title: What is the difference between HTTP_X_FORWARDED_FOR and HTTP_FORWARDED
body: <p>I have been looking for a way to find the IP Address of the client and I've found both of these HTTP Headers.  From what I've found they are the same thing, but HTTP_X_FORWARDED_FOR seems more widely used.  Do any of you know what the difference is and if I am going to have to check both of these?  Thanks.</p>