private byte[] Filter_PacketReceived(byte[] buffer, CapturedPacketArgs args)
{
NetPacketParser.EthernetPacket packet = new NetPacketParser.EthernetPacket(buffer);
var netPacketViewModel = new NetPacketViewModel(packet, _packetIndex++);
Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.High, () =>
{
NetPacketViewModels.Add(netPacketViewModel);
}).AsTask();
return(null);
}
private byte[] Filter_PacketReceived(byte[] buffer, CapturedPacketArgs args)
{
NetPacketViewModel netPacketViewModel = new();
for (int i = 0; i < buffer.Length; ++i)
{
netPacketViewModel.Content += NetPacketViewModel.HexTable[buffer[i]];
}
this.Dispatcher.Invoke(() =>
{
NetPacketViewModels.Add(netPacketViewModel);
}, DispatcherPriority.Render);
return(null);
}
private byte[] Filter_PacketReceived(byte[] buffer, CapturedPacketArgs args)
{
NetPacketViewModel netPacketViewModel = new NetPacketViewModel();
for (int i = 0; i < buffer.Length; ++i)
{
netPacketViewModel.Content += buffer[i].ToString("X4") + " ";
}
NetPacketViewModels.Add(netPacketViewModel);
byte[] modifiedBuffer = null;
switch (args.Layer)
{
case FilteringLayer.NetworkLayer:
IPAddress address;
{
switch (args.Direction)
{
case NetPacketDirection.Out:
address = IPAddress.Parse("192.168.1.104");
address.GetAddressBytes().CopyTo(buffer, 16);
modifiedBuffer = buffer;
break;
case NetPacketDirection.In:
address = IPAddress.Parse("22.22.22.22");
address.GetAddressBytes().CopyTo(buffer, 12);
buffer[10] = 0;
buffer[11] = 0;
var checkSumCalculateBytes = (buffer[0] & 0xf) * 4;
var checkSum = CalculateChecksum(buffer, checkSumCalculateBytes);
buffer[10] = (byte)((checkSum & 0xff00) >> 8);
buffer[11] = (byte)(checkSum & 0xff);
modifiedBuffer = buffer;
break;
}
}
break;
}
return(modifiedBuffer);
}