static public function getHttpHost($http = false, $entities = false)
    {
        $host = (isset($_SERVER['HTTP_X_FORWARDED_HOST']) ? $_SERVER['HTTP_X_FORWARDED_HOST'] : $_SERVER['HTTP_HOST']);
        if ($entities)
            $host = htmlspecialchars($host, ENT_COMPAT, 'UTF-8');
        if ($http)
            $host = (Configuration::get('PS_SSL_ENABLED') ? 'https://' : 'http://').$host;
        return $host;
    }