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gh-103462: Ensure SelectorSocketTransport.writelines registers a writer when data is still pending #103463

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Merged
kumaraditya303 merged 7 commits into from
Apr 13, 2023
Merged

gh-103462: Ensure SelectorSocketTransport.writelines registers a writer when data is still pending #103463

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273e1e7
Add explicit tests for writelines
alisaifee Apr 11, 2023
ce03f17
Schedule writer for remaining buffer in writelines
alisaifee Apr 12, 2023
8d2d34c
Merge branch 'main' into fix-incomplete-writeline
alisaifee Apr 12, 2023
c5a071e
Ensure tests using sendmsg are marked with skip
alisaifee Apr 12, 2023
7f2b1e7
Add NEWS entry
alisaifee Apr 12, 2023
d2bdce2
Merge branch 'main' into fix-incomplete-writeline
alisaifee Apr 12, 2023
239a80f
Update Misc/NEWS.d/next/Library/2023-04-12-06-00-02.gh-issue-103462.w…
kumaraditya303 Apr 13, 2023
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Schedule writer for remaining buffer in writelines 
If all the data in the buffer can't be written immediately
schedule a writer to handle the remaining data.
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@alisaifee
alisaifee committed Apr 12, 2023
commit ce03f17a778d91f83684466d471714a51f9b0bde
3 changes: 3 additions & 0 deletions Lib/asyncio/selector_events.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1176,6 +1176,9 @@ def writelines(self, list_of_data):
return
self._buffer.extend([memoryview(data) for data in list_of_data])
self._write_ready()
# If the entire buffer couldn't be written, register a write handler
if self._buffer:
self._loop._add_writer(self._sock_fd, self._write_ready)

def can_write_eof(self):
return True
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