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bpo-30329: Catch Windows error 10022 on shutdown() (#1538)

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Catch the Windows socket WSAEINVAL error (code 10022) in imaplib and
poplib on shutdown(SHUT_RDWR): An invalid operation was attempted

This error occurs sometimes on SSL connections.
This commit is contained in:
Victor Stinner 2017-05-15 17:33:45 +02:00 • committed by GitHub
parent edef358ed6
commit 83a2c28798
3 changed files with 16 additions and 6 deletions
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9
Lib/poplib.py
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@ -288,9 +288,12 @@ class POP3:
if sock is not None:
try:
sock.shutdown(socket.SHUT_RDWR)
except OSError as e:
# The server might already have closed the connection
if e.errno != errno.ENOTCONN:
except OSError as exc:
# The server might already have closed the connection.
# On Windows, this may result in WSAEINVAL (error 10022):
# An invalid operation was attempted.
if (exc.errno != errno.ENOTCONN
and getattr(exc, 'winerror', 0) != 10022):
raise
finally:
sock.close()