redirects for phantomjs

redirect-on-navigation,js

var system = require('system'),
    webpage = require('webpage'),
    t,
    mainUrl,
    address;

if (system.args.length === 1) {
  console.log('Usage: loadspeed.js <some URL>');
  phantom.exit();
}

t = Date.now();
mainUrl = address = system.args[1];

renderPage(address);

function renderPage(urlToLoad) {
  var page = webpage.create(),
      redirectURL = null;

  console.log('..LOADING ' + urlToLoad + '..');

  // METHOD 1 FOR HANDLE REDIRECTS
  page.onNavigationRequested = function(url, type, willNavigate, main) {
    console.log('ON NAVIGATION REQUESTED: ' + url);

    if (main && url !== address) {
      address = url;
      console.log('..REDIRECTING FROM ' + urlToLoad + ' TO '+ url + '..');
      page.close();
      renderPage(url);
    }
  };

  console.log('..OPENING ' + urlToLoad + '..');

  page.open(urlToLoad, function(status) {
    var exportedImgName = 'images/' +parseInt(Math.random() * 1000, 10) + parseInt(Math.random() * 1000, 10) + '.png';

    if (redirectURL) {
      console.log('..The ' + urlToLoad + ' are redirecting to ' + redirectURL + '..');
      return renderPage(redirectURL);
    } else if (status === 'success') {
      t = Date.now() - t;
      console.log('-------------------------------------');
      console.log('Original requested url: ' + mainUrl);
      console.log('Url loaded: ' + urlToLoad);
      console.log('Loading time: ' + t + ' msec');
      page.render(exportedImgName);
      console.log('Snapshot saved to ' + exportedImgName);
      console.log('-------------------------------------');
    } else {
      console.log('-------------------------------------');
      console.log('FAIL to load the address: ' + status);
      console.log('-------------------------------------');
    }

    console.log('..EXIT..');

    phantom.exit();
  });
}

redirects.js

function renderPage(url) {
  var page = require('webpage').create();
  var redirectURL = null;

  page.onResourceReceived = function(resource) {
    if (url == resource.url && resource.redirectURL) {
      redirectURL = resource.redirectURL;
    }
  };

  page.open(url, function(status) {
    if (redirectURL) {
      renderPage(redirectURL);
    } else if (status == 'success') {
      // ...
    } else {
      // ...
    }
  });
}