title: The deployed app through Heroku doesn't show visitor's ip
body: <p>I deployed my app using heroku service. On my local mashine it shows clearly <code>127.0.0.1 Reserved</code> when i type </p>
  
  <pre><code>&lt;%= request.ip %&gt;   
  &lt;%= request.location.city %&gt;    
  &lt;%= request.location.country %&gt;
  </code></pre>
  
  <p>but when i deploy it through Heroku i don't get any ip, where is the problem ?</p>