C# (CSharp) IPPacket.MakeIPPacket Examples

Example #1

        IPPacket IPReader()
        {
            bool        b7E = false;
            byte        rx;
            List <byte> RxTemp = new List <byte>();

            while (true)
            {
                try
                {
                    rx = (byte)Com.ReadByte();
                }
                catch (InvalidOperationException ex)//端口被关闭,任务结束
                {
                    throw ex;
                }
                catch
                {
                    return(null);
                }
                if (b7E)
                {
                    if (rx == 0x7e)
                    {
                        List <byte> RxList = pppDataTransferConvert.PPPDataDecode(RxTemp);
// #if DEBUG
//                         communicationDebugForm.ExternShowRx(RxList);
// #endif

//                         ushort crc = BytesOP.MakeShort(RxList[RxList.Count - 1], RxList[RxList.Count - 2]);
//                         if (Verify.GetVerify_CRC16_CCITT(RxList.ToArray(), RxList.Count - 2) != crc)
//                             return null;
//                         if (RxList[0] == 0xff || RxList[1] == 0x03)//去掉地址字节，本库中没有
//                         {
//                             RxList.Remove(0xff);
//                             RxList.Remove(0x03);
//                         }
                        IPPacket ipUp;
                        try
                        {
                            ipUp = IPPacket.MakeIPPacket(RxList, 4);
                        }
                        catch
                        {
                            pppPocket pppUp;
                            pppUp = pppDataTransferConvert.MakepppPacket(RxList, 2);
                            switch (pppUp.Protocol)
                            {
                            case 0xc021:
                                LCP(pppUp);
                                break;

                            case 0xc023:
                                PAP(pppUp);
                                break;

                            case 0x8021:
                                IPCP(pppUp);
                                break;
                            }
                            Debug.WriteLine(Com.PortName + StringsFunction.byteToHexStr(RxTemp.ToArray(), " "));
                            return(null);
                        }
                        TCPPacket tcpUp = (TCPPacket)ipUp.oProtocolContent;
                        if (tcpUp != null)
                        {
                            OnIPProcLog("编号:" + tcpUp.InitialSeqNumber.ToString(), (int)ATCommandLogType.Rx);
                            OnIPProcLog("回应编号:" + tcpUp.AckSeqNumber.ToString(), (int)ATCommandLogType.Rx);
                            OnIPProcLog("标志:" + tcpUp.TCPFlags.ToString("X2"), (int)ATCommandLogType.Rx);
                        }
                        return(ipUp);
                    }
                    else
                    {
                        RxTemp.Add(rx);
                    }
                }
                else
                {
                    if (rx == 0x7e)
                    {
                        b7E = true;
                    }
                    else
                    {
                        OnIPProcLog("未知接收:" + rx.ToString("X2"), (int)ATCommandLogType.Rx);
                    }
                }
            }
        }