Node pubsub server based on socket.io and redis

Client.js

var client = new Pubsub({
  port: 8000
});

client.connect();

client.on("connect", function() {
  client.subscribe("trololo", function(data){
	  console.log('Received a message from the server: ' + data);
  });	  
});  

Server.js

var io = sio.listen(app); 

io.on('connection', function(socket){
  var sub = redis.createClient(); 

  socket.on('message', function (msg) { 
    if (msg.action === "subscribe") {
      console.log("Subscribe on " + msg.channel);
      sub.subscribe(msg.channel);    
    }
    if (msg.action === "unsubscribe") {
      console.log("Unsubscribe from" + msg.channel);      
      sub.unsubscribe(msg.channel); 
    }
  });
  
  socket.on('disconnect', function () { 
    sub.quit();
  });
		
  sub.on("message", function (channel, message) {
    console.log(channel +": " + message);
    socket.send({
      channel: channel,
      data: message
    });
  }); 
});