websockets.exceptions.ConnectionClosedError: code = 1006 (connection closed abnormally [internal]), no reason

[dima-dmytruk23]

OS: Linux Ubuntu 20.04
Python 3.8.5 (default, Jan 27 2021, 15:41:15)
starlette==0.13.6
uvicorn==0.13.3
websockets==8.1

I am implementing a websocket connection between a client and a server with a webrtс connection established.

The server receives the data, processes it and sends the result to the client.
The server processes files using aiofiles. Also requests for google api go away.

But when posting a response - I get an error - websockets.exceptions.ConnectionClosedError: code = 1006 (connection closed abnormally [internal]), no reason

When I work with files, the error flies out immediately.
When I work with google api - after a while.

So I understand, is it related with a timeout of some kind?

Traceback

ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/websockets/protocol.py", line 827, in transfer_data
    message = await self.read_message()
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/websockets/protocol.py", line 895, in read_message
    frame = await self.read_data_frame(max_size=self.max_size)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/websockets/protocol.py", line 971, in read_data_frame
    frame = await self.read_frame(max_size)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/websockets/protocol.py", line 1047, in read_frame
    frame = await Frame.read(
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/websockets/framing.py", line 105, in read
    data = await reader(2)
  File "/usr/lib/python3.8/asyncio/streams.py", line 721, in readexactly
    raise exceptions.IncompleteReadError(incomplete, n)
asyncio.exceptions.IncompleteReadError: 0 bytes read on a total of 2 expected bytes

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/uvicorn/protocols/websockets/websockets_impl.py", line 157, in run_asgi
    result = await self.app(self.scope, self.asgi_receive, self.asgi_send)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/uvicorn/middleware/proxy_headers.py", line 45, in __call__
    return await self.app(scope, receive, send)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/fastapi/applications.py", line 199, in __call__
    await super().__call__(scope, receive, send)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/starlette/applications.py", line 111, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/starlette/middleware/errors.py", line 146, in __call__
    await self.app(scope, receive, send)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/starlette/exceptions.py", line 58, in __call__
    await self.app(scope, receive, send)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/starlette/routing.py", line 566, in __call__
    await route.handle(scope, receive, send)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/starlette/routing.py", line 283, in handle
    await self.app(scope, receive, send)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/starlette/routing.py", line 57, in app
    await func(session)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/fastapi/routing.py", line 247, in app
    await dependant.call(**values)
  File "./src/interfaces/websocket_consumer.py", line 15, in websocket_endpoint
    await manager.broadcast(data, websocket)
  File "./src/services/helpers/websocket_manager.py", line 47, in broadcast
    await websocket.send_text("some text")
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/starlette/websockets.py", line 128, in send_text
    await self.send({"type": "websocket.send", "text": data})
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/starlette/websockets.py", line 68, in send
    await self._send(message)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/uvicorn/protocols/websockets/websockets_impl.py", line 218, in asgi_send
    await self.send(data)
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/websockets/protocol.py", line 555, in send
    await self.ensure_open()
  File "/home/m0nte-cr1st0/.virtualenvs/hypercube/lib/python3.8/site-packages/websockets/protocol.py", line 803, in ensure_open
    raise self.connection_closed_exc()
websockets.exceptions.ConnectionClosedError: code = 1006 (connection closed abnormally [internal]), no reason

[n01-1]

I'm having the same problem. Is there any fix for it?

[Kludex]

Many things have changed since this was reported.

If this still happening with the latest version of each dependency, please let me know.