Websockets - RuntimeError: Not within a request context #419
Description
When I close my application and the websocket is active, the server raise this uncaught stack of exception:
service | Traceback (most recent call last):
service | File "/usr/local/lib/python3.13/site-packages/uvicorn/protocols/websockets/wsproto_impl.py", line 331, in send
service | output = self.conn.send(wsproto.events.Message(data=data)) # type: ignore
service | File "/usr/local/lib/python3.13/site-packages/wsproto/__init__.py", line 64, in send
service | data += self.connection.send(event)
service | ~~~~~~~~~~~~~~~~~~~~^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/wsproto/connection.py", line 107, in send
service | raise LocalProtocolError(
service | f"Event {event} cannot be sent in state {self.state}."
service | )
service | wsproto.utilities.LocalProtocolError: Event Message(data='0', frame_finished=True, message_finished=True) cannot be sent in state ConnectionState.CLOSED.
service |
service | The above exception was the direct cause of the following exception:
service |
service | Traceback (most recent call last):
service | File "${MY_PATH}/notifications_route.py", line 109, in author_get_number_notification_unread
service | await websocket.send(str(result))
service | File "/usr/local/lib/python3.13/site-packages/quart/wrappers/websocket.py", line 68, in send
service | await self._send(data)
service | File "/usr/local/lib/python3.13/site-packages/quart/asgi.py", line 311, in send_data
service | await send({"type": "websocket.send", "bytes": None, "text": data})
service | File "/usr/local/lib/python3.13/site-packages/uvicorn/protocols/websockets/wsproto_impl.py", line 350, in send
service | raise ClientDisconnected from exc
service | uvicorn.protocols.utils.ClientDisconnected
service | [2025-03-06 12:15:10,875] ERROR in app: Exception on websocket /ws/author/notifications/unread
service | Traceback (most recent call last):
service | File "/usr/local/lib/python3.13/site-packages/uvicorn/protocols/websockets/wsproto_impl.py", line 331, in send
service | output = self.conn.send(wsproto.events.Message(data=data)) # type: ignore
service | File "/usr/local/lib/python3.13/site-packages/wsproto/__init__.py", line 64, in send
service | data += self.connection.send(event)
service | ~~~~~~~~~~~~~~~~~~~~^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/wsproto/connection.py", line 107, in send
service | raise LocalProtocolError(
service | f"Event {event} cannot be sent in state {self.state}."
service | )
service | wsproto.utilities.LocalProtocolError: Event Message(data='0', frame_finished=True, message_finished=True) cannot be sent in state ConnectionState.CLOSED.
service |
service | The above exception was the direct cause of the following exception:
service |
service | Traceback (most recent call last):
service | File "${MY_PATH}/notifications_route.py", line 109, in author_get_number_notification_unread
service | await websocket.send(str(result))
service | File "/usr/local/lib/python3.13/site-packages/quart/wrappers/websocket.py", line 68, in send
service | await self._send(data)
service | File "/usr/local/lib/python3.13/site-packages/quart/asgi.py", line 311, in send_data
service | await send({"type": "websocket.send", "bytes": None, "text": data})
service | File "/usr/local/lib/python3.13/site-packages/uvicorn/protocols/websockets/wsproto_impl.py", line 350, in send
service | raise ClientDisconnected from exc
service | uvicorn.protocols.utils.ClientDisconnected
service |
service | During handling of the above exception, another exception occurred:
service |
service | Traceback (most recent call last):
service | File "/usr/local/lib/python3.13/site-packages/uvicorn/protocols/websockets/wsproto_impl.py", line 341, in send
service | output = self.conn.send(wsproto.events.CloseConnection(code=code, reason=reason))
service | File "/usr/local/lib/python3.13/site-packages/wsproto/__init__.py", line 64, in send
service | data += self.connection.send(event)
service | ~~~~~~~~~~~~~~~~~~~~^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/wsproto/connection.py", line 107, in send
service | raise LocalProtocolError(
service | f"Event {event} cannot be sent in state {self.state}."
service | )
service | wsproto.utilities.LocalProtocolError: Event CloseConnection(code=1000, reason='') cannot be sent in state ConnectionState.CLOSED.
service |
service | The above exception was the direct cause of the following exception:
service |
service | Traceback (most recent call last):
service | File "/usr/local/lib/python3.13/site-packages/quart/app.py", line 1476, in handle_websocket
service | return await self.full_dispatch_websocket(websocket_context)
service | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/quart/app.py", line 1525, in full_dispatch_websocket
service | result = await self.handle_user_exception(error)
service | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/quart/app.py", line 1059, in handle_user_exception
service | raise error
service | File "/usr/local/lib/python3.13/site-packages/quart/app.py", line 1523, in full_dispatch_websocket
service | result = await self.dispatch_websocket(websocket_context)
service | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/quart/app.py", line 1613, in dispatch_websocket
service | return await self.ensure_async(handler)(**websocket_.view_args) # type: ignore[return-value]
service | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
service | File "${MY_PATH}/notifications_route.py", line 129, in author_get_number_notification_unread
service | await websocket.close(1000)
service | File "/usr/local/lib/python3.13/site-packages/quart/wrappers/websocket.py", line 104, in close
service | await self._close(code, reason)
service | File "/usr/local/lib/python3.13/site-packages/quart/asgi.py", line 348, in close_connection
service | await send({"type": "websocket.close", "code": code, "reason": reason})
service | File "/usr/local/lib/python3.13/site-packages/uvicorn/protocols/websockets/wsproto_impl.py", line 350, in send
service | raise ClientDisconnected from exc
service | uvicorn.protocols.utils.ClientDisconnected
service | ERROR: Exception in ASGI application
service | Traceback (most recent call last):
service | File "/usr/local/lib/python3.13/site-packages/uvicorn/protocols/websockets/wsproto_impl.py", line 235, in run_asgi
service | result = await self.app(self.scope, self.receive, self.send) # type: ignore[func-returns-value]
service | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/uvicorn/middleware/proxy_headers.py", line 60, in __call__
service | return await self.app(scope, receive, send)
service | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/quart/app.py", line 1735, in __call__
service | await self.asgi_app(scope, receive, send)
service | File "/usr/local/lib/python3.13/site-packages/quart/app.py", line 1761, in asgi_app
service | await asgi_handler(receive, send)
service | File "/usr/local/lib/python3.13/site-packages/quart/asgi.py", line 197, in __call__
service | raise_task_exceptions(done)
service | ~~~~~~~~~~~~~~~~~~~~~^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/quart/utils.py", line 186, in raise_task_exceptions
service | raise task.exception()
service | File "/usr/local/lib/python3.13/site-packages/quart/asgi.py", line 246, in handle_websocket
service | response = await _handle_exception(self.app, error)
service | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/quart/asgi.py", line 408, in _handle_exception
service | raise error
service | File "/usr/local/lib/python3.13/site-packages/quart/asgi.py", line 244, in handle_websocket
service | response = await self.app.handle_websocket(websocket)
service | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/quart/app.py", line 1480, in handle_websocket
service | return await self.handle_websocket_exception(error)
service | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/quart/app.py", line 1129, in handle_websocket_exception
service | server_error = await self.ensure_async(handler)(server_error) # type: ignore[assignment]
service | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/quart_cors/__init__.py", line 110, in wrapper
service | method = request.method
service | ^^^^^^^^^^^^^^
service | File "/usr/local/lib/python3.13/site-packages/werkzeug/local.py", line 318, in __get__
service | obj = instance._get_current_object()
service | File "/usr/local/lib/python3.13/site-packages/werkzeug/local.py", line 519, in _get_current_object
service | raise RuntimeError(unbound_message) from None
service | RuntimeError: Not within a request context
How can I solve this?
Update:
Maybe I found the solution. I just don't have to call await websocket.close(1000) if the user is already gone, removing it doesn't make appear again the error. Is this correct?
Environment:
- Python version: 3.13-slim-bookworm or 3.12-slim-bookworm + uvicorn
- Quart version: 0.20