data, err := proto.Marshal(msg)
	if err != nil {
		return nil, err
	}
	return z.sendDataAndWaitForAck(data, fd)
}

func (z *ZtunnelConnection) sendDataAndWaitForAck(data []byte, fd *int) (*zdsapi.WorkloadResponse, error) {
	var rights []byte
	if fd != nil {
		rights = unix.UnixRights(*fd)
	}