title: getting empty in http refer on facebook app
body: <p>I have a website which uses http refer, and I have made a Facebook application and I have given that site in Facebook application its working.
  but there is error </p>
  
  <p>when one of my client uses https on Facebook than  I am getting empty in http refer
  but it works when client uses http on Facebook than I get the http refer.</p>
  
  <p>is there any solution kindly share.
  thanks in advance</p>