How to configure nginx for websockets using Integrated Passenger (not standalone)

[James Whitmarsh]

There are a lot of answers in the group (and after a thorough google search) about getting websockets running in standalone mode, using proxy passing, but how do we do it with integrated mode? 

This is my nginx config:

   server {
        listen      80;
        server_name servername.com

        # static files
        root /var/www/product/demo/current/dist;
        index index.html;


        location / {
            try_files $uri $uri/ /index.html =404;
        }

        # express api
        location /api {
            root /var/www/product/demo/current;
            passenger_enabled on;
            passenger_app_type node;
            passenger_app_root /var/www/product/demo/current;
            passenger_startup_file dist/index.js;
            passenger_app_env demo;

            passenger_sticky_sessions on;
        }
    }

As you can see, we're hosting the static files with just nginx, and then using Passenger on our /api location. 

Please let me know if you need any more info!

Thanks,

James

[Daniel Knoppel]

Have a look at this: https://www.phusionpassenger.com/library/config/nginx/tuning_sse_and_websockets/

- Daniel

[James Whitmarsh]

Thanks for the reply Daniel, but that documentation is for Ruby apps, this is a node app - as far as I can tell that documentation doesn't apply. 

All the nginx documentation (and some of your own) suggests using proxy_pass to get websockets working, but since I don't know what port the app is running on (because of integrated passenger) I can't use that. Am I missing something here? 

[Hongli Lai]

When using the Nginx integration mode you don't have to do anything.
Websockets work out of the box there.

The 'passenger_enabled on' directive is equivalent to what
'proxy_pass' would have done in a reverse proxy setting:
'passenger_enabled on' sets up an internal reverse proxy connection
and automatically configures that with WebSocket support.

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