Python Socket IO on Phusion Passenger?

sltworld

I was wondering, how do I make websocket/socketio work on passenger, I've heard of solutions like passenger "sticky_sessions" and "unlimited_concurrency_paths" but could never find a way to modify it.

Is there any way to make sockets work with python flask & passenger? Or is there any alternatives?
It keeps on giving "RuntimeError: Cannot obtain socket from WSGI environment." errors.
Thanks. Great service by the way.

admin

sltworld Passenger's demo for Node.js (using socket.io for Node.js) is known to be work, you can try to do something similar for Python.

https://github.com/phusion/passenger-nodejs-websocket-demo

sltworld

These solutions kind of indicate that the nginx configuration or something similar must be modified to enable websockets and sticky sessions, but where can I do such a thing?

admin

sltworld Duplicate. The same principle applies to Python and Node. https://forum.serv00.com/d/616-websocket-preferably-nodejs-not-working/2

xiaoyaos

sltworld Hi bro, Did you run it? How did it work? Help me

UnknownPro

@admin So after correct configuration of SocketIO for Python with Passenger WSGI works, but only with long polling fallback. When forced to use websocket mode, it doesn't work. As per the https://github.com/phusion/passenger-nodejs-websocket-demo demo, it uses sticky_sessions to let the long polling fallback work as it needs the sticky_sessions configuration. The demo doesn't get websocket working without fallback to long polling as it claims. Then how shall we proceed in order to get true websocket mode working?

admin

UnknownPro I don't see any issues with the demo. Please provide the URL where you are running the demo and specify exactly where you are encountering a problem in its functionality.