WebSockets offer a persistent connection between client and server that enables real-time communication. They provide a standardized way of sending data from the server to the client and vice versa. Unlike HTTP , they do not require the client to repeatedly request data from the server.
What are WebSockets?
It allows real-time, two-way communication between a web browser and a server, enabling the server to send data to the browser without requesting it explicitly.
What are the uses?
WebSockets are a communication protocol that provides full-duplex, bidirectional communication channels over a single, long-lived connection between a client (usually a web browser) and a server. Unlike traditional HTTP requests that are request-response based and stateless, Web Sockets allow ongoing, real-time communication between the client and server. Here are some common use cases for Web Sockets:
Real-Time Web Applications
Live Data Streaming
IoT (Internet of Things)
Online Auctions and Bidding
Customer Support and Help Desks
Live Dashboards and Monitoring
Voice and Video Calls:
How do they work?
In a nutshell, working with WebSockets involves three main steps:
Opening a WebSocket connection. The process of establishing a WebSocket connection is known as the opening handshake, and consists of an HTTP request/response exchange between the client and the server.
Data transmission over WebSockets. After a successful WebSocket handshake, the client and server can exchange messages (frames) over a persistent WebSocket connection. WebSocket messages may contain string (plain text) or binary data.
Closing a Web Socket connection. Once the persistent WebSocket connection has served its purpose, it can be terminated; both the client and the server can initiate the closing handshake by sending a close message.
Advantages of WebSockets
Real-time data transfer
Efficient use of resources
Set up your project environment
Setup the project
Create a new directory for your project and navigate to it:
Initialize the Node.js Project
Initialize a package.json file for your project:
Install the required dependencies for the server using:
npm install express ws
Create Server Code
Create a server.js file and open it in your preferred text editor:
Add the following code to set up an Express server and WebSocket integration:
console.log('Server is listening on port 3000');
5. Create HTML User Interface:
Create an index.html file and open it in your preferred text editor:
7. Access the User InterfaceOpen a web browser and navigate to http://localhost:3000. You should see the simple UI with an input box and a “Send” button. Messages sent from the UI will be echoed back by the server and displayed on the page.
Get a Fast Estimate on Your Software Development Project
We are committed to delivering high-quality IT solutions tailored to meet the unique needs of our clients. As part of our commitment to transparency and excellence, we provide detailed project estimations to help our clients understand the scope, timeline, and budget associated with their IT initiatives.