Run node js application without port

Question

I wants to run my application without assigning any port on my current IP address on port 80. How it will possible.

Answer 1

If your node.js application is a web server, you cannot remove the port. No port, no web server. Trying to make a web server without a port is like trying to make a locomotive with no railroad.

You can use the default port however. When users give browsers URLs without ports, they automatically apply the default port. For URLs like http://example.com/ or http://10.11.12.13/ the default port is 80. For https://example.com it's 443, and you need to use the https server class.

So, you can make your server listen on port 80.

In development you will run into a problem with this approach. On OSX, Linux, and other UNIX-derived OSs, only the privileged (root) user can run servers that use port numbers less than 1024. The typical development cycle of edit / run / test is a huge hassle, and a security hole, when you need privileges to run. That's why the node.js examples use port 3000.

In production, many people use nginx as a reverse proxy server to relay http requests from port 80 or https requests from port 443 to your node.js server at port 3000. You can read about how to do that; it's far beyond the scope of a Stack Overflow answer,