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loopbackchat

StrongLoop Loopback with socket.io chat example

Install StrongLoop

npm install -g strongloop

Create new loopback application

slc loopback

Integrating Socket.IO

npm install --save socket.io

Defining middleware(server/middleware.json)

...
"routes": {
  },
  "files": {
    "loopback#static": {
      "params": "$!../client"
    }
  },
...

Add a static web page(client/index.html)

<!doctype html>
<html>
  <head>
    <title>Socket.IO chat</title>
    <style>
      * { margin: 0; padding: 0; box-sizing: border-box; }
      body { font: 13px Helvetica, Arial; }
      form { background: #000; padding: 3px; position: fixed; bottom: 0; width: 100%; }
      form input { border: 0; padding: 10px; width: 90%; margin-right: .5%; }
      form button { width: 9%; background: rgb(130, 224, 255); border: none; padding: 10px; }
      #messages { list-style-type: none; margin: 0; padding: 0; }
      #messages li { padding: 5px 10px; }
      #messages li:nth-child(odd) { background: #eee; }
    </style>
  </head>
  <body>
    <ul id="messages"></ul>
    <form action="">
      <input id="m" autocomplete="off" /><button>Send</button>
    </form>
    <script src="https://cdn.socket.io/socket.io-1.2.0.js"></script>
    <script src="http://code.jquery.com/jquery-1.11.1.js"></script>
    <script>
    var socket = io();
    $('form').submit(function(){
      socket.emit('chat message', $('#m').val());
      $('#m').val('');
      return false;
    });
    socket.on('chat message', function(msg){
      $('#messages').append($('<li>').text(msg));
    });
    </script>
  </body>
</html>

create chat server(server/server.js)

...
if (require.main === module) {
  //app.start();
  app.io = require('socket.io')(app.start());
  app.io.on('connection', function(socket){
  	console.log('a user connected');
  	socket.on('chat message', function(msg){
    	console.log('message: ' + msg);
    	app.io.emit('chat message', msg);
  	});
  	socket.on('disconnect', function(){
  		console.log('user disconnected');
  	});
  });
  
}

run loopbackchat

slc run
http://0.0.0.0:3000/

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