Routing HTTP requests through Node.js

I am trying to install a cucumber test using Node.js, which can test any site using an iframe. Usually an iframe is not an option due to script security restrictions. However, if it was possible (I'm sure it is. And I hope you come up with a solution) so that the site is targeted for the test via the requested URL when a specific URL name is requested, so that the iframe will be loaded with a copy of the test goals. Basically just a standard Node.js server that retrieves specific pages based on the req.url Address-like router.

Here is my blatant attempt to do just that. Getting a test page through. URL works. But I have a problem switching from an http server to a connection object. Is there any way to “feed” the connection with the http server response?

PS. I also created a solution with two Node.js servers. Node 1 selected a test target and mixed it with the cucumber test page. Node 2, where the cucumber test takes place. This solution works. But this creates problems on sites where javascript name conflicts occur. This is why an iframe solution that solves this problem through encapsulation is more attractive.

var http  = require('http');
var connect    = require('connect');
var port  = process.env.PORT || 8788;

var server = http.createServer(function(req, webres)
{
    var url = req.url;
    console.log(url);

    if(url == '/myWebsiteToBeTestedWithCucumberJS')
    {
        // Load the web site to be tested "myWebsiteToBeTestedWithCucumberJS"
            // And update the references
            // Finaly write the page with the webres
            // The page will appear to be hosted locally

        console.log('Loading myWebsiteToBeTestedWithCucumberJS');
        webres.writeHead(200, {'content-type': 'text/html, level=1'});
        var options =
        {  
                   host: 'www.myWebsiteToBeTestedWithCucumberJS.com,   
                   port: 80,   
                   path: '/'
        };

        var page = '';
        var req = http.get(options, function(res)
        {
            console.log("Got response: " + res.statusCode);   
            res.on('data', function(chunk)
            {
                page = page + chunk;
            });   
            res.on('end', function()
            {
                    // Change relative paths to absolute (actual web location where images, javascript and stylesheets is placed)
                    page = page.replace(/ href="\/\//g       , ' href="/');
                    page = page.replace(/ src="\//g          , ' src="www.myWebsiteToBeTestedWithCucumberJS.com');
                    page = page.replace(/ data-src="\//g     , ' data-src="www.myWebsiteToBeTestedWithCucumberJS.com');
                    page = page.replace(/ href="\//g         , ' href="www.myWebsiteToBeTestedWithCucumberJS.com');

                    webres.write(page);
                    webres.end('');
            });
        });
    }
    else
    {
        // Load any file from localhost:8788
            // This is where the cucumber.js project files are hosted
        var dirserver     = connect.createServer();
        var browserify = require('browserify');
        var cukeBundle = browserify({
          mount: '/cucumber.js',
          require: ['cucumber-html', './lib/cucumber', 'gherkin/lib/gherkin/lexer/en'],
          ignore: ['./cucumber/cli', 'connect']
        });
        dirserver.use(connect.static(__dirname));
        dirserver.use(cukeBundle);
        dirserver.listen(port);
    }
}).on('error', function(e)
{  
      console.log("Got error: " + e.message);   
});
server.listen(port);
console.log('Accepting connections on port ' + port + '...');