thameera/Socketio-jwt example

## index.html
<!DOCTYPE html>
<html>
  <head>
    <title>Socket.IO chat</title>
    <style>
      body { margin: 0; padding-bottom: 3rem; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }

      #form { background: rgba(0, 0, 0, 0.15); padding: 0.25rem; position: fixed; bottom: 0; left: 0; right: 0; display: flex; height: 3rem; box-sizing: border-box; backdrop-filter: blur(10px); }
      #input { border: none; padding: 0 1rem; flex-grow: 1; border-radius: 2rem; margin: 0.25rem; }
      #input:focus { outline: none; }
      #form > button { background: #333; border: none; padding: 0 1rem; margin: 0.25rem; border-radius: 3px; outline: none; color: #fff; }

      #messages { list-style-type: none; margin: 0; padding: 0; }
      #messages > li { padding: 0.5rem 1rem; }
      #messages > li:nth-child(odd) { background: #efefef; }
    </style>
  </head>
  <body>
    <ul id="messages"></ul>
    <form id="form" action="">
      <input id="input" autocomplete="off" /><button>Send</button>
    </form>
    <script src="/socket.io/socket.io.js"></script>
    <script>
      const TOKEN = 'PASTE_TOKEN_HERE'

      var socket = io('http://localhost:3000', {
        auth: {
          token: `Bearer ${TOKEN}`
        }
      });

      socket.on('connect_error', (error) => {
        console.log(error)
      })

      var form = document.getElementById('form');
      var input = document.getElementById('input');

      form.addEventListener('submit', function (e) {
        e.preventDefault();
        if (input.value) {
          socket.emit('chat message', input.value);
          input.value = '';
        }
      });
    </script>

  </body>
</html>

## index.js
import express from 'express'
const app = express();
import http from 'http'
const server = http.createServer(app);
import { Server } from 'socket.io'
import { authorize } from '@thream/socketio-jwt'
import jwksClient from 'jwks-rsa'
import path from 'path';
const __dirname = path.resolve();

const client = jwksClient({
  jwksUri: 'https://tham.auth0.com/.well-known/jwks.json'
})


const io = new Server(server);

io.use(
  authorize({
    algorithms: ['RS256'],
    secret: async (decodedToken) => {
      const key = await client.getSigningKey(decodedToken.header.kid)
      return key.getPublicKey()
    }
  })
)

io.on('connection', (socket) => {
  console.log('a user connected');
  socket.on('chat message', (msg) => {
    console.log('message: ' + msg);
  });

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

app.get('/', (req, res) => {
  res.sendFile(__dirname + '/index.html');
});

server.listen(3000, () => {
  console.log('listening on *:3000');
});

## package.json
{
  "name": "socket-io",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "type": "module",
  "scripts": {
    "start": "nodemon --experimental-modules index.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "Thameera Senanayaka <me@thameera.com> (https://thameera.com/)",
  "license": "MIT",
  "dependencies": {
    "@thream/socketio-jwt": "^3.0.0",
    "express": "^4.18.1",
    "jwks-rsa": "^2.1.2",
    "socket.io": "^4.5.1"
  }
}

## Socketio-jwt example
Uses https://www.npmjs.com/package/@thream/socketio-jwt
Template based on the chat example at: https://socket.io/get-started/chat

Run with:
```
node index.js
```
	<!DOCTYPE html>
	<html>
	<head>
	<title>Socket.IO chat</title>
	<style>
	body { margin: 0; padding-bottom: 3rem; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }

	#form { background: rgba(0, 0, 0, 0.15); padding: 0.25rem; position: fixed; bottom: 0; left: 0; right: 0; display: flex; height: 3rem; box-sizing: border-box; backdrop-filter: blur(10px); }
	#input { border: none; padding: 0 1rem; flex-grow: 1; border-radius: 2rem; margin: 0.25rem; }
	#input:focus { outline: none; }
	#form > button { background: #333; border: none; padding: 0 1rem; margin: 0.25rem; border-radius: 3px; outline: none; color: #fff; }

	#messages { list-style-type: none; margin: 0; padding: 0; }
	#messages > li { padding: 0.5rem 1rem; }
	#messages > li:nth-child(odd) { background: #efefef; }
	</style>
	</head>
	<body>
	<ul id="messages"></ul>
	<form id="form" action="">
	<input id="input" autocomplete="off" /><button>Send</button>
	</form>
	<script src="/socket.io/socket.io.js"></script>
	<script>
	const TOKEN = 'PASTE_TOKEN_HERE'

	var socket = io('http://localhost:3000', {
	auth: {
	token: `Bearer ${TOKEN}`
	}
	});

	socket.on('connect_error', (error) => {
	console.log(error)
	})

	var form = document.getElementById('form');
	var input = document.getElementById('input');

	form.addEventListener('submit', function (e) {
	e.preventDefault();
	if (input.value) {
	socket.emit('chat message', input.value);
	input.value = '';
	}
	});
	</script>

	</body>
	</html>
	import express from 'express'
	const app = express();
	import http from 'http'
	const server = http.createServer(app);
	import { Server } from 'socket.io'
	import { authorize } from '@thream/socketio-jwt'
	import jwksClient from 'jwks-rsa'
	import path from 'path';
	const __dirname = path.resolve();

	const client = jwksClient({
	jwksUri: 'https://tham.auth0.com/.well-known/jwks.json'
	})


	const io = new Server(server);

	io.use(
	authorize({
	algorithms: ['RS256'],
	secret: async (decodedToken) => {
	const key = await client.getSigningKey(decodedToken.header.kid)
	return key.getPublicKey()
	}
	})
	)

	io.on('connection', (socket) => {
	console.log('a user connected');
	socket.on('chat message', (msg) => {
	console.log('message: ' + msg);
	});

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

	app.get('/', (req, res) => {
	res.sendFile(__dirname + '/index.html');
	});

	server.listen(3000, () => {
	console.log('listening on *:3000');
	});
	{
	"name": "socket-io",
	"version": "1.0.0",
	"description": "",
	"main": "index.js",
	"type": "module",
	"scripts": {
	"start": "nodemon --experimental-modules index.js",
	"test": "echo \"Error: no test specified\" && exit 1"
	},
	"keywords": [],
	"author": "Thameera Senanayaka <me@thameera.com> (https://thameera.com/)",
	"license": "MIT",
	"dependencies": {
	"@thream/socketio-jwt": "^3.0.0",
	"express": "^4.18.1",
	"jwks-rsa": "^2.1.2",
	"socket.io": "^4.5.1"
	}
	}
	Uses https://www.npmjs.com/package/@thream/socketio-jwt
	Template based on the chat example at: https://socket.io/get-started/chat

	Run with:
	```
	node index.js
	```