How to do it...

Now that we have a very simple Express application, we'll place NGINX in front of it. Although Node.js is extremely fast, NGINX is not only faster but offers far more configurability. Even with WebSockets, we're still able to proxy this through NGINX. Let's take a look at the configuration:

server { 
    listen       80; 
    server_name  express.nginxcookbook.com; 
 
    access_log  /var/log/nginx/express-access.log  combined; 
 
    location / { 
         proxy_pass http://127.0.0.1:3000; 
         proxy_http_version 1.1; 
         proxy_set_header Upgrade $http_upgrade; 
         proxy_set_header Connection "upgrade"; 
    } 
}