Thanks for this. A few months ago I looked into getting gevent-socketio up and running to do real-time messaging between a Flask app and an iOS app. gevent-socketio provides event handling and a messaging protocol on top of websockets that I thought would be useful.

However, based on my testing, in its current state it's nowhere near ready for production. There are some serious bugs relating to memory leaks, improperly closing stale sockets, and deployment on Gunicorn with # workers > 1 is not currently possible. (And in practice I don't think you would want to deploy on anything besides Gunicorn.) The project also seems to be somewhat inactive, there are a lot of open critical issues and there hasn't been any real activity in the last 6 months or so.

At this point I am considering removing the library and using a straight websocket implementation with a simpler protocol instead.