How do you get the URL of the page after your last request via www::mechanize? I was reading the DOCS and it looks like $mech->uri() should hold the URL but all it does is error out with

Use of uninitialized value in string at bot.pl line 194.
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I have a feeling this site occassionally redirects to an IP address when the traffic is at high tide and I need to test whether or not my URLs are still accessible.

   my $mech = WWW::Mechanize->new();
   $mech->get($url);
   print $mech->uri();
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