WWW::Mechanize will automatically handle redirects, but those should be short messages.

Using LWP::Debug you can get a trace of all the traffic that Mechanize is generating.

use WWW::Mechanize;
use LWP::Debug;
my $mech = WWW::Mechanize->new();
LWP::Debug::level("+");
$mech->get("http://www.cnn.com/");
print length($mech->content), "\n";
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