Example #1
0
        static void Main(string[] args)
        {
            Device device = new Device("TUNTEST");

            device.setMediaStatusAsConnected();
            device.setTunMode("10.111.111.1", "255.0.0.0");

            var mtu = device.getMTU();

            logger.Debug("MTU: {0}", mtu);

            Tap = device.getStream();

            var udpForwarder = new UDPForwarder(Tap);
            var tcpForwarder = new TCPForwarder(Tap);

            object state = new int();

            WaitObject = new EventWaitHandle(false, EventResetMode.AutoReset);
            IAsyncResult res;

            while (true)
            {
                byte[] buf = new byte[mtu];
                BytesRead = Tap.Read(buf, 0, buf.Length);
                if (BytesRead <= 0)
                {
                    break;
                }
                logger.Debug("Read " + BytesRead.ToString());
                try
                {
                    var frame = IPFrame.Create(buf.Take(BytesRead).ToArray());
                    logger.Debug("Version: " + frame.Version);
                    logger.Debug("Protocol Type: " + frame.Protocol);
                    logger.Debug("Source Address: " + frame.SourceAddress.ToString());
                    logger.Debug("Dest Address: " + frame.DestinationAddress.ToString());

                    var parser = new ProtocolParser();
                    parser.ParseCompleteFrame(frame);

                    if (frame.EncapsulatedFrame.FrameType == FrameTypes.UDP)
                    {
                        udpForwarder.forwardFrame(frame);
                    }
                    else if (frame.EncapsulatedFrame.FrameType == FrameTypes.TCP)
                    {
                        tcpForwarder.forwardFrame(frame);
                    }
                }
                catch (Exception e)
                {
                    logger.Error(e);
                }

                //
                // Reverse IPv4 addresses and send back to tun
                //
                //for (int i = 0; i< 4; ++i)
                //{
                //    byte tmp = buf[12+i]; buf[12+i] = buf[16+i]; buf[16+i] = tmp;
                //}
                //res2 = Tap.BeginWrite(buf, 0, BytesRead, ar => {
                //    Tap.EndWrite(ar);
                //    WaitObject2.Set();
                //}, state2);
                //WaitObject2.WaitOne();
            }
        }