I used to have this same problem with cookies way back in the day. If you had a number of windows that all needed to communciate with the streaming server, and

I used to have this same problem with cookies way back in the day. If you had a number of windows that all needed to communciate with the streaming server, and share a session, and you closed the master, one of the others would have to take over the connection. We used cookies in a similar way to local storage is used in this story. Ugly ugly code. These days of course, I'd want to use service workers.