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Title: gh-65920: Implement `socket.sendfile` with `TransmitFile` on Windows by aisk · Pull Request #112337 · python/cpython · GitHub

Open Graph Title: gh-65920: Implement `socket.sendfile` with `TransmitFile` on Windows by aisk · Pull Request #112337 · python/cpython

X Title: gh-65920: Implement `socket.sendfile` with `TransmitFile` on Windows by aisk · Pull Request #112337 · python/cpython

Description: Using the Overlapped.TransmitFile in _overlapped module to implement socket.sendfile; Add Overlapped.getresultex to implement the timeout functionality, which have almost the same codes as exists Overlapped.getresult, just with diffenernt arguments. I split the Overlapped.getresult in to another function to share the codes. And some thought on os.sendfile: #102898 (comment) Issue: gh-65920

Open Graph Description: Using the Overlapped.TransmitFile in _overlapped module to implement socket.sendfile; Add Overlapped.getresultex to implement the timeout functionality, which have almost the same codes as exists O...

X Description: Using the Overlapped.TransmitFile in _overlapped module to implement socket.sendfile; Add Overlapped.getresultex to implement the timeout functionality, which have almost the same codes as exists O...

Opengraph URL: https://github.com/python/cpython/pull/112337

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gh-65920: Implement socket.sendfile with TransmitFile on Windows https://github.com/python/cpython/pull/112337/files#top
Show all changes 20 commits https://github.com/python/cpython/pull/112337/files
490df91 add socket._sendfile_use_transmitfile aisk Nov 23, 2023 https://github.com/python/cpython/pull/112337/commits/490df91637b86087b6017d8d104f3f10791cc429
f94935d add Overlapped.getresultex to implement timeout in sendfile aisk Nov 23, 2023 https://github.com/python/cpython/pull/112337/commits/f94935df1632812e866c2a27de557433b07bf3ad
87c88fa using transmitfile for sendfile on windows aisk Nov 23, 2023 https://github.com/python/cpython/pull/112337/commits/87c88faa88c33cdc927868a09025ab23f77c0208
3f7259f fix tests aisk Nov 23, 2023 https://github.com/python/cpython/pull/112337/commits/3f7259fa7dbba7bc81e076f9e7da6ac4d65e0b22
619ef22 skip tests on non windows platforms aisk Nov 23, 2023 https://github.com/python/cpython/pull/112337/commits/619ef2205fdaf69b5c50bc65dd0203d86faf907c
19dde50 fix generated file aisk Nov 23, 2023 https://github.com/python/cpython/pull/112337/commits/19dde50495b71c22ffb1566f645966c74f8eacca
3dd3bc1 Merge branch 'main' into windows-socket-sendfile aisk Nov 23, 2023 https://github.com/python/cpython/pull/112337/commits/3dd3bc1c89098fe1e75731e9eab70025237e14eb
a4ce9df Merge branch 'main' into windows-socket-sendfile erlend-aasland Jan 6, 2024 https://github.com/python/cpython/pull/112337/commits/a4ce9dfa36ce38a5c3d5f0b3c268a5c6ef19c8f9
77deb6e Update Misc/NEWS.d/next/Windows/2023-11-23-22-25-16.gh-issue-65920.6w… aisk Jan 7, 2024 https://github.com/python/cpython/pull/112337/commits/77deb6e7156800ff41ac56e6bbf09cf00788c6f7
47eb386 Update Lib/socket.py aisk Jan 7, 2024 https://github.com/python/cpython/pull/112337/commits/47eb386d7d7bb688eeecb99e4507a714b496a976
8bd91bb Merge branch 'main' into windows-socket-sendfile aisk Apr 24, 2024 https://github.com/python/cpython/pull/112337/commits/8bd91bb15db3e9fb4bac5938aa03d3fcd5aadabb
b153f22 Merge remote-tracking branch 'origin/main' into windows-socket-sendfile aisk Dec 2, 2025 https://github.com/python/cpython/pull/112337/commits/b153f22afe551407c31b83c6ab71eb633a9056c4
048f6a1 Call TransmitFile in chunk aisk Mar 1, 2026 https://github.com/python/cpython/pull/112337/commits/048f6a14131a70c3b85a6dfb861836e26fae7f54
d6ed576 Merge remote-tracking branch 'upstream/main' into windows-socket-send… aisk Mar 1, 2026 https://github.com/python/cpython/pull/112337/commits/d6ed576fcb3113175f08fcc8ed9bbb391484a2b5
6edf90f Fix news entry aisk Mar 1, 2026 https://github.com/python/cpython/pull/112337/commits/6edf90fe572e68794177d379e82a2934b75a5940
f2de502 Fallback if _overlapped is not usage aisk Mar 1, 2026 https://github.com/python/cpython/pull/112337/commits/f2de5026a8536f7ad31ab02217cede9cfc532f02
deee263 Update generated files aisk Mar 1, 2026 https://github.com/python/cpython/pull/112337/commits/deee263ac2e48c01977ee98032c2f939af73659d
1a92bfc Merge remote-tracking branch 'upstream/main' into windows-socket-send… aisk Jun 26, 2026 https://github.com/python/cpython/pull/112337/commits/1a92bfcc80e12f484ad13a1c7034890bbbe467f3
63d384b Fix file position on error and fallback in socket.sendfile aisk Jun 27, 2026 https://github.com/python/cpython/pull/112337/commits/63d384b1f05efcc5d131a6323a3e303767b236bb
76e9bc8 Update sendfile docs and add getresultex docstring aisk Jun 27, 2026 https://github.com/python/cpython/pull/112337/commits/76e9bc8391297e226351ac536b6f6bd2b1072805
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