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This example demonstrates how to create a simple web application using WebSockets to establish real-time communication between a server and a client, allowing messages to be sent and received in real-time.
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| <!doctype html> | |
| <html> | |
| <head> | |
| <title>WebSocket Test</title> | |
| </head> | |
| <body> | |
| <div> | |
| <button id="button1">Button 1</button> | |
| <button id="button2">Button 2</button> | |
| </div> | |
| <script> | |
| var ws = new WebSocket('ws://localhost:8082/'); | |
| // Send message when button is clicked | |
| var button1 = document.getElementById('button1'); | |
| button1.onclick = function() { | |
| ws.send('Button 1 was clicked'); | |
| }; | |
| var button2 = document.getElementById('button2'); | |
| button2.onclick = function() { | |
| ws.send('Button 2 was clicked'); | |
| }; | |
| // Log messages from the server | |
| ws.onmessage = async function (event) { | |
| var text = await event.data.text() | |
| console.log(text); | |
| }; | |
| </script> | |
| </body> | |
| </html> |
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| { | |
| "name": "server", | |
| "version": "1.0.0", | |
| "description": "", | |
| "main": "server.js", | |
| "scripts": { | |
| "test": "echo \"Error: no test specified\" && exit 1", | |
| "start": "node server.js" | |
| }, | |
| "keywords": [], | |
| "author": "", | |
| "license": "ISC", | |
| "dependencies": { | |
| "ws": "^8.11.0" | |
| } | |
| } |
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| const WebSocket = require('ws'); | |
| const wss = new WebSocket.Server({ port: process.env.WEBSOCKET_PORT || 8082 }); | |
| wss.on('connection', function connection(ws) { | |
| ws.on('message', function incoming(message) { | |
| console.log('received: %s', message); | |
| // Broadcast to all clients | |
| wss.clients.forEach(function each(client) { | |
| if (client.readyState === WebSocket.OPEN) { | |
| client.send(message); | |
| } | |
| }); | |
| }); | |
| }); |
Author
IzzleNizzle
commented
Apr 25, 2023
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