Aiohttp

====================

Bug fixes
---------

- Fixed an issue where dns queries were delayed indefinitely when an exception occurred in a ``trace.send_dns_cache_miss``
-- by :user:`logioniz`.


*Related issues and pull requests on GitHub:*
:issue:`10529`.



- Fixed DNS resolution on platforms that don't support ``socket.AI_ADDRCONFIG`` -- by :user:`maxbachmann`.


*Related issues and pull requests on GitHub:*
:issue:`10542`.



- The connector now raises :exc:`aiohttp.ClientConnectionError` instead of :exc:`OSError` when failing to explicitly close the socket after :py:meth:`asyncio.loop.create_connection` fails -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10551`.



- Break cyclic references at connection close when there was a traceback -- by :user:`bdraco`.

Special thanks to :user:`availov` for reporting the issue.


*Related issues and pull requests on GitHub:*
:issue:`10556`.



- Break cyclic references when there is an exception handling a request -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10569`.




Features
--------

- Improved logging on non-overlapping WebSocket client protocols to include the remote address -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10564`.




Miscellaneous internal changes
------------------------------

- Improved performance of parsing content types by adding a cache in the same manner currently done with mime types -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10552`.




----

====================

Bug fixes
---------

- Removed a break statement inside the finally block in :py:class:`~aiohttp.web.RequestHandler`
-- by :user:`Cycloctane`.


*Related issues and pull requests on GitHub:*
:issue:`10434`.



- Changed connection creation to explicitly close sockets if an exception is raised in the event loop's ``create_connection`` method -- by :user:`top-oai`.


*Related issues and pull requests on GitHub:*
:issue:`10464`.




Packaging updates and notes for downstreams
-------------------------------------------

- Fixed test ``test_write_large_payload_deflate_compression_data_in_eof_writelines`` failing with Python 3.12.9+ or 3.13.2+ -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10423`.




Miscellaneous internal changes
------------------------------

- Added human-readable error messages to the exceptions for WebSocket disconnects due to PONG not being received -- by :user:`bdraco`.

Previously, the error messages were empty strings, which made it hard to determine what went wrong.


*Related issues and pull requests on GitHub:*
:issue:`10422`.




----

====================

Bug fixes
---------

- ``MultipartForm.decode()`` now follows RFC1341 7.2.1 with a ``CRLF`` after the boundary
-- by :user:`imnotjames`.


*Related issues and pull requests on GitHub:*
:issue:`10270`.



- Restored the missing ``total_bytes`` attribute to ``EmptyStreamReader`` -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10387`.




Features
--------

- Updated :py:func:`~aiohttp.request` to make it accept ``_RequestOptions`` kwargs.
-- by :user:`Cycloctane`.


*Related issues and pull requests on GitHub:*
:issue:`10300`.



- Improved logging of HTTP protocol errors to include the remote address -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10332`.




Improved documentation
----------------------

- Added ``aiohttp-openmetrics`` to list of third-party libraries -- by :user:`jelmer`.


*Related issues and pull requests on GitHub:*
:issue:`10304`.




Packaging updates and notes for downstreams
-------------------------------------------

- Added missing files to the source distribution to fix ``Makefile`` targets.
Added a ``cythonize-nodeps`` target to run Cython without invoking pip to install dependencies.


*Related issues and pull requests on GitHub:*
:issue:`10366`.



- Started building armv7l musllinux wheels -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10404`.




Contributor-facing changes
--------------------------

- The CI/CD workflow has been updated to use `upload-artifact` v4 and `download-artifact` v4 GitHub Actions -- by :user:`silamon`.


*Related issues and pull requests on GitHub:*
:issue:`10281`.




Miscellaneous internal changes
------------------------------

- Restored support for zero copy writes when using Python 3.12 versions 3.12.9 and later or Python 3.13.2+ -- by :user:`bdraco`.

Zero copy writes were previously disabled due to :cve:`2024-12254` which is resolved in these Python versions.


*Related issues and pull requests on GitHub:*
:issue:`10137`.




----

====================

Bug fixes
---------

- Updated :py:meth:`~aiohttp.ClientSession.request` to reuse the ``quote_cookie`` setting from ``ClientSession._cookie_jar`` when processing cookies parameter.
-- by :user:`Cycloctane`.


*Related issues and pull requests on GitHub:*
:issue:`10093`.



- Fixed type of ``SSLContext`` for some static type checkers (e.g. pyright).


*Related issues and pull requests on GitHub:*
:issue:`10099`.



- Updated :meth:`aiohttp.web.StreamResponse.write` annotation to also allow :class:`bytearray` and :class:`memoryview` as inputs -- by :user:`cdce8p`.


*Related issues and pull requests on GitHub:*
:issue:`10154`.



- Fixed a hang where a connection previously used for a streaming
download could be returned to the pool in a paused state.
-- by :user:`javitonino`.


*Related issues and pull requests on GitHub:*
:issue:`10169`.




Features
--------

- Enabled ALPN on default SSL contexts. This improves compatibility with some
proxies which don't work without this extension.
-- by :user:`Cycloctane`.


*Related issues and pull requests on GitHub:*
:issue:`10156`.




Miscellaneous internal changes
------------------------------

- Fixed an infinite loop that can occur when using aiohttp in combination
with `async-solipsism`_ -- by :user:`bmerry`.

.. _async-solipsism: https://github.com/bmerry/async-solipsism


*Related issues and pull requests on GitHub:*
:issue:`10149`.




----

====================

Bug fixes
---------

- Fixed race condition in :class:`aiohttp.web.FileResponse` that could have resulted in an incorrect response if the file was replaced on the file system during ``prepare`` -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10101`, :issue:`10113`.



- Replaced deprecated call to :func:`mimetypes.guess_type` with :func:`mimetypes.guess_file_type` when using Python 3.13+ -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10102`.



- Disabled zero copy writes in the ``StreamWriter`` -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10125`.




----

===================

Bug fixes
---------

- Fixed invalid method logging unexpected being logged at exception level on subsequent connections -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10055`, :issue:`10076`.




Miscellaneous internal changes
------------------------------

- Improved performance of parsing headers when using the C parser -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10073`.




----