express not responding to route

I am using nodejs and express for api end points, I am using app.use to handle a route, but it is not responding no matter what I do.

var express = require("express");
var mongoose = require('mongoose');
var path = require("path");
var favicon = require("serve-favicon");
var http = require('http');

var app = express();

var config = require('./conf/config');

var PORT = config.PORT;

mongoose.connect(config.MONGODB);

//route handlers

app.use('/', function(req, res) {
    console.log("Hello");
});

var server = http.createServer(function(req, res) {
    console.log("Request received", req.url);
});

server.listen(PORT);
console.log("Server running on port", PORT);

It should print hello on console whenever I request on root route i.e. / but it's not doing anything.

via Girdhari Agrawal