phpseclib\System\SSH\Agent::_request_forwarding PHP Method

    function _request_forwarding($ssh)
    {
        $request_channel = $ssh->_get_open_channel();
        if ($request_channel === false) {
            return false;
        }
        $packet = pack('CNNa*C', NET_SSH2_MSG_CHANNEL_REQUEST, $ssh->server_channels[$request_channel], strlen('[email protected]'), '[email protected]', 1);
        $ssh->channel_status[$request_channel] = NET_SSH2_MSG_CHANNEL_REQUEST;
        if (!$ssh->_send_binary_packet($packet)) {
            return false;
        }
        $response = $ssh->_get_channel_packet($request_channel);
        if ($response === false) {
            return false;
        }
        $ssh->channel_status[$request_channel] = NET_SSH2_MSG_CHANNEL_OPEN;
        $this->forward_status = self::FORWARD_ACTIVE;
        return true;
    }