New submission from Alexander Mohr: asyncio.selector_events.BaseSelectorEventLoop._sock_connect_cb is a callback based on the selector for a socket. There are certain situations when the selector triggers twice calling this callback twice, resulting in an InvalidStateError when it sets the Future to None. The way I triggered this was by having several parallel connections to the same host in a multiprocessing script. I suggest analyzing why this callback can be called twice and figuring out what the correct fix is. I monkey patched it by adding a fut.done() check at the top. If this information is not enough I can try to provide a sample script. Its currently reproducing in a fairly involved multiprocessing script.
---------- components: asyncio messages: 254433 nosy: gvanrossum, haypo, thehesiod, yselivanov priority: normal severity: normal status: open title: _sock_connect_cb can be called twice resulting in InvalidStateError type: behavior versions: Python 3.5 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue25593> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
