public void Start()
{
ReturnLog("Managment agent start working.");
ConnectToManagementCenter();
while (true)
{
try
{
var message = Receive(CSocket);
var splittedMessage = message.Split(' ');
ReturnLog($"Received message from Management Center: {message}");
switch (splittedMessage[0])
{
case "ADDRECORD":
MPLSFibTable.AddElement(new MPLSFibRecord(
splittedMessage[1] + " " + splittedMessage[2] + " " + splittedMessage[3] + " " + splittedMessage[4] + " " + splittedMessage[5]));
ReturnLog($"Number of MPLSFibTable elements: {MPLSFibTable.MplsFibTable.Count}");
break;
case "REMOVERECORD":
MPLSFibTable.RemoveElement(new MPLSFibRecord(
splittedMessage[1] + " " + splittedMessage[2] + " " + splittedMessage[3] + " " + splittedMessage[4] + " " + splittedMessage[5]));
ReturnLog($"Number of MPLSFibTable elements: {MPLSFibTable.MplsFibTable.Count}");
break;
default:
ReturnLog("Received unknown command from Management Center");
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.");
}
}
