How to fix Facebook Circular Redirect?

Question

I have a page that redirects to another page I'm trying to test my url on: https://developers.facebook.com/tools/debug

I get this error:

Errors That Must Be Fixed: Circular Redirect:‎ Circular redirect path detected (see Redirect Path section for details).  Warnings That Should Be Fixed: ‎The og:url property should be explicitly provided, even if a value can be inferred from other tags.‎ 

1. How can I fix this problem?
2. How to detect Facebook and, if it is Facebook, don't redirect?

Answer 1

I just resolved this by adding a "/" to the end of the Facebook url meta tag. So, changed

<meta property="og:url" content="http://domain.com/path"/> 

to

<meta property="og:url" content="http://domain.com/path/"/> 

and that did the trick!