├── .gitignore ├── README.md ├── backend ├── app.js ├── package.json └── yarn.lock └── frontend ├── .gitignore ├── package.json ├── public ├── favicon.ico ├── index.html └── manifest.json ├── src ├── App.css ├── App.js ├── App.test.js ├── Chat.js ├── ChatInput.js ├── ChatMessage.js ├── index.css ├── index.js ├── logo.svg └── registerServiceWorker.js └── yarn.lock /.gitignore: -------------------------------------------------------------------------------- 1 | # Created by .ignore support plugin (hsz.mobi) 2 | ### Node template 3 | # Logs 4 | logs 5 | *.log 6 | npm-debug.log* 7 | yarn-debug.log* 8 | yarn-error.log* 9 | 10 | # Runtime data 11 | pids 12 | *.pid 13 | *.seed 14 | *.pid.lock 15 | 16 | # Directory for instrumented libs generated by jscoverage/JSCover 17 | lib-cov 18 | 19 | # Coverage directory used by tools like istanbul 20 | coverage 21 | 22 | # nyc test coverage 23 | .nyc_output 24 | 25 | # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files) 26 | .grunt 27 | 28 | # Bower dependency directory (https://bower.io/) 29 | bower_components 30 | 31 | # node-waf configuration 32 | .lock-wscript 33 | 34 | # Compiled binary addons (https://nodejs.org/api/addons.html) 35 | build/Release 36 | 37 | # Dependency directories 38 | node_modules/ 39 | jspm_packages/ 40 | 41 | # TypeScript v1 declaration files 42 | typings/ 43 | 44 | # Optional npm cache directory 45 | .npm 46 | 47 | # Optional eslint cache 48 | .eslintcache 49 | 50 | # Optional REPL history 51 | .node_repl_history 52 | 53 | # Output of 'npm pack' 54 | *.tgz 55 | 56 | # Yarn Integrity file 57 | .yarn-integrity 58 | 59 | # dotenv environment variables file 60 | .env 61 | 62 | # parcel-bundler cache (https://parceljs.org/) 63 | .cache 64 | 65 | # next.js build output 66 | .next 67 | 68 | # nuxt.js build output 69 | .nuxt 70 | 71 | # vuepress build output 72 | .vuepress/dist 73 | 74 | # Serverless directories 75 | .serverless 76 | 77 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # A Simple Chat App With React, Node and WebSockets 2 | 3 | Check out the blog post related to this repo here: 4 | 5 | https://blog.bitlabstudio.com/a-simple-chat-app-with-react-node-and-websocket-35d3c9835807 6 | -------------------------------------------------------------------------------- /backend/app.js: -------------------------------------------------------------------------------- 1 | const WebSocket = require('ws'); 2 | 3 | const wss = new WebSocket.Server({ port: 3030 }); 4 | 5 | wss.on('connection', function connection(ws) { 6 | ws.on('message', function incoming(data) { 7 | wss.clients.forEach(function each(client) { 8 | if (client !== ws && client.readyState === WebSocket.OPEN) { 9 | client.send(data); 10 | } 11 | }); 12 | }); 13 | }); -------------------------------------------------------------------------------- /backend/package.json: -------------------------------------------------------------------------------- 1 | { 2 | "scripts": { 3 | "start": "node app.js" 4 | }, 5 | "dependencies": { 6 | "ws": "^6.0.0" 7 | } 8 | } 9 | -------------------------------------------------------------------------------- /backend/yarn.lock: -------------------------------------------------------------------------------- 1 | # THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY. 2 | # yarn lockfile v1 3 | 4 | 5 | async-limiter@~1.0.0: 6 | version "1.0.0" 7 | resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8" 8 | 9 | ws@^6.0.0: 10 | version "6.0.0" 11 | resolved "https://registry.yarnpkg.com/ws/-/ws-6.0.0.tgz#eaa494aded00ac4289d455bac8d84c7c651cef35" 12 | dependencies: 13 | async-limiter "~1.0.0" 14 | -------------------------------------------------------------------------------- /frontend/.gitignore: -------------------------------------------------------------------------------- 1 | # See https://help.github.com/ignore-files/ for more about ignoring files. 2 | 3 | # dependencies 4 | /node_modules 5 | 6 | # testing 7 | /coverage 8 | 9 | # production 10 | /build 11 | 12 | # misc 13 | .DS_Store 14 | .env.local 15 | .env.development.local 16 | .env.test.local 17 | .env.production.local 18 | 19 | npm-debug.log* 20 | yarn-debug.log* 21 | yarn-error.log* 22 | -------------------------------------------------------------------------------- /frontend/package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "frontend", 3 | "version": "0.1.0", 4 | "private": true, 5 | "dependencies": { 6 | "prop-types": "^15.6.2", 7 | "react": "^16.5.0", 8 | "react-dom": "^16.5.0", 9 | "react-scripts": "1.1.5" 10 | }, 11 | "scripts": { 12 | "start": "react-scripts start", 13 | "build": "react-scripts build", 14 | "test": "react-scripts test --env=jsdom", 15 | "eject": "react-scripts eject" 16 | } 17 | } 18 | -------------------------------------------------------------------------------- /frontend/public/favicon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/bitlabstudio/blogpost-react-websocket-chat/b8044a5c638c37bf99ccb687b5d995f0d046f93e/frontend/public/favicon.ico -------------------------------------------------------------------------------- /frontend/public/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 11 | 12 | 13 | 22 | React App 23 | 24 | 25 | 28 |
29 | 39 | 40 | 41 | -------------------------------------------------------------------------------- /frontend/public/manifest.json: -------------------------------------------------------------------------------- 1 | { 2 | "short_name": "React App", 3 | "name": "Create React App Sample", 4 | "icons": [ 5 | { 6 | "src": "favicon.ico", 7 | "sizes": "64x64 32x32 24x24 16x16", 8 | "type": "image/x-icon" 9 | } 10 | ], 11 | "start_url": "./index.html", 12 | "display": "standalone", 13 | "theme_color": "#000000", 14 | "background_color": "#ffffff" 15 | } 16 | -------------------------------------------------------------------------------- /frontend/src/App.css: -------------------------------------------------------------------------------- 1 | .App { 2 | text-align: center; 3 | } 4 | 5 | .App-logo { 6 | animation: App-logo-spin infinite 20s linear; 7 | height: 80px; 8 | } 9 | 10 | .App-header { 11 | background-color: #222; 12 | height: 150px; 13 | padding: 20px; 14 | color: white; 15 | } 16 | 17 | .App-title { 18 | font-size: 1.5em; 19 | } 20 | 21 | .App-intro { 22 | font-size: large; 23 | } 24 | 25 | @keyframes App-logo-spin { 26 | from { transform: rotate(0deg); } 27 | to { transform: rotate(360deg); } 28 | } 29 | -------------------------------------------------------------------------------- /frontend/src/App.js: -------------------------------------------------------------------------------- 1 | import React, { Component } from 'react' 2 | import logo from './logo.svg' 3 | import './App.css' 4 | import Chat from './Chat' 5 | 6 | class App extends Component { 7 | render() { 8 | return ( 9 |
10 |
11 | logo 12 |

Welcome to React

13 |
14 | 15 |
16 | ) 17 | } 18 | } 19 | 20 | export default App 21 | -------------------------------------------------------------------------------- /frontend/src/App.test.js: -------------------------------------------------------------------------------- 1 | import React from 'react'; 2 | import ReactDOM from 'react-dom'; 3 | import App from './App'; 4 | 5 | it('renders without crashing', () => { 6 | const div = document.createElement('div'); 7 | ReactDOM.render(, div); 8 | ReactDOM.unmountComponentAtNode(div); 9 | }); 10 | -------------------------------------------------------------------------------- /frontend/src/Chat.js: -------------------------------------------------------------------------------- 1 | import React, { Component } from 'react' 2 | import ChatInput from './ChatInput' 3 | import ChatMessage from './ChatMessage' 4 | 5 | const URL = 'ws://localhost:3030' 6 | 7 | class Chat extends Component { 8 | state = { 9 | name: 'Bob', 10 | messages: [], 11 | } 12 | 13 | ws = new WebSocket(URL) 14 | 15 | componentDidMount() { 16 | this.ws.onopen = () => { 17 | // on connecting, do nothing but log it to the console 18 | console.log('connected') 19 | } 20 | 21 | this.ws.onmessage = evt => { 22 | // on receiving a message, add it to the list of messages 23 | const message = JSON.parse(evt.data) 24 | this.addMessage(message) 25 | } 26 | 27 | this.ws.onclose = () => { 28 | console.log('disconnected') 29 | // automatically try to reconnect on connection loss 30 | this.setState({ 31 | ws: new WebSocket(URL), 32 | }) 33 | } 34 | } 35 | 36 | addMessage = message => 37 | this.setState(state => ({ messages: [message, ...state.messages] })) 38 | 39 | submitMessage = messageString => { 40 | // on submitting the ChatInput form, send the message, add it to the list and reset the input 41 | const message = { name: this.state.name, message: messageString } 42 | this.ws.send(JSON.stringify(message)) 43 | this.addMessage(message) 44 | } 45 | 46 | render() { 47 | return ( 48 |
49 | 59 | this.submitMessage(messageString)} 62 | /> 63 | {this.state.messages.map((message, index) => 64 | , 69 | )} 70 |
71 | ) 72 | } 73 | } 74 | 75 | export default Chat 76 | -------------------------------------------------------------------------------- /frontend/src/ChatInput.js: -------------------------------------------------------------------------------- 1 | import React, { Component } from 'react' 2 | import PropTypes from 'prop-types' 3 | 4 | class ChatInput extends Component { 5 | static propTypes = { 6 | onSubmitMessage: PropTypes.func.isRequired, 7 | } 8 | state = { 9 | message: '', 10 | } 11 | 12 | render() { 13 | return ( 14 |
{ 17 | e.preventDefault() 18 | this.props.onSubmitMessage(this.state.message) 19 | this.setState({ message: '' }) 20 | }} 21 | > 22 | this.setState({ message: e.target.value })} 27 | /> 28 | 29 |
30 | ) 31 | } 32 | } 33 | 34 | export default ChatInput 35 | -------------------------------------------------------------------------------- /frontend/src/ChatMessage.js: -------------------------------------------------------------------------------- 1 | import React from 'react' 2 | 3 | export default ({ name, message }) => 4 |

5 | {name} {message} 6 |

7 | -------------------------------------------------------------------------------- /frontend/src/index.css: -------------------------------------------------------------------------------- 1 | body { 2 | margin: 0; 3 | padding: 0; 4 | font-family: sans-serif; 5 | } 6 | -------------------------------------------------------------------------------- /frontend/src/index.js: -------------------------------------------------------------------------------- 1 | import React from 'react'; 2 | import ReactDOM from 'react-dom'; 3 | import './index.css'; 4 | import App from './App'; 5 | import registerServiceWorker from './registerServiceWorker'; 6 | 7 | ReactDOM.render(, document.getElementById('root')); 8 | registerServiceWorker(); 9 | -------------------------------------------------------------------------------- /frontend/src/logo.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /frontend/src/registerServiceWorker.js: -------------------------------------------------------------------------------- 1 | // In production, we register a service worker to serve assets from local cache. 2 | 3 | // This lets the app load faster on subsequent visits in production, and gives 4 | // it offline capabilities. However, it also means that developers (and users) 5 | // will only see deployed updates on the "N+1" visit to a page, since previously 6 | // cached resources are updated in the background. 7 | 8 | // To learn more about the benefits of this model, read https://goo.gl/KwvDNy. 9 | // This link also includes instructions on opting out of this behavior. 10 | 11 | const isLocalhost = Boolean( 12 | window.location.hostname === 'localhost' || 13 | // [::1] is the IPv6 localhost address. 14 | window.location.hostname === '[::1]' || 15 | // 127.0.0.1/8 is considered localhost for IPv4. 16 | window.location.hostname.match( 17 | /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/ 18 | ) 19 | ); 20 | 21 | export default function register() { 22 | if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) { 23 | // The URL constructor is available in all browsers that support SW. 24 | const publicUrl = new URL(process.env.PUBLIC_URL, window.location); 25 | if (publicUrl.origin !== window.location.origin) { 26 | // Our service worker won't work if PUBLIC_URL is on a different origin 27 | // from what our page is served on. This might happen if a CDN is used to 28 | // serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374 29 | return; 30 | } 31 | 32 | window.addEventListener('load', () => { 33 | const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`; 34 | 35 | if (isLocalhost) { 36 | // This is running on localhost. Lets check if a service worker still exists or not. 37 | checkValidServiceWorker(swUrl); 38 | 39 | // Add some additional logging to localhost, pointing developers to the 40 | // service worker/PWA documentation. 41 | navigator.serviceWorker.ready.then(() => { 42 | console.log( 43 | 'This web app is being served cache-first by a service ' + 44 | 'worker. To learn more, visit https://goo.gl/SC7cgQ' 45 | ); 46 | }); 47 | } else { 48 | // Is not local host. Just register service worker 49 | registerValidSW(swUrl); 50 | } 51 | }); 52 | } 53 | } 54 | 55 | function registerValidSW(swUrl) { 56 | navigator.serviceWorker 57 | .register(swUrl) 58 | .then(registration => { 59 | registration.onupdatefound = () => { 60 | const installingWorker = registration.installing; 61 | installingWorker.onstatechange = () => { 62 | if (installingWorker.state === 'installed') { 63 | if (navigator.serviceWorker.controller) { 64 | // At this point, the old content will have been purged and 65 | // the fresh content will have been added to the cache. 66 | // It's the perfect time to display a "New content is 67 | // available; please refresh." message in your web app. 68 | console.log('New content is available; please refresh.'); 69 | } else { 70 | // At this point, everything has been precached. 71 | // It's the perfect time to display a 72 | // "Content is cached for offline use." message. 73 | console.log('Content is cached for offline use.'); 74 | } 75 | } 76 | }; 77 | }; 78 | }) 79 | .catch(error => { 80 | console.error('Error during service worker registration:', error); 81 | }); 82 | } 83 | 84 | function checkValidServiceWorker(swUrl) { 85 | // Check if the service worker can be found. If it can't reload the page. 86 | fetch(swUrl) 87 | .then(response => { 88 | // Ensure service worker exists, and that we really are getting a JS file. 89 | if ( 90 | response.status === 404 || 91 | response.headers.get('content-type').indexOf('javascript') === -1 92 | ) { 93 | // No service worker found. Probably a different app. Reload the page. 94 | navigator.serviceWorker.ready.then(registration => { 95 | registration.unregister().then(() => { 96 | window.location.reload(); 97 | }); 98 | }); 99 | } else { 100 | // Service worker found. Proceed as normal. 101 | registerValidSW(swUrl); 102 | } 103 | }) 104 | .catch(() => { 105 | console.log( 106 | 'No internet connection found. App is running in offline mode.' 107 | ); 108 | }); 109 | } 110 | 111 | export function unregister() { 112 | if ('serviceWorker' in navigator) { 113 | navigator.serviceWorker.ready.then(registration => { 114 | registration.unregister(); 115 | }); 116 | } 117 | } 118 | --------------------------------------------------------------------------------