Checking renewability of TGT programatically

[Arpit Srivastava]

Hi,

I am using GSS API with Kerberos as underlying implementation. I am
fetching a TGT from AD, and I need to check whether the ticket is is
renewable or not either preferably using some GSS API method (or some
native method). The purpose is to renew the TGT well before it is expired.
How to obtain the maximum renewal time. Any help will be highly
appreciated.

Arpit