socketio-jwt/README.md

<h1 align="center">Thream/socketio-jwt</h1>

<p align="center">
  <strong>Authenticate socket.io incoming connections with JWTs.</strong>
</p>

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</p>

## 📜 About

Authenticate socket.io incoming connections with JWTs.

Compatible with `socket.io >= 3.0`.

This repository was originally forked from [auth0-socketio-jwt](https://github.com/auth0-community/auth0-socketio-jwt) & it is not intended to take any credit but to improve the code from now on.

## 💾 Install

```sh
npm install --save @thream/socketio-jwt
```

## ⚙️ Usage

### Server side

```ts
import { Server } from 'socket.io'
import socketioJWT from '@thream/socketio-jwt'

const io = new Server(9000)
io.use(
  authorize({
    secret: 'your secret or public key'
  })
)

io.on('connection', async () => {
  const clients = await io.sockets.allSockets()
  for (const clientId of clients) {
    const client = io.sockets.sockets.get(clientId)
    console.log(client.decodedToken) // we can access the jwt payload of each connected client
  }
})
```

### Client side

```ts
import { io } from 'socket.io-client'

// Require Bearer Tokens to be passed in as an Authorization Header
const socket = io('http://localhost:9000', {
  extraHeaders: { Authorization: `Bearer ${yourJWT}` }
})

// Handling token expiration
socket.on('connect_error', (error) => {
  if (error.data.type === 'UnauthorizedError') {
    console.log('User token has expired')
  }
})

// Listening to events
socket.on('messages', (data) => {
  console.log(data)
})
```

## 💡 Contributing

Anyone can help to improve the project, submit a Feature Request, a bug report or even correct a simple spelling mistake.

The steps to contribute can be found in the [CONTRIBUTING.md](./.github/CONTRIBUTING.md) file.

## 📄 License

[MIT](./LICENSE)