private void SendPacketsToPorts(ushort from, ushort to, PacketCommunicator communicator)
{
const int PacketsBufferSize = 102400;
using (PacketSendBuffer buffer = new PacketSendBuffer(PacketsBufferSize))
{
for (ushort port = from; port <= to; port++)
{
Packet packet = TcpPacketFactory.CreateSynPacketFor(this.options, port);
buffer.Enqueue(packet);
}
communicator.Transmit(buffer, true);
}
}
private void ReceivePackets(object arg)
{
CancellationToken ct = (CancellationToken)arg;
using (PacketCommunicator communicator = options.Device.Open(65535, PacketDeviceOpenAttributes.Promiscuous | PacketDeviceOpenAttributes.NoCaptureLocal, 100))
{
communicator.SetFilter("tcp and src " + options.TargetIP + " and dst " + options.SourceIP);
while (true)
{
if (ct.IsCancellationRequested)
{
return;
}
Packet responce;
PacketCommunicatorReceiveResult result = communicator.ReceivePacket(out responce);
if (result == PacketCommunicatorReceiveResult.Ok)
{
PortInfo info = ParsePortInfo(responce);
Packet rstPacket = TcpPacketFactory.CreateRstPacketFor(this.options, info.Number);
communicator.SendPacket(rstPacket);
if (scanResults.Add(info))
{
Console.WriteLine(info.ToString());
}
int totalPorts = options.EndPort - options.StartPort;
if (scanResults.Count == totalPorts)
{
break;
}
}
}
}
}
