System.IO.BACnet.BacnetMstpProtocolTransport.UseToken C# (CSharp) Méthode

        private StateChanges UseToken()
        {
            if (m_send_queue.Count == 0)
            {
                /* NothingToSend */
                m_frame_count = m_max_info_frames;
                return StateChanges.NothingToSend;
            }
            else
            {
                /* SendNoWait / SendAndWait */
                MessageFrame message_frame = m_send_queue.First.Value;
                m_send_queue.RemoveFirst();
                SendFrame(message_frame);
                m_frame_count++;
                if (message_frame.frame_type == BacnetMstpFrameTypes.FRAME_TYPE_BACNET_DATA_EXPECTING_REPLY || message_frame.frame_type == BacnetMstpFrameTypes.FRAME_TYPE_TEST_REQUEST)
                    return StateChanges.SendAndWait;
                else
                    return StateChanges.SendNoWait;
            }
        }