System.IO.BACnet.BacnetClient.BeginReadRangeRequest C# (CSharp) Méthode

        public IAsyncResult BeginReadRangeRequest(BacnetAddress adr, BacnetObjectId object_id,  uint idxBegin, uint Quantity, bool wait_for_transmit, byte invoke_id = 0)
        {
            Trace.WriteLine("Sending ReadRangeRequest ... ", null);
            if (invoke_id == 0) invoke_id = unchecked(m_invoke_id++);

            //encode
            EncodeBuffer b = GetEncodeBuffer(m_client.HeaderLength);
            NPDU.Encode(b, BacnetNpduControls.PriorityNormalMessage, 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_READ_RANGE, m_max_segments, m_client.MaxAdpuLength, invoke_id, 0, 0);
            Services.EncodeReadRange(b, object_id, (uint)BacnetPropertyIds.PROP_LOG_BUFFER, ASN1.BACNET_ARRAY_ALL, BacnetReadRangeRequestTypes.RR_BY_POSITION, idxBegin, DateTime.Now, (int)Quantity);
            //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;
        }