How to pass JWT to socket.io?

Question

JavaScript

Hello, I decided to use socket.io. I have an array of users. For which a token is generated during authentication. How can a socket pass a token when the 'connection' event fires? To know which user socket.id is bound to? I used to do this:

// СЕРВЕР
io.on('connection', function (socket) {
  socket.on('news', data => {
    data.socketid = socket.id;   
// КЛИЕНТ
 ngOnInit() {
    this.socket.emit('news', this.auth);
}

but it's kapets not right, and not convenient.

Answer 1

for websocket, for example, when requesting the ws://host route (request to establish a connection / handshake)
1) pass in the Authorization: Bearer header (if according to the oauth standard)
2) issue cookies during authorization and then they themselves will be thrown when the connection is established
here is an example of how to pass headers
or resolve at the business logic level:
1) store the connection-id -> user map and reverse
2) implement the login / logout method
3) in other methods, check for authorization status when trying to access them