Phoenix WebSocket behind proxy

Phoenix Forum Questions / Help
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5

well it’s not as lean as it used to be :slight_smile: There is an extra copy pasted location to experiment with the socket route. I can also almost confirm that it’s an nginx problem - we got remote access to the client and could test it without nginx, at least with websocket.org echo test it works without proxy but it didn’t work with it, didn’t try it with the proper client app yet though.

So here is the config:

upstream phoenix {
  server 127.0.0.1:4000 max_fails=5 fail_timeout=60s;
}

server {
  server_name [ip here];
  listen 80;

  location /socket {
    allow all;

    client_max_body_size 50M;

    # a hack to enforce capitalized response header    
    #more_clear_headers 'Connection';
    #more_clear_headers 'connection';
    #more_set_input_headers 'Connection';
    #more_clear_input_headers 'Connection';
    #more_set_headers 'Connection: Upgrade';
    #add_header Connection "Upgrade" always;
    
    proxy_set_header Proxy "";

    proxy_http_version 1.1;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-Cluster-Client-Ip $remote_addr;

    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";

    # allow remote connections
    proxy_set_header Origin '';

    proxy_pass http://phoenix;
  }

  location / {
    allow all;

    client_max_body_size 50M;

    proxy_set_header Proxy "";

    proxy_http_version 1.1;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-Cluster-Client-Ip $remote_addr;

    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";

    # allow remote connections
    proxy_set_header Origin '';

    proxy_pass http://phoenix;
  }
}