RuntimeError on page refresh

[FelixFunk]

Environment

Python: 3.11
Quart: 0.19.6
Hypercorn: 0.17.3
Firefox: 132.0

CMD

hypercorn run_service:quart_app -w 3 -b 0.0.0.0:44444 --debug --certfile "../dev/ssl/cert.pem" --keyfile "../dev/ssl/key.pem"

Issue

Sometimes during a page refresh the internal process crashes with the following stacktrace:

2024-11-05 10:46:26,466 | ERROR: Task exception was never retrieved                         
future: <Task finished name='Task-8321' coro=<ASGIHTTPConnection.handle_request() done, defined at `.venv/lib/python3.11/site-packages/quart/asgi.py:96> exception=RuntimeError('TaskGroup <TaskGroup cancelling> is finished') created at /usr/local/anaconda3/lib/python3.11/asyncio/tasks.py:670>                                                                                                            
source_traceback: Object created at (most recent call last):                          
  File "<string>", line 1, in <module>                                                                                                                              
  File "/usr/local/anaconda3/lib/python3.11/multiprocessing/spawn.py", line 122, in spawn_main                                                             
    exitcode = _main(fd, parent_sentinel)                                                                                                                   
  File "/usr/local/anaconda3/lib/python3.11/multiprocessing/spawn.py", line 135, in _main                                                         
    return self._bootstrap(parent_sentinel)                                                                                                                     
  File "/usr/local/anaconda3/lib/python3.11/multiprocessing/process.py", line 314, in _bootstrap                                                                 
    self.run()                          
  File "/usr/local/anaconda3/lib/python3.11/multiprocessing/process.py", line 108, in run                                                                       
    self._target(*self._args, **self._kwargs)                                                                                                               
  File ".venv/lib/python3.11/site-packages/hypercorn/asyncio/run.py", line 196, in asyncio_worker               
    _run(                               
  File ".venv/lib/python3.11/site-packages/hypercorn/asyncio/run.py", line 234, in _run                             
    runner.run(main(shutdown_trigger=shutdown_trigger))
  File "/usr/local/anaconda3/lib/python3.11/asyncio/runners.py", line 118, in run
    return self._loop.run_until_complete(task)
  File "/usr/local/anaconda3/lib/python3.11/asyncio/base_events.py", line 640, in run_until_complete
    self.run_forever()
  File "/usr/local/anaconda3/lib/python3.11/asyncio/base_events.py", line 607, in run_forever
    self._run_once()
  File "/usr/local/anaconda3/lib/python3.11/asyncio/base_events.py", line 1914, in _run_once
    handle._run()
  File "/usr/local/anaconda3/lib/python3.11/asyncio/events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
  File ".venv/lib/python3.11/site-packages/hypercorn/asyncio/task_group.py", line 27, in _handle
    await app(scope, receive, send, sync_spawn, call_soon)
  File ".venv/lib/python3.11/site-packages/hypercorn/app_wrappers.py", line 34, in __call__
    await self.app(scope, receive, send)
  File ".venv/lib/python3.11/site-packages/quart/app.py", line 1667, in __call__
    await self.asgi_app(scope, receive, send)
  File ".venv/lib/python3.11/site-packages/quart/app.py", line 1693, in asgi_app
    await asgi_handler(receive, send)
  File ".venv/lib/python3.11/site-packages/quart/asgi.py", line 47, in __call__
    handler_task = asyncio.ensure_future(self.handle_request(request, send))
  File "/usr/local/anaconda3/lib/python3.11/asyncio/tasks.py", line 649, in ensure_future
    return _ensure_future(coro_or_future, loop=loop)
  File "/usr/local/anaconda3/lib/python3.11/asyncio/tasks.py", line 670, in _ensure_future
    return loop.create_task(coro_or_future) (base_events.py:1771)
Traceback (most recent call last):
  File ".venv/lib/python3.11/site-packages/quart/asgi.py", line 107, in handle_request
    await asyncio.wait_for(self._send_response(send, response), timeout=timeout)
  File "/usr/local/anaconda3/lib/python3.11/asyncio/tasks.py", line 479, in wait_for
    return fut.result()
           ^^^^^^^^^^^^
  File ".venv/lib/python3.11/site-packages/quart/asgi.py", line 142, in _send_response
    await send(
  File ".venv/lib/python3.11/site-packages/hypercorn/protocol/http_stream.py", line 200, in app_send
    await self._send_closed()
  File ".venv/lib/python3.11/site-packages/hypercorn/protocol/http_stream.py", line 247, in _send_closed
    await self.send(StreamClosed(stream_id=self.stream_id))
  File ".venv/lib/python3.11/site-packages/hypercorn/protocol/h2.py", line 230, in stream_send
    await self.send(Updated(idle=idle))
  File ".venv/lib/python3.11/site-packages/hypercorn/asyncio/tcp_server.py", line 90, in protocol_send
    await self.idle_task.restart(self._task_group, self._idle_timeout)
  File ".venv/lib/python3.11/site-packages/hypercorn/asyncio/worker_context.py", line 23, in restart
    self._handle = task_group._task_group.create_task(action())  # type: ignore
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/anaconda3/lib/python3.11/asyncio/taskgroups.py", line 159, in create_task
    raise RuntimeError(f"TaskGroup {self!r} is finished")
RuntimeError: TaskGroup <TaskGroup cancelling> is finished

In my current setup, this will always result in a closed websocket and therefore a disconnected service.

If there is anything i can do about it by adjusting the configuration of the webserver, please let me know.