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	#!/usr/bin/env node

	/**
	* Module dependencies.
	*/

	var app = require('../app');
	var debug = require('debug')('express-app:server');
	var http = require('http');

	/**
	* Get port from environment and store in Express.
	*/

	var port = normalizePort(process.env.PORT \|\| '3000');
	app.set('port', port);

	/**
	* Create HTTP server.
	*/

	var server = http.createServer(app);

	/**
	* Listen on provided port, on all network interfaces.
	*/

	server.listen(port);
	server.on('error', onError);
	server.on('listening', onListening);

	/**
	* Normalize a port into a number, string, or false.
	*/

	function normalizePort(val) {
	var port = parseInt(val, 10);

	if (isNaN(port)) {
	// named pipe
	return val;
	}

	if (port >= 0) {
	// port number
	return port;
	}

	return false;
	}

	/**
	* Event listener for HTTP server "error" event.
	*/

	function onError(error) {
	if (error.syscall !== 'listen') {
	throw error;
	}

	var bind = typeof port === 'string'
	? 'Pipe ' + port
	: 'Port ' + port;

	// handle specific listen errors with friendly messages
	switch (error.code) {
	case 'EACCES':
	console.error(bind + ' requires elevated privileges');
	process.exit(1);
	break;
	case 'EADDRINUSE':
	console.error(bind + ' is already in use');
	process.exit(1);
	break;
	default:
	throw error;
	}
	}

	/**
	* Event listener for HTTP server "listening" event.
	*/

	function onListening() {
	var addr = server.address();
	var bind = typeof addr === 'string'
	? 'pipe ' + addr
	: 'port ' + addr.port;
	debug('Listening on ' + bind);
	}