login.js

function listen(){
	app.use(express.bodyParser());
	
	app.post('/login', function(req, res) {
		
		var username = req.body.username;
		var password = req.body.password;
	
		console.log('User ' + username + ' is attempting login...');
		
		validator.validate(username,password,function(err,result){
			if (err) loginFail(req,res,err);
			else loginSucceed(req,res,result);
		});	
	});

	app.listen(8080, function() {
		console.log('Server running at http://127.0.0.1:8080/');
	});
}

exports.listen = listen;

server.js

console.log('server module initialized');
var express = require('express');
var login = require("./login");
var app     = express();

login.listen();