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gh-75128: Ignore EADDRNOTAVAIL error in asyncio.BaseEventLoop.create_server() #114420

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Merged
merged 1 commit into from
Jan 22, 2024
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gh-75128: Ignore EADDRNOTAVAIL error in asyncio.BaseEventLoop.create_server() #114420

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20 changes: 17 additions & 3 deletions Lib/asyncio/base_events.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@
import collections
import collections.abc
import concurrent.futures
import errno
import functools
import heapq
import itertools
Expand Down Expand Up @@ -1585,9 +1586,22 @@ async def create_server(
try:
sock.bind(sa)
except OSError as err:
raise OSError(err.errno, 'error while attempting '
'to bind on address %r: %s'
% (sa, err.strerror.lower())) from None
msg = ('error while attempting '
'to bind on address %r: %s'
% (sa, err.strerror.lower()))
if err.errno == errno.EADDRNOTAVAIL:
# Assume the family is not enabled (bpo-30945)
sockets.pop()
sock.close()
if self._debug:
logger.warning(msg)
continue
raise OSError(err.errno, msg) from None

if not sockets:
raise OSError('could not bind on any address out of %r'
% ([info[4] for info in infos],))

completed = True
finally:
if not completed:
Expand Down
2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Library/2024-01-22-12-10-34.gh-issue-75128.4FGlRS.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
Ignore an :exc:`OSError` in :meth:`asyncio.BaseEventLoop.create_server` when
IPv6 is available but the interface cannot actually support it.