HTTP Servers In Node.js

HTTP Servers in Node.js – onlinecode

In this post, we will give you information about HTTP Servers in Node.js – onlinecode. Here we will give you detail about HTTP Servers in Node.js – onlinecode And how to use it also give you a demo for it if it is necessary.

Node.js has a built in http.Server class. Here’s how you can start an HTTP server
that responds to every request with the string ‘Hello, World!’:

const http = require('http');

// You usually don't call 'new http.Server()', the 'http.createServer()'
// function creates a new 'Server' instance for you.
const server = http.createServer((req, res) => res.end('Hello, World!'));

server instanceof http.Server; // true
await server.listen(3000);

Node.js’ event loop based concurrency makes it easy to test HTTP servers.
For example, you can start a server and then make an HTTP request to that
server using the Axios HTTP library without any threads.

const http = require('http');

const server = http.createServer((req, res) => res.end('Hello, World!'));

server instanceof http.Server; // true
await server.listen(3000);

// Make an HTTP request to the server
const axios = require('axios');
const res = await axios.get('http://localhost:3000');
res.data; // 'Hello, World'

Versus Express

Most apps use an HTTP framework rather than using the http.Server class directly.
The http.createServer() function just takes a single function as a parameter, so,
if you use Node’s HTTP server directly, you’re responsible for implementing routing,
HTTP body parsing, etc. Frameworks like Express take care
of routing and body parsing, and provide patterns for organizing your code.

However, most frameworks use http.Server under the hood, and let you access
the raw Node.js HTTP server. For example, Express’ listen() function returns
an instance of the http.Server class:

const express = require('express');
const app = express();

const server = app.listen(3000);
server instanceof require('http').Server; // true

Node.js is an open-source, cross-platform JavaScript runtime environment. Node.js allows you to run JavaScript code outside of a web browser. This makes it possible to create a wide variety of applications, including web servers, real-time chat applications, and data processing pipelines.

Node.js is built on top of the V8 JavaScript engine, which is also used by Google Chrome. This means that Node.js applications can take advantage of the same performance and features as Chrome.