Websockets failing without error message

Michael

10/7/23, 3:29 AM

I have a NginX server running two nodeJs applications, Let's call them A and B.

Both applications are working correctly for websockets on my local machine, and https calls are working on the server for both applications, but websockets are only working for the application in the root location "/".

Below is my Nginx Config

        location /applicationB/ {
             proxy_pass http://localhost:8001;
             proxy_http_version 1.1;
             proxy_set_header Upgrade $http_upgrade;
             proxy_set_header Connection 'upgrade';
             proxy_set_header Host $host;
             proxy_cache_bypass $http_upgrade;

             proxy_set_header X-Real-IP $remote_addr;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
             set_real_ip_from 127.0.0.1;
             real_ip_header X-Forwarded-For;
             real_ip_recursive on;
        }

        location / {
             proxy_pass http://localhost:8000;
             proxy_http_version 1.1;
             proxy_set_header Upgrade $http_upgrade;
             proxy_set_header Connection 'upgrade';
             proxy_set_header host $http_host;
             proxy_cache_bypass $http_upgrade;
             proxy_set_header X-Real-IP $remote_addr;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
             set_real_ip_from 127.0.0.1;
             real_ip_header X-Forwarded-For;
             real_ip_recursive on;
        }

I believe this must be a configuration issue rather than an issue with the application because if I update both locations to point to the same application the websockets will succeed for the root location but still fail for the "applicationB" location.

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nginx

node.js

websocket

nginx-reverse-proxy

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Websockets failing without error message

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