In Node, if we want to build our own custom HTTP request router then we can create it by handling the incoming requests and directing them to the specific endpoints. Using this routing process, allows us to define the different actions or responses that are based on the requested URLs. In this article, we will create our own node HTTP request router.

Prerequisites:

• Node JS
• Node HTTP Module

What is an HTTP Request Router?

An HTTP request router is a system or component within a web server or framework that analyzes incoming HTTP requests. It have a capability to match an endpoint with a defined set of routes in the program and forward them to the corresponding handler or controller.

Approach to create Node HTTP Request Router:

• In this example first we will create a folder name server.js or app.js.
• Then we require the ‘http’ module for that we do not need any npm installation because it is a node.js built-in module.
• After that we setup our node server using “createServer” method.
• Then we define our routes or end points using URL module.

Example : Below is the code example of how to creating Our own Node HTTP Request Router

const http = require('http');
const server = http.createServer((req, res) => {
    if (req.url === '/') {
        res.writeHead(200, { 'Content-Type': 'text/html' });
        res.end("Home page");
    }
    else if (req.url === '/about') {
        res.writeHead(200, { 'Content-Type': 'text/html' });
        res.end('About us page');
    } else {
        res.writeHead(404, { 'Content-Type': 'text/html' });
        res.end('<h1>404 Not Found</h1>');
    }
});

server.listen(3000, (err) => {
    if (err) {
        console.log(err);
    } else {
        console.log(`Server is started at port no 3000`);
    }
});

Output: