$req = new HTTP:Req(GET => url1);
$req->header('Cookie' => cookie1);
$resp = $mech->simple_request($req);
my $session = $resp->header('set-cookie');
$req2 = new HTTP:Req(GET => url1);#yes url1 again ;(
$req2->header('Cookie' => $session);
$req2->{_headers}->authorization_basic(user,pass);
$resp2 = $mech->simple_request($req2);
$req3 = new HTTP:Req(GET => url3);
$req->header('Cookie' => $session);
$resp3 = $mech->simple_request($req3);
done..continue with $mech only..