System.IO.BACnet.BacnetAsyncResult.Resend C# (CSharp) Méthode

        public void Resend()
        {
            try
            {
                if (m_comm.Transport.Send(m_transmit_buffer, m_comm.Transport.HeaderLength, m_transmit_length, m_adr, m_wait_for_transmit, m_transmit_timeout) < 0)
                {
                    Error = new System.IO.IOException("Write Timeout");
                }
            }
            catch (Exception ex)
            {
                Error = new Exception("Write Exception: " + ex.Message);
            }
        }

        public IAsyncResult BeginWritePropertyMultipleRequest(BacnetAddress adr, ICollection<BacnetReadAccessResult> value_list, bool wait_for_transmit, byte invoke_id = 0)
        {
            Trace.WriteLine("Sending WritePropertyMultipleRequest ... ", null);
            if (invoke_id == 0) invoke_id = unchecked(m_invoke_id++);

            EncodeBuffer b = GetEncodeBuffer(m_client.HeaderLength);
            //BacnetNpduControls.PriorityNormalMessage
            NPDU.Encode(b, BacnetNpduControls.PriorityNormalMessage | BacnetNpduControls.ExpectingReply, adr.RoutedSource, null, DEFAULT_HOP_COUNT, BacnetNetworkMessageTypes.NETWORK_MESSAGE_WHO_IS_ROUTER_TO_NETWORK, 0);

            APDU.EncodeConfirmedServiceRequest(b, BacnetPduTypes.PDU_TYPE_CONFIRMED_SERVICE_REQUEST | (m_max_segments != BacnetMaxSegments.MAX_SEG0 ? BacnetPduTypes.SEGMENTED_RESPONSE_ACCEPTED : 0), BacnetConfirmedServices.SERVICE_CONFIRMED_WRITE_PROP_MULTIPLE, m_max_segments, m_client.MaxAdpuLength, invoke_id, 0, 0);
            Services.EncodeWriteObjectMultiple(b, value_list);

            //send
            BacnetAsyncResult ret = new BacnetAsyncResult(this, adr, invoke_id, b.buffer, b.offset - m_client.HeaderLength, wait_for_transmit, m_transmit_timeout);
            ret.Resend();

            return ret;
        }