static void Main(string[] args)
{
var controller = new MockFrameController();
SetupScenario1(controller);
controller.OnSendFrame += (sender, e) =>
{
Console.WriteLine("Send frame on {0:x2}:", e.Frame.Data.GetSendIntf());
Console.WriteLine(e.Frame.Data.ToHexString());
};
// Run the Nat implementation
Transceiver.FrameController = controller;
controller.Start();
NAT.EntryPoint();
}
public PaxNatPacketProcessor(ulong?nf0_mac = null, ulong?nf1_mac = null, ulong?nf2_mac = null, ulong?nf3_mac = null,
ulong?nf0_next_hop_mac = null, ulong?nf1_next_hop_mac = null, ulong?nf2_next_hop_mac = null, ulong?nf3_next_hop_mac = null,
IPAddress nat_inside_ip = null, IPAddress nat_outside_ip = null,
ushort?tcp_start_port = null)
{
// Configure via ctor parameters
if (nf0_mac.HasValue)
{
NAT.nf0Mac = nf0_mac.Value;
}
if (nf1_mac.HasValue)
{
NAT.nf1Mac = nf1_mac.Value;
}
if (nf2_mac.HasValue)
{
NAT.nf2Mac = nf2_mac.Value;
}
if (nf3_mac.HasValue)
{
NAT.nf3Mac = nf3_mac.Value;
}
if (nf0_next_hop_mac.HasValue)
{
NAT.nf0NextHopMac = nf0_next_hop_mac.Value;
}
if (nf1_next_hop_mac.HasValue)
{
NAT.nf1NextHopMac = nf1_next_hop_mac.Value;
}
if (nf2_next_hop_mac.HasValue)
{
NAT.nf2NextHopMac = nf2_next_hop_mac.Value;
}
if (nf3_next_hop_mac.HasValue)
{
NAT.nf3NextHopMac = nf3_next_hop_mac.Value;
}
if (nat_inside_ip != null)
{
NAT.myInsideIP = ToUint(nat_inside_ip);
}
if (nat_outside_ip != null)
{
NAT.myOutsideIP = ToUint(nat_outside_ip);
}
if (tcp_start_port.HasValue)
{
NAT.nextPort = tcp_start_port.Value;
}
// Send frames on intf
var controller = new MockFrameController();
controller.OnSendFrame += (sender, e) =>
{
// NAT has sent frame - send on physical interface
#if DEBUG
Console.WriteLine("TX packet");
#endif
// Check which output port
int out_port = e.Frame.Data.GetOutputPortNumber();
#if DEBUG
Console.WriteLine("Out port: {0} SendIntf: 0x{1:x2}", out_port, e.Frame.Data.GetSendIntf());
#endif
if (out_port >= 0)
{
// Swap endianness
//e.Frame.SwapTdataEndianness();
#if DEBUG
// Print tdata
Console.WriteLine("tdata");
Console.WriteLine("======");
for (int i = 0; i < e.Frame.Data.tdata.Length; i++)
{
Console.WriteLine("<><><>> {0:x16}", e.Frame.Data.tdata[i]);
if (e.Frame.Data.tlast[i])
{
break;
}
}
Console.WriteLine("<><><>> tuser_low {0:x}", e.Frame.Data.tuser_low[0]);
Console.WriteLine();
#endif
// Copy data to byte array
int length = e.Frame.Data.GetKeepLength(); // Length in bytes
byte[] data = new byte[length];
Buffer.BlockCopy(e.Frame.Data.tdata, 0, data, 0, length); // FIXME not great for performance to copy twice :/
#if DEBUG
// Update checksums for mininet testing.
var pkt = Packet.ParsePacket(LinkLayers.Ethernet, data);
if (pkt.PayloadPacket is IpPacket)
{
var ip = (IPv4Packet)pkt.PayloadPacket;
if (ip.Checksum != ip.CalculateIPChecksum())
{
Console.WriteLine("! IP Checksum incorrect ({0:x4} != {1:x4})", ip.Checksum, ip.CalculateIPChecksum());
}
}
if (pkt.PayloadPacket.PayloadPacket is TcpPacket)
{
var tcp = (TcpPacket)pkt.PayloadPacket.PayloadPacket;
if (tcp.Checksum != tcp.CalculateTCPChecksum())
{
Console.WriteLine("! TCP Checksum incorrect ({0:x4} != {1:x4})", tcp.Checksum, tcp.CalculateTCPChecksum());
}
}
Console.WriteLine("Sending packet length {0}", length);
#endif
// Send the frame
var device = Pax.PaxConfig.deviceMap[out_port];
device.SendPacket(data);
}
};
NAT.FrameController = controller;
controller.Start();
}