How to get the Request Host in express.js?

This post will show you how to get a request Host in express.js.

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1- What is Request Host?

The Request Host header specifies the host and port number of the server to which the request is being sent.

Host header includes two parts: scheme host and port :

 Host: <host>:<port>

<host>

host: is the domain name of the server.

port: The port is optional and contains the TCP port number on which the server is listening. When no port is included, the default port is 443 for an HTTPS URL, and 80 for an HTTP URL).

Example:

  Host: hostExample.com

2- Get the request Host from HOST header

To get the Request Host from the headers in expess.js, add the following lines of code to the request:

   app.use((req, res, next) => {

      const host = req.header('Host');

  });

 

OR you can use:

   
   app.use((req, res, next) => {
    
       const host = req.headers.host;

 });

 

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