$request = HTTP::Request->new(
    'GET' => 'http://www.abc.com/ChooseZone.aspx?type=A'
);

$request->header(
    '__EVENTTARGET'   => 'rdlZone_0',
    '__EVENTARGUMENT' => '',
    '__VIEWSTATE'     => 'super_long_text',
    'rdlZone'         => '1',
);