[issue35913] asyncore: allow handling of half closed connections

[SilentGhost]

Change by SilentGhost <ghost.adh at runbox.com>:


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nosy: +giampaolo.rodola, josiahcarlson, stutzbach
versions: +Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35913>
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