index.js

var candyMachine =  require("./hardware");
var app = require("./server");
app.candyMachine = candyMachine;

// Twitter stuff.
require("./configure")(app);
app.configure();

var startTwitterListener = function(){

	var stream = app.T.stream('statuses/filter', { track: 'RaspberryPi' });

	stream.on('tweet', function (tweet) {
		if(!tweet.retweeted_status){
		  console.log(tweet.user.name + ': ' + tweet.text);
		  console.log(' ');
		  if(app.candyMachine){
			  app.candyMachine.dispense();
			}
		} else{
		  console.warn('RT doesn\'t count '+ tweet.user.name);
		}
	});

	stream.on('limit', function (limitMessage) {
	  	console.error('You\'re hitting the twitter limit.');
	});

	// on error try again 5 seconds later
	stream.on('error', function(){
	  setTimeout( startTwitterListener , 5000);
	});

}

// first attempt after 2 seconds.:
setTimeout( startTwitterListener , 2000);