public Connection(Tamir.IPLib.Packets.TCPPacket packet)
{
m_srcIp = packet.SourceAddress;
m_dstIp = packet.DestinationAddress;
m_srcPort = (ushort)packet.SourcePort;
m_dstPort = (ushort)packet.DestinationPort;
}
/// <summary>
/// The main function of the class receives a tcp packet and reconstructs the stream
/// </summary>
/// <param name="tcpPacket"></param>
public void ReassemblePacket(Tamir.IPLib.Packets.TCPPacket tcpPacket)
{
// if the paylod length is zero bail out
ulong length = (ulong)(tcpPacket.TCPPacketByteLength - tcpPacket.TCPHeaderLength);
if (length == 0)
{
return;
}
// Raise Events
if (tcpPacket.Syn && tcpPacket.Ack)
{
this.OnSynRecived(this);
}
else if (tcpPacket.Fin && tcpPacket.Ack)
{
this.OnFinRecived(this);
}
else if (tcpPacket.Rst)
{
this.OnRstRecived(this);
}
reassemble_tcp((ulong)tcpPacket.SequenceNumber, length,
tcpPacket.TCPData, (ulong)tcpPacket.TCPData.Length, tcpPacket.Syn,
tcpPacket.SourceAddressAsLong, tcpPacket.DestinationAddressAsLong,
(uint)tcpPacket.SourcePort, (uint)tcpPacket.DestinationPort);
}
public void ReassemblePacket(Tamir.IPLib.Packets.TCPPacket tcpPacket)
{
PacketWritten = false;
ulong length = (ulong)(tcpPacket.TCPPacketByteLength - tcpPacket.TCPHeaderLength);
if (length == 0)
{
return;
}
reassemble_tcp((ulong)tcpPacket.SequenceNumber, length,
tcpPacket.TCPData, (ulong)tcpPacket.TCPData.Length, tcpPacket.Syn,
tcpPacket.SourceAddressAsLong, tcpPacket.DestinationAddressAsLong,
(uint)tcpPacket.SourcePort, (uint)tcpPacket.DestinationPort);
}
public static int GenerateHashCode(Tamir.IPLib.Packets.TCPPacket packet)
{
return(((packet.SourceAddress.GetHashCode() ^ packet.SourcePort.GetHashCode()) as object).GetHashCode() ^
((packet.DestinationAddress.GetHashCode() ^ packet.DestinationPort.GetHashCode()) as object).GetHashCode());
}
