Friday, June 21, 2024
AngularAngular 17Socket.IO

Creating a chat application using Angular 17 and Socket.IO

Creating a chat application using Angular 17 and Socket.IO

Creating a chat application using Angular 17 and Socket.IO involves several steps, including setting up an Angular project, integrating Socket.IO, and building the frontend and backend for real-time communication. Here’s a simplified outline to guide you through the process:

1. Set Up Angular Project

First, you need to set up your Angular project. Assuming you have Node.js and npm installed, you can use the Angular CLI.

npm install -g @angular/cli
ng new chat-app
cd chat-app

2. Install Socket.IO

You’ll need to install Socket.IO for both the client (Angular) and server (Node.js).

  • For the Angular client:
  npm install
  • For the Node.js server:
  npm install express

3. Create the Node.js Server

Create a simple Express server with Socket.IO integrated.

  • Create a new file for your server, e.g., server.js.
  • Set up the server:
  const express = require('express');
  const http = require('http');
  const socketIo = require('');

  const app = express();
  const server = http.createServer(app);
  const io = socketIo(server);

  io.on('connection', (socket) => {
    console.log('New client connected');

    socket.on('disconnect', () => {
      console.log('Client disconnected');

    socket.on('message', (message) => {
      io.emit('message', message);

  server.listen(3000, () => {
    console.log('Listening on port 3000');

4. Set Up the Angular Service for Socket.IO

Create a service in Angular to handle Socket.IO communications.

  • Generate a new service:
  ng generate service chat
  • In your chat.service.ts, set up methods to connect to the server, send messages, and listen for incoming messages.
  import { Injectable } from '@angular/core';
  import * as io from '';
  import { Observable } from 'rxjs';

    providedIn: 'root'
  export class ChatService {
    private socket = io('http://localhost:3000');

    sendMessage(message: string): void {
      this.socket.emit('message', message);

    getMessages(): Observable<string> {
      return new Observable((observer) => {
        this.socket.on('message', (message) => {

5. Build the Chat Interface

Create the chat components in Angular.

  • Generate a new component:
  ng generate component chat
  • Implement the chat interface in chat.component.html and use the ChatService to send and receive messages in chat.component.ts.

6. Run the Application

  • Start the Node.js server:
  node server.js
  • Serve the Angular application:
  ng serve

7. Test the Application

Open the application in multiple browsers or tabs and test the real-time chat functionality.

Additional Tips

  • Ensure CORS issues are handled if your client and server are on different domains.
  • Implement additional features like user authentication, typing indicators, and message history.

This outline provides a basic framework. You might need to adjust the code and configurations based on your specific requirements and Angular version nuances.

the authortherichpost
Hello to all. Welcome to Myself Ajay Malhotra and I am freelance full stack developer. I love coding. I know WordPress, Core php, Angularjs, Angular 14, Angular 15, Angular 16, Angular 17, Bootstrap 5, Nodejs, Laravel, Codeigniter, Shopify, Squarespace, jQuery, Google Map Api, Vuejs, Reactjs, Big commerce etc.


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