emit from client socket.io code example

Example 1: angular socket.io with token header

var socket = io("http://localhost", {
  extraHeaders: {
    Authorization: "Bearer authorization_token_here"
  }
});

Example 2: socket io query

// Client side
const socket = io({
  query: { token: 'cde' }
});

// Server side
io.on('connection', (socket) => {
  let token = socket.handshake.query.token;
  
  // Do something...
});