WebSocket connection to 'ws://localhost:9001/?' failed

[looeee]

I've set up the config exactly as described in the readme. I have tested multiple ports, including 443, 8000, 8080, 35729, 9001, 9999 on Firefox and Chrome. All give the same error:

livesync.js:11 WebSocket connection to 'ws://localhost:9001/?' failed: Error in connection establishment: net::ERR_CONNECTION_REFUSED

I'm using windows. Tracking down other people with this error, it seems like browsers have increased security restrictions to require a SSL cert for WebSocket connections. Is this correct? Does it mean there's no way to use this with normal Django runserver anymore?

EDIT: I have tried using django-sslserver to load the site on HTTPS but it makes no difference.

[jaroslaw-janikowski]

Same thing here

Error message:

Firefox can’t establish a connection to the server at ws://localhost:8001/?. 
livesync.js:11:22

My setup

Django==3.1.4
django-livesync==0.5
watchdog==1.0.2
websocket-client==0.57.0