Configuring Supervisor For Daphne (Django Channels)
Answer : In the supervisor ASGI config file, in the following line command=/home/ubuntu/django_app/venv/bin/daphne -u /run/daphne/daphne%(process_num)d.sock --fd 0 --access-log - --proxy-headers mysite.asgi:application replace --fd 0 with --endpoint fd:fileno=0 . Issue: https://github.com/django/daphne/issues/234 Fabio's answer, with replacing the file descriptor parameter for the endpoint parameter, presents a quick workaround for this problem (which appeared to be a bug in the Daphne code). However, the fix in Daphne repository was quickly committed so that the original instructions work well. As a side note (for people still getting critical listen failures which I wrote about in the original question), please be sure that the physical location for socket files ( /run/daphne/ in my case) is accessible - I spent too much time just to discover that simply creating the daphne folder in /run catalog does the job (even though I run everything with sudo )... For precautionary m...