = istr("Set-Cookie")
TE: Final[istr] = istr("TE")
TRAILER: Final[istr] = istr("Trailer")
TRANSFER_ENCODING: Final[istr] = istr("Transfer-Encoding")
UPGRADE: Final[istr] = istr("Upgrade")
URI: Final[istr] = istr("URI")
USER_AGENT: Final[istr] = istr("User-Agent")
VARY: Final[istr] = istr("Vary")
VIA: Final[istr] = istr("Via")
WANT_DIGEST: Final[istr] = istr("Want-Digest")
WARNING: Final[istr] = istr("Warning")
WWW_AUTHENTICATE: Final[istr] = istr("WWW-Authenticate")
X_FORWARDED_FOR: Final[istr] = istr("X-Forwarded-For")
X_FORWARDED_HOST: Final[istr] = istr("X-Forwarded-Host")
X_FORWARDED_PROTO: Final[istr] = istr("X-Forwarded-Proto")

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import sys
from http import HTTPStatus
from typing import Mapping, Tuple
from . import __version__
from .http_exceptions import HttpProcessingError as HttpProcessingError
from .http_parser import (
HeadersParser as HeadersParser,
HttpParser as HttpParser,
HttpRequestParser as HttpRequestParser,
HttpResponseParser as HttpResponseParser,
RawRequestMessage as RawRequestMessage,
RawResponseMessage as RawResponseMessage,
)
from .http_websocket import (
WS_CLOSED_MESSAGE as WS_CLOSED_MESSAGE,
WS_CLOSING_MESSAGE as WS_CLOSING_MESSAGE,
WS_KEY as WS_KEY,
WebSocketError as WebSocketError,
WebSocketReader as WebSocketReader,
WebSocketWriter as WebSocketWriter,
WSCloseCode as WSCloseCode,
WSMessage as WSMessage,
WSMsgType as WSMsgType,
ws_ext_gen as ws_ext_gen,
ws_ext_parse as ws_ext_parse,
)
from .http_writer import (
HttpVersion as HttpVersion,
HttpVersion10 as HttpVersion10,
HttpVersion11 as HttpVersion11,
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: str = "Python/{0[0]}.{0[1]} aiohttp/{1}".format(
sys.version_info, __version__
)
RESPONSES: Mapping[int, Tuple[str, str]] = {
v: (v.phrase, v.description) for v in HTTPStatus.__members__.values()
}

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"""Low-level http related exceptions."""
from textwrap import indent
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:
msg = indent(self.message, " ")
return f"{self.code}, message:\n{msg}"
def __repr__(self) -> str:
return f"<{self.__class__.__name__}: {self.code}, message={self.message!r}>"
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__(
f"Got more than {limit} bytes ({actual_size}) when reading {line}."
)
self.args = (line, limit, actual_size)
class InvalidHeader(BadHttpMessage):
def __init__(self, hdr: Union[bytes, str]) -> None:
hdr_s = hdr.decode(errors="backslashreplace") if isinstance(hdr, bytes) else hdr
super().__init__(f"Invalid HTTP header: {hdr!r}")
self.hdr = hdr_s
self.args = (hdr,)
class BadStatusLine(BadHttpMessage):
def __init__(self, line: str = "", error: Optional[str] = None) -> None:
if not isinstance(line, str):
line = repr(line)
super().__init__(error or f"Bad status line {line!r}")
self.args = (line,)
self.line = line
class InvalidURLError(BadHttpMessage):
pass

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"""WebSocket protocol versions 13 and 8."""
import asyncio
import functools
import json
import random
import re
import sys
import zlib
from enum import IntEnum
from struct import Struct
from typing import (
Any,
Callable,
Final,
List,
NamedTuple,
Optional,
Pattern,
Set,
Tuple,
Union,
cast,
)
from .base_protocol import BaseProtocol
from .compression_utils import ZLibCompressor, ZLibDecompressor
from .helpers import NO_EXTENSIONS, set_exception
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
ABNORMAL_CLOSURE = 1006
INVALID_TEXT = 1007
POLICY_VIOLATION = 1008
MESSAGE_TOO_BIG = 1009
MANDATORY_EXTENSION = 1010
INTERNAL_ERROR = 1011
SERVICE_RESTART = 1012
TRY_AGAIN_LATER = 1013
BAD_GATEWAY = 1014
ALLOWED_CLOSE_CODES: Final[Set[int]] = {int(i) for i in WSCloseCode}
# For websockets, keeping latency low is extremely important as implementations
# generally expect to be able to send and receive messages quickly. We use a
# larger chunk size than the default to reduce the number of executor calls
# since the executor is a significant source of latency and overhead when
# the chunks are small. A size of 5KiB was chosen because it is also the
# same value python-zlib-ng choose to use as the threshold to release the GIL.
WEBSOCKET_MAX_SYNC_CHUNK_SIZE = 5 * 1024
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: Final[bytes] = 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: Final[int] = 2**14
DEFAULT_LIMIT: Final[int] = 2**16
class WSMessage(NamedTuple):
type: WSMsgType
# To type correctly, this would need some kind of tagged union for each type.
data: Any
extra: Optional[str]
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 cast(str, self.args[1])
class WSHandshakeError(Exception):
"""WebSocket protocol handshake error."""
native_byteorder: Final[str] = sys.byteorder
# Used by _websocket_mask_python
@functools.lru_cache
def _xor_table() -> List[bytes]:
return [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:
_XOR_TABLE = _xor_table()
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[import-not-found]
_websocket_mask = _websocket_mask_cython
except ImportError: # pragma: no cover
_websocket_mask = _websocket_mask_python
_WS_DEFLATE_TRAILING: Final[bytes] = bytes([0x00, 0x00, 0xFF, 0xFF])
_WS_EXT_RE: Final[Pattern[str]] = 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: Final[Pattern[str]] = re.compile(r"permessage-deflate([^,]+)?")
def ws_ext_parse(extstr: Optional[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: Optional[BaseException] = None
self._partial = bytearray()
self._state = WSParserState.READ_HEADER
self._opcode: Optional[int] = None
self._frame_fin = False
self._frame_opcode: Optional[int] = None
self._frame_payload = bytearray()
self._tail = b""
self._has_mask = False
self._frame_mask: Optional[bytes] = None
self._payload_length = 0
self._payload_length_flag = 0
self._compressed: Optional[bool] = None
self._decompressobj: Optional[ZLibDecompressor] = None
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
set_exception(self.queue, 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 = ZLibDecompressor(suppress_deflate_header=True)
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,
f"Invalid close code: {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,
f"Invalid close frame: {fin} {opcode} {payload!r}",
)
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, f"Unexpected opcode={opcode!r}"
)
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:
assert self._decompressobj is not None
self._partial.extend(_WS_DEFLATE_TRAILING)
payload_merged = self._decompressobj.decompress_sync(
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: random.Random = 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: Any = None # 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 and not (opcode & WSMsgType.CLOSE):
raise ConnectionResetError("Cannot write to closing transport")
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 = self._make_compress_obj(compress)
else: # self.compress
if not self._compressobj:
self._compressobj = self._make_compress_obj(self.compress)
compressobj = self._compressobj
message = await compressobj.compress(message)
# Its critical that we do not return control to the event
# loop until we have finished sending all the compressed
# data. Otherwise we could end up mixing compressed frames
# if there are multiple coroutines compressing data.
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_int = self.randrange(0, 0xFFFFFFFF)
mask = mask_int.to_bytes(4, "big")
message = bytearray(message)
_websocket_mask(mask, message)
self._write(header + mask + message)
self._output_size += len(header) + len(mask) + msg_length
else:
if msg_length > MSG_SIZE:
self._write(header)
self._write(message)
else:
self._write(header + message)
self._output_size += len(header) + msg_length
# It is safe to return control to the event loop when using compression
# after this point as we have already sent or buffered all the data.
if self._output_size > self._limit:
self._output_size = 0
await self.protocol._drain_helper()
def _make_compress_obj(self, compress: int) -> ZLibCompressor:
return ZLibCompressor(
level=zlib.Z_BEST_SPEED,
wbits=-compress,
max_sync_chunk_size=WEBSOCKET_MAX_SYNC_CHUNK_SIZE,
)
def _write(self, data: bytes) -> None:
if self.transport is None or self.transport.is_closing():
raise ConnectionResetError("Cannot write to closing transport")
self.transport.write(data)
async def pong(self, message: Union[bytes, str] = 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: Union[bytes, str] = 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: Union[bytes, str] = 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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@ -0,0 +1,198 @@
"""Http related parsers and protocol."""
import asyncio
import zlib
from typing import Any, Awaitable, Callable, NamedTuple, Optional, Union # noqa
from multidict import CIMultiDict
from .abc import AbstractStreamWriter
from .base_protocol import BaseProtocol
from .compression_utils import ZLibCompressor
from .helpers import NO_EXTENSIONS
__all__ = ("StreamWriter", "HttpVersion", "HttpVersion10", "HttpVersion11")
class HttpVersion(NamedTuple):
major: int
minor: int
HttpVersion10 = HttpVersion(1, 0)
HttpVersion11 = HttpVersion(1, 1)
_T_OnChunkSent = Optional[Callable[[bytes], Awaitable[None]]]
_T_OnHeadersSent = Optional[Callable[["CIMultiDict[str]"], Awaitable[None]]]
class StreamWriter(AbstractStreamWriter):
def __init__(
self,
protocol: BaseProtocol,
loop: asyncio.AbstractEventLoop,
on_chunk_sent: _T_OnChunkSent = None,
on_headers_sent: _T_OnHeadersSent = None,
) -> None:
self._protocol = protocol
self.loop = loop
self.length = None
self.chunked = False
self.buffer_size = 0
self.output_size = 0
self._eof = False
self._compress: Optional[ZLibCompressor] = None
self._drain_waiter = None
self._on_chunk_sent: _T_OnChunkSent = on_chunk_sent
self._on_headers_sent: _T_OnHeadersSent = on_headers_sent
@property
def transport(self) -> Optional[asyncio.Transport]:
return self._protocol.transport
@property
def protocol(self) -> BaseProtocol:
return self._protocol
def enable_chunking(self) -> None:
self.chunked = True
def enable_compression(
self, encoding: str = "deflate", strategy: int = zlib.Z_DEFAULT_STRATEGY
) -> None:
self._compress = ZLibCompressor(encoding=encoding, strategy=strategy)
def _write(self, chunk: bytes) -> None:
size = len(chunk)
self.buffer_size += size
self.output_size += size
transport = self.transport
if not self._protocol.connected or transport is None or transport.is_closing():
raise ConnectionResetError("Cannot write to closing transport")
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 isinstance(chunk, memoryview):
if chunk.nbytes != len(chunk):
# just reshape it
chunk = chunk.cast("c")
if self._compress is not None:
chunk = await 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."""
if self._on_headers_sent is not None:
await self._on_headers_sent(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 = await self._compress.compress(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
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 _safe_header(string: str) -> str:
if "\r" in string or "\n" in string:
raise ValueError(
"Newline or carriage return detected in headers. "
"Potential header injection attack."
)
return string
def _py_serialize_headers(status_line: str, headers: "CIMultiDict[str]") -> bytes:
headers_gen = (_safe_header(k) + ": " + _safe_header(v) for k, v in headers.items())
line = status_line + "\r\n" + "\r\n".join(headers_gen) + "\r\n\r\n"
return line.encode("utf-8")
_serialize_headers = _py_serialize_headers
try:
import aiohttp._http_writer as _http_writer # type: ignore[import-not-found]
_c_serialize_headers = _http_writer._serialize_headers
if not NO_EXTENSIONS:
_serialize_headers = _c_serialize_headers
except ImportError:
pass

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import asyncio
import collections
from typing import Any, Deque, Optional
class EventResultOrError:
"""Event asyncio lock helper class.
Wraps the Event asyncio lock allowing either to 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: Optional[BaseException] = None
self._event = asyncio.Event()
self._waiters: Deque[asyncio.Future[Any]] = collections.deque()
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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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")

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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,
Final,
Iterable,
Optional,
TextIO,
Tuple,
Type,
Union,
)
from multidict import CIMultiDict
from . import hdrs
from .abc import AbstractStreamWriter
from .helpers import (
_SENTINEL,
content_disposition_header,
guess_filename,
parse_mimetype,
sentinel,
)
from .streams import 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: Final[int] = 2**20 # 1 MB
if TYPE_CHECKING:
from typing import List
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
PayloadType = Type["Payload"]
_PayloadRegistryItem = Tuple[PayloadType, Any]
class PayloadRegistry:
"""Payload registry.
note: we need zope.interface for more efficient adapter search
"""
def __init__(self) -> None:
self._first: List[_PayloadRegistryItem] = []
self._normal: List[_PayloadRegistryItem] = []
self._last: List[_PayloadRegistryItem] = []
def get(
self,
data: Any,
*args: Any,
_CHAIN: "Type[chain[_PayloadRegistryItem]]" = 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: PayloadType, 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(f"Unsupported order {order!r}")
class Payload(ABC):
_default_content_type: str = "application/octet-stream"
_size: Optional[int] = None
def __init__(
self,
value: Any,
headers: Optional[
Union[_CIMultiDict, Dict[str, str], Iterable[Tuple[str, str]]]
] = None,
content_type: Union[str, None, _SENTINEL] = sentinel,
filename: Optional[str] = None,
encoding: Optional[str] = None,
**kwargs: Any,
) -> None:
self._encoding = encoding
self._filename = filename
self._headers: _CIMultiDict = 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,
_charset: str = "utf-8",
**params: Any,
) -> None:
"""Sets ``Content-Disposition`` header."""
self._headers[hdrs.CONTENT_DISPOSITION] = content_disposition_header(
disptype, quote_fields=quote_fields, _charset=_charset, **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(f"value argument must be byte-ish, not {type(value)!r}")
if "content_type" not in kwargs:
kwargs["content_type"] = "application/octet-stream"
super().__init__(value, *args, **kwargs)
if isinstance(value, memoryview):
self._size = value.nbytes
else:
self._size = len(value)
if self._size > TOO_LARGE_BYTES_BODY:
kwargs = {"source": self}
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: str,
*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):
_value: IO[Any]
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, 2**16)
while chunk:
await writer.write(chunk)
chunk = await loop.run_in_executor(None, self._value.read, 2**16)
finally:
await loop.run_in_executor(None, self._value.close)
class TextIOPayload(IOBasePayload):
_value: TextIO
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, 2**16)
while chunk:
data = (
chunk.encode(encoding=self._encoding)
if self._encoding
else chunk.encode()
)
await writer.write(data)
chunk = await loop.run_in_executor(None, self._value.read, 2**16)
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:
from typing import AsyncIterable, AsyncIterator
_AsyncIterator = AsyncIterator[bytes]
_AsyncIterable = AsyncIterable[bytes]
else:
from collections.abc import AsyncIterable, AsyncIterator
_AsyncIterator = AsyncIterator
_AsyncIterable = AsyncIterable
class AsyncIterablePayload(Payload):
_iter: Optional[_AsyncIterator] = None
def __init__(self, value: _AsyncIterable, *args: Any, **kwargs: Any) -> None:
if not isinstance(value, AsyncIterable):
raise TypeError(
"value argument must support "
"collections.abc.AsyncIterable 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 implementation 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 types
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 = types.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 typing import Any, Awaitable, Callable, Dict, Iterator, Optional, Type, Union
import pytest
from aiohttp.helpers import isasyncgenfunction
from aiohttp.web import Application
from .test_utils import (
BaseTestServer,
RawTestServer,
TestClient,
TestServer,
loop_context,
setup_test_loop,
teardown_test_loop,
unused_port as _unused_port,
)
try:
import uvloop
except ImportError: # pragma: no cover
uvloop = None # type: ignore[assignment]
AiohttpClient = Callable[[Union[Application, BaseTestServer]], Awaitable[TestClient]]
AiohttpRawServer = Callable[[Application], Awaitable[RawTestServer]]
AiohttpServer = Callable[[Application], Awaitable[TestServer]]
def pytest_addoption(parser): # type: ignore[no-untyped-def]
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 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[no-untyped-def]
"""Set up pytest fixture.
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[no-untyped-def]
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[no-untyped-def]
try:
return _loop.run_until_complete(gen.__anext__())
except StopAsyncIteration:
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[no-untyped-def]
"""--fast config option"""
return request.config.getoption("--aiohttp-fast")
@pytest.fixture
def loop_debug(request): # type: ignore[no-untyped-def]
"""--enable-loop-debug config option"""
return request.config.getoption("--aiohttp-enable-loop-debug")
@contextlib.contextmanager
def _runtime_warning_context(): # type: ignore[no-untyped-def]
"""Context manager which checks for RuntimeWarnings.
This exists 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
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[no-untyped-def]
"""Passthrough loop context.
Sets up 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[no-untyped-def]
"""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[no-untyped-def]
"""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[no-untyped-def]
if "loop_factory" not in metafunc.fixturenames:
return
loops = metafunc.config.option.aiohttp_loop
avail_factories: Dict[str, Type[asyncio.AbstractEventLoopPolicy]]
avail_factories = {"pyloop": asyncio.DefaultEventLoopPolicy}
if uvloop is not None: # pragma: no cover
avail_factories["uvloop"] = uvloop.EventLoopPolicy
if loops == "all":
loops = "pyloop,uvloop?"
factories = {} # type: ignore[var-annotated]
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[no-untyped-def]
"""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[no-untyped-def]
policy = asyncio.WindowsProactorEventLoopPolicy() # type: ignore[attr-defined]
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: Callable[[], int]) -> Callable[[], int]:
warnings.warn(
"Deprecated, use aiohttp_unused_port fixture instead",
DeprecationWarning,
stacklevel=2,
)
return aiohttp_unused_port
@pytest.fixture
def aiohttp_unused_port() -> Callable[[], int]:
"""Return a port that is unused on the current host."""
return _unused_port
@pytest.fixture
def aiohttp_server(loop: asyncio.AbstractEventLoop) -> Iterator[AiohttpServer]:
"""Factory to create a TestServer instance, given an app.
aiohttp_server(app, **kwargs)
"""
servers = []
async def go(app, *, port=None, **kwargs): # type: ignore[no-untyped-def]
server = TestServer(app, port=port)
await server.start_server(loop=loop, **kwargs)
servers.append(server)
return server
yield go
async def finalize() -> None:
while servers:
await servers.pop().close()
loop.run_until_complete(finalize())
@pytest.fixture
def test_server(aiohttp_server): # type: ignore[no-untyped-def] # pragma: no cover
warnings.warn(
"Deprecated, use aiohttp_server fixture instead",
DeprecationWarning,
stacklevel=2,
)
return aiohttp_server
@pytest.fixture
def aiohttp_raw_server(loop: asyncio.AbstractEventLoop) -> Iterator[AiohttpRawServer]:
"""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[no-untyped-def]
server = RawTestServer(handler, port=port)
await server.start_server(loop=loop, **kwargs)
servers.append(server)
return server
yield go
async def finalize() -> None:
while servers:
await servers.pop().close()
loop.run_until_complete(finalize())
@pytest.fixture
def raw_test_server( # type: ignore[no-untyped-def] # pragma: no cover
aiohttp_raw_server,
):
warnings.warn(
"Deprecated, use aiohttp_raw_server fixture instead",
DeprecationWarning,
stacklevel=2,
)
return aiohttp_raw_server
@pytest.fixture
def aiohttp_client(
loop: asyncio.AbstractEventLoop,
) -> Iterator[AiohttpClient]:
"""Factory to create a TestClient instance.
aiohttp_client(app, **kwargs)
aiohttp_client(server, **kwargs)
aiohttp_client(raw_server, **kwargs)
"""
clients = []
async def go(
__param: Union[Application, BaseTestServer],
*args: Any,
server_kwargs: Optional[Dict[str, Any]] = None,
**kwargs: Any
) -> TestClient:
if isinstance(__param, Callable) and not isinstance( # type: ignore[arg-type]
__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() -> None:
while clients:
await clients.pop().close()
loop.run_until_complete(finalize())
@pytest.fixture
def test_client(aiohttp_client): # type: ignore[no-untyped-def] # pragma: no cover
warnings.warn(
"Deprecated, use aiohttp_client fixture instead",
DeprecationWarning,
stacklevel=2,
)
return aiohttp_client

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dist/ba_data/python-site-packages/aiohttp/resolver.py vendored Normal file
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import asyncio
import socket
from typing import Any, Dict, List, Optional, Type, Union
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):
"""Threaded resolver.
Uses an Executor for synchronous getaddrinfo() calls.
concurrent.futures.ThreadPoolExecutor is used by default.
"""
def __init__(self, loop: Optional[asyncio.AbstractEventLoop] = None) -> None:
self._loop = get_running_loop(loop)
async def resolve(
self, hostname: str, port: int = 0, family: int = socket.AF_INET
) -> List[Dict[str, Any]]:
infos = await self._loop.getaddrinfo(
hostname,
port,
type=socket.SOCK_STREAM,
family=family,
flags=socket.AI_ADDRCONFIG,
)
hosts = []
for family, _, proto, _, address in infos:
if family == socket.AF_INET6:
if len(address) < 3:
# IPv6 is not supported by Python build,
# or IPv6 is not enabled in the host
continue
if address[3]:
# This is essential for link-local IPv6 addresses.
# LL IPv6 is a VERY rare case. Strictly speaking, we should use
# getnameinfo() unconditionally, but performance makes sense.
host, _port = socket.getnameinfo(
address, socket.NI_NUMERICHOST | socket.NI_NUMERICSERV
)
port = int(_port)
else:
host, port = address[:2]
else: # IPv4
assert family == socket.AF_INET
host, port = address # type: ignore[misc]
hosts.append(
{
"hostname": hostname,
"host": host,
"port": port,
"family": family,
"proto": proto,
"flags": socket.AI_NUMERICHOST | socket.AI_NUMERICSERV,
}
)
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 | socket.AI_NUMERICSERV,
}
)
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:
self._resolver.cancel()
_DefaultType = Type[Union[AsyncResolver, ThreadedResolver]]
DefaultResolver: _DefaultType = AsyncResolver if aiodns_default else ThreadedResolver

684
dist/ba_data/python-site-packages/aiohttp/streams.py vendored Normal file
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import asyncio
import collections
import warnings
from typing import (
Awaitable,
Callable,
Deque,
Final,
Generic,
List,
Optional,
Tuple,
TypeVar,
)
from .base_protocol import BaseProtocol
from .helpers import (
_EXC_SENTINEL,
BaseTimerContext,
TimerNoop,
set_exception,
set_result,
)
from .log import internal_logger
__all__ = (
"EMPTY_PAYLOAD",
"EofStream",
"StreamReader",
"DataQueue",
"FlowControlDataQueue",
)
_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
if rv == b"":
raise StopAsyncIteration
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
return rv
class AsyncStreamReaderMixin:
def __aiter__(self) -> AsyncStreamIterator[bytes]:
return AsyncStreamIterator(self.readline) # type: ignore[attr-defined]
def iter_chunked(self, n: int) -> AsyncStreamIterator[bytes]:
"""Returns an asynchronous iterator that yields chunks of size n."""
return AsyncStreamIterator(lambda: self.read(n)) # type: ignore[attr-defined]
def iter_any(self) -> AsyncStreamIterator[bytes]:
"""Yield all available data as soon as it is received."""
return AsyncStreamIterator(self.readany) # type: ignore[attr-defined]
def iter_chunks(self) -> ChunkTupleAsyncStreamIterator:
"""Yield 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.
"""
return ChunkTupleAsyncStreamIterator(self) # type: ignore[arg-type]
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,
*,
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: Optional[List[int]] = None
self._buffer: Deque[bytes] = collections.deque()
self._buffer_offset = 0
self._eof = False
self._waiter: Optional[asyncio.Future[None]] = None
self._eof_waiter: Optional[asyncio.Future[None]] = None
self._exception: Optional[BaseException] = None
self._timer = TimerNoop() if timer is None else timer
self._eof_callbacks: 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 != 2**16: # 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 get_read_buffer_limits(self) -> Tuple[int, int]:
return (self._low_water, self._high_water)
def exception(self) -> Optional[BaseException]:
return self._exception
def set_exception(
self,
exc: BaseException,
exc_cause: BaseException = _EXC_SENTINEL,
) -> None:
self._exception = exc
self._eof_callbacks.clear()
waiter = self._waiter
if waiter is not None:
self._waiter = None
set_exception(waiter, exc, exc_cause)
waiter = self._eof_waiter
if waiter is not None:
self._eof_waiter = None
set_exception(waiter, exc, exc_cause)
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 containing 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:
with self._timer:
await waiter
finally:
self._waiter = None
async def readline(self) -> bytes:
return await self.readuntil()
async def readuntil(self, separator: bytes = b"\n") -> bytes:
seplen = len(separator)
if seplen == 0:
raise ValueError("Separator should be at least one-byte string")
if self._exception is not None:
raise self._exception
chunk = b""
chunk_size = 0
not_enough = True
while not_enough:
while self._buffer and not_enough:
offset = self._buffer_offset
ichar = self._buffer[0].find(separator, offset) + 1
# Read from current offset to found separator or to the end.
data = self._read_nowait_chunk(
ichar - offset + seplen - 1 if ichar else -1
)
chunk += data
chunk_size += len(data)
if ichar:
not_enough = False
if chunk_size > self._high_water:
raise ValueError("Chunk too big")
if self._eof:
break
if not_enough:
await self._wait("readuntil")
return chunk
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: 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 if n == -1"""
self._timer.assert_timeout()
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(StreamReader): # lgtm [py/missing-call-to-init]
def __init__(self) -> None:
self._read_eof_chunk = False
def __repr__(self) -> str:
return "<%s>" % self.__class__.__name__
def exception(self) -> Optional[BaseException]:
return None
def set_exception(
self,
exc: BaseException,
exc_cause: BaseException = _EXC_SENTINEL,
) -> 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""
# TODO add async def readuntil
async def readany(self) -> bytes:
return b""
async def readchunk(self) -> Tuple[bytes, bool]:
if not self._read_eof_chunk:
self._read_eof_chunk = True
return (b"", False)
return (b"", True)
async def readexactly(self, n: int) -> bytes:
raise asyncio.IncompleteReadError(b"", n)
def read_nowait(self, n: int = -1) -> bytes:
return b""
EMPTY_PAYLOAD: Final[StreamReader] = 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: Optional[asyncio.Future[None]] = None
self._exception: Optional[BaseException] = None
self._size = 0
self._buffer: Deque[Tuple[_T, int]] = collections.deque()
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,
exc_cause: BaseException = _EXC_SENTINEL,
) -> None:
self._eof = True
self._exception = exc
waiter = self._waiter
if waiter is not None:
self._waiter = None
set_exception(waiter, exc, exc_cause)
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, *, 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")
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)

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"""Utilities shared by tests."""
import asyncio
import contextlib
import gc
import inspect
import ipaddress
import os
import socket
import sys
import warnings
from abc import ABC, abstractmethod
from types import TracebackType
from typing import (
TYPE_CHECKING,
Any,
Callable,
Iterator,
List,
Optional,
Type,
Union,
cast,
)
from unittest import IsolatedAsyncioTestCase, mock
from aiosignal import Signal
from multidict import CIMultiDict, CIMultiDictProxy
from yarl import URL
import aiohttp
from aiohttp.client import _RequestContextManager, _WSRequestContextManager
from . import ClientSession, hdrs
from .abc import AbstractCookieJar
from .client_reqrep import ClientResponse
from .client_ws import ClientWebSocketResponse
from .helpers import sentinel
from .http import HttpVersion, RawRequestMessage
from .typedefs import StrOrURL
from .web import (
Application,
AppRunner,
BaseRunner,
Request,
Server,
ServerRunner,
SockSite,
UrlMappingMatchInfo,
)
from .web_protocol import _RequestHandler
if TYPE_CHECKING:
from ssl import SSLContext
else:
SSLContext = None
REUSE_ADDRESS = os.name == "posix" and sys.platform != "cygwin"
def get_unused_port_socket(
host: str, family: socket.AddressFamily = socket.AF_INET
) -> socket.socket:
return get_port_socket(host, 0, family)
def get_port_socket(
host: str, port: int, family: socket.AddressFamily
) -> socket.socket:
s = socket.socket(family, socket.SOCK_STREAM)
if REUSE_ADDRESS:
# Windows has different semantics for SO_REUSEADDR,
# so don't set it. Ref:
# https://docs.microsoft.com/en-us/windows/win32/winsock/using-so-reuseaddr-and-so-exclusiveaddruse
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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 cast(int, 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,
socket_factory: Callable[
[str, int, socket.AddressFamily], socket.socket
] = get_port_socket,
**kwargs: Any,
) -> None:
self._loop = loop
self.runner: Optional[BaseRunner] = None
self._root: Optional[URL] = None
self.host = host
self.port = port
self._closed = False
self.scheme = scheme
self.skip_url_asserts = skip_url_asserts
self.socket_factory = socket_factory
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(handler_cancellation=True, **kwargs)
await self.runner.setup()
if not self.port:
self.port = 0
try:
version = ipaddress.ip_address(self.host).version
except ValueError:
version = 4
family = socket.AF_INET6 if version == 6 else socket.AF_INET
_sock = self.socket_factory(self.host, self.port, family)
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 # type: ignore[attr-defined]
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(f"{self.scheme}://{self.host}:{self.port}")
@abstractmethod # pragma: no cover
async def _make_runner(self, **kwargs: Any) -> BaseRunner:
pass
def make_url(self, path: StrOrURL) -> 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) + str(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: List[ClientResponse] = []
self._websockets: 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) -> Optional[Application]:
return cast(Optional[Application], 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: StrOrURL) -> URL:
return self._server.make_url(path)
async def _request(
self, method: str, path: StrOrURL, **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: StrOrURL, **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: StrOrURL, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP GET request."""
return _RequestContextManager(self._request(hdrs.METH_GET, path, **kwargs))
def post(self, path: StrOrURL, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP POST request."""
return _RequestContextManager(self._request(hdrs.METH_POST, path, **kwargs))
def options(self, path: StrOrURL, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP OPTIONS request."""
return _RequestContextManager(self._request(hdrs.METH_OPTIONS, path, **kwargs))
def head(self, path: StrOrURL, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP HEAD request."""
return _RequestContextManager(self._request(hdrs.METH_HEAD, path, **kwargs))
def put(self, path: StrOrURL, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP PUT request."""
return _RequestContextManager(self._request(hdrs.METH_PUT, path, **kwargs))
def patch(self, path: StrOrURL, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP PATCH request."""
return _RequestContextManager(self._request(hdrs.METH_PATCH, path, **kwargs))
def delete(self, path: StrOrURL, **kwargs: Any) -> _RequestContextManager:
"""Perform an HTTP PATCH request."""
return _RequestContextManager(self._request(hdrs.METH_DELETE, path, **kwargs))
def ws_connect(self, path: StrOrURL, **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: StrOrURL, **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(IsolatedAsyncioTestCase):
"""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:
"""Get 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()?")
async def asyncSetUp(self) -> None:
self.loop = asyncio.get_running_loop()
return await self.setUpAsync()
async def setUpAsync(self) -> None:
self.app = await self.get_application()
self.server = await self.get_server(self.app)
self.client = await self.get_client(self.server)
await self.client.start_server()
async def asyncTearDown(self) -> None:
return await self.tearDownAsync()
async def tearDownAsync(self) -> None:
await self.client.close()
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 AioHTTPTestCase test methods.
In 3.8+, this does nothing.
"""
warnings.warn(
"Decorator `@unittest_run_loop` is no longer needed in aiohttp 3.8+",
DeprecationWarning,
stacklevel=2,
)
return 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()
asyncio.set_event_loop(loop)
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(spec=Application)
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 = ...,
) -> Request:
"""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 ...:
# no loop passed, try to get the current one if
# its is running as we need a real loop to create
# executor jobs to be able to do testing
# with a real executor
try:
loop = asyncio.get_running_loop()
except RuntimeError:
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,
None,
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, Optional, Protocol, Type, TypeVar
import attr
from aiosignal import Signal
from multidict import CIMultiDict
from yarl import URL
from .client_reqrep import ClientResponse
if TYPE_CHECKING:
from .client import ClientSession
_ParamT_contra = TypeVar("_ParamT_contra", contravariant=True)
class _SignalCallback(Protocol[_ParamT_contra]):
def __call__(
self,
__client_session: ClientSession,
__trace_config_ctx: SimpleNamespace,
__params: _ParamT_contra,
) -> Awaitable[None]:
...
__all__ = (
"TraceConfig",
"TraceRequestStartParams",
"TraceRequestEndParams",
"TraceRequestExceptionParams",
"TraceConnectionQueuedStartParams",
"TraceConnectionQueuedEndParams",
"TraceConnectionCreateStartParams",
"TraceConnectionCreateEndParams",
"TraceConnectionReuseconnParams",
"TraceDnsResolveHostStartParams",
"TraceDnsResolveHostEndParams",
"TraceDnsCacheHitParams",
"TraceDnsCacheMissParams",
"TraceRequestRedirectParams",
"TraceRequestChunkSentParams",
"TraceResponseChunkReceivedParams",
"TraceRequestHeadersSentParams",
)
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[
_SignalCallback[TraceRequestStartParams]
] = Signal(self)
self._on_request_chunk_sent: Signal[
_SignalCallback[TraceRequestChunkSentParams]
] = Signal(self)
self._on_response_chunk_received: Signal[
_SignalCallback[TraceResponseChunkReceivedParams]
] = Signal(self)
self._on_request_end: Signal[_SignalCallback[TraceRequestEndParams]] = Signal(
self
)
self._on_request_exception: Signal[
_SignalCallback[TraceRequestExceptionParams]
] = Signal(self)
self._on_request_redirect: Signal[
_SignalCallback[TraceRequestRedirectParams]
] = Signal(self)
self._on_connection_queued_start: Signal[
_SignalCallback[TraceConnectionQueuedStartParams]
] = Signal(self)
self._on_connection_queued_end: Signal[
_SignalCallback[TraceConnectionQueuedEndParams]
] = Signal(self)
self._on_connection_create_start: Signal[
_SignalCallback[TraceConnectionCreateStartParams]
] = Signal(self)
self._on_connection_create_end: Signal[
_SignalCallback[TraceConnectionCreateEndParams]
] = Signal(self)
self._on_connection_reuseconn: Signal[
_SignalCallback[TraceConnectionReuseconnParams]
] = Signal(self)
self._on_dns_resolvehost_start: Signal[
_SignalCallback[TraceDnsResolveHostStartParams]
] = Signal(self)
self._on_dns_resolvehost_end: Signal[
_SignalCallback[TraceDnsResolveHostEndParams]
] = Signal(self)
self._on_dns_cache_hit: Signal[
_SignalCallback[TraceDnsCacheHitParams]
] = Signal(self)
self._on_dns_cache_miss: Signal[
_SignalCallback[TraceDnsCacheMissParams]
] = Signal(self)
self._on_request_headers_sent: Signal[
_SignalCallback[TraceRequestHeadersSentParams]
] = Signal(self)
self._trace_config_ctx_factory = trace_config_ctx_factory
def trace_config_ctx(
self, trace_request_ctx: Optional[SimpleNamespace] = None
) -> SimpleNamespace:
"""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()
self._on_request_headers_sent.freeze()
@property
def on_request_start(self) -> "Signal[_SignalCallback[TraceRequestStartParams]]":
return self._on_request_start
@property
def on_request_chunk_sent(
self,
) -> "Signal[_SignalCallback[TraceRequestChunkSentParams]]":
return self._on_request_chunk_sent
@property
def on_response_chunk_received(
self,
) -> "Signal[_SignalCallback[TraceResponseChunkReceivedParams]]":
return self._on_response_chunk_received
@property
def on_request_end(self) -> "Signal[_SignalCallback[TraceRequestEndParams]]":
return self._on_request_end
@property
def on_request_exception(
self,
) -> "Signal[_SignalCallback[TraceRequestExceptionParams]]":
return self._on_request_exception
@property
def on_request_redirect(
self,
) -> "Signal[_SignalCallback[TraceRequestRedirectParams]]":
return self._on_request_redirect
@property
def on_connection_queued_start(
self,
) -> "Signal[_SignalCallback[TraceConnectionQueuedStartParams]]":
return self._on_connection_queued_start
@property
def on_connection_queued_end(
self,
) -> "Signal[_SignalCallback[TraceConnectionQueuedEndParams]]":
return self._on_connection_queued_end
@property
def on_connection_create_start(
self,
) -> "Signal[_SignalCallback[TraceConnectionCreateStartParams]]":
return self._on_connection_create_start
@property
def on_connection_create_end(
self,
) -> "Signal[_SignalCallback[TraceConnectionCreateEndParams]]":
return self._on_connection_create_end
@property
def on_connection_reuseconn(
self,
) -> "Signal[_SignalCallback[TraceConnectionReuseconnParams]]":
return self._on_connection_reuseconn
@property
def on_dns_resolvehost_start(
self,
) -> "Signal[_SignalCallback[TraceDnsResolveHostStartParams]]":
return self._on_dns_resolvehost_start
@property
def on_dns_resolvehost_end(
self,
) -> "Signal[_SignalCallback[TraceDnsResolveHostEndParams]]":
return self._on_dns_resolvehost_end
@property
def on_dns_cache_hit(self) -> "Signal[_SignalCallback[TraceDnsCacheHitParams]]":
return self._on_dns_cache_hit
@property
def on_dns_cache_miss(self) -> "Signal[_SignalCallback[TraceDnsCacheMissParams]]":
return self._on_dns_cache_miss
@property
def on_request_headers_sent(
self,
) -> "Signal[_SignalCallback[TraceRequestHeadersSentParams]]":
return self._on_request_headers_sent
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceRequestStartParams:
"""Parameters sent by the `on_request_start` signal"""
method: str
url: URL
headers: "CIMultiDict[str]"
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceRequestChunkSentParams:
"""Parameters sent by the `on_request_chunk_sent` signal"""
method: str
url: URL
chunk: bytes
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceResponseChunkReceivedParams:
"""Parameters sent by the `on_response_chunk_received` signal"""
method: str
url: URL
chunk: bytes
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceRequestEndParams:
"""Parameters sent by the `on_request_end` signal"""
method: str
url: URL
headers: "CIMultiDict[str]"
response: ClientResponse
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceRequestExceptionParams:
"""Parameters sent by the `on_request_exception` signal"""
method: str
url: URL
headers: "CIMultiDict[str]"
exception: BaseException
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceRequestRedirectParams:
"""Parameters sent by the `on_request_redirect` signal"""
method: str
url: URL
headers: "CIMultiDict[str]"
response: ClientResponse
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceConnectionQueuedStartParams:
"""Parameters sent by the `on_connection_queued_start` signal"""
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceConnectionQueuedEndParams:
"""Parameters sent by the `on_connection_queued_end` signal"""
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceConnectionCreateStartParams:
"""Parameters sent by the `on_connection_create_start` signal"""
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceConnectionCreateEndParams:
"""Parameters sent by the `on_connection_create_end` signal"""
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceConnectionReuseconnParams:
"""Parameters sent by the `on_connection_reuseconn` signal"""
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceDnsResolveHostStartParams:
"""Parameters sent by the `on_dns_resolvehost_start` signal"""
host: str
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceDnsResolveHostEndParams:
"""Parameters sent by the `on_dns_resolvehost_end` signal"""
host: str
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceDnsCacheHitParams:
"""Parameters sent by the `on_dns_cache_hit` signal"""
host: str
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceDnsCacheMissParams:
"""Parameters sent by the `on_dns_cache_miss` signal"""
host: str
@attr.s(auto_attribs=True, frozen=True, slots=True)
class TraceRequestHeadersSentParams:
"""Parameters sent by the `on_request_headers_sent` signal"""
method: str
url: URL
headers: "CIMultiDict[str]"
class Trace:
"""Internal dependency holder 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, method: str, url: URL, chunk: bytes
) -> None:
return await self._trace_config.on_request_chunk_sent.send(
self._session,
self._trace_config_ctx,
TraceRequestChunkSentParams(method, url, chunk),
)
async def send_response_chunk_received(
self, method: str, url: URL, chunk: bytes
) -> None:
return await self._trace_config.on_response_chunk_received.send(
self._session,
self._trace_config_ctx,
TraceResponseChunkReceivedParams(method, url, 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)
)
async def send_request_headers(
self, method: str, url: URL, headers: "CIMultiDict[str]"
) -> None:
return await self._trace_config._on_request_headers_sent.send(
self._session,
self._trace_config_ctx,
TraceRequestHeadersSentParams(method, url, headers),
)

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import json
import os
from typing import (
TYPE_CHECKING,
Any,
Awaitable,
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:
_CIMultiDict = CIMultiDict[str]
_CIMultiDictProxy = CIMultiDictProxy[str]
_MultiDict = MultiDict[str]
_MultiDictProxy = MultiDictProxy[str]
from http.cookies import BaseCookie, Morsel
from .web import Request, StreamResponse
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]
LooseCookiesMappings = Mapping[str, Union[str, "BaseCookie[str]", "Morsel[Any]"]]
LooseCookiesIterables = Iterable[
Tuple[str, Union[str, "BaseCookie[str]", "Morsel[Any]"]]
]
LooseCookies = Union[
LooseCookiesMappings,
LooseCookiesIterables,
"BaseCookie[str]",
]
Handler = Callable[["Request"], Awaitable["StreamResponse"]]
Middleware = Callable[["Request", Handler], Awaitable["StreamResponse"]]
PathLike = Union[str, "os.PathLike[str]"]

616
dist/ba_data/python-site-packages/aiohttp/web.py vendored Normal file
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import asyncio
import logging
import os
import socket
import sys
import warnings
from argparse import ArgumentParser
from collections.abc import Iterable
from contextlib import suppress
from functools import partial
from importlib import import_module
from typing import (
Any,
Awaitable,
Callable,
Iterable as TypingIterable,
List,
Optional,
Set,
Type,
Union,
cast,
)
from weakref import WeakSet
from .abc import AbstractAccessLogger
from .helpers import AppKey as AppKey
from .log import access_logger
from .typedefs import PathLike
from .web_app import Application as Application, CleanupError as CleanupError
from .web_exceptions import (
HTTPAccepted as HTTPAccepted,
HTTPBadGateway as HTTPBadGateway,
HTTPBadRequest as HTTPBadRequest,
HTTPClientError as HTTPClientError,
HTTPConflict as HTTPConflict,
HTTPCreated as HTTPCreated,
HTTPError as HTTPError,
HTTPException as HTTPException,
HTTPExpectationFailed as HTTPExpectationFailed,
HTTPFailedDependency as HTTPFailedDependency,
HTTPForbidden as HTTPForbidden,
HTTPFound as HTTPFound,
HTTPGatewayTimeout as HTTPGatewayTimeout,
HTTPGone as HTTPGone,
HTTPInsufficientStorage as HTTPInsufficientStorage,
HTTPInternalServerError as HTTPInternalServerError,
HTTPLengthRequired as HTTPLengthRequired,
HTTPMethodNotAllowed as HTTPMethodNotAllowed,
HTTPMisdirectedRequest as HTTPMisdirectedRequest,
HTTPMove as HTTPMove,
HTTPMovedPermanently as HTTPMovedPermanently,
HTTPMultipleChoices as HTTPMultipleChoices,
HTTPNetworkAuthenticationRequired as HTTPNetworkAuthenticationRequired,
HTTPNoContent as HTTPNoContent,
HTTPNonAuthoritativeInformation as HTTPNonAuthoritativeInformation,
HTTPNotAcceptable as HTTPNotAcceptable,
HTTPNotExtended as HTTPNotExtended,
HTTPNotFound as HTTPNotFound,
HTTPNotImplemented as HTTPNotImplemented,
HTTPNotModified as HTTPNotModified,
HTTPOk as HTTPOk,
HTTPPartialContent as HTTPPartialContent,
HTTPPaymentRequired as HTTPPaymentRequired,
HTTPPermanentRedirect as HTTPPermanentRedirect,
HTTPPreconditionFailed as HTTPPreconditionFailed,
HTTPPreconditionRequired as HTTPPreconditionRequired,
HTTPProxyAuthenticationRequired as HTTPProxyAuthenticationRequired,
HTTPRedirection as HTTPRedirection,
HTTPRequestEntityTooLarge as HTTPRequestEntityTooLarge,
HTTPRequestHeaderFieldsTooLarge as HTTPRequestHeaderFieldsTooLarge,
HTTPRequestRangeNotSatisfiable as HTTPRequestRangeNotSatisfiable,
HTTPRequestTimeout as HTTPRequestTimeout,
HTTPRequestURITooLong as HTTPRequestURITooLong,
HTTPResetContent as HTTPResetContent,
HTTPSeeOther as HTTPSeeOther,
HTTPServerError as HTTPServerError,
HTTPServiceUnavailable as HTTPServiceUnavailable,
HTTPSuccessful as HTTPSuccessful,
HTTPTemporaryRedirect as HTTPTemporaryRedirect,
HTTPTooManyRequests as HTTPTooManyRequests,
HTTPUnauthorized as HTTPUnauthorized,
HTTPUnavailableForLegalReasons as HTTPUnavailableForLegalReasons,
HTTPUnprocessableEntity as HTTPUnprocessableEntity,
HTTPUnsupportedMediaType as HTTPUnsupportedMediaType,
HTTPUpgradeRequired as HTTPUpgradeRequired,
HTTPUseProxy as HTTPUseProxy,
HTTPVariantAlsoNegotiates as HTTPVariantAlsoNegotiates,
HTTPVersionNotSupported as HTTPVersionNotSupported,
NotAppKeyWarning as NotAppKeyWarning,
)
from .web_fileresponse import FileResponse as FileResponse
from .web_log import AccessLogger
from .web_middlewares import (
middleware as middleware,
normalize_path_middleware as normalize_path_middleware,
)
from .web_protocol import (
PayloadAccessError as PayloadAccessError,
RequestHandler as RequestHandler,
RequestPayloadError as RequestPayloadError,
)
from .web_request import (
BaseRequest as BaseRequest,
FileField as FileField,
Request as Request,
)
from .web_response import (
ContentCoding as ContentCoding,
Response as Response,
StreamResponse as StreamResponse,
json_response as json_response,
)
from .web_routedef import (
AbstractRouteDef as AbstractRouteDef,
RouteDef as RouteDef,
RouteTableDef as RouteTableDef,
StaticDef as StaticDef,
delete as delete,
get as get,
head as head,
options as options,
patch as patch,
post as post,
put as put,
route as route,
static as static,
view as view,
)
from .web_runner import (
AppRunner as AppRunner,
BaseRunner as BaseRunner,
BaseSite as BaseSite,
GracefulExit as GracefulExit,
NamedPipeSite as NamedPipeSite,
ServerRunner as ServerRunner,
SockSite as SockSite,
TCPSite as TCPSite,
UnixSite as UnixSite,
)
from .web_server import Server as Server
from .web_urldispatcher import (
AbstractResource as AbstractResource,
AbstractRoute as AbstractRoute,
DynamicResource as DynamicResource,
PlainResource as PlainResource,
PrefixedSubAppResource as PrefixedSubAppResource,
Resource as Resource,
ResourceRoute as ResourceRoute,
StaticResource as StaticResource,
UrlDispatcher as UrlDispatcher,
UrlMappingMatchInfo as UrlMappingMatchInfo,
View as View,
)
from .web_ws import (
WebSocketReady as WebSocketReady,
WebSocketResponse as WebSocketResponse,
WSMsgType as WSMsgType,
)
__all__ = (
# web_app
"AppKey",
"Application",
"CleanupError",
# web_exceptions
"NotAppKeyWarning",
"HTTPAccepted",
"HTTPBadGateway",
"HTTPBadRequest",
"HTTPClientError",
"HTTPConflict",
"HTTPCreated",
"HTTPError",
"HTTPException",
"HTTPExpectationFailed",
"HTTPFailedDependency",
"HTTPForbidden",
"HTTPFound",
"HTTPGatewayTimeout",
"HTTPGone",
"HTTPInsufficientStorage",
"HTTPInternalServerError",
"HTTPLengthRequired",
"HTTPMethodNotAllowed",
"HTTPMisdirectedRequest",
"HTTPMove",
"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",
"PrefixedSubAppResource",
"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[misc,assignment]
# Only display warning when using -Wdefault, -We, -X dev or similar.
warnings.filterwarnings("ignore", category=NotAppKeyWarning, append=True)
HostSequence = TypingIterable[str]
async def _run_app(
app: Union[Application, Awaitable[Application]],
*,
host: Optional[Union[str, HostSequence]] = None,
port: Optional[int] = None,
path: Union[PathLike, TypingIterable[PathLike], None] = None,
sock: Optional[Union[socket.socket, TypingIterable[socket.socket]]] = None,
shutdown_timeout: float = 60.0,
keepalive_timeout: float = 75.0,
ssl_context: Optional[SSLContext] = None,
print: Optional[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,
handler_cancellation: bool = False,
) -> None:
async def wait(
starting_tasks: "WeakSet[asyncio.Task[object]]", shutdown_timeout: float
) -> None:
# Wait for pending tasks for a given time limit.
t = asyncio.current_task()
assert t is not None
starting_tasks.add(t)
with suppress(asyncio.TimeoutError):
await asyncio.wait_for(_wait(starting_tasks), timeout=shutdown_timeout)
async def _wait(exclude: "WeakSet[asyncio.Task[object]]") -> None:
t = asyncio.current_task()
assert t is not None
exclude.add(t)
while tasks := asyncio.all_tasks().difference(exclude):
await asyncio.wait(tasks)
# An internal function to actually do all dirty job for application running
if asyncio.iscoroutine(app):
app = await app
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,
keepalive_timeout=keepalive_timeout,
shutdown_timeout=shutdown_timeout,
handler_cancellation=handler_cancellation,
)
await runner.setup()
# On shutdown we want to avoid waiting on tasks which run forever.
# It's very likely that all tasks which run forever will have been created by
# the time we have completed the application startup (in runner.setup()),
# so we just record all running tasks here and exclude them later.
starting_tasks: "WeakSet[asyncio.Task[object]]" = WeakSet(asyncio.all_tasks())
runner.shutdown_callback = partial(wait, starting_tasks, shutdown_timeout)
sites: List[BaseSite] = []
try:
if host is not None:
if isinstance(host, (str, bytes, bytearray, memoryview)):
sites.append(
TCPSite(
runner,
host,
port,
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,
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,
ssl_context=ssl_context,
backlog=backlog,
reuse_address=reuse_address,
reuse_port=reuse_port,
)
)
if path is not None:
if isinstance(path, (str, os.PathLike)):
sites.append(
UnixSite(
runner,
path,
ssl_context=ssl_context,
backlog=backlog,
)
)
else:
for p in path:
sites.append(
UnixSite(
runner,
p,
ssl_context=ssl_context,
backlog=backlog,
)
)
if sock is not None:
if not isinstance(sock, Iterable):
sites.append(
SockSite(
runner,
sock,
ssl_context=ssl_context,
backlog=backlog,
)
)
else:
for s in sock:
sites.append(
SockSite(
runner,
s,
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))
)
# sleep forever by 1 hour intervals,
while True:
await asyncio.sleep(3600)
finally:
await runner.cleanup()
def _cancel_tasks(
to_cancel: Set["asyncio.Task[Any]"], loop: asyncio.AbstractEventLoop
) -> None:
if not to_cancel:
return
for task in to_cancel:
task.cancel()
loop.run_until_complete(asyncio.gather(*to_cancel, 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[Union[str, HostSequence]] = None,
port: Optional[int] = None,
path: Union[PathLike, TypingIterable[PathLike], None] = None,
sock: Optional[Union[socket.socket, TypingIterable[socket.socket]]] = None,
shutdown_timeout: float = 60.0,
keepalive_timeout: float = 75.0,
ssl_context: Optional[SSLContext] = None,
print: Optional[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,
handler_cancellation: bool = False,
loop: Optional[asyncio.AbstractEventLoop] = None,
) -> None:
"""Run an app locally"""
if loop is None:
loop = asyncio.new_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())
main_task = loop.create_task(
_run_app(
app,
host=host,
port=port,
path=path,
sock=sock,
shutdown_timeout=shutdown_timeout,
keepalive_timeout=keepalive_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,
handler_cancellation=handler_cancellation,
)
)
try:
asyncio.set_event_loop(loop)
loop.run_until_complete(main_task)
except (GracefulExit, KeyboardInterrupt): # pragma: no cover
pass
finally:
_cancel_tasks({main_task}, loop)
_cancel_tasks(asyncio.all_tasks(loop), loop)
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(f"unable to import {mod_str}: {ex}")
try:
func = getattr(module, func_str)
except AttributeError:
arg_parser.error(f"module {mod_str!r} has no attribute {func_str!r}")
# 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

596
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@ -0,0 +1,596 @@
import asyncio
import logging
import warnings
from functools import partial, update_wrapper
from typing import (
TYPE_CHECKING,
Any,
AsyncIterator,
Awaitable,
Callable,
Dict,
Iterable,
Iterator,
List,
Mapping,
MutableMapping,
Optional,
Sequence,
Tuple,
Type,
TypeVar,
Union,
cast,
overload,
)
from aiosignal import Signal
from frozenlist import FrozenList
from . import hdrs
from .abc import (
AbstractAccessLogger,
AbstractMatchInfo,
AbstractRouter,
AbstractStreamWriter,
)
from .helpers import DEBUG, AppKey
from .http_parser import RawRequestMessage
from .log import web_logger
from .streams import StreamReader
from .typedefs import Middleware
from .web_exceptions import NotAppKeyWarning
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,
AbstractRoute,
Domain,
MaskDomain,
MatchedSubAppResource,
PrefixedSubAppResource,
UrlDispatcher,
)
__all__ = ("Application", "CleanupError")
if TYPE_CHECKING:
_AppSignal = Signal[Callable[["Application"], Awaitable[None]]]
_RespPrepareSignal = Signal[Callable[[Request, StreamResponse], Awaitable[None]]]
_Middlewares = FrozenList[Middleware]
_MiddlewaresHandlers = Optional[Sequence[Tuple[Middleware, bool]]]
_Subapps = List["Application"]
else:
# No type checker mode, skip types
_AppSignal = Signal
_RespPrepareSignal = Signal
_Middlewares = FrozenList
_MiddlewaresHandlers = Optional[Sequence]
_Subapps = List
_T = TypeVar("_T")
_U = TypeVar("_U")
class Application(MutableMapping[Union[str, AppKey[Any]], 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: Optional[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: UrlDispatcher = router
self._loop = loop
self._handler_args = handler_args
self.logger = logger
self._middlewares: _Middlewares = FrozenList(middlewares)
# initialized on freezing
self._middlewares_handlers: _MiddlewaresHandlers = None
# initialized on freezing
self._run_middlewares: Optional[bool] = None
self._state: Dict[Union[AppKey[Any], str], object] = {}
self._frozen = False
self._pre_frozen = False
self._subapps: _Subapps = []
self._on_response_prepare: _RespPrepareSignal = Signal(self)
self._on_startup: _AppSignal = Signal(self)
self._on_shutdown: _AppSignal = Signal(self)
self._on_cleanup: _AppSignal = Signal(self)
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=3,
)
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
@overload # type: ignore[override]
def __getitem__(self, key: AppKey[_T]) -> _T:
...
@overload
def __getitem__(self, key: str) -> Any:
...
def __getitem__(self, key: Union[str, AppKey[_T]]) -> 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,
)
@overload # type: ignore[override]
def __setitem__(self, key: AppKey[_T], value: _T) -> None:
...
@overload
def __setitem__(self, key: str, value: Any) -> None:
...
def __setitem__(self, key: Union[str, AppKey[_T]], value: Any) -> None:
self._check_frozen()
if not isinstance(key, AppKey):
warnings.warn(
"It is recommended to use web.AppKey instances for keys.\n"
+ "https://docs.aiohttp.org/en/stable/web_advanced.html"
+ "#application-s-config",
category=NotAppKeyWarning,
stacklevel=2,
)
self._state[key] = value
def __delitem__(self, key: Union[str, AppKey[_T]]) -> None:
self._check_frozen()
del self._state[key]
def __len__(self) -> int:
return len(self._state)
def __iter__(self) -> Iterator[Union[str, AppKey[Any]]]:
return iter(self._state)
@overload # type: ignore[override]
def get(self, key: AppKey[_T], default: None = ...) -> Optional[_T]:
...
@overload
def get(self, key: AppKey[_T], default: _U) -> Union[_T, _U]:
...
@overload
def get(self, key: str, default: Any = ...) -> Any:
...
def get(self, key: Union[str, AppKey[_T]], default: Any = None) -> Any:
return self._state.get(key, default)
########
@property
def loop(self) -> asyncio.AbstractEventLoop:
# Technically the loop can be None
# but we mask it by explicit type cast
# to provide more convenient 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 # type: ignore[no-any-return]
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: Domain = MaskDomain(domain)
else:
rule = Domain(domain)
factory = partial(MatchedSubAppResource, rule, subapp)
return self._add_subapp(factory, subapp)
def add_routes(self, routes: Iterable[AbstractRouteDef]) -> List[AbstractRoute]:
return 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[arg-type]
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()
"""
if self.on_cleanup.frozen:
await self.on_cleanup.send(self)
else:
# If an exception occurs in startup, ensure cleanup contexts are completed.
await self._cleanup_ctx._on_cleanup(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
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[union-attr]
if new_style:
handler = update_wrapper(
partial(m, handler=handler), handler
)
else:
handler = await m(app, handler) # type: ignore[arg-type,assignment]
resp = await handler(request)
return resp
def __call__(self) -> "Application":
"""gunicorn compatibility"""
return self
def __repr__(self) -> str:
return f"<Application 0x{id(self):x}>"
def __bool__(self) -> bool:
return True
class CleanupError(RuntimeError):
@property
def exceptions(self) -> List[BaseException]:
return cast(List[BaseException], self.args[1])
if TYPE_CHECKING:
_CleanupContextBase = FrozenList[Callable[[Application], AsyncIterator[None]]]
else:
_CleanupContextBase = FrozenList
class CleanupContext(_CleanupContextBase):
def __init__(self) -> None:
super().__init__()
self._exits: 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(f"{it!r} has more than one 'yield'"))
if errors:
if len(errors) == 1:
raise errors[0]
else:
raise CleanupError("Multiple errors on cleanup stage", errors)

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@ -0,0 +1,452 @@
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",
"HTTPMove",
"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",
)
class NotAppKeyWarning(UserWarning):
"""Warning when not using AppKey in Application."""
############################################################
# 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 = f"{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[str] = set(allowed_methods)
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: Optional[StrOrURL],
*,
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._link = None
if link:
self._link = URL(link)
self.headers["Link"] = f'<{str(self._link)}>; rel="blocked-by"'
@property
def link(self) -> Optional[URL]:
return self._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 typing import ( # noqa
IO,
TYPE_CHECKING,
Any,
Awaitable,
Callable,
Final,
Iterator,
List,
Optional,
Tuple,
Union,
cast,
)
from . import hdrs
from .abc import AbstractStreamWriter
from .helpers import ETAG_ANY, ETag, must_be_empty_body
from .typedefs import LooseHeaders, PathLike
from .web_exceptions import (
HTTPNotModified,
HTTPPartialContent,
HTTPPreconditionFailed,
HTTPRequestRangeNotSatisfiable,
)
from .web_response import StreamResponse
__all__ = ("FileResponse",)
if TYPE_CHECKING:
from .web_request import BaseRequest
_T_OnChunkSent = Optional[Callable[[bytes], Awaitable[None]]]
NOSENDFILE: Final[bool] = bool(os.environ.get("AIOHTTP_NOSENDFILE"))
class FileResponse(StreamResponse):
"""A response object can be used to send files."""
def __init__(
self,
path: PathLike,
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)
self._path = pathlib.Path(path)
self._chunk_size = chunk_size
async def _sendfile_fallback(
self, writer: AbstractStreamWriter, fobj: IO[Any], offset: int, count: int
) -> AbstractStreamWriter:
# To keep memory usage low,fobj is transferred in chunks
# controlled by the constructor's chunk_size argument.
chunk_size = self._chunk_size
loop = asyncio.get_event_loop()
await loop.run_in_executor(None, fobj.seek, offset)
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
async def _sendfile(
self, request: "BaseRequest", fobj: IO[Any], offset: int, count: int
) -> AbstractStreamWriter:
writer = await super().prepare(request)
assert writer is not None
if NOSENDFILE or self.compression:
return await self._sendfile_fallback(writer, fobj, offset, count)
loop = request._loop
transport = request.transport
assert transport is not None
try:
await loop.sendfile(transport, fobj, offset, count)
except NotImplementedError:
return await self._sendfile_fallback(writer, fobj, offset, count)
await super().write_eof()
return writer
@staticmethod
def _strong_etag_match(etag_value: str, etags: Tuple[ETag, ...]) -> bool:
if len(etags) == 1 and etags[0].value == ETAG_ANY:
return True
return any(etag.value == etag_value for etag in etags if not etag.is_weak)
async def _not_modified(
self, request: "BaseRequest", etag_value: str, last_modified: float
) -> Optional[AbstractStreamWriter]:
self.set_status(HTTPNotModified.status_code)
self._length_check = False
self.etag = etag_value # type: ignore[assignment]
self.last_modified = last_modified # type: ignore[assignment]
# Delete any Content-Length headers provided by user. HTTP 304
# should always have empty response body
return await super().prepare(request)
async def _precondition_failed(
self, request: "BaseRequest"
) -> Optional[AbstractStreamWriter]:
self.set_status(HTTPPreconditionFailed.status_code)
self.content_length = 0
return await super().prepare(request)
def _get_file_path_stat_and_gzip(
self, check_for_gzipped_file: bool
) -> Tuple[pathlib.Path, os.stat_result, bool]:
"""Return the file path, stat result, and gzip status.
This method should be called from a thread executor
since it calls os.stat which may block.
"""
filepath = self._path
if check_for_gzipped_file:
gzip_path = filepath.with_name(filepath.name + ".gz")
try:
return gzip_path, gzip_path.stat(), True
except OSError:
# Fall through and try the non-gzipped file
pass
return filepath, filepath.stat(), False
async def prepare(self, request: "BaseRequest") -> Optional[AbstractStreamWriter]:
loop = asyncio.get_event_loop()
# Encoding comparisons should be case-insensitive
# https://www.rfc-editor.org/rfc/rfc9110#section-8.4.1
check_for_gzipped_file = (
"gzip" in request.headers.get(hdrs.ACCEPT_ENCODING, "").lower()
)
filepath, st, gzip = await loop.run_in_executor(
None, self._get_file_path_stat_and_gzip, check_for_gzipped_file
)
etag_value = f"{st.st_mtime_ns:x}-{st.st_size:x}"
last_modified = st.st_mtime
# https://tools.ietf.org/html/rfc7232#section-6
ifmatch = request.if_match
if ifmatch is not None and not self._strong_etag_match(etag_value, ifmatch):
return await self._precondition_failed(request)
unmodsince = request.if_unmodified_since
if (
unmodsince is not None
and ifmatch is None
and st.st_mtime > unmodsince.timestamp()
):
return await self._precondition_failed(request)
ifnonematch = request.if_none_match
if ifnonematch is not None and self._strong_etag_match(etag_value, ifnonematch):
return await self._not_modified(request, etag_value, last_modified)
modsince = request.if_modified_since
if (
modsince is not None
and ifnonematch is None
and st.st_mtime <= modsince.timestamp()
):
return await self._not_modified(request, etag_value, last_modified)
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] = f"bytes */{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] = f"bytes */{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[assignment]
if encoding:
self.headers[hdrs.CONTENT_ENCODING] = encoding
if gzip:
self.headers[hdrs.VARY] = hdrs.ACCEPT_ENCODING
# Disable compression if we are already sending
# a compressed file since we don't want to double
# compress.
self._compression = False
self.etag = etag_value # type: ignore[assignment]
self.last_modified = st.st_mtime # type: ignore[assignment]
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 {}-{}/{}".format(
real_start, real_start + count - 1, file_size
)
# If we are sending 0 bytes calling sendfile() will throw a ValueError
if count == 0 or must_be_empty_body(request.method, self.status):
return await super().prepare(request)
fobj = await loop.run_in_executor(None, filepath.open, "rb")
if start: # be aware that start could be None or int=0 here.
offset = start
else:
offset = 0
try:
return await self._sendfile(request, fobj, offset, count)
finally:
await asyncio.shield(loop.run_in_executor(None, fobj.close))

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import datetime
import functools
import logging
import os
import re
import time as time_mod
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: 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:
tz = datetime.timezone(datetime.timedelta(seconds=-time_mod.timezone))
now = datetime.datetime.now(tz)
start_time = now - datetime.timedelta(seconds=time)
return start_time.strftime("[%d/%b/%Y:%H:%M:%S %z]")
@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 "{} {} HTTP/{}.{}".format(
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:
if not self.logger.isEnabledFor(logging.INFO):
# Avoid formatting the log line if it will not be emitted.
return
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 # type: ignore[misc]
dct = extra.get(k1, {}) # type: ignore[var-annotated,has-type]
dct[k2] = value # type: ignore[index,has-type]
extra[k1] = dct # type: ignore[has-type,assignment]
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, Tuple, Type, TypeVar
from .typedefs import Handler, Middleware
from .web_exceptions import HTTPMove, HTTPPermanentRedirect
from .web_request import Request
from .web_response import StreamResponse
from .web_urldispatcher import SystemRoute
__all__ = (
"middleware",
"normalize_path_middleware",
)
if TYPE_CHECKING:
from .web_app import Application
_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
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[attr-defined]
return f
def normalize_path_middleware(
*,
append_slash: bool = True,
remove_slash: bool = False,
merge_slashes: bool = True,
redirect_class: Type[HTTPMove] = HTTPPermanentRedirect,
) -> Middleware:
"""Factory for producing a middleware that normalizes the path of a request.
Normalizing 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:
path = re.sub("^//+", "/", path) # SECURITY: GHSA-v6wp-4m6f-gcjg
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,
Deque,
Optional,
Sequence,
Tuple,
Type,
Union,
cast,
)
import attr
import yarl
from .abc import AbstractAccessLogger, AbstractStreamWriter
from .base_protocol import BaseProtocol
from .helpers import ceil_timeout, set_exception
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:
from .web_server import Server
_RequestFactory = Callable[
[
RawRequestMessage,
StreamReader,
"RequestHandler",
AbstractStreamWriter,
"asyncio.Task[None]",
],
BaseRequest,
]
_RequestHandler = Callable[[BaseRequest], Awaitable[StreamResponse]]
ERROR = RawRequestMessage(
"UNKNOWN",
"/",
HttpVersion10,
{}, # type: ignore[arg-type]
{}, # type: ignore[arg-type]
True,
None,
False,
False,
yarl.URL("/"),
)
class RequestPayloadError(Exception):
"""Payload parsing error."""
class PayloadAccessError(Exception):
"""Payload was accessed after response was sent."""
@attr.s(auto_attribs=True, frozen=True, slots=True)
class _ErrInfo:
status: int
exc: BaseException
message: str
_MsgType = Tuple[Union[RawRequestMessage, _ErrInfo], StreamReader]
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.
keepalive_timeout -- number of seconds before closing
keep-alive connection
tcp_keepalive -- TCP keep-alive is on, default is on
debug -- enable debug mode
logger -- custom logger object
access_log_class -- custom class for access_logger
access_log -- custom logging object
access_log_format -- access log format string
loop -- Optional event loop
max_line_size -- Optional maximum header line size
max_field_size -- Optional maximum header field size
max_headers -- Optional maximum header size
timeout_ceil_threshold -- Optional value to specify
threshold to ceil() timeout
values
"""
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",
"_task_handler",
"_upgrade",
"_payload_parser",
"_request_parser",
"_reading_paused",
"logger",
"debug",
"access_log",
"access_logger",
"_close",
"_force_close",
"_current_request",
"_timeout_ceil_threshold",
)
def __init__(
self,
manager: "Server",
*,
loop: asyncio.AbstractEventLoop,
keepalive_timeout: float = 75.0, # 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,
read_bufsize: int = 2**16,
auto_decompress: bool = True,
timeout_ceil_threshold: float = 5,
):
super().__init__(loop)
self._request_count = 0
self._keepalive = False
self._current_request: Optional[BaseRequest] = None
self._manager: Optional[Server] = manager
self._request_handler: Optional[_RequestHandler] = manager.request_handler
self._request_factory: Optional[_RequestFactory] = manager.request_factory
self._tcp_keepalive = tcp_keepalive
# placeholder to be replaced on keepalive timeout setup
self._keepalive_time = 0.0
self._keepalive_handle: Optional[asyncio.Handle] = None
self._keepalive_timeout = keepalive_timeout
self._lingering_time = float(lingering_time)
self._messages: Deque[_MsgType] = deque()
self._message_tail = b""
self._waiter: Optional[asyncio.Future[None]] = None
self._task_handler: Optional[asyncio.Task[None]] = None
self._upgrade = False
self._payload_parser: Any = None
self._request_parser: Optional[HttpRequestParser] = HttpRequestParser(
self,
loop,
read_bufsize,
max_line_size=max_line_size,
max_field_size=max_field_size,
max_headers=max_headers,
payload_exception=RequestPayloadError,
auto_decompress=auto_decompress,
)
self._timeout_ceil_threshold: float = 5
try:
self._timeout_ceil_threshold = float(timeout_ceil_threshold)
except (TypeError, ValueError):
pass
self.logger = logger
self.debug = debug
self.access_log = access_log
if access_log:
self.access_logger: Optional[AbstractAccessLogger] = access_log_class(
access_log, access_log_format
)
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:
"""Do worker process exit preparations.
We need to clean up 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):
async with ceil_timeout(timeout):
if self._current_request is not None:
self._current_request._cancel(asyncio.CancelledError())
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)
# Grab value before setting _manager to None.
handler_cancellation = self._manager.handler_cancellation
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._current_request is not None:
if exc is None:
exc = ConnectionResetError("Connection lost")
self._current_request._cancel(exc)
if self._waiter is not None:
self._waiter.cancel()
if handler_cancellation and self._task_handler is not None:
self._task_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
messages: Sequence[_MsgType]
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:
messages = [
(_ErrInfo(status=400, exc=exc, message=exc.message), EMPTY_PAYLOAD)
]
upgraded = False
tail = b""
for msg, payload in messages or ():
self._request_count += 1
self._messages.append((msg, payload))
waiter = self._waiter
if messages and waiter is not None and 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:
"""Close connection.
Stop accepting new pipelining messages and close
connection when handlers done processing messages.
"""
self._close = True
if self._waiter:
self._waiter.cancel()
def force_close(self) -> None:
"""Forcefully 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, self._loop.time() - 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 _handle_request(
self,
request: BaseRequest,
start_time: float,
request_handler: Callable[[BaseRequest], Awaitable[StreamResponse]],
) -> Tuple[StreamResponse, bool]:
assert self._request_handler is not None
try:
try:
self._current_request = request
resp = await request_handler(request)
finally:
self._current_request = None
except HTTPException as exc:
resp = exc
reset = await self.finish_response(request, resp, start_time)
except asyncio.CancelledError:
raise
except asyncio.TimeoutError as exc:
self.log_debug("Request handler timed out.", exc_info=exc)
resp = self.handle_error(request, 504)
reset = await self.finish_response(request, resp, start_time)
except Exception as exc:
resp = self.handle_error(request, 500, exc)
reset = await self.finish_response(request, resp, start_time)
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,
)
reset = await self.finish_response(request, resp, start_time)
return resp, reset
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()
start = loop.time()
manager.requests_count += 1
writer = StreamWriter(self, loop)
if isinstance(message, _ErrInfo):
# make request_factory work
request_handler = self._make_error_handler(message)
message = ERROR
else:
request_handler = self._request_handler
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._handle_request(request, start, request_handler)
)
try:
resp, reset = await task
except (asyncio.CancelledError, ConnectionError):
self.log_debug("Ignored premature client disconnection")
break
# Drop the processed task from asyncio.Task.all_tasks() early
del task
if reset:
self.log_debug("Ignored premature client disconnection 2")
break
# notify server about keep-alive
self._keepalive = bool(resp.keep_alive)
# 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:
async with ceil_timeout(end_t - now):
# 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()
set_exception(payload, 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:
self.transport.close()
async def finish_response(
self, request: BaseRequest, resp: StreamResponse, start_time: float
) -> bool:
"""Prepare the response and write_eof, then log access.
This has to
be called within the context of any exception so the access logger
can get exception information. Returns True if the client disconnects
prematurely.
"""
if self._request_parser is not None:
self._request_parser.set_upgraded(False)
self._upgrade = False
if self._message_tail:
self._request_parser.feed_data(self._message_tail)
self._message_tail = b""
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_access(request, resp, start_time)
return True
else:
self.log_access(request, resp, start_time)
return False
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)
# some data already got sent, connection is broken
if request.writer.output_size > 0:
raise ConnectionError(
"Response is sent already, cannot send another response "
"with the error message"
)
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 = f"<h2>Traceback:</h2>\n<pre>{tb}</pre>"
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()
return resp
def _make_error_handler(
self, err_info: _ErrInfo
) -> Callable[[BaseRequest], Awaitable[StreamResponse]]:
async def handler(request: BaseRequest) -> StreamResponse:
return self.handle_error(
request, err_info.status, err_info.exc, err_info.message
)
return handler

901
dist/ba_data/python-site-packages/aiohttp/web_request.py vendored Normal file
View file

@ -0,0 +1,901 @@
import asyncio
import datetime
import io
import re
import socket
import string
import tempfile
import types
import warnings
from http.cookies import SimpleCookie
from types import MappingProxyType
from typing import (
TYPE_CHECKING,
Any,
Dict,
Final,
Iterator,
Mapping,
MutableMapping,
Optional,
Pattern,
Tuple,
Union,
cast,
)
from urllib.parse import parse_qsl
import attr
from multidict import (
CIMultiDict,
CIMultiDictProxy,
MultiDict,
MultiDictProxy,
MultiMapping,
)
from yarl import URL
from . import hdrs
from .abc import AbstractStreamWriter
from .helpers import (
_SENTINEL,
DEBUG,
ETAG_ANY,
LIST_QUOTED_ETAG_RE,
ChainMapProxy,
ETag,
HeadersMixin,
parse_http_date,
reify,
sentinel,
set_exception,
)
from .http_parser import RawRequestMessage
from .http_writer import HttpVersion
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:
from .web_app import Application
from .web_protocol import RequestHandler
from .web_urldispatcher import UrlMappingMatchInfo
@attr.s(auto_attribs=True, frozen=True, slots=True)
class FileField:
name: str
filename: str
file: io.BufferedReader
content_type: str
headers: "CIMultiDictProxy[str]"
_TCHAR: Final[str] = string.digits + string.ascii_letters + r"!#$%&'*+.^_`|~-"
# '-' at the end to prevent interpretation as range in a char class
_TOKEN: Final[str] = rf"[{_TCHAR}]+"
_QDTEXT: Final[str] = 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: Final[str] = r"\\[\t !-~]"
_QUOTED_STRING: Final[str] = r'"(?:{quoted_pair}|{qdtext})*"'.format(
qdtext=_QDTEXT, quoted_pair=_QUOTED_PAIR
)
_FORWARDED_PAIR: Final[
str
] = r"({token})=({token}|{quoted_string})(:\d{{1,4}})?".format(
token=_TOKEN, quoted_string=_QUOTED_STRING
)
_QUOTED_PAIR_REPLACE_RE: Final[Pattern[str]] = re.compile(r"\\([\t !-~])")
# same pattern as _QUOTED_PAIR but contains a capture group
_FORWARDED_PAIR_RE: Final[Pattern[str]] = 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._cache: Dict[str, Any] = {}
url = message.url
if url.is_absolute():
# absolute URL is given,
# override auto-calculating url, host, and scheme
# all other properties should be good
self._cache["url"] = url
self._cache["host"] = url.host
self._cache["scheme"] = url.scheme
self._rel_url = url.relative()
else:
self._rel_url = message.url
self._post: Optional[MultiDictProxy[Union[str, bytes, FileField]]] = None
self._read_bytes: Optional[bytes] = None
self._state = state
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: Union[str, _SENTINEL] = sentinel,
rel_url: Union[StrOrURL, _SENTINEL] = sentinel,
headers: Union[LooseHeaders, _SENTINEL] = sentinel,
scheme: Union[str, _SENTINEL] = sentinel,
host: Union[str, _SENTINEL] = sentinel,
remote: Union[str, _SENTINEL] = sentinel,
client_max_size: Union[int, _SENTINEL] = 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: Dict[str, Any] = {}
if method is not sentinel:
dct["method"] = method
if rel_url is not sentinel:
new_url: 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
if client_max_size is sentinel:
client_max_size = self._client_max_size
return self.__class__(
message,
self._payload,
self._protocol,
self._payload_writer,
self._task,
self._loop,
client_max_size=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
@property
def client_max_size(self) -> int:
return self._client_max_size
@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: 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) -> HttpVersion:
"""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
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 self._transport_peername is None:
return None
if isinstance(self._transport_peername, (list, tuple)):
return str(self._transport_peername[0])
return str(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) -> "MultiMapping[str]":
"""A multidict with all the variables in the query string."""
return MultiDictProxy(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) -> "MultiMapping[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
@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 parse_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 parse_http_date(self.headers.get(hdrs.IF_UNMODIFIED_SINCE))
@staticmethod
def _etag_values(etag_header: str) -> Iterator[ETag]:
"""Extract `ETag` objects from raw header."""
if etag_header == ETAG_ANY:
yield ETag(
is_weak=False,
value=ETAG_ANY,
)
else:
for match in LIST_QUOTED_ETAG_RE.finditer(etag_header):
is_weak, value, garbage = match.group(2, 3, 4)
# Any symbol captured by 4th group means
# that the following sequence is invalid.
if garbage:
break
yield ETag(
is_weak=bool(is_weak),
value=value,
)
@classmethod
def _if_match_or_none_impl(
cls, header_value: Optional[str]
) -> Optional[Tuple[ETag, ...]]:
if not header_value:
return None
return tuple(cls._etag_values(header_value))
@reify
def if_match(self) -> Optional[Tuple[ETag, ...]]:
"""The value of If-Match HTTP header, or None.
This header is represented as a `tuple` of `ETag` objects.
"""
return self._if_match_or_none_impl(self.headers.get(hdrs.IF_MATCH))
@reify
def if_none_match(self) -> Optional[Tuple[ETag, ...]]:
"""The value of If-None-Match HTTP header, or None.
This header is represented as a `tuple` of `ETag` objects.
"""
return self._if_match_or_none_impl(self.headers.get(hdrs.IF_NONE_MATCH))
@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 parse_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[Union[str, bytes, FileField]] = MultiDict()
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):
assert field.name is not None
# Note that according to RFC 7578, the Content-Type header
# is optional, even for files, so we can't assume it's
# present.
# https://tools.ietf.org/html/rfc7578#section-4.4
if field.filename:
# store file in temp file
tmp = await self._loop.run_in_executor(
None, tempfile.TemporaryFile
)
chunk = await field.read_chunk(size=2**16)
while chunk:
chunk = field.decode(chunk)
await self._loop.run_in_executor(None, tmp.write, chunk)
size += len(chunk)
if 0 < max_size < size:
await self._loop.run_in_executor(None, tmp.close)
raise HTTPRequestEntityTooLarge(
max_size=max_size, actual_size=size
)
chunk = await field.read_chunk(size=2**16)
await self._loop.run_in_executor(None, tmp.seek, 0)
if field_ct is None:
field_ct = "application/octet-stream"
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 get_extra_info(self, name: str, default: Any = None) -> Any:
"""Extra info from protocol transport"""
protocol = self._protocol
if protocol is None:
return default
transport = protocol.transport
if transport is None:
return default
return transport.get_extra_info(name, default)
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
def _cancel(self, exc: BaseException) -> None:
set_exception(self._payload, exc)
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: Optional[UrlMappingMatchInfo] = None
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: Union[str, _SENTINEL] = sentinel,
rel_url: Union[StrOrURL, _SENTINEL] = sentinel,
headers: Union[LooseHeaders, _SENTINEL] = sentinel,
scheme: Union[str, _SENTINEL] = sentinel,
host: Union[str, _SENTINEL] = sentinel,
remote: Union[str, _SENTINEL] = sentinel,
client_max_size: Union[int, _SENTINEL] = sentinel,
) -> "Request":
ret = super().clone(
method=method,
rel_url=rel_url,
headers=headers,
scheme=scheme,
host=host,
remote=remote,
client_max_size=client_max_size,
)
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)

819
dist/ba_data/python-site-packages/aiohttp/web_response.py vendored Normal file
View file

@ -0,0 +1,819 @@
import asyncio
import collections.abc
import datetime
import enum
import json
import math
import time
import warnings
from concurrent.futures import Executor
from http import HTTPStatus
from http.cookies import SimpleCookie
from typing import (
TYPE_CHECKING,
Any,
Dict,
Iterator,
MutableMapping,
Optional,
Union,
cast,
)
from multidict import CIMultiDict, istr
from . import hdrs, payload
from .abc import AbstractStreamWriter
from .compression_utils import ZLibCompressor
from .helpers import (
ETAG_ANY,
QUOTED_ETAG_RE,
ETag,
HeadersMixin,
must_be_empty_body,
parse_http_date,
rfc822_formatted_time,
sentinel,
should_remove_content_length,
validate_etag_value,
)
from .http import SERVER_SOFTWARE, HttpVersion10, HttpVersion11
from .payload import Payload
from .typedefs import JSONEncoder, LooseHeaders
__all__ = ("ContentCoding", "StreamResponse", "Response", "json_response")
if TYPE_CHECKING:
from .web_request import BaseRequest
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: Optional[bool] = None
self._chunked = False
self._compression = False
self._compression_force: Optional[ContentCoding] = None
self._cookies = SimpleCookie()
self._req: Optional[BaseRequest] = None
self._payload_writer: Optional[AbstractStreamWriter] = None
self._eof_sent = False
self._must_be_empty_body: Optional[bool] = None
self._body_length = 0
self._state: Dict[str, Any] = {}
if headers is not None:
self._headers: CIMultiDict[str] = CIMultiDict(headers)
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) -> "Optional[asyncio.Task[None]]":
if self._req:
return self._req.task
else:
return 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,
) -> 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 = HTTPStatus(self._status).phrase
except ValueError:
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[bool] = None,
httponly: Optional[bool] = None,
version: Optional[str] = None,
samesite: 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
if samesite is not None:
c["samesite"] = samesite
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.
"""
return parse_http_date(self._headers.get(hdrs.LAST_MODIFIED))
@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
@property
def etag(self) -> Optional[ETag]:
quoted_value = self._headers.get(hdrs.ETAG)
if not quoted_value:
return None
elif quoted_value == ETAG_ANY:
return ETag(value=ETAG_ANY)
match = QUOTED_ETAG_RE.fullmatch(quoted_value)
if not match:
return None
is_weak, value = match.group(1, 2)
return ETag(
is_weak=bool(is_weak),
value=value,
)
@etag.setter
def etag(self, value: Optional[Union[ETag, str]]) -> None:
if value is None:
self._headers.pop(hdrs.ETAG, None)
elif (isinstance(value, str) and value == ETAG_ANY) or (
isinstance(value, ETag) and value.value == ETAG_ANY
):
self._headers[hdrs.ETAG] = ETAG_ANY
elif isinstance(value, str):
validate_etag_value(value)
self._headers[hdrs.ETAG] = f'"{value}"'
elif isinstance(value, ETag) and isinstance(value.value, str):
validate_etag_value(value.value)
hdr_value = f'W/"{value.value}"' if value.is_weak else f'"{value.value}"'
self._headers[hdrs.ETAG] = hdr_value
else:
raise ValueError(
f"Unsupported etag type: {type(value)}. "
f"etag must be str, ETag or None"
)
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(f"{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:
# Encoding comparisons should be case-insensitive
# https://www.rfc-editor.org/rfc/rfc9110#section-8.4.1
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
self._must_be_empty_body = must_be_empty_body(request.method, self.status)
return await self._start(request)
async def _start(self, request: "BaseRequest") -> AbstractStreamWriter:
self._req = request
writer = self._payload_writer = request._payload_writer
await self._prepare_headers()
await request._prepare_hook(self)
await self._write_headers()
return writer
async def _prepare_headers(self) -> None:
request = self._req
assert request is not None
writer = self._payload_writer
assert writer is not None
keep_alive = self._keep_alive
if keep_alive is None:
keep_alive = request.keep_alive
self._keep_alive = keep_alive
version = request.version
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)
)
if not self._must_be_empty_body:
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:
if not self._must_be_empty_body:
writer.enable_chunking()
headers[hdrs.TRANSFER_ENCODING] = "chunked"
elif not self._must_be_empty_body:
keep_alive = False
# HTTP 1.1: https://tools.ietf.org/html/rfc7230#section-3.3.2
# HTTP 1.0: https://tools.ietf.org/html/rfc1945#section-10.4
if self._must_be_empty_body:
if hdrs.CONTENT_LENGTH in headers and should_remove_content_length(
request.method, self.status
):
del headers[hdrs.CONTENT_LENGTH]
# https://datatracker.ietf.org/doc/html/rfc9112#section-6.1-10
# https://datatracker.ietf.org/doc/html/rfc9112#section-6.1-13
if hdrs.TRANSFER_ENCODING in headers:
del headers[hdrs.TRANSFER_ENCODING]
else:
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"
async def _write_headers(self) -> None:
request = self._req
assert request is not None
writer = self._payload_writer
assert writer is not None
# status line
version = request.version
status_line = "HTTP/{}.{} {} {}".format(
version[0], version[1], self._status, self._reason
)
await writer.write_headers(status_line, self._headers)
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 = f"{self._req.method} {self._req.path} "
else:
info = "not prepared"
return f"<{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: Optional[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[str] = CIMultiDict()
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: Optional[bytes] = None
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) -> None:
if body is None:
self._body: Optional[bytes] = None
self._body_payload: bool = False
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-type
if hdrs.CONTENT_TYPE not in headers:
headers[hdrs.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: Optional[Union[bytes, Payload]] = self._body
else:
body = self._compressed_body
assert not data, f"data arg is not supported, got {data!r}"
assert self._req is not None
assert self._payload_writer is not None
if body is not None:
if self._must_be_empty_body:
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 should_remove_content_length(request.method, self.status):
if hdrs.CONTENT_LENGTH in self._headers:
del self._headers[hdrs.CONTENT_LENGTH]
elif not self._chunked and hdrs.CONTENT_LENGTH not in self._headers:
if self._body_payload:
size = cast(Payload, self._body).size
if size is not None:
self._headers[hdrs.CONTENT_LENGTH] = str(size)
else:
body_len = len(self._body) if self._body else "0"
# https://www.rfc-editor.org/rfc/rfc9110.html#section-8.6-7
if body_len != "0" or (
self.status != 304 and request.method.upper() != hdrs.METH_HEAD
):
self._headers[hdrs.CONTENT_LENGTH] = str(body_len)
return await super()._start(request)
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
compressor = ZLibCompressor(
encoding=str(coding.value),
max_sync_chunk_size=self._zlib_executor_size,
executor=self._zlib_executor,
)
assert self._body is not None
if self._zlib_executor_size is None and len(self._body) > 1024 * 1024:
warnings.warn(
"Synchronous compression of large response bodies "
f"({len(self._body)} bytes) might block the async event loop. "
"Consider providing a custom value to zlib_executor_size/"
"zlib_executor response properties or disabling compression on it."
)
self._compressed_body = (
await compressor.compress(self._body) + compressor.flush()
)
assert self._compressed_body is not None
self._headers[hdrs.CONTENT_ENCODING] = coding.value
self._headers[hdrs.CONTENT_LENGTH] = str(len(self._compressed_body))
def json_response(
data: Any = sentinel,
*,
text: Optional[str] = None,
body: Optional[bytes] = None,
status: int = 200,
reason: Optional[str] = None,
headers: Optional[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,
)

216
dist/ba_data/python-site-packages/aiohttp/web_routedef.py vendored Normal file
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@ -0,0 +1,216 @@
import abc
import os # noqa
from typing import (
TYPE_CHECKING,
Any,
Callable,
Dict,
Iterator,
List,
Optional,
Sequence,
Type,
Union,
overload,
)
import attr
from . import hdrs
from .abc import AbstractView
from .typedefs import Handler, PathLike
if TYPE_CHECKING:
from .web_request import Request
from .web_response import StreamResponse
from .web_urldispatcher import AbstractRoute, UrlDispatcher
else:
Request = StreamResponse = UrlDispatcher = AbstractRoute = 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) -> List[AbstractRoute]:
pass # pragma: no cover
_HandlerType = Union[Type[AbstractView], Handler]
@attr.s(auto_attribs=True, frozen=True, repr=False, slots=True)
class RouteDef(AbstractRouteDef):
method: str
path: str
handler: _HandlerType
kwargs: Dict[str, Any]
def __repr__(self) -> str:
info = []
for name, value in sorted(self.kwargs.items()):
info.append(f", {name}={value!r}")
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) -> List[AbstractRoute]:
if self.method in hdrs.METH_ALL:
reg = getattr(router, "add_" + self.method.lower())
return [reg(self.path, self.handler, **self.kwargs)]
else:
return [
router.add_route(self.method, self.path, self.handler, **self.kwargs)
]
@attr.s(auto_attribs=True, frozen=True, repr=False, slots=True)
class StaticDef(AbstractRouteDef):
prefix: str
path: PathLike
kwargs: Dict[str, Any]
def __repr__(self) -> str:
info = []
for name, value in sorted(self.kwargs.items()):
info.append(f", {name}={value!r}")
return "<StaticDef {prefix} -> {path}" "{info}>".format(
prefix=self.prefix, path=self.path, info="".join(info)
)
def register(self, router: UrlDispatcher) -> List[AbstractRoute]:
resource = router.add_static(self.prefix, self.path, **self.kwargs)
routes = resource.get_info().get("routes", {})
return list(routes.values())
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: List[AbstractRouteDef] = []
def __repr__(self) -> str:
return f"<RouteTableDef count={len(self._items)}>"
@overload
def __getitem__(self, index: int) -> AbstractRouteDef:
...
@overload
def __getitem__(self, index: slice) -> List[AbstractRouteDef]:
...
def __getitem__(self, index): # type: ignore[no-untyped-def]
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 options(self, path: str, **kwargs: Any) -> _Deco:
return self.route(hdrs.METH_OPTIONS, 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))

409
dist/ba_data/python-site-packages/aiohttp/web_runner.py vendored Normal file
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import asyncio
import signal
import socket
import warnings
from abc import ABC, abstractmethod
from typing import Any, Awaitable, Callable, List, Optional, Set
from yarl import URL
from .typedefs import PathLike
from .web_app import Application
from .web_server import Server
try:
from ssl import SSLContext
except ImportError:
SSLContext = object # type: ignore[misc,assignment]
__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", "_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")
if shutdown_timeout != 60.0:
msg = "shutdown_timeout should be set on BaseRunner"
warnings.warn(msg, DeprecationWarning, stacklevel=2)
runner._shutdown_timeout = shutdown_timeout
self._runner = runner
self._ssl_context = ssl_context
self._backlog = backlog
self._server: Optional[asyncio.AbstractServer] = None
@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 not None: # Maybe not started yet
self._server.close()
self._runner._unreg_site(self)
class TCPSite(BaseSite):
__slots__ = ("_host", "_port", "_reuse_address", "_reuse_port")
def __init__(
self,
runner: "BaseRunner",
host: Optional[str] = None,
port: Optional[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,
)
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"
host = "0.0.0.0" if self._host is None else self._host
return str(URL.build(scheme=scheme, host=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(
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: PathLike,
*,
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 f"{scheme}://unix:{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[attr-defined]
):
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[attr-defined]
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 = f"{scheme}://unix:{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(
server, sock=self._sock, ssl=self._ssl_context, backlog=self._backlog
)
class BaseRunner(ABC):
__slots__ = (
"shutdown_callback",
"_handle_signals",
"_kwargs",
"_server",
"_sites",
"_shutdown_timeout",
)
def __init__(
self,
*,
handle_signals: bool = False,
shutdown_timeout: float = 60.0,
**kwargs: Any,
) -> None:
self.shutdown_callback: Optional[Callable[[], Awaitable[None]]] = None
self._handle_signals = handle_signals
self._kwargs = kwargs
self._server: Optional[Server] = None
self._sites: List[BaseSite] = []
self._shutdown_timeout = shutdown_timeout
@property
def server(self) -> Optional[Server]:
return self._server
@property
def addresses(self) -> List[Any]:
ret: List[Any] = []
for site in self._sites:
server = site._server
if server is not None:
sockets = server.sockets # type: ignore[attr-defined]
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:
"""Call any shutdown hooks to help server close gracefully."""
async def cleanup(self) -> None:
# 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()
if self._server: # If setup succeeded
# Yield to event loop to ensure incoming requests prior to stopping the sites
# have all started to be handled before we proceed to close idle connections.
await asyncio.sleep(0)
self._server.pre_shutdown()
await self.shutdown()
if self.shutdown_callback:
await self.shutdown_callback()
await self._server.shutdown(self._shutdown_timeout)
await self._cleanup_server()
self._server = None
if self._handle_signals:
loop = asyncio.get_running_loop()
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(f"Site {site} is already registered in runner {self}")
self._sites.append(site)
def _check_site(self, site: BaseSite) -> None:
if site not in self._sites:
raise RuntimeError(f"Site {site} is not registered in runner {self}")
def _unreg_site(self, site: BaseSite) -> None:
if site not in self._sites:
raise RuntimeError(f"Site {site} is not registered in runner {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,
handler_cancellation: bool = False,
loop: Optional[asyncio.AbstractEventLoop] = None,
**kwargs: Any
) -> None:
self._loop = get_running_loop(loop)
self._connections: Dict[RequestHandler, asyncio.Transport] = {}
self._kwargs = kwargs
self.requests_count = 0
self.request_handler = handler
self.request_factory = request_factory or self._make_request
self.handler_cancellation = handler_cancellation
@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)
def pre_shutdown(self) -> None:
for conn in self._connections:
conn.close()
async def shutdown(self, timeout: Optional[float] = None) -> None:
coros = (conn.shutdown(timeout) for conn in self._connections)
await asyncio.gather(*coros)
self._connections.clear()
def __call__(self) -> RequestHandler:
try:
return RequestHandler(self, loop=self._loop, **self._kwargs)
except TypeError:
# Failsafe creation: remove all custom handler_args
kwargs = {
k: v
for k, v in self._kwargs.items()
if k in ["debug", "access_log_class"]
}
return RequestHandler(self, loop=self._loop, **kwargs)

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539
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import asyncio
import base64
import binascii
import hashlib
import json
import sys
from typing import Any, Final, Iterable, Optional, Tuple, cast
import attr
from multidict import CIMultiDict
from . import hdrs
from .abc import AbstractStreamWriter
from .helpers import call_later, set_exception, set_result
from .http import (
WS_CLOSED_MESSAGE,
WS_CLOSING_MESSAGE,
WS_KEY,
WebSocketError,
WebSocketReader,
WebSocketWriter,
WSCloseCode,
WSMessage,
WSMsgType as WSMsgType,
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
if sys.version_info >= (3, 11):
import asyncio as async_timeout
else:
import async_timeout
__all__ = (
"WebSocketResponse",
"WebSocketReady",
"WSMsgType",
)
THRESHOLD_CONNLOST_ACCESS: Final[int] = 5
@attr.s(auto_attribs=True, frozen=True, slots=True)
class WebSocketReady:
ok: bool
protocol: 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: Optional[str] = None
self._writer: Optional[WebSocketWriter] = None
self._reader: Optional[FlowControlDataQueue[WSMessage]] = None
self._closed = False
self._closing = False
self._conn_lost = 0
self._close_code: Optional[int] = None
self._loop: Optional[asyncio.AbstractEventLoop] = None
self._waiting: Optional[asyncio.Future[bool]] = None
self._exception: Optional[BaseException] = None
self._timeout = timeout
self._receive_timeout = receive_timeout
self._autoclose = autoclose
self._autoping = autoping
self._heartbeat = heartbeat
self._heartbeat_cb: Optional[asyncio.TimerHandle] = None
if heartbeat is not None:
self._pong_heartbeat = heartbeat / 2.0
self._pong_response_cb: Optional[asyncio.TimerHandle] = 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:
assert self._loop is not None
self._heartbeat_cb = call_later(
self._send_heartbeat,
self._heartbeat,
self._loop,
timeout_ceil_threshold=self._req._protocol._timeout_ceil_threshold
if self._req is not None
else 5,
)
def _send_heartbeat(self) -> None:
if self._heartbeat is not None and not self._closed:
assert self._loop is not None
# 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[union-attr]
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,
timeout_ceil_threshold=self._req._protocol._timeout_ceil_threshold
if self._req is not None
else 5,
)
def _pong_not_received(self) -> None:
if self._req is not None and self._req.transport is not None:
self._closed = True
self._set_code_close_transport(WSCloseCode.ABNORMAL_CLOSURE)
self._exception = asyncio.TimeoutError()
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=f"Unsupported version: {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=f"Handshake error: {key!r}")
except binascii.Error:
raise HTTPBadRequest(text=f"Handshake error: {key!r}") from None
accept_val = base64.b64encode(
hashlib.sha1(key.encode() + WS_KEY).digest()
).decode()
response_headers = CIMultiDict(
{
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,
protocol,
compress,
notakeover,
) # type: ignore[return-value]
def _pre_start(self, request: BaseRequest) -> Tuple[str, WebSocketWriter]:
self._loop = request._loop
headers, protocol, compress, notakeover = self._handshake(request)
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
self._reset_heartbeat()
loop = self._loop
assert loop is not None
self._reader = FlowControlDataQueue(request._protocol, 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 get_extra_info(self, name: str, default: Any = None) -> Any:
"""Get optional transport information.
If no value associated with ``name`` is found, ``default`` is returned.
"""
writer = self._writer
if writer is None:
return default
transport = writer.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:
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[override]
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 = WSCloseCode.OK, message: bytes = b"", drain: bool = True
) -> bool:
"""Close websocket connection."""
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 self._closed:
return False
self._closed = True
try:
await self._writer.close(code, message)
writer = self._payload_writer
assert writer is not None
if drain:
await writer.drain()
except (asyncio.CancelledError, asyncio.TimeoutError):
self._set_code_close_transport(WSCloseCode.ABNORMAL_CLOSURE)
raise
except Exception as exc:
self._exception = exc
self._set_code_close_transport(WSCloseCode.ABNORMAL_CLOSURE)
return True
if self._closing:
self._close_transport()
return True
reader = self._reader
assert reader is not None
try:
async with async_timeout.timeout(self._timeout):
msg = await reader.read()
except asyncio.CancelledError:
self._set_code_close_transport(WSCloseCode.ABNORMAL_CLOSURE)
raise
except Exception as exc:
self._exception = exc
self._set_code_close_transport(WSCloseCode.ABNORMAL_CLOSURE)
return True
if msg.type == WSMsgType.CLOSE:
self._set_code_close_transport(msg.data)
return True
self._set_code_close_transport(WSCloseCode.ABNORMAL_CLOSURE)
self._exception = asyncio.TimeoutError()
return True
def _set_closing(self, code: WSCloseCode) -> None:
"""Set the close code and mark the connection as closing."""
self._closing = True
self._close_code = code
def _set_code_close_transport(self, code: WSCloseCode) -> None:
"""Set the close code and close the transport."""
self._close_code = code
self._close_transport()
def _close_transport(self) -> None:
"""Close the transport."""
if self._req is not None and self._req.transport is not None:
self._req.transport.close()
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:
async with async_timeout.timeout(timeout or self._receive_timeout):
msg = await self._reader.read()
self._reset_heartbeat()
finally:
waiter = self._waiting
set_result(waiter, True)
self._waiting = None
except asyncio.TimeoutError:
raise
except EofStream:
self._close_code = WSCloseCode.OK
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._set_closing(WSCloseCode.ABNORMAL_CLOSURE)
await self.close()
return WSMessage(WSMsgType.ERROR, exc, None)
if msg.type == WSMsgType.CLOSE:
self._set_closing(msg.data)
# Could be closed while awaiting reader.
if not self._closed and self._autoclose:
# The client is likely going to close the
# connection out from under us so we do not
# want to drain any pending writes as it will
# likely result writing to a broken pipe.
await self.close(drain=False)
elif msg.type == WSMsgType.CLOSING:
self._set_closing(WSCloseCode.OK)
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 cast(str, msg.data)
async def receive_bytes(self, *, timeout: Optional[float] = None) -> bytes:
msg = await self.receive(timeout)
if msg.type != WSMsgType.BINARY:
raise TypeError(f"Received message {msg.type}:{msg.data!r} is not bytes")
return cast(bytes, 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
return msg
def _cancel(self, exc: BaseException) -> None:
# web_protocol calls this from connection_lost
# or when the server is shutting down.
self._closing = True
if self._reader is not None:
set_exception(self._reader, exc)

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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
except ImportError: # pragma: no cover
ssl = None # type: ignore[assignment]
SSLContext = object # type: ignore[misc,assignment]
__all__ = ("GunicornWebWorker", "GunicornUVLoopWebWorker")
class GunicornWebWorker(base.Worker): # type: ignore[misc,no-any-unimported]
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: Optional[asyncio.Task[None]] = None
self.exit_code = 0
self._notify_waiter: Optional[asyncio.Future[bool]] = None
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")
self.loop.run_until_complete(self.loop.shutdown_asyncgens())
self.loop.close()
sys.exit(self.exit_code)
async def _run(self) -> None:
runner = None
if isinstance(self.wsgi, Application):
app = self.wsgi
elif asyncio.iscoroutinefunction(self.wsgi):
wsgi = await self.wsgi()
if isinstance(wsgi, web.AppRunner):
runner = wsgi
app = runner.app
else:
app = wsgi
else:
raise RuntimeError(
"wsgi app should be either Application or "
"async function returning Application, got {}".format(self.wsgi)
)
if runner is None:
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
),
shutdown_timeout=self.cfg.graceful_timeout / 100 * 95,
)
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,
)
await site.start()
# If our parent changed then we shut down.
pid = os.getpid()
try:
while self.alive: # type: ignore[has-type]
self.notify()
cnt = server.requests_count
if self.max_requests and cnt > self.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: Optional["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)
# Reset signals so Gunicorn doesn't swallow subprocess return codes
# See: https://github.com/aio-libs/aiohttp/issues/6130
def handle_quit(self, sig: int, frame: Optional[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: Optional[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()

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pip

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Apache License
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http://www.apache.org/licenses/
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See the License for the specific language governing permissions and
limitations under the License.

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Metadata-Version: 2.1
Name: aiosignal
Version: 1.3.1
Summary: aiosignal: a list of registered asynchronous callbacks
Home-page: https://github.com/aio-libs/aiosignal
Maintainer: aiohttp team <team@aiohttp.org>
Maintainer-email: team@aiohttp.org
License: Apache 2.0
Project-URL: Chat: Gitter, https://gitter.im/aio-libs/Lobby
Project-URL: CI: GitHub Actions, https://github.com/aio-libs/aiosignal/actions
Project-URL: Coverage: codecov, https://codecov.io/github/aio-libs/aiosignal
Project-URL: Docs: RTD, https://docs.aiosignal.org
Project-URL: GitHub: issues, https://github.com/aio-libs/aiosignal/issues
Project-URL: GitHub: repo, https://github.com/aio-libs/aiosignal
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 :: Only
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Development Status :: 5 - Production/Stable
Classifier: Operating System :: POSIX
Classifier: Operating System :: MacOS :: MacOS X
Classifier: Operating System :: Microsoft :: Windows
Classifier: Framework :: AsyncIO
Requires-Python: >=3.7
Description-Content-Type: text/x-rst
License-File: LICENSE
Requires-Dist: frozenlist (>=1.1.0)
=========
aiosignal
=========
.. image:: https://github.com/aio-libs/aiosignal/workflows/CI/badge.svg
:target: https://github.com/aio-libs/aiosignal/actions?query=workflow%3ACI
:alt: GitHub status for master branch
.. image:: https://codecov.io/gh/aio-libs/aiosignal/branch/master/graph/badge.svg
:target: https://codecov.io/gh/aio-libs/aiosignal
:alt: codecov.io status for master branch
.. image:: https://badge.fury.io/py/aiosignal.svg
:target: https://pypi.org/project/aiosignal
:alt: Latest PyPI package version
.. image:: https://readthedocs.org/projects/aiosignal/badge/?version=latest
:target: https://aiosignal.readthedocs.io/
:alt: Latest Read The Docs
.. image:: https://img.shields.io/discourse/topics?server=https%3A%2F%2Faio-libs.discourse.group%2F
:target: https://aio-libs.discourse.group/
:alt: Discourse group for io-libs
.. image:: https://badges.gitter.im/Join%20Chat.svg
:target: https://gitter.im/aio-libs/Lobby
:alt: Chat on Gitter
Introduction
============
A project to manage callbacks in `asyncio` projects.
``Signal`` is a list of registered asynchronous callbacks.
The signal's life-cycle has two stages: after creation its content
could be filled by using standard list operations: ``sig.append()``
etc.
After you call ``sig.freeze()`` the signal is *frozen*: adding, removing
and dropping callbacks is forbidden.
The only available operation is calling the previously registered
callbacks by using ``await sig.send(data)``.
For concrete usage examples see the `Signals
<https://docs.aiohttp.org/en/stable/web_advanced.html#aiohttp-web-signals>
section of the `Web Server Advanced
<https://docs.aiohttp.org/en/stable/web_advanced.html>` chapter of the `aiohttp
documentation`_.
Installation
------------
::
$ pip install aiosignal
The library requires Python 3.6 or newer.
Documentation
=============
https://aiosignal.readthedocs.io/
Communication channels
======================
*gitter chat* https://gitter.im/aio-libs/Lobby
Requirements
============
- Python >= 3.6
- frozenlist >= 1.0.0
License
=======
``aiosignal`` is offered under the Apache 2 license.
Source code
===========
The project is hosted on GitHub_
Please file an issue in the `bug tracker
<https://github.com/aio-libs/aiosignal/issues>`_ if you have found a bug
or have some suggestions to improve the library.
.. _GitHub: https://github.com/aio-libs/aiosignal
.. _aiohttp documentation: https://docs.aiohttp.org/

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aiosignal-1.3.1.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
aiosignal-1.3.1.dist-info/LICENSE,sha256=b9UkPpLdf5jsacesN3co50kFcJ_1J6W_mNbQJjwE9bY,11332
aiosignal-1.3.1.dist-info/METADATA,sha256=c0HRnlYzfXKztZPTFDlPfygizTherhG5WdwXlvco0Ug,4008
aiosignal-1.3.1.dist-info/RECORD,,
aiosignal-1.3.1.dist-info/WHEEL,sha256=ZL1lC_LiPDNRgDnOl2taCMc83aPEUZgHHv2h-LDgdiM,92
aiosignal-1.3.1.dist-info/top_level.txt,sha256=z45aNOKGDdrI1roqZY3BGXQ22kJFPHBmVdwtLYLtXC0,10
aiosignal/__init__.py,sha256=zQNfFYRSd84bswvpFv8ZWjEr5DeYwV3LXbMSyo2222s,867
aiosignal/__init__.pyi,sha256=xeCddYSS8fZAkz8S4HuKSR2IDe3N7RW_LKcXDPPA1Xk,311
aiosignal/__pycache__/__init__.cpython-312.pyc,,
aiosignal/py.typed,sha256=47DEQpj8HBSa-_TImW-5JCeuQeRkm5NMpJWZG3hSuFU,0

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Wheel-Version: 1.0
Generator: bdist_wheel (0.38.2)
Root-Is-Purelib: true
Tag: py3-none-any

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aiosignal

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from frozenlist import FrozenList
__version__ = "1.3.1"
__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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from typing import Any, Generic, TypeVar
from 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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# SPDX-License-Identifier: MIT
"""
Classes Without Boilerplate
"""
from functools import partial
from typing import Callable
from . import converters, exceptions, filters, setters, validators
from ._cmp import cmp_using
from ._compat import Protocol
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 ._next_gen import define, field, frozen, mutable
from ._version_info import VersionInfo
s = attributes = attrs
ib = attr = attrib
dataclass = partial(attrs, auto_attribs=True) # happy Easter ;)
class AttrsInstance(Protocol):
pass
__all__ = [
"Attribute",
"AttrsInstance",
"Factory",
"NOTHING",
"asdict",
"assoc",
"astuple",
"attr",
"attrib",
"attributes",
"attrs",
"cmp_using",
"converters",
"define",
"evolve",
"exceptions",
"field",
"fields",
"fields_dict",
"filters",
"frozen",
"get_run_validators",
"has",
"ib",
"make_class",
"mutable",
"resolve_types",
"s",
"set_run_validators",
"setters",
"validate",
"validators",
]
def _make_getattr(mod_name: str) -> Callable:
"""
Create a metadata proxy for packaging information that uses *mod_name* in
its warnings and errors.
"""
def __getattr__(name: str) -> str:
dunder_to_metadata = {
"__title__": "Name",
"__copyright__": "",
"__version__": "version",
"__version_info__": "version",
"__description__": "summary",
"__uri__": "",
"__url__": "",
"__author__": "",
"__email__": "",
"__license__": "license",
}
if name not in dunder_to_metadata:
msg = f"module {mod_name} has no attribute {name}"
raise AttributeError(msg)
import sys
import warnings
if sys.version_info < (3, 8):
from importlib_metadata import metadata
else:
from importlib.metadata import metadata
if name not in ("__version__", "__version_info__"):
warnings.warn(
f"Accessing {mod_name}.{name} is deprecated and will be "
"removed in a future release. Use importlib.metadata directly "
"to query for attrs's packaging metadata.",
DeprecationWarning,
stacklevel=2,
)
meta = metadata("attrs")
if name == "__license__":
return "MIT"
if name == "__copyright__":
return "Copyright (c) 2015 Hynek Schlawack"
if name in ("__uri__", "__url__"):
return meta["Project-URL"].split(" ", 1)[-1]
if name == "__version_info__":
return VersionInfo._from_version_string(meta["version"])
if name == "__author__":
return meta["Author-email"].rsplit(" ", 1)[0]
if name == "__email__":
return meta["Author-email"].rsplit("<", 1)[1][:-1]
return meta[dunder_to_metadata[name]]
return __getattr__
__getattr__ = _make_getattr(__name__)

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@ -0,0 +1,555 @@
import enum
import sys
from typing import (
Any,
Callable,
Dict,
Generic,
List,
Mapping,
Optional,
Protocol,
Sequence,
Tuple,
Type,
TypeVar,
Union,
overload,
)
# `import X as X` is required to make these public
from . import converters as converters
from . import exceptions as exceptions
from . import filters as filters
from . import setters as setters
from . import validators as validators
from ._cmp import cmp_using as cmp_using
from ._typing_compat import AttrsInstance_
from ._version_info import VersionInfo
if sys.version_info >= (3, 10):
from typing import TypeGuard
else:
from typing_extensions import TypeGuard
if sys.version_info >= (3, 11):
from typing import dataclass_transform
else:
from typing_extensions import dataclass_transform
__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)
_EqOrderType = Union[bool, Callable[[Any], Any]]
_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[Any]"]], List["Attribute[Any]"]
]
# 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]]]
# We subclass this here to keep the protocol's qualified name clean.
class AttrsInstance(AttrsInstance_, Protocol):
pass
_A = TypeVar("_A", bound=type[AttrsInstance])
class _Nothing(enum.Enum):
NOTHING = enum.auto()
NOTHING = _Nothing.NOTHING
# 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.
if sys.version_info >= (3, 8):
from typing import Literal
@overload
def Factory(factory: Callable[[], _T]) -> _T: ...
@overload
def Factory(
factory: Callable[[Any], _T],
takes_self: Literal[True],
) -> _T: ...
@overload
def Factory(
factory: Callable[[], _T],
takes_self: Literal[False],
) -> _T: ...
else:
@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: _EqOrderType
eq: _EqOrderType
order: _EqOrderType
hash: Optional[bool]
init: bool
converter: Optional[_ConverterType]
metadata: Dict[Any, Any]
type: Optional[Type[_T]]
kw_only: bool
on_setattr: _OnSetAttrType
alias: Optional[str]
def evolve(self, **changes: Any) -> "Attribute[Any]": ...
# 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[_EqOrderType] = ...,
hash: Optional[bool] = ...,
init: bool = ...,
metadata: Optional[Mapping[Any, Any]] = ...,
type: None = ...,
converter: None = ...,
factory: None = ...,
kw_only: bool = ...,
eq: Optional[_EqOrderType] = ...,
order: Optional[_EqOrderType] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
alias: Optional[str] = ...,
) -> 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[_EqOrderType] = ...,
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[_EqOrderType] = ...,
order: Optional[_EqOrderType] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
alias: Optional[str] = ...,
) -> _T: ...
# This form catches an explicit default argument.
@overload
def attrib(
default: _T,
validator: Optional[_ValidatorArgType[_T]] = ...,
repr: _ReprArgType = ...,
cmp: Optional[_EqOrderType] = ...,
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[_EqOrderType] = ...,
order: Optional[_EqOrderType] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
alias: Optional[str] = ...,
) -> _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[_EqOrderType] = ...,
hash: Optional[bool] = ...,
init: bool = ...,
metadata: Optional[Mapping[Any, Any]] = ...,
type: object = ...,
converter: Optional[_ConverterType] = ...,
factory: Optional[Callable[[], _T]] = ...,
kw_only: bool = ...,
eq: Optional[_EqOrderType] = ...,
order: Optional[_EqOrderType] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
alias: Optional[str] = ...,
) -> 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] = ...,
alias: Optional[str] = ...,
type: Optional[type] = ...,
) -> 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[_EqOrderType] = ...,
order: Optional[_EqOrderType] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
alias: Optional[str] = ...,
type: Optional[type] = ...,
) -> _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[_EqOrderType] = ...,
order: Optional[_EqOrderType] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
alias: Optional[str] = ...,
type: Optional[type] = ...,
) -> _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[_EqOrderType] = ...,
order: Optional[_EqOrderType] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
alias: Optional[str] = ...,
type: Optional[type] = ...,
) -> Any: ...
@overload
@dataclass_transform(order_default=True, field_specifiers=(attrib, field))
def attrs(
maybe_cls: _C,
these: Optional[Dict[str, Any]] = ...,
repr_ns: Optional[str] = ...,
repr: bool = ...,
cmp: Optional[_EqOrderType] = ...,
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[_EqOrderType] = ...,
order: Optional[_EqOrderType] = ...,
auto_detect: bool = ...,
collect_by_mro: bool = ...,
getstate_setstate: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
field_transformer: Optional[_FieldTransformer] = ...,
match_args: bool = ...,
unsafe_hash: Optional[bool] = ...,
) -> _C: ...
@overload
@dataclass_transform(order_default=True, field_specifiers=(attrib, field))
def attrs(
maybe_cls: None = ...,
these: Optional[Dict[str, Any]] = ...,
repr_ns: Optional[str] = ...,
repr: bool = ...,
cmp: Optional[_EqOrderType] = ...,
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[_EqOrderType] = ...,
order: Optional[_EqOrderType] = ...,
auto_detect: bool = ...,
collect_by_mro: bool = ...,
getstate_setstate: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
field_transformer: Optional[_FieldTransformer] = ...,
match_args: bool = ...,
unsafe_hash: Optional[bool] = ...,
) -> Callable[[_C], _C]: ...
@overload
@dataclass_transform(field_specifiers=(attrib, field))
def define(
maybe_cls: _C,
*,
these: Optional[Dict[str, Any]] = ...,
repr: bool = ...,
unsafe_hash: 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 = ...,
getstate_setstate: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
field_transformer: Optional[_FieldTransformer] = ...,
match_args: bool = ...,
) -> _C: ...
@overload
@dataclass_transform(field_specifiers=(attrib, field))
def define(
maybe_cls: None = ...,
*,
these: Optional[Dict[str, Any]] = ...,
repr: bool = ...,
unsafe_hash: 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 = ...,
getstate_setstate: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
field_transformer: Optional[_FieldTransformer] = ...,
match_args: bool = ...,
) -> Callable[[_C], _C]: ...
mutable = define
@overload
@dataclass_transform(frozen_default=True, field_specifiers=(attrib, field))
def frozen(
maybe_cls: _C,
*,
these: Optional[Dict[str, Any]] = ...,
repr: bool = ...,
unsafe_hash: 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 = ...,
getstate_setstate: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
field_transformer: Optional[_FieldTransformer] = ...,
match_args: bool = ...,
) -> _C: ...
@overload
@dataclass_transform(frozen_default=True, field_specifiers=(attrib, field))
def frozen(
maybe_cls: None = ...,
*,
these: Optional[Dict[str, Any]] = ...,
repr: bool = ...,
unsafe_hash: 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 = ...,
getstate_setstate: Optional[bool] = ...,
on_setattr: Optional[_OnSetAttrArgType] = ...,
field_transformer: Optional[_FieldTransformer] = ...,
match_args: bool = ...,
) -> Callable[[_C], _C]: ...
def fields(cls: Type[AttrsInstance]) -> Any: ...
def fields_dict(cls: Type[AttrsInstance]) -> Dict[str, Attribute[Any]]: ...
def validate(inst: AttrsInstance) -> None: ...
def resolve_types(
cls: _A,
globalns: Optional[Dict[str, Any]] = ...,
localns: Optional[Dict[str, Any]] = ...,
attribs: Optional[List[Attribute[Any]]] = ...,
include_extras: bool = ...,
) -> _A: ...
# 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, ...] = ...,
class_body: Optional[Dict[str, Any]] = ...,
repr_ns: Optional[str] = ...,
repr: bool = ...,
cmp: Optional[_EqOrderType] = ...,
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[_EqOrderType] = ...,
order: Optional[_EqOrderType] = ...,
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
# XXX: remember to fix attrs.asdict/astuple too!
def asdict(
inst: AttrsInstance,
recurse: bool = ...,
filter: Optional[_FilterType[Any]] = ...,
dict_factory: Type[Mapping[Any, Any]] = ...,
retain_collection_types: bool = ...,
value_serializer: Optional[
Callable[[type, Attribute[Any], Any], Any]
] = ...,
tuple_keys: Optional[bool] = ...,
) -> Dict[str, Any]: ...
# TODO: add support for returning NamedTuple from the mypy plugin
def astuple(
inst: AttrsInstance,
recurse: bool = ...,
filter: Optional[_FilterType[Any]] = ...,
tuple_factory: Type[Sequence[Any]] = ...,
retain_collection_types: bool = ...,
) -> Tuple[Any, ...]: ...
def has(cls: type) -> TypeGuard[Type[AttrsInstance]]: ...
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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# SPDX-License-Identifier: MIT
import functools
import types
from ._make import _make_ne
_operation_names = {"eq": "==", "lt": "<", "le": "<=", "gt": ">", "ge": ">="}
def cmp_using(
eq=None,
lt=None,
le=None,
gt=None,
ge=None,
require_same_type=True,
class_name="Comparable",
):
"""
Create a class that can be passed into `attrs.field`'s ``eq``, ``order``,
and ``cmp`` arguments to customize field comparison.
The resulting class will have a full set of ordering methods if at least
one of ``{lt, le, gt, ge}`` and ``eq`` are provided.
:param Optional[callable] eq: `callable` used to evaluate equality of two
objects.
:param Optional[callable] lt: `callable` used to evaluate whether one
object is less than another object.
:param Optional[callable] le: `callable` used to evaluate whether one
object is less than or equal to another object.
:param Optional[callable] gt: `callable` used to evaluate whether one
object is greater than another object.
:param Optional[callable] ge: `callable` used to evaluate whether one
object is greater than or equal to another object.
:param bool require_same_type: When `True`, equality and ordering methods
will return `NotImplemented` if objects are not of the same type.
:param Optional[str] class_name: Name of class. Defaults to 'Comparable'.
See `comparison` for more details.
.. versionadded:: 21.1.0
"""
body = {
"__slots__": ["value"],
"__init__": _make_init(),
"_requirements": [],
"_is_comparable_to": _is_comparable_to,
}
# Add operations.
num_order_functions = 0
has_eq_function = False
if eq is not None:
has_eq_function = True
body["__eq__"] = _make_operator("eq", eq)
body["__ne__"] = _make_ne()
if lt is not None:
num_order_functions += 1
body["__lt__"] = _make_operator("lt", lt)
if le is not None:
num_order_functions += 1
body["__le__"] = _make_operator("le", le)
if gt is not None:
num_order_functions += 1
body["__gt__"] = _make_operator("gt", gt)
if ge is not None:
num_order_functions += 1
body["__ge__"] = _make_operator("ge", ge)
type_ = types.new_class(
class_name, (object,), {}, lambda ns: ns.update(body)
)
# Add same type requirement.
if require_same_type:
type_._requirements.append(_check_same_type)
# Add total ordering if at least one operation was defined.
if 0 < num_order_functions < 4:
if not has_eq_function:
# functools.total_ordering requires __eq__ to be defined,
# so raise early error here to keep a nice stack.
msg = "eq must be define is order to complete ordering from lt, le, gt, ge."
raise ValueError(msg)
type_ = functools.total_ordering(type_)
return type_
def _make_init():
"""
Create __init__ method.
"""
def __init__(self, value):
"""
Initialize object with *value*.
"""
self.value = value
return __init__
def _make_operator(name, func):
"""
Create operator method.
"""
def method(self, other):
if not self._is_comparable_to(other):
return NotImplemented
result = func(self.value, other.value)
if result is NotImplemented:
return NotImplemented
return result
method.__name__ = f"__{name}__"
method.__doc__ = (
f"Return a {_operation_names[name]} b. Computed by attrs."
)
return method
def _is_comparable_to(self, other):
"""
Check whether `other` is comparable to `self`.
"""
return all(func(self, other) for func in self._requirements)
def _check_same_type(self, other):
"""
Return True if *self* and *other* are of the same type, False otherwise.
"""
return other.value.__class__ is self.value.__class__

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from typing import Any, Callable, Optional, Type
_CompareWithType = Callable[[Any, Any], bool]
def cmp_using(
eq: Optional[_CompareWithType] = ...,
lt: Optional[_CompareWithType] = ...,
le: Optional[_CompareWithType] = ...,
gt: Optional[_CompareWithType] = ...,
ge: Optional[_CompareWithType] = ...,
require_same_type: bool = ...,
class_name: str = ...,
) -> Type: ...

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# SPDX-License-Identifier: MIT
import inspect
import platform
import sys
import threading
from collections.abc import Mapping, Sequence # noqa: F401
from typing import _GenericAlias
PYPY = platform.python_implementation() == "PyPy"
PY_3_8_PLUS = sys.version_info[:2] >= (3, 8)
PY_3_9_PLUS = sys.version_info[:2] >= (3, 9)
PY310 = sys.version_info[:2] >= (3, 10)
PY_3_12_PLUS = sys.version_info[:2] >= (3, 12)
if sys.version_info < (3, 8):
try:
from typing_extensions import Protocol
except ImportError: # pragma: no cover
Protocol = object
else:
from typing import Protocol # noqa: F401
class _AnnotationExtractor:
"""
Extract type annotations from a callable, returning None whenever there
is none.
"""
__slots__ = ["sig"]
def __init__(self, callable):
try:
self.sig = inspect.signature(callable)
except (ValueError, TypeError): # inspect failed
self.sig = None
def get_first_param_type(self):
"""
Return the type annotation of the first argument if it's not empty.
"""
if not self.sig:
return None
params = list(self.sig.parameters.values())
if params and params[0].annotation is not inspect.Parameter.empty:
return params[0].annotation
return None
def get_return_type(self):
"""
Return the return type if it's not empty.
"""
if (
self.sig
and self.sig.return_annotation is not inspect.Signature.empty
):
return self.sig.return_annotation
return None
# Thread-local global to track attrs instances which are already being repr'd.
# This is needed because there is no other (thread-safe) way to pass info
# about the instances that are already being repr'd through the call stack
# in order to ensure we don't perform infinite recursion.
#
# For instance, if an instance contains a dict which contains that instance,
# we need to know that we're already repr'ing the outside instance from within
# the dict's repr() call.
#
# This lives here rather than in _make.py so that the functions in _make.py
# don't have a direct reference to the thread-local in their globals dict.
# If they have such a reference, it breaks cloudpickle.
repr_context = threading.local()
def get_generic_base(cl):
"""If this is a generic class (A[str]), return the generic base for it."""
if cl.__class__ is _GenericAlias:
return cl.__origin__
return None

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