Can Big-IP Handle Outside Site redirects transparently to client

A couple of considerations.

1. The [HTTP::is_redirect] command detects the presence of a 30x status message in a response. It has no meaning in an HTTP request.

2. If the 30x response is not flowing through the BIG-IP, an iRule can't see it. In other words, if the outside site issues a redirect, the BIG-IP would not see it.

3. If capturing redirects in a response, there are a few things you can do, but probably one of the easiest is to simply rewrite the Location header. Example:

   when HTTP_RESPONSE {
       if { [HTTP::is_redirect] } {
           HTTP::header remove Location
           HTTP::header insert Location "https://www.somwehere.else.com"
       }
   }