Aiohttp

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

Bug fixes
---------

- Disabled TLS in TLS warning (when using HTTPS proxies) for uvloop and newer Python versions -- by :user:`lezgomatt`.


*Related issues and pull requests on GitHub:*
:issue:`7686`.



- Fixed reading fragmented WebSocket messages when the payload was masked -- by :user:`bdraco`.

The problem first appeared in 3.11.17


*Related issues and pull requests on GitHub:*
:issue:`10764`.




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

- Optimized web server performance when access logging is disabled by reducing time syscalls -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10713`.



- Improved web server performance when connection can be reused -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10714`.



- Improved performance of the WebSocket reader -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10740`.



- Improved performance of the WebSocket reader with large messages -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10744`.




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

Bug fixes
---------

- Replaced deprecated ``asyncio.iscoroutinefunction`` with its counterpart from ``inspect``
-- by :user:`layday`.


*Related issues and pull requests on GitHub:*
:issue:`10634`.



- Fixed :class:`multidict.CIMultiDict` being mutated when passed to :class:`aiohttp.web.Response` -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10672`.




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

Bug fixes
---------

- Reverted explicitly closing sockets if an exception is raised during ``create_connection`` -- by :user:`bdraco`.

This change originally appeared in aiohttp 3.11.13


*Related issues and pull requests on GitHub:*
:issue:`10464`, :issue:`10617`, :issue:`10656`.




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

- Improved performance of WebSocket buffer handling -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10601`.



- Improved performance of serializing headers -- by :user:`bdraco`.


*Related issues and pull requests on GitHub:*
:issue:`10625`.




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

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`.




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

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`.




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