[New-bugs-announce] [issue31922] Can't receive replies from multicast UDP with asyncio

[Vincent Michel]

New submission from Vincent Michel <vxgmichel at gmail.com>:

It's currently not possible to receive replies from multicast UDP with asyncio, as reported in the following issue:

https://github.com/python/asyncio/issues/480

That's because asyncio connects the UDP socket to the broadcast address, causing all traffic from the receivers to be be dropped, as explained in this comment:
https://github.com/python/asyncio/issues/480#issuecomment-278703828

I already submitted a PR on the cpython repository:
https://github.com/python/cpython/pull/423

I figured it was better to report the issue here for better tracking.

----------
components: asyncio
messages: 305415
nosy: vxgmichel, yselivanov
priority: normal
pull_requests: 4196
severity: normal
status: open
title: Can't receive replies from multicast UDP with asyncio
type: behavior
versions: Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31922>
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