private void TXLoop()
{
uint slen = 0;
while (true)
{
var txPacket = txBuffer.Take();
if (!WinDivertMethods.WinDivertSend(handle, txPacket.Data, (uint)txPacket.Data.Length, ref txPacket.Addr, ref slen))
{
continue;
Console.WriteLine("Send Failed");
Console.WriteLine(BitConverter.ToString(txPacket.Data).Replace("-", ""));
}
}
}
private void Steg()
{
try
{
_stegPacket = true;
int breakCount = 1;
_stegPacketCount = 1;
_stegTokenSource.Token.ThrowIfCancellationRequested();
OnMessage(Resources.StegonographyInitializeMessage);
unsafe
{
_stegHandler = WinDivertMethods.WinDivertOpen(string.Format(Resources.Template_DestinationFilter, _port),
WINDIVERT_LAYER.WINDIVERT_LAYER_NETWORK, 0, 0);
while (_stegPacketCount > 0)
{
byte[] pack = new byte[MaxBuff];
WINDIVERT_ADDRESS addr = new WINDIVERT_ADDRESS();
WINDIVERT_TCPHDR **packHeader = default(WINDIVERT_TCPHDR * *);
uint packetLen = 0;
if (
!WinDivertMethods.WinDivertRecv(_stegHandler, pack, (uint)pack.Length, ref addr,
ref packetLen))
{
continue;
}
WinDivertMethods.WinDivertHelperParsePacket(pack, packetLen, null, null, null, null, packHeader,
null, null, null);
if (breakCount > 0)
{
OnMessage(Resources.SendLegalDataMessage);
}
else
{
OnMessage(Resources.StegonographyAddedMessage);
for (int i = 0; i < _stegWord.Length; i++)
{
pack[41 + i] = Convert.ToByte(_stegWord[i]);
}
}
if (!WinDivertMethods.WinDivertSend(_stegHandler, pack, packetLen, ref addr, IntPtr.Zero))
{
OnMessage(Resources.SendPacketError);
}
else
{
if (breakCount == 0)
{
_stegPacketCount--;
}
else
{
breakCount--;
}
}
}
WinDivertMethods.WinDivertClose(_stegHandler);
}
_stegPacket = false;
}
catch (Exception exp)
{
Console.WriteLine(Resources.ExceptionMessage, exp.Message);
}
}