nginx + python + websockets

Question

How can I configure nginx (latest version, they say it supports websockets) to support WebSockets.

And how can I use python to run websockets connection.

That what I want:

• client creates WebSocket with JavaScript;
• websocket server script runs on python;
• and nginx in backend of all of this.

Can any body help me?

Answer 1

I took a quick look at the relevant changeset to Nginx, and it looks like all you need to do to start handling websocket requests is to set up a proxy in your nginx config. So for example:

upstream pythonserver {
    server localhost:5000;
}

server {
    // normal server config stuff...

    location /some/uri/here {
        // Minimum required settings to proxy websocket connections
        proxy_pass http://pythonserver;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";

        // Other settings for this location
    }
}

This little configuration snippet will proxy incoming websocket traffic to your Python application server, assumed in the example to be listening for local connections on port 5000.

Hope this helps.