can flash get redirect link?

Hello everybody.
I face the following problem: I have a flash file that request to an URL but the URL then redirect right away to other URL (for example I use flash to request to the address http://example.com/a.php and then the URL redirect to http://example.com/b.php) Can flash then get the redirect URL for later usage? (in this case http://example.com/b.php).
Please help me.
Thank you very much