RuntimeError: unable to perform operation on UnixTransport; the handler is closed

[JulianOrteil]

Whenever a user disconnects or changes pages on my Django webserver, the following error is logged:

[2022-03-10 12:33:07 -0600] [35291] [DEBUG] < CLOSE 1001 (going away) [2 bytes]
[2022-03-10 12:33:07 -0600] [35291] [DEBUG] = connection is CLOSING
[2022-03-10 12:33:07 -0600] [35291] [DEBUG] > CLOSE 1001 (going away) [2 bytes]
[2022-03-10 12:33:07 -0600] [35291] [DEBUG] = connection is CLOSED
[2022-03-10 12:33:07 -0600] [35291] [DEBUG] ! failing connection with code 1006
[2022-03-10 12:33:07 -0600] [35291] [DEBUG] x half-closing TCP connection
[2022-03-10 12:33:07 -0600] [35291] [ERROR] closing handshake failed
Traceback (most recent call last):
  File "/srv/DTAutomation/venv/lib/python3.8/site-packages/websockets/legacy/server.py", line 240, in handler
    await self.close()
  File "/srv/DTAutomation/venv/lib/python3.8/site-packages/websockets/legacy/protocol.py", line 779, in close
    await asyncio.shield(self.close_connection_task)
  File "/srv/DTAutomation/venv/lib/python3.8/site-packages/websockets/legacy/protocol.py", line 1312, in close_connection
    self.transport.write_eof()
  File "uvloop/handles/stream.pyx", line 696, in uvloop.loop.UVStream.write_eof
  File "uvloop/handles/handle.pyx", line 159, in uvloop.loop.UVHandle._ensure_alive
RuntimeError: unable to perform operation on <UnixTransport closed=True reading=False 0x7faa10730380>; the handler is closed
[2022-03-10 12:33:07 -0600] [35291] [INFO] connection closed

The environment is Gunicorn/Uvicorn + NGINX + Redis setup for an entirely ASGI webserver. This error also does not appear to affect any operation of my server, it's just an annoyance in the log files.

Jules

[Kludex]

I think we have an issue for that already. I'm on my phone, so I'll not look for it, but you can easily find with the keywords of the error above. I'm going to see if I can work on this over the weekend.

[JulianOrteil]

Correct. #1251 is very similar. Only difference is theirs is TCPTransport and mine is UnixTransport if that would make any difference. Like I said, its not causing any issues as far as I can tell beyond being a logfile annoyance.