title: OAuth 2.0 authentication using Apache HTTPd module
body: <p>Is it possible to implement OAuth 2.0 or 1.0 using an Apache HTTPd server module?</p>
  <p>I am choosing this route because each and every request will first reach the HTTPd module, so from there I have to authenticate.</p>
  <p>If it is possible, please share a related link for that.</p>