Fork from:

https://github.com/rinatr1/websocket_sniff

For staring:

1. npm install
2. npm run build
3. Start Firefox, go on about:debugging, add folder dist as Temporary Extensions (more Your first extension)

Issues:

• There is no checking for host, tab shows all messages from all websocket connections
• If you open tab on one site, and switch on another code for listening websocket will be added on the site.