Building a Socket.io chat

To test your Socket.io implementation, you will build a simple chat application. Your chat will be constructed from several server event handlers, but most of the implementation will take place in your AngularJS application. We'll begin with setting the server event handlers.

Setting the event handlers of the chat server

Before implementing the chat client in your AngularJS application, you'll first need to create a few server event handlers. You already have a proper application structure, so you won't implement the event handlers directly in your configuration file. Instead, it would be better to implement your chat logic by creating a new file named chat.server.controller.js inside your app/controllers folder. In your new file, paste the following lines of code:

module.exports = function(io, socket) {
  io.emit('chatMessage', {
    type: 'status',
    text: 'connected',
    created: Date.now(),
    username: socket.request.user.username
  });

  socket.on('chatMessage...