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;
}
}
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;
}