title: Dynamic Proxy in phantomjs
body: <p>I tried it</p>
  
  <p>phantomjs --proxy=ip:port example.js</p>
  
  <pre><code>var page = require('webpage').create();
  page.onConsoleMessage = function(msg) {
      console.log(msg);
  };
  page.onLoadFinished = function(status){
      if (!status){
          console.log('fail');
          phantom.exit();
      }
      page.render("1.png");
      phantom.exit();
  };
  page.open("http://example1.net/");
  page.open("http://example2.net/");
  </code></pre>
  
  <p>but I want to go through proxy for example1.net only
  I don't want for example2.net</p>
  
  <p>How can I solve it?</p>