use URI;
$u1 = URI->new('http://www.comp.Leeds.ac.uk/Perl/')->canonical();
$u2 = URI->new('http://www.comp.leeds.ac.uk/Perl/filehandling.html')->canonical();
print "u1.host=",$u1->host(),"\n";
print "u2.host=",$u2->host(),"\n";
if ($u1->host() eq $u2->host()) {
   print "URL's host are the same\n";
}
else {
   print "oops\n";
}