Socket.io
one minute of reading
Socket.io is a JavaScript library that allows you to create apps with instant callbacks between the browser and the server. It is a tool that allows you to create dynamic web apps such as chat rooms, games, real-time data display applications.
When we want to build such an app as a text messenger, we need a tool that will handle real-time communication with the server. In this article I will describe just the tool that will help us do this.
What is Socket.IO?
Socket.IO was created in 2010 by Guillermo Rauch. Socket.IO is a JavaScript library that allows real-time communication with the server. Socket.IO allows two-way communication between the client and the server. To establish a connection and exchange data between the client and server, Socket.IO uses Engine.IO, which is a lower-level library than Socket.IO. Engine.IO is used to implement the server, and Engine.IO-client is used for the clients.
Capabilities of Socket.IO
Socket.IO provides the ability to implement real-time analysis, binary streaming, instant message sending and receiving. Socket.IO establishes connections even in the presence when the user is using proxy, system firewall and antivirus software. By default, it also supports automatic reconnection, as well as detects the disconnection of the client from the server and also the other way around, the server is informed if the client is disconnected. Using this library, the developer does not need to know how to use the WebSocket protocol to use Socket.IO.
Using Socket.IO in practice
The following example connects Socket.IO to an HTTP server listening on port 3000.
const server = require('http').createServer();
const io = require('socket.io')(server);
io.on('connection', client => {
client.on('event', data => { /* … */ });
client.on('disconnect', () => { /* … */ });
});
server.listen(3000);
The connection using Express JS.
const app = require('express')();
const server = require('http').createServer(app);
const io = require('socket.io')(server);
io.on('connection', () => { /* … */ });
server.listen(3000);
Related articles
Why Tailwind UI is a Must-Know for Modern Web Developers?
26 Oct 2023
In the realm of modern web development, the need for efficient tools is increasingly exigent. Harnessing the power of such an asset, Tailwind UI is emerging as a comprehensive solution. Streamlining the development process, it allows to make compelling web interfaces with ease. This write-up aims to explore the quintessence of Tailwind UI in today's digital age.

Understanding SOAP: Key Concepts and Practical Applications
16 Aug 2023
Understanding SOAP (Simple Object Access Protocol) can often prove daunting. This article seeks to demystify SOAP, exploring its core principles and its practical applications. By dissecting its structure and peeling back its layers, we can unravel its true potential and learn how to harness its capabilities in an efficient manner.
Influence of Google Fonts on UX and UI Design
3 Aug 2023
In the fusion of UX and UI design, nothing is trivial. Each element, including typography, plays a pivotal role in engaging user interaction. This article focuses on understanding the crucial influence of Google Fonts on UX & UI design. We delve into its impact on aesthetics, functionality, and overall user experience.
Human-Centered Design: Pivotal Player in the Arena of Modern Technology Development
17 Jul 2023
Human-Centered Design, a novel paradigm in modern technology development, is ensuring a revolution in software designs by prioritizing the user experience. As a core approach to problem-solving, it carefully blends technology with human needs to deliver highly-effective and usable solutions.
Unleashing the Power: A Comprehensive Guide to Mastering Affiliate Marketing
17 Jul 2023
This guide will embark you on a journey through the realm of Affiliate Marketing, illuminating its potency and progressive ways to harness it. Step into the universe where partnerships flourish, revenues stream, and brands expand, using dynamic marketing strategies.
Mastering the Art: Effective Strategies for Lead Nurturing in Tech Industries
17 Jul 2023
Lead nurturing in the tech industry is akin to conducting a symphony, where every note must be played in perfect harmony. It requires patience, precision, and a keen sense of timing. This article gears towards deciphering strategies that can help tech businesses skilfully navigate this intricate realm, fostering stronger customer connections and maximizing lead conversion.
Unleashing the Potential of CKEditor for Seamless Content Creation
5 Jul 2023
In this article, we will explore how to unleash the full potential of CKEditor for seamless content creation. CKEditor is a powerful and versatile text editor that offers a wide range of features and customization options. By understanding its capabilities and implementing best practices, we can optimize content creation processes and enhance the overall user experience. Let's dive in and discover the possibilities that CKEditor brings to the table!
Show all articles