public void Send(MPLSPacket mplsp)
{
byte[] byteData = mplsp.GetBytes();
CSocket.BeginSend(byteData, 0, byteData.Length, 0,
new AsyncCallback(SendCallback), CSocket);
ManagementAgent.ReturnLog($"Port {PortNumber} Trying to send MPLS Packet: " + mplsp.MPLSInfo());
}
public void Start()
{
ConnectToCableClaud();
while (true)
{
try
{
var message = Receive(CSocket);
switch (message)
{
case "OK":
ManagementAgent.ReturnLog("Sent message.");
break;
case "NOTOK":
ManagementAgent.ReturnLog("Unable to send message.");
break;
default:
byte[] msg = Encoding.Default.GetBytes(message);
MPLSPacket mpls = new MPLSPacket(msg);
ManagementAgent.ReturnLog($"Port: {PortNumber}; Received MPLS Packet: " + mpls.MPLSInfo());
SwitchingFabric.SwapLabels(PortNumber, mpls);
break;
}
}
catch (Exception e)
{
}
}
}
public static void SwapLabels(int portNumber, MPLSPacket mplsp)
{
if (mplsp.TTL > 0)
{
mplsp.TTL -= 1;
int LabelIndex = 1;
while (true)
{
byte LastLabel = mplsp.Labels[mplsp.Labels.Count() - 1];
int mplsListIndex = MPLSFibTable.ReturnIndex(portNumber, LastLabel, LabelIndex);
if (mplsListIndex == -1)
{
ManagementAgent.ReturnLog("Unable to forward packet.");
break;
}
else
{
List <int> outputLabels = MPLSFibTable.MplsFibTable[mplsListIndex].OutputLabel;
if (outputLabels[0] == 0)
{
LabelIndex++;
mplsp.Labels.RemoveAt(mplsp.Labels.Count() - 1);
continue;
}
else
{
mplsp.Labels.RemoveAt(mplsp.Labels.Count() - 1);
foreach (int labels in outputLabels)
{
mplsp.Labels.Add(Convert.ToByte(labels));
}
IOPort exitPort = LabelSwitchingRouter.ReturnPort(MPLSFibTable.MplsFibTable[mplsListIndex].OutputPort);
if (exitPort != null)
{
exitPort.Send(mplsp);
}
else
{
ManagementAgent.ReturnLog("Unable to forward packet.");
}
break;
}
}
}
}
else
{
ManagementAgent.ReturnLog("TTL value equals 0. Packet disappeared.");
}
}
static void Main(string[] args)
{
Console.WriteLine();
// Invoke this sample with an arbitrary set of command line arguments.
string[] arguments = Environment.GetCommandLineArgs();
try
{
LSRConfig.LoadConfig(arguments[1]);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
Console.ReadLine();
Environment.ExitCode = 0;
}
ManagementAgent.ReturnLog($"Router {LSRConfig.LSRNAME} is working.");
LabelSwitchingRouter LSR = new LabelSwitchingRouter();
LSR.LoadData();
LSR.StartManagementAgent();
Console.ReadLine();
}
