title: Can a server check whether a request is coming from an iframe (Node.js)?
body: <ol>
  <li><p>I want my server to be able to check whether a request that came through came from within an <strong>iframe</strong></p></li>
  <li><p>If the request came from within an iframe, I want my server to be able to find the domain name of the <strong>parent</strong> of that iframe</p></li>
  </ol>
  
  <p>Is any of the above possible and if yes how can I implement such a check in a <code>Node.js</code>/<code>Express.js</code> server?</p>
  
  <p>Thank you in advance for any help</p>