3.10.9

Bug fixes

• Fixed proxy headers being used in the ConnectionKey hash when a proxy was not being used -- by :user:bdraco.

  If default headers are used, they are also used for proxy headers. This could have led to creating connections that were not needed when one was already available.

  Related issues and pull requests on GitHub:
  #9368.

• Widened the type of the trace_request_ctx parameter of
  :meth:ClientSession.request() <aiohttp.ClientSession.request> and friends
  -- by :user:layday.

  Related issues and pull requests on GitHub:
  #9397.

Removals and backward incompatible breaking changes

• Fixed failure to try next host after single-host connection timeout -- by :user:brettdh.

  The default client :class:aiohttp.ClientTimeout params has changed to include a sock_connect timeout of 30 seconds so that this correct behavior happens by default.

  Related issues and pull requests on GitHub:
  #7342.

Miscellaneous internal changes

• Improved performance of resolving hosts with Python 3.12+ -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9342.

• Reduced memory required for timer objects created during the client request lifecycle -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9406.

---

3.10.8

Bug fixes

• Fixed cancellation leaking upwards on timeout -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9326.

---

3.10.7

Bug fixes

• Fixed assembling the :class:~yarl.URL for web requests when the host contains a non-default port or IPv6 address -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9309.

Miscellaneous internal changes

• Improved performance of determining if a URL is absolute -- by :user:bdraco.

  The property :attr:~yarl.URL.absolute is more performant than the method URL.is_absolute() and preferred when newer versions of yarl are used.

  Related issues and pull requests on GitHub:
  #9171.

• Replaced code that can now be handled by yarl -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9301.

---

3.10.6

Bug fixes

• Added :exc:aiohttp.ClientConnectionResetError. Client code that previously threw :exc:ConnectionResetError
  will now throw this -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9137.

• Fixed an unclosed transport ResourceWarning on web handlers -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8875.

• Fixed resolve_host() 'Task was destroyed but is pending' errors -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8967.

• Fixed handling of some file-like objects (e.g. tarfile.extractfile()) which raise AttributeError instead of OSError when fileno fails for streaming payload data -- by :user:ReallyReivax.

  Related issues and pull requests on GitHub:
  #6732.

• Fixed web router not matching pre-encoded URLs (requires yarl 1.9.6+) -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8898, #9267.

• Fixed an error when trying to add a route for multiple methods with a path containing a regex pattern -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8998.

• Fixed Response.text when body is a Payload -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #6485.

• Fixed compressed requests failing when no body was provided -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9108.

• Fixed client incorrectly reusing a connection when the previous message had not been fully sent -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8992.

• Fixed race condition that could cause server to close connection incorrectly at keepalive timeout -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9140.

• Fixed Python parser chunked handling with multiple Transfer-Encoding values -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8823.

• Fixed error handling after 100-continue so server sends 500 response instead of disconnecting -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8876.

• Stopped adding a default Content-Type header when response has no content -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8858.

• Added support for URL credentials with empty (zero-length) username, e.g. https://:password@host -- by :user:shuckc

  Related issues and pull requests on GitHub:
  #6494.

• Stopped logging exceptions from web.run_app() that would be raised regardless -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #6807.

• Implemented binding to IPv6 addresses in the pytest server fixture.

  Related issues and pull requests on GitHub:
  #4650.

• Fixed the incorrect use of flags for getnameinfo() in the Resolver --by :user:GitNMLee

  Link-Local IPv6 addresses can now be handled by the Resolver correctly.

  Related issues and pull requests on GitHub:
  #9032.

• Fixed StreamResponse.prepared to return True after EOF is sent -- by :user:arthurdarcet.

  Related issues and pull requests on GitHub:
  #5343.

• Changed make_mocked_request() to use empty payload by default -- by :user:rahulnht.

  Related issues and pull requests on GitHub:
  #7167.

• Used more precise type for ClientResponseError.headers, fixing some type errors when using them -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8768.

• Changed behavior when returning an invalid response to send a 500 response -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8845.

• Fixed response reading from closed session to throw an error immediately instead of timing out -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8878.

• Fixed CancelledError from one cleanup context stopping other contexts from completing -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8908.

• Fixed changing scheme/host in Response.clone() for absolute URLs -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8990.

• Fixed Site.name when host is an empty string -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8929.

• Updated Python parser to reject messages after a close message, matching C parser behaviour -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9018.

• Fixed creation of SSLContext inside of :py:class:aiohttp.TCPConnector with multiple event loops in different threads -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9029.

• Fixed (on Python 3.11+) some edge cases where a task cancellation may get incorrectly suppressed -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9030.

• Fixed exception information getting lost on HttpProcessingError -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9052.

• Fixed If-None-Match not using weak comparison -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9063.

• Fixed badly encoded charset crashing when getting response text instead of falling back to charset detector.

  Related issues and pull requests on GitHub:
  #9160.

• Rejected \n in reason values to avoid sending broken HTTP messages -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9167.

• Changed :py:meth:ClientResponse.raise_for_status() <aiohttp.ClientResponse.raise_for_status> to only release the connection when invoked outside an async with context -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9239.

Features

• Improved type on params to match the underlying type allowed by yarl -- by :user:lpetre.

  Related issues and pull requests on GitHub:
  #8564.

• Declared Python 3.13 supported -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #8748.

Removals and backward incompatible breaking changes

• Improved middleware performance -- by :user:bdraco.

  The set_current_app method was removed from UrlMappingMatchInfo because it is no longer used, and it was unlikely external caller would ever use it.

  Related issues and pull requests on GitHub:
  #9200.

• Increased minimum yarl version to 1.12.0 -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9267.

Improved documentation

• Clarified that GracefulExit needs to be handled in AppRunner and ServerRunner when using handle_signals=True. -- by :user:Daste745

  Related issues and pull requests on GitHub:
  #4414.

• Clarified that auth parameter in ClientSession will persist and be included with any request to any origin, even during redirects to different origins. -- by :user:MaximZemskov.

  Related issues and pull requests on GitHub:
  #6764.

• Clarified which timeout exceptions happen on which timeouts -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8968.

• Updated ClientSession parameters to match current code -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8991.

Packaging updates and notes for downstreams

• Fixed test_client_session_timeout_zero to not require internet access -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9004.

Miscellaneous internal changes

• Improved performance of making requests when there are no auto headers to skip -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #8847.

• Exported aiohttp.TraceRequestHeadersSentParams -- by :user:Hadock-is-ok.

  Related issues and pull requests on GitHub:
  #8947.

• Avoided tracing overhead in the http writer when there are no active traces -- by user:bdraco.

  Related issues and pull requests on GitHub:
  #9031.

• Improved performance of reify Cython implementation -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9054.

• Use :meth:URL.extend_query() <yarl.URL.extend_query> to extend query params (requires yarl 1.11.0+) -- by :user:bdraco.

  If yarl is older than 1.11.0, the previous slower hand rolled version will be used.

  Related issues and pull requests on GitHub:
  #9068.

• Improved performance of checking if a host is an IP Address -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9095.

• Significantly improved performance of middlewares -- by :user:bdraco.

  The construction of the middleware wrappers is now cached and is built once per handler instead of on every request.

  Related issues and pull requests on GitHub:
  #9158, #9170.

• Improved performance of web requests -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9168, #9169, #9172, #9174, #9175, #9241.

• Improved performance of starting web requests when there is no response prepare hook -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9173.

• Significantly improved performance of expiring cookies -- by :user:bdraco.

  Expiring cookies has been redesigned to use :mod:heapq instead of a linear search, to better scale.

  Related issues and pull requests on GitHub:
  #9203.

• Significantly sped up filtering cookies -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9204.

---

3.10.6rc2

No significant changes.

---

3.10.6rc1

Removals and backward incompatible breaking changes

• Increased minimum yarl version to 1.12.0 -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9267.

---

3.10.6rc0

Bug fixes

• Implemented binding to IPv6 addresses in the pytest server fixture.

  Related issues and pull requests on GitHub:
  #4650.

• Fixed StreamResponse.prepared to return True after EOF is sent -- by :user:arthurdarcet.

  Related issues and pull requests on GitHub:
  #5343.

• Fixed Response.text when body is a Payload -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #6485.

• Added support for URL credentials with empty (zero-length) username, e.g. https://:password@host -- by :user:shuckc

  Related issues and pull requests on GitHub:
  #6494.

• Fixed handling of some file-like objects (e.g. tarfile.extractfile()) which raise AttributeError instead of OSError when fileno fails for streaming payload data -- by :user:ReallyReivax.

  Related issues and pull requests on GitHub:
  #6732.

• Stopped logging exceptions from web.run_app() that would be raised regardless -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #6807.

• Changed make_mocked_request() to use empty payload by default -- by :user:rahulnht.

  Related issues and pull requests on GitHub:
  #7167.

• Used more precise type for ClientResponseError.headers, fixing some type errors when using them -- by :user:Dreamorcerer.

  Related issues and pull requests on GitHub:
  #8768.

• Fixed Python parser chunked handling with multiple Transfer-Encoding values -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8823.

• Changed behavior when returning an invalid response to send a 500 response -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8845.

• Stopped adding a default Content-Type header when response has no content -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8858.

• Fixed an unclosed transport ResourceWarning on web handlers -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8875.

• Fixed error handling after 100-continue so server sends 500 response instead of disconnecting -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8876.

• Fixed response reading from closed session to throw an error immediately instead of timing out -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8878.

• Fixed web router not matching pre-encoded URLs (requires yarl 1.9.6+) -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8898.

• Fixed CancelledError from one cleanup context stopping other contexts from completing -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8908.

• Fixed Site.name when host is an empty string -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8929.

• Fixed resolve_host() 'Task was destroyed but is pending' errors -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8967.

• Fixed changing scheme/host in Response.clone() for absolute URLs -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8990.

• Fixed client incorrectly reusing a connection when the previous message had not been fully sent -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8992.

• Fixed an error when trying to add a route for multiple methods with a path containing a regex pattern -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8998.

• Updated Python parser to reject messages after a close message, matching C parser behaviour -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9018.

• Fixed creation of SSLContext inside of :py:class:aiohttp.TCPConnector with multiple event loops in different threads -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9029.

• Fixed (on Python 3.11+) some edge cases where a task cancellation may get incorrectly suppressed -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9030.

• Fixed the incorrect use of flags for getnameinfo() in the Resolver --by :user:GitNMLee

  Link-Local IPv6 addresses can now be handled by the Resolver correctly.

  Related issues and pull requests on GitHub:
  #9032.

• Fixed exception information getting lost on HttpProcessingError -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9052.

• Fixed If-None-Match not using weak comparison -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9063.

• Fixed compressed requests failing when no body was provided -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9108.

• Added :exc:aiohttp.ClientConnectionResetError. Client code that previously threw :exc:ConnectionResetError
  will now throw this -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9137.

• Fixed race condition that could cause server to close connection incorrectly at keepalive timeout -- by :user:Dreamosorcerer.

  Related issues and pull requests on GitHub:
  #9140.

• Fixed badly encoded charset crashing when getting response text instead of falling back to charset detector.

  Related issues and pull requests on GitHub:
  #9160.

• Rejected \n in reason values to avoid sending broken HTTP messages -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9167.

• Changed :py:meth:ClientResponse.raise_for_status() <aiohttp.ClientResponse.raise_for_status> to only release the connection when invoked outside an async with context -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9239.

Features

• Improved type on params to match the underlying type allowed by yarl -- by :user:lpetre.

  Related issues and pull requests on GitHub:
  #8564.

Removals and backward incompatible breaking changes

• Improved middleware performance -- by :user:bdraco.

  The set_current_app method was removed from UrlMappingMatchInfo because it is no longer used, and it was unlikely external caller would ever use it.

  Related issues and pull requests on GitHub:
  #9200.

Improved documentation

• Clarified that GracefulExit needs to be handled in AppRunner and ServerRunner when using handle_signals=True. -- by :user:Daste745

  Related issues and pull requests on GitHub:
  #4414.

• Clarified that auth parameter in ClientSession will persist and be included with any request to any origin, even during redirects to different origins. -- by :user:MaximZemskov.

  Related issues and pull requests on GitHub:
  #6764.

• Clarified which timeout exceptions happen on which timeouts -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8968.

• Updated ClientSession parameters to match current code -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8991.

Packaging updates and notes for downstreams

• Fixed test_client_session_timeout_zero to not require internet access -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #9004.

Miscellaneous internal changes

• Improved performance of making requests when there are no auto headers to skip -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #8847.

• Exported aiohttp.TraceRequestHeadersSentParams -- by :user:Hadock-is-ok.

  Related issues and pull requests on GitHub:
  #8947.

• Avoided tracing overhead in the http writer when there are no active traces -- by user:bdraco.

  Related issues and pull requests on GitHub:
  #9031.

• Improved performance of reify Cython implementation -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9054.

• Use :meth:URL.extend_query() <yarl.URL.extend_query> to extend query params (requires yarl 1.11.0+) -- by :user:bdraco.

  If yarl is older than 1.11.0, the previous slower hand rolled version will be used.

  Related issues and pull requests on GitHub:
  #9068.

• Improved performance of checking if a host is an IP Address -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9095.

• Significantly improved performance of middlewares -- by :user:bdraco.

  The construction of the middleware wrappers is now cached and is built once per handler instead of on every request.

  Related issues and pull requests on GitHub:
  #9158, #9170.

• Improved performance of web requests -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9168, #9169, #9172, #9174, #9175, #9241.

• Improved performance of starting web requests when there is no response prepare hook -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9173.

• Significantly improved performance of expiring cookies -- by :user:bdraco.

  Expiring cookies has been redesigned to use :mod:heapq instead of a linear search, to better scale.

  Related issues and pull requests on GitHub:
  #9203.

• Significantly sped up filtering cookies -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #9204.

---

3.10.5

Bug fixes

• Fixed :meth:aiohttp.ClientResponse.json() not setting status when :exc:aiohttp.ContentTypeError is raised -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #8742.

Miscellaneous internal changes

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

  Related issues and pull requests on GitHub:
  #8736, #8747.

---

3.10.4

Bug fixes

• Fixed decoding base64 chunk in BodyPartReader -- by :user:hyzyla.

  Related issues and pull requests on GitHub:
  #3867.

• Fixed a race closing the server-side WebSocket where the close code would not reach the client -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #8680.

• Fixed unconsumed exceptions raised by the WebSocket heartbeat -- by :user:bdraco.

  If the heartbeat ping raised an exception, it would not be consumed and would be logged as an warning.

  Related issues and pull requests on GitHub:
  #8685.

• Fixed an edge case in the Python parser when chunk separators happen to align with network chunks -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8720.

Improved documentation

• Added aiohttp-apischema to supported libraries -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8700.

Miscellaneous internal changes

• Improved performance of starting request handlers with Python 3.12+ -- by :user:bdraco.

  This change is a followup to #8661 to make the same optimization for Python 3.12+ where the request is connected.

  Related issues and pull requests on GitHub:
  #8681.

---

3.10.3

Bug fixes

• Fixed multipart reading when stream buffer splits the boundary over several read() calls -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  #8653.

• Fixed :py:class:aiohttp.TCPConnector doing blocking I/O in the event loop to create the SSLContext -- by :user:bdraco.

  The blocking I/O would only happen once per verify mode. However, it could cause the event loop to block for a long time if the SSLContext creation is slow, which is more likely during startup when the disk cache is not yet present.

  Related issues and pull requests on GitHub:
  #8672.

Miscellaneous internal changes

• Improved performance of :py:meth:~aiohttp.ClientWebSocketResponse.receive and :py:meth:~aiohttp.web.WebSocketResponse.receive when there is no timeout. -- by :user:bdraco.

  The timeout context manager is now avoided when there is no timeout as it accounted for up to 50% of the time spent in the :py:meth:~aiohttp.ClientWebSocketResponse.receive and :py:meth:~aiohttp.web.WebSocketResponse.receive methods.

  Related issues and pull requests on GitHub:
  #8660.

• Improved performance of starting request handlers with Python 3.12+ -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #8661.

• Improved performance of HTTP keep-alive checks -- by :user:bdraco.

  Previously, when processing a request for a keep-alive connection, the keep-alive check would happen every second; the check is now rescheduled if it fires too early instead.

  Related issues and pull requests on GitHub:
  #8662.

• Improved performance of generating random WebSocket mask -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #8667.

---