Jetpack_Protect_Module::get_headers PHP Method

    function get_headers()
    {
        $ip_related_headers = array('GD_PHP_HANDLER', 'HTTP_AKAMAI_ORIGIN_HOP', 'HTTP_CF_CONNECTING_IP', 'HTTP_CLIENT_IP', 'HTTP_FASTLY_CLIENT_IP', 'HTTP_FORWARDED', 'HTTP_FORWARDED_FOR', 'HTTP_INCAP_CLIENT_IP', 'HTTP_TRUE_CLIENT_IP', 'HTTP_X_CLIENTIP', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_X_FORWARDED', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_IP_TRAIL', 'HTTP_X_REAL_IP', 'HTTP_X_VARNISH', 'REMOTE_ADDR');
        foreach ($ip_related_headers as $header) {
            if (isset($_SERVER[$header])) {
                $output[$header] = $_SERVER[$header];
            }
        }
        return $output;
    }