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.

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