public string GetErrorMessage(TCP_PacketError error)
{
TCP tcp = Packet.TCP;
switch (error)
{
case TCP_PacketError.ErrorBadDirection:
return("error wrong direction");
case TCP_PacketError.WarningBadFlagAck:
return("warning ack should not be set");
case TCP_PacketError.WarningOpenConnection2BadAck:
return(string.Format("warning ack (0x{0}) != source seq + 1 (0x{1})", tcp.AckSequence.zToHex(), (StreamState.CurrentSourceSequence - 1).zToHex()));
case TCP_PacketError.WarningOpenConnection2BadMessagePosition:
return("warning message should be just after open connection step 1");
case TCP_PacketError.ErrorOpenConnection2BadDirection:
return(string.Format("error wrong direction, TCP open 2, SYN seq = y (0x{0}), ACK x + 1 (0x{1})", tcp.Sequence.zToHex(), tcp.AckSequence.zToHex()));
case TCP_PacketError.WarningOpenConnection3BadAck:
return(string.Format("warning ack (0x{0}) != destination seq + 1 (0x{1})", tcp.AckSequence.zToHex(), StreamState.CurrentDestinationSequence.zToHex()));
case TCP_PacketError.WarningCloseSourceConnection1BadSeq:
return(string.Format("warning seq (0x{0}) != source seq (0x{1})", tcp.Sequence.zToHex(), StreamState.CurrentSourceSequence.zToHex()));
case TCP_PacketError.WarningCloseSourceConnection2BadAck:
return(string.Format("warning ack (0x{0}) != source seq + 1 (0x{1})", tcp.AckSequence.zToHex(), StreamState.CurrentSourceSequence.zToHex()));
case TCP_PacketError.WarningCloseDestinationConnection1BadSeq:
return(string.Format("warning seq (0x{0}) != destination seq (0x{1})", tcp.Sequence.zToHex(), StreamState.CurrentDestinationSequence.zToHex()));
case TCP_PacketError.WarningCloseDestinationConnection1BadAck:
return(string.Format("warning ack (0x{0}) != source seq + 1 (0x{1})", tcp.AckSequence.zToHex(), StreamState.CurrentSourceSequence.zToHex()));
case TCP_PacketError.WarningCloseDestinationConnection2BadAck:
return(string.Format("warning ack (0x{0}) != destination seq + 1 (0x{1}) (ACK y + 1)", tcp.AckSequence.zToHex(), StreamState.CurrentDestinationSequence.zToHex()));
default:
return(null);
}
}
public void AddError(TCP_PacketError error)
{
Errors.Add(error);
}
