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THE JOATMON
Asked: 2019-03-04 08:35:30 +0800 CST

NGinx reverse proxy for websocket connections

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I have a console app that runs on a few machines. I can access it using a websocket client by entering the URL ws://192.168.1.152/h264/. I need to be able to establish connections to these machines externally. I have tried many options in Nginx. I would like to be able to connect to ws://streams.mydomain.com/101 and have it go to the IP above. Here is a table of examples.

ws://streams.mydomain.com/152/ > ws://192.168.1.152

ws://streams.mydomain.com/153/ > ws://192.168.1.153

ws://streams.mydomain.com/154/ > ws://192.168.1.154

I have tried various options including the following:

Method 1

http {
    server {
        listen      *;
        server_name streams.mydomain.com;
        location /101/ {
            proxy_pass $scheme://192.168.1.52;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
        }
    }
}

This method results in "Invalid response" (gets a 301 and expects a 101)

Method 2

http {
    server {
        listen      *;
        server_name streams.mydomain.com;
        location /101/ {
            add_header  'Connection'    'Upgrade';
            add_header  'Upgrade'       websocket;
            return      101             $scheme://192.168.1.52;
        }
    }
}

This results in "Missing upgrade header".

Other methods

I also tried using the stream directive with no luck as well as rewrite under HTTP, also with varying success.

I posted a question about the second method specifically, but I'm hoping that this question will open up answers for methods I haven't been able to find.

Here is a pastebin of the FULL config: https://pastebin.com/1H49n5LB

nginx

0 Answers