I have two apps running on the same server

• w.x.y.z:2203
• w.x.y.z:2213

And a proxy server running on this:

• a.b.c.d

And I have an nginx config that's proxying the 2 set up like below:

        location / {
            proxy_pass https://w.x.y.z:2203/;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Host $host;
            proxy_cache            static;
        }

        location /test-dev/ {
            proxy_pass https:/w.x.y.z:2213/;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_cache            static;
        }

But nothing. If I go to a.b.c.d I get redirected to w.x.y.z:2203 without issues. Obviously it shows up as w.x.y.z:2203/, but it still works without fail.

If I go to a.b.c.d/test-dev/ then all I get is a white screen. I do not go to w.x.y.z:2213.

I have confirmed that w.x.y.z:2213 is up, and can get to the app from the server itself. My computer can curl w.x.y.z:2213 and get a response back. And the server can curl w.x.y.z:2213, and ping w.x.y.z without fail.

So the Proxy can get a response from the w.x.y.z app on both ports. But one of the ports is a white screen. What gives?

The apps are tomcat apps if that helps. But I'm stuck.