CentOS 7
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Nginx : Reverse Proxy Settings#2
2015/08/18
 
Configure Nginx for Reverse Proxy Settings which also forwards WebSocket.
[1] For exmaple, configure Nginx to set proxy on /chat for an application which works on port 1337 of backend server.
The sample application is from here (section [3]).
[root@www ~]#
vi /etc/nginx/nginx.conf
# change like follows in "server" section

    server {

        listen      80 default_server;
        listen      [::]:80 default_server;
        server_name www.srv.world;

        location /socket.io/ {
            proxy_pass http://node01.srv.world:1337/socket.io/;
            proxy_http_version 1.1;
            proxy_set_header   Upgrade $http_upgrade;
            proxy_set_header   Connection "upgrade";
        }

        location /chat {
            proxy_pass         http://node01.srv.world:1337/;
            proxy_http_version 1.1;
            proxy_set_header   Upgrade $http_upgrade;
            proxy_set_header   Connection "upgrade";
        }

        location / {
            proxy_pass http://node01.srv.world/;
        }

    }
[root@www ~]#
systemctl restart nginx

[2] If SELinux isenabled, allow port for application.
[root@www ~]#
semanage port -a -t http_port_t -p tcp 1337

[3] Access to the sample App to make sure it works normally on proxy environment.
 
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