For those people who want django and nodejs running over nginx.

nginx_inverse_proxy

  #Django Config
  
  server {
        server_name domain.com;
	
 
        access_log on;

        location / {
                proxy_pass http://127.0.0.1:8001;
                proxy_set_header X-Forwarded-Host $server_name;
                proxy_set_header X-Real-IP $remote_addr;
                add_header P3P 'CP="ALL DSP COR PSAa PSDa OUR NOR ONL UNI COM NAV"';
        }
    }


#Nodejs Config

server{

    server_name subdomain.domain.com;
    access_log /var/log/nginx/me.log;
    location / {


       	proxy_pass http://127.0.0.1:8002;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        
        #IMPORTANT 
        #Must allow access to this origin resource http://subdomain.domain.com;
        #if is not set , you will get CORS message and the websockets will be blocked
	      proxy_set_header Access-Control-Allow-Origin http://subdomain.domain.com;
	      proxy_set_header 'Access-Control-Allow-Headers' 'X-Requested-With,Accept,Content-Type, Origin';
        proxy_set_header X-NginX-Proxy true;


        proxy_redirect off;
    }
}