websocket-client: AttributeError: 'NoneType' object has no attribute 'connected'

My on_open callback sends some data to the server when the connection is established. Usually, it works, but some times i receive the following error.

The following exception is captured in the on_error callback.

Traceback (most recent call last):
  File "[...]/python3.5/site-packages/websocket/_app.py", line 278, in run_forever
    dispatcher.read(self.sock.sock, read)
  File "[...]/python3.5/site-packages/websocket/_app.py", line 48, in read
    while self.app.sock.connected:
AttributeError: 'NoneType' object has no attribute 'connected'

I’m afraid I cannot provide more useful data to reproduce the problem as it appears to be raised randomly.

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 19

Links to this issue

signalrcore-deng · PyPI

Commits related to this issue

Fix for errors that occur when closing websocket https://github.com/websocket-client/websocket-client/issues/449 — committed to olie304/websocket-client by olie304 5 years ago
use latest websocket-client version reason: to fix the following issue https://github.com/websocket-client/websocket-client/issues/449 https://github.com/websocket-client/websocket-client/pull/586 — committed to wazo-platform/wazo-acceptance by fblackburn1 5 years ago
use latest websocket-client version reason: to fix the following issue https://github.com/websocket-client/websocket-client/issues/449 https://github.com/websocket-client/websocket-client/pull/586 — committed to wazo-platform/wazo-acceptance by fblackburn1 5 years ago
Fix clean exit from cli See https://github.com/websocket-client/websocket-client/issues/449 Closes: #594 — committed to bitphage/DEXBot by bitphage 4 years ago

Most upvoted comments

I have the same problem when I close socket.

    def on_message(ws: WebSocketApp, message):
        print(message)
        ws.close()

    def on_error(ws, error):
        print(error)

It triggers on_error: ‘NoneType’ object has no attribute ‘connected’

max-block on Jan 5, 2019