[New-bugs-announce] [issue28212] Closing server in asyncio is not efficient

Константин Волков report at bugs.python.org
Tue Sep 20 05:10:08 EDT 2016

New submission from Константин Волков:

When you close asyncio socket server it closes all connection sockets, remove its readers and do "cancel" for readers. Problem is that, that after this reader tasks are leaved alone in "cancelling" state. They wouldn`t be really cancelled, because they need a loop step for that. But they are not in loop now(they suggest execution throught selector, but they not presented there after removal). Cancelling step woldn`t be done and tasks wouldn`t be really finished, and no finishing actions can be done.
I think that It is good idea such tasks to "ready" queue, so they can be executed in normal task way after removing from selector.

components: asyncio
messages: 277019
nosy: gvanrossum, yselivanov, Константин Волков
priority: normal
severity: normal
status: open
title: Closing server in asyncio is not efficient
versions: Python 3.5, Python 3.6

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