Unlock the Power of WebSocket Communication with ws-ping The Ultimate Guide for SEO Enthusiasts

Introduction to ws-ping

WebSocket communication has revolutionized real-time data transfer, and ws-ping is a lightweight yet powerful library that simplifies working with WebSockets. In this guide, we’ll introduce you to ws-ping and provide dozens of useful API explanations along with code snippets. Whether you’re building a chat application, a real-time data dashboard, or a multiplayer online game, ws-pping has got you covered.

Initial Setup

Installing ws-ping is straightforward. You can install it via npm:

  npm install ws-ping

Creating a WebSocket Server

Let’s start by creating a basic WebSocket server using ws-ping:

  const WebSocket = require('ws-ping');

  const server = new WebSocket.Server({ port: 8080 });

  server.on('connection', (ws) => {
    console.log('New client connected');
    ws.on('message', (message) => {
      console.log(`Received: ${message}`);
      ws.send('Pong');
    });

    ws.send('Welcome to ws-ping server');
  });

  console.log('WebSocket server is running on ws://localhost:8080');

Creating a WebSocket Client

Next, let’s create a simple WebSocket client to connect to our server:

  const WebSocket = require('ws-ping');

  const ws = new WebSocket('ws://localhost:8080');

  ws.on('open', () => {
    console.log('Connected to server');
    ws.send('Ping');
  });

  ws.on('message', (message) => {
    console.log(`Received: ${message}`);
  });

Handling Disconnections

Handling client disconnections is crucial for maintaining a stable WebSocket connection:

  server.on('close', () => {
    console.log('Client disconnected');
  });

  ws.on('close', () => {
    console.log('Disconnected from server');
  });

Broadcasting Messages

Broadcasting messages to all connected clients can be done easily:

  server.broadcast = (data) => {
    server.clients.forEach((client) => {
      if (client.readyState === WebSocket.OPEN) {
        client.send(data);
      }
    });
  };

  server.on('connection', (ws) => {
    ws.on('message', (message) => {
      server.broadcast(message);
    });
  });

Authentication

Implementing basic authentication for your WebSocket server:

  server.on('connection', (ws, req) => {
    const token = req.url.split('?')[1];
    if (isValidToken(token)) {
      ws.send('Authentication successful');
    } else {
      ws.close(4001, 'Invalid Token');
    }
  });

  function isValidToken(token) {
    // Your token validation logic here
    return token === 'secret-token';
  }

Example Application: Real-Time Chat

Combining all of the above, let’s create a simple real-time chat application:

Server side:

  const WebSocket = require('ws-ping');

  const server = new WebSocket.Server({ port: 8080 });

  server.broadcast = (data) => {
    server.clients.forEach((client) => {
      if (client.readyState === WebSocket.OPEN) {
        client.send(data);
      }
    });
  };

  server.on('connection', (ws) => {
    ws.on('message', (message) => {
      server.broadcast(message);
    });
  });

  console.log('Chat server is running on ws://localhost:8080');

Client side:

  const WebSocket = require('ws-ping');

  const ws = new WebSocket('ws://localhost:8080');

  ws.on('open', () => {
    console.log('Connected to chat server');
  });

  ws.on('message', (message) => {
    console.log(`Message received: ${message}`);
  });

  process.stdin.on('data', (data) => {
    ws.send(data.toString().trim());
  });

With this setup, you have a fully functional real-time chat application using ws-ping. Feel free to extend this base to create more sophisticated applications!

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