C# (CSharp) PacketSniffer TCPData 예제들

예제 #1

파일: PacketHandler.cs 프로젝트: pinkeemm/PacketSniffer

        private void TCPHandler(ref byte[] PacketData)
        {
            TCPData TCP = new TCPData();

            IPHandler(TCP, ref PacketData);
            byte[] p_TCPData = new byte[(PacketData.Length - TCP.IP_IHL)];
            Buffer.BlockCopy(PacketData, TCP.IP_IHL, p_TCPData, 0, p_TCPData.Length);
            TCP.TCP_SourcePort            = (ushort)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 0));
            TCP.TCP_DestinationPort       = (ushort)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 2));
            TCP.TCP_SequenceNumber        = (uint)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 4));
            TCP.TCP_AcknowledgementNumber = (uint)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 8));
            TCP.TCP_DataOffset            = (byte)((p_TCPData[12] >> 4) * 4);
            TCP.TCP_ControlBits           = (byte)((p_TCPData[13] & 0x3F));
            TCP.TCP_Window        = (ushort)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 14));
            TCP.TCP_Checksum      = (ushort)(IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 16)));
            TCP.TCP_UrgentPointer = (ushort)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 18));
            if (!((TCP.TCP_DataOffset - 20) <= 0))
            {
                byte[] p_TCPOptions = new byte[TCP.TCP_DataOffset - 20];
                Buffer.BlockCopy(p_TCPData, 20, p_TCPOptions, 0, p_TCPOptions.Length);
                TCP.TCP_OptionsCreate(ref p_TCPOptions);
            }
            if (!((TCP.IP_TotalLength - (TCP.TCP_DataOffset + TCP.IP_IHL)) <= 0))
            {
                byte[] p_DataSend = new byte[TCP.IP_TotalLength - (TCP.TCP_DataOffset + TCP.IP_IHL)];
                Buffer.BlockCopy(p_TCPData, TCP.TCP_DataOffset, p_DataSend, 0, p_DataSend.Length);
                TCP.PacketDataCreate(ref p_DataSend);
                PRE.fire(TCP);
            }
            else
            {
                return;
            }
        }

예제 #2

파일: PacketHandler.cs 프로젝트: d3xt3-bitstechlab/PacketSniffer

 private void TCPHandler(ref byte[] PacketData)
 {
     TCPData TCP = new TCPData();
     IPHandler(TCP, ref PacketData);
     byte[] p_TCPData = new byte[(PacketData.Length - TCP.IP_IHL)];
     Buffer.BlockCopy(PacketData, TCP.IP_IHL, p_TCPData, 0, p_TCPData.Length);
     TCP.TCP_SourcePort = (ushort)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 0));
     TCP.TCP_DestinationPort = (ushort)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 2));
     TCP.TCP_SequenceNumber = (uint)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 4));
     TCP.TCP_AcknowledgementNumber = (uint)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 8));
     TCP.TCP_DataOffset = (byte)((p_TCPData[12] >> 4) * 4);
     TCP.TCP_ControlBits = (byte)((p_TCPData[13] & 0x3F));
     TCP.TCP_Window = (ushort)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 14));
     TCP.TCP_Checksum = (ushort)(IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 16)));
     TCP.TCP_UrgentPointer = (ushort)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(p_TCPData, 18));
     if (!((TCP.TCP_DataOffset - 20) <= 0))
     {
         byte[] p_TCPOptions = new byte[TCP.TCP_DataOffset - 20];
         Buffer.BlockCopy(p_TCPData, 20, p_TCPOptions, 0, p_TCPOptions.Length);
         TCP.TCP_OptionsCreate(ref p_TCPOptions);
     }
     if (!((TCP.IP_TotalLength - (TCP.TCP_DataOffset + TCP.IP_IHL)) <= 0))
     {
         byte[] p_DataSend = new byte[TCP.IP_TotalLength - (TCP.TCP_DataOffset + TCP.IP_IHL)];
         Buffer.BlockCopy(p_TCPData, TCP.TCP_DataOffset, p_DataSend, 0, p_DataSend.Length);
         TCP.PacketDataCreate(ref p_DataSend);
         PRE.fire(TCP);
     }else return;
 }