[JavaScript] Serving Casperjs over Node Server

gistfile1.js

var ip_server = '127.0.0.1:8899';

//includes web server modules
var server = require('webserver').create();

//start web server
var service = server.listen(ip_server, function(request, response) {

    var links = [];
    var casper = require('casper').create();

    function getLinks() {
        var links = document.querySelectorAll('h3.r a');
        return Array.prototype.map.call(links, function(e) {
            return e.getAttribute('href')
        });
    }

    casper.start('http://google.com/', function() {
        this.fill('form[action="/search"]', { q: 'gooogle' }, true);
    });

    casper.then(function() {
        links = this.evaluate(getLinks);
    });

    //
    casper.run(function() {
            response.statusCode = 200;
            //sends results as JSON object
            response.write(JSON.stringify(links, null, null));
            response.close();              
    });

});

console.log('Server running at http://' + ip_server+'/');