STINNER Victor <vstin...@redhat.com> added the comment:
Something else. The bug occurs when CancelIoEx() (on the current overlapped WSARecv()) fails internally with ERROR_NOT_FOUND. According to overlapped.c, it means: /* CancelIoEx returns ERROR_NOT_FOUND if the I/O completed in-between */ HasOverlappedIoCompleted() returns 0 in that case. The problem is that currently, Overlapped.cancel() also returns None in that case, and later the asyncio IOCP loop ignores the completion event and so drops incoming received data. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33694> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com