app.js


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#!/usr/bin/env node
'use strict';
var express = require('express'),
    app = express();

app.get('/', function(req, resp) {
    resp.send('Hello!');
});

var server = app.listen(3000, function() {
    var host = server.address().address,
        port = server.address().port;

    if (/:/.test(host)) {
        // IPv6 literals
        host = '[' + host + ']';
    }

    console.log('http://%s:%d', host, port);
});