function connect_socket (token) {
  var socket = io.connect('', {
    query: 'token=' + token
  });

  socket.on('authenticated', () => {
    console.log('socket is jwt authenticated');
  });
  socket.on('connect', () => {
    this.socket.emit('authenticate', { token: token });
  });
  socket.on('disconnect', () => {
    console.log('disconnected');
  });
  socket.on('loadChats', data => {
    console.log({ loadChats: data })
  });
}

$('#login').submit(function (e) {
  e.preventDefault();
  $.post('/login', {
    username: $('username').val(),
    password: $('password').val()
  }).done(function (result) {
    connect_socket(result.token);
  });
});