public void LocalTopologyIn(bool delete, SNP localTopologyUpdate)
{
Link link = links.Find(x => x.FirstSNPP.Address == localTopologyUpdate.Address || x.SecondSNPP.Address == localTopologyUpdate.Address);
SNPP snpp = null;
if (link.FirstSNPP.Address == localTopologyUpdate.Address)
{
snpp = link.FirstSNPP;
}
else
{
snpp = link.SecondSNPP;
}
if (delete)
{
snpp.Capacity += localTopologyUpdate.OccupiedCapacity;
LogClass.GreenLog("[RC]Received Topology: Added " + localTopologyUpdate.OccupiedCapacity + "Mbit/s to SNPP " + localTopologyUpdate.Address + ".");
}
else
{
snpp.Capacity -= localTopologyUpdate.OccupiedCapacity;
LogClass.MagentaLog("[RC]Received Topology: Removed " + localTopologyUpdate.OccupiedCapacity + "Mbit/s from SNPP " + localTopologyUpdate.Address + ".");
}
LogClass.WhiteLog("[RC] " + snpp.Capacity + "Mbit/s left on " + snpp.Address);
}
public MPLSPacket ProcessPacket(MPLSPacket mplsPacket)
{
LogClass.WhiteLog("MPLSPacket added to inPort " + portNumber);
Program.count++;
ChangeLabel(mplsPacket);
return(mplsPacket);
}
public void DisplayFIB(int inPortNumber)
{
foreach (Entry entry in routingTable)
{
LogClass.WhiteLog("[FIB] InPort " + entry.InPort + " InLabel " + entry.InLabel + " OutPort " + entry.OutPort + " OutLabel " + entry.OutLabel + " DestinationAddress " + entry.IPAddress);
}
}
public void createStringBasedPath(string path) //dodaje sciezke do listy scieżek na podstawie stringa z ciągiem wierzchołków
{
Path createdPath = null;
try
{
if (!String.IsNullOrEmpty(path))
{
int b = 0;
string[] nbsVertices = path.Split(' ');
createdPath = new Path(Int32.Parse(nbsVertices[0]) + 1, Int32.Parse(nbsVertices[nbsVertices.GetLength(0) - 1]) + 1);
PathList.Add(createdPath);
for (int a = 0; a < nbsVertices.GetLength(0) - 1; a++)
{
b = a + 1;
PathList[PathList.Count - 1].edgesInPath.Add(getEdge(Int32.Parse(nbsVertices[a]) + 1, Int32.Parse(nbsVertices[b]) + 1, EdgeList));
}
}
}
catch (System.FormatException e)
{
LogClass.WhiteLog("[RC] Can't find path with this capacity");
PathList.Remove(createdPath);
}
}
private void OnTimedEvent(object source, ElapsedEventArgs e)
{
int portNumber;
sendingTimer.Stop();
foreach (OutPort outPort in outPorts)
{
if (outPort.GetBufferLength() > 0)
{
portNumber = outPort.GetPortNumber();
if (outPort.SendingToClient())
{
while (outPort.GetBufferLength() > 0)
{
Packet bufferObject = outPort.PrepareIPPacketFromBuffer(0);
OutputManager.sendIPPacket(bufferObject, outPort, portNumber);
LogClass.WhiteLog("Sending IPPacket from outPort " + portNumber);
}
}
else
{
MPLSPack bufferContent = outPort.PrepareMPLSPackFromBuffer();
OutputManager.sendMPLSPack(bufferContent, portNumber, outPort);
LogClass.WhiteLog("Sending MPLSPack from outPort " + portNumber);
}
}
}
sendingTimer.Start();
}
public List <SNPP> route(IPAddress sourceAddress, IPAddress destinationAddress, int capacity)
{
TranslateSubnetworkData();
refreshSubnetwork(capacity);
List <SNPP> path = new List <SNPP>();
List <Edge> edges = new List <Edge>();
List <SNPP> translated = new List <SNPP>();
SNPP sourceSNPP = findSNPPbyAddress(sourceAddress);
SNPP destinationSNPP = findSNPPbyAddress(destinationAddress);
subnetwork.algFloyda();
SubnetworkAddress source = findSubnetworkWhereIsContained(sourceAddress);
SubnetworkAddress destination = findSubnetworkWhereIsContained(destinationAddress);
int sourceVertexId = subnetworkToVertexId[source];
int destinationVertexId = subnetworkToVertexId[destination];
try
{
if (!(sourceVertexId == destinationVertexId))
{
edges = subnetwork.getPath(sourceVertexId, destinationVertexId);
translated = translateEdgesToSNPPs(edges);
}
}
catch (FormatException e)
{
LogClass.WhiteLog("[RC] Can't find path with this capacity");
return(new List <SNPP>());
}
return(translated);
}
private void ChangeLabel(MPLSPacket packet)
{
int oldPort = packet.DestinationPort;
int oldLabel = packet.GetLabelFromStack();
int[] FIBOutput = fib.GetOutput(oldPort, oldLabel, packet.ipPacket.destinationAddress);
int port = FIBOutput[0];
int label = FIBOutput[1];
packet.DestinationPort = port;
LogClass.WhiteLog("MPLSPacket from inPort " + oldPort + ": old label = " + oldLabel);
if (label != 0)
{
packet.PutLabelOnStack(label);
Console.WriteLine(" | new label = " + label);
}
else
{
Console.WriteLine(" | old label removed");
}
if (fib.LookForLabelToBeAdded(oldPort, oldLabel) != 0)
{
int addingLabel = fib.LookForLabelToBeAdded(oldPort, oldLabel);
packet.PutLabelOnStack(fib.LookForLabelToBeAdded(oldPort, oldLabel));
LogClass.Log("Starting new tunnel with label " + addingLabel);
ChangeLabel(packet);
}
else if (fib.LookForLabelToBeRemoved(oldPort, oldLabel) != 0)
{
LogClass.Log("Ending tunnel");
ChangeLabel(packet);
}
}
private static Thread InitListenThread()
{
LogClass.WhiteLog("LISTENING FOR SUBNETWORKS");
var t = new Thread(() => RealStart());
t.IsBackground = true;
t.Start();
return(t);
}
private MPLSPacket SetLabelAndPort(Packet packet, int destinationPort)
{
//Console.WriteLine("destination: " + packet.destinationAddress);
int label = fib.ExchangeIpAddressForLabel(packet.destinationAddress, destinationPort);
LogClass.WhiteLog("Converting IPPacket to MPLSPacket with label " + label);
MPLSPacket mplspacket = new MPLSPacket(packet, label);
mplspacket.DestinationPort = destinationPort;
return(mplspacket);
}
public void AddEntry(int inport, int inlabel, int outport, int outlabel, int newlabel, int removelabel, String address)
{
if (!routingTable.Contains(FindInputDestination(inport, inlabel, address)))
{
routingTable.Add(new Entry(inport, inlabel, outport, outlabel, newlabel, removelabel, address));
LogClass.GreenLog("Added new entry in FIB: inport " + inport + " inlabel " + inlabel + " outport " + outport + " outlabel " + outlabel + " | destinationAddress: " + address);
}
else
{
LogClass.WhiteLog("Entry with such input parameters already exists. Delete it before adding new one.");
}
}
public ConnectionController()
{
NetworkAddress = Config.getProperty("NetworkAddress");
ParentNetworkAddress = Config.getProperty("ParentNetworkAddress");
SubnetworkAddress = Config.getProperty("SubnetworkAddress");
SubnetworkMask = Config.getProperty("SubnetworkMask");
LogClass.WhiteLog("INITIALIZATION");
OtherDomainSNPPAddressTranslation = new Dictionary <SubnetworkAddress, List <Tuple <IPAddress, IPAddress> > >();
existingConnections = new Dictionary <string[], List <SNP> >();
ContainedSubnetworksAddresses = new List <SubnetworkAddress>();
LoadContainedSubnetworks();
}
public void LoadContainedSubnetworks()
{
LogClass.WhiteLog("Loading contained subnetworks:");
string fileName = Config.getProperty("ContainedSubnetworks");
string[] loadedFile = LoadFile(fileName);
string[] subnetworkParams = null;
foreach (string str in loadedFile)
{
subnetworkParams = str.Split(PARAM_SEPARATOR);
ContainedSubnetworksAddresses.Add(new SubnetworkAddress(subnetworkParams[ADDRESS_POSITION], subnetworkParams[MASK_POSITION]));
Console.WriteLine(str);
}
}
public void RemoveEntry(int inport, int inlabel, int outport, int outlabel)
{
Entry entryToBeDeleted = FindToDelete(inport, inlabel, outport, outlabel);
if (entryToBeDeleted != null)
{
routingTable.Remove(entryToBeDeleted);
LogClass.MagentaLog("Deleted entry from FIB: inport " + entryToBeDeleted.InPort + " inlabel " + entryToBeDeleted.InLabel +
" outport " + entryToBeDeleted.OutPort + " outlabel " + entryToBeDeleted.OutLabel + " removed from FIB.");
}
else
{
LogClass.WhiteLog("Entry with such input parameters doesn't exist in this FIB.");
}
}
public ThreadSafeList <MPLSPacket> ProcessPack(MPLSPack mplsPack, int destPort)
{
LogClass.WhiteLog("MPLSPack added to inPort " + destPort);
ThreadSafeList <MPLSPacket> packets = UnpackPack(mplsPack);
LogClass.WhiteLog("MPLSPack unpacked, comutating MPLSPackets");
foreach (MPLSPacket packet in packets)
{
Program.count++;
packet.DestinationPort = destPort;
}
packets.ForEach(ChangeLabel);
return(packets);
}
private void Commutate(MPLSPacket packet)
{
int packetOutPort = packet.DestinationPort;
int portNumber;
foreach (OutPort port in outPorts)
{
portNumber = port.GetPortNumber();
if (packetOutPort == portNumber)
{
LogClass.WhiteLog("Adding MPLSPacket to buffer of OutPort " + portNumber);
port.AddToBuffer(packet);
return;
}
}
}
private static void LoadPortsToAnotherDomains()
{
string fileName = Config.getProperty("realPortsToDomains");
string[] loadedFile = LoadFile(fileName);
string[] parameters = null;
LogClass.WhiteLog("Loaded ports to another domains.");
foreach (string str in loadedFile)
{
if (str[0] != '#')
{
parameters = str.Split(PARAM_SEPARATOR);
SocketsToAnotherDomains.Add(new SubnetworkAddress(parameters[SUBNETWORK_ADDRESS_POSITION], parameters[SUBNETWORK_MASK_POSITION]), Int32.Parse(parameters[PORT_POSITION]));
}
}
}
public LabelSwitchingRouter()
{
fib = new FIB();
numberOfInputModules = GetInputModulesNumber();
numberOfOutputModules = GetOutputModulesNumber();
inPorts = new List <InPort>();
outPorts = new List <OutPort>();
sendingTimer = new Timer();
sendingTimer.Interval = Config.getIntegerProperty("SendingInterval");
sendingTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
sendingTimer.Enabled = true;
//agent = new RouterAgent(fib, inPorts); //łączność z NMSem, teraz niepotrzebna
CC = new ConnectionController(fib, inPorts);
CreateInPorts(numberOfInputModules);
CreateOutPorts(numberOfOutputModules);
LogClass.WhiteLog("Created LSR");
ParentSubnetworkConnector.Init(CC);
}
private bool ConnectionRequestOut(SNP pathBegin, SNP pathEnd)
{
LogClass.WhiteLog("[CC] Sending ConnectionRequestOut between ports: " + pathBegin.Address + " and " + pathEnd.Address);
//wysyla do cc poziom niżej wiadomosc connection request
IPAddress subnetworkAddress = null;
IPAddress subnetworkAddressMask = null;
foreach (SubnetworkAddress sub in ContainedSubnetworksAddresses)
{
if (IPAddressExtensions.IsInSameSubnet(sub.subnetAddress, IPAddress.Parse(pathBegin.Address), sub.subnetMask))
{
subnetworkAddress = sub.subnetAddress;
subnetworkAddressMask = sub.subnetMask;
}
}
SubnetworkAddress subnetAddress = new SubnetworkAddress(subnetworkAddress.ToString(), subnetworkAddressMask.ToString());
return(SubnetworkServer.SendConnectionRequest(pathBegin, pathEnd, subnetAddress));
}
public RouterAgent(FIB fib, List <InPort> inPorts)
{
this.fib = fib;
inCommand = new Command();
outCommand = new Command();
this.inPorts = inPorts;
_interface = Config.getProperty("NMSInterface");
outport = Config.getIntegerProperty("NMSListenPort");
init();
LogClass.WhiteLog("Established connection with NMS");
SendSingleCommand(_interface, outport);
LogClass.WhiteLog("Sent hello message");
inputSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPAddress ipAdd = IPAddress.Parse("127.0.0.1");
IPEndPoint remoteEP = new IPEndPoint(ipAdd, outport);
inputSocket.Bind(remoteEP);
Listen();
}
// % % % % % % % % % % % % % % % % % % % % % % % % % //
// %%%%%%%%%%%%%%%%% GŁOWNA METODA %%%%%%%%%%%%%%%%% //
// % % % % % % % % % % % % % % % % % % % % % % % % % //
public bool ConnectionRequestFromNCC(string pathBegin, string pathEnd, int capacity)
{
string PathEndAddressFromDifferentDomain = null;
string[] existingConnKey = new string[] { pathBegin, pathEnd };
//Lista SNP dla tworzonego aktualnie polaczenia
List <SNP> SNPList = new List <SNP>();
//zakladamy, ze adres poczatkowy zawsze jest w naszej domenie, jezeli dostalismy requesta od NCC
//dodaj SNP z labelem 0 dla poczatku sciezki
SNPList.Add(new SNP(0, pathBegin, capacity, pathBegin, pathEnd));
//sprawdzamy, czy adres koncowy jest w naszej domenie
if (!IPAddressExtensions.IsInSameSubnet(IPAddress.Parse(pathEnd), IPAddress.Parse(SubnetworkAddress), IPAddress.Parse(SubnetworkMask)))
{
PathEndAddressFromDifferentDomain = pathEnd;
//sprawdza, czy adres docelowy jest w innej podsieci i podmienia
foreach (SubnetworkAddress domainAddress in OtherDomainSNPPAddressTranslation.Keys)
{
if (!IPAddressExtensions.IsInSameSubnet(IPAddress.Parse(pathEnd), domainAddress.subnetAddress, domainAddress.subnetMask))
{
Random random = new Random();
List <Tuple <IPAddress, IPAddress> > translationsList = OtherDomainSNPPAddressTranslation[domainAddress];
Tuple <IPAddress, IPAddress> foundTranslation = translationsList[random.Next(translationsList.Count)];
IPAddress translatedAddress = foundTranslation.Item1;
pathEnd = translatedAddress.ToString();
}
}
}
LogClass.WhiteLog("[CC] RouteTableQuery called between: " + pathBegin + " and: " + pathEnd);
List <SNPP> SNPPList = RouteTableQuery(pathBegin, pathEnd, capacity);
if (SNPPList.Count > 0)
{
//dodaj SNP z labelem 0 dla konca sciezki
if (PathEndAddressFromDifferentDomain == null)
{
SNPList.Add(new SNP(0, pathEnd, capacity, pathBegin, pathEnd));
}
else
{
SNPP fakeSNPP = new SNPP(pathEnd, 0);
SNPPList.Add(fakeSNPP);
SNPPList.Add(fakeSNPP);
}
for (int index = 0; index < SNPPList.Count; index += 2)
{
SNPP SNPPpathBegin = SNPPList[index];
SNPP SNPPpathEnd = SNPPList[index + 1];
Tuple <SNP, SNP> SNPpair = LinkConnectionRequest(SNPPpathBegin, SNPPpathEnd, capacity);
if (SNPpair.Item1 != SNPpair.Item2)
{
SNPList.Add(SNPpair.Item1);
SNPList.Add(SNPpair.Item2);
}
else
{
SNPList.Add(SNPpair.Item1);
}
}
//Zapamietaj SNPlist z polaczeniem mdzy takimi adresami
existingConnections.Add(existingConnKey, SNPList);
//Wysłanie ConnectionRequesta do podsieci, jeżeli na liscie SNP zajdą się 2 adresy brzegowe tej podsieci
for (int index = 0; index < SNPList.Count - 1; index++)
{
SNP SNPpathBegin = SNPList[index];
for (int jndex = index + 1; jndex < SNPList.Count; jndex++)
{
SNP SNPpathEnd = SNPList[jndex];
if (BelongsToSubnetwork(SNPpathBegin, SNPpathEnd))
{
if (ConnectionRequestOut(SNPpathBegin, SNPpathEnd))
{
LogClass.Log("Subnetwork Connection set properly.");
}
else
{
LogClass.Log("Epic fail.");
return(false);
}
}
}
}
//Wyslanie PeerCoordination jezeli zestawiane polaczenie przebiega przez 2 domeny
if (PathEndAddressFromDifferentDomain != null)
{
//TODO: sprawdz, czy ktorys z SNP ma adres SNPP brzegowego tej domeny
SNP lastSNPinThisDomain = null;
foreach (SNP snp in SNPList)
{
foreach (List <Tuple <IPAddress, IPAddress> > list in OtherDomainSNPPAddressTranslation.Values)
{
foreach (Tuple <IPAddress, IPAddress> tuple in list)
{
if (tuple.Item1.ToString() == snp.Address)
{
lastSNPinThisDomain = snp;
lastSNPinThisDomain.PathBegin = pathBegin;
lastSNPinThisDomain.PathEnd = PathEndAddressFromDifferentDomain;
}
}
}
}
if (PeerCoordinationOut(lastSNPinThisDomain, PathEndAddressFromDifferentDomain))
{
LogClass.Log("PeerCoordination OK.");
}
else
{
LogClass.Log("PeerCoordination FAIL.");
};
}
}
if (SNPPList.Count > 0)
{
return(true); //Jesli polaczenie zestawiono poprawnie
}
else
{
return(false);
}
}
private bool PeerCoordinationOut(SNP SNPpathBegin, string AddressPathEnd)
{
LogClass.WhiteLog("[CC] Sending peerCoordination: " + SNPpathBegin.Address + " to " + AddressPathEnd);
return(SubnetworkServer.SendPeerCoordination(SNPpathBegin, AddressPathEnd, true));
}
public bool PeerCoordinationIn(SNP pathBegin, string pathEnd)
{
LogClass.Log("[DEBUG] incoming peercoordination from" + pathBegin.Address + " to " + pathEnd);
string[] existingConnKey = new string[] { pathBegin.Address, pathEnd };
string beginAddressForDict = pathBegin.Address;
//Lista SNP dla tworzonego aktualnie polaczenia
List <SNP> SNPList = new List <SNP>();
//sprawdza, z ktorej domeny przyszedl SNP i podmienia jego adres na adres swojego SNPP brzegowego
foreach (SubnetworkAddress domainAddress in OtherDomainSNPPAddressTranslation.Keys)
{
if (IPAddressExtensions.IsInSameSubnet(IPAddress.Parse(pathBegin.Address), domainAddress.subnetAddress, domainAddress.subnetMask))
{
Tuple <IPAddress, IPAddress> foundTranslation = OtherDomainSNPPAddressTranslation[domainAddress].Find(x => x.Item1.ToString() == pathBegin.Address);
IPAddress translatedAddress = foundTranslation.Item2;
Console.WriteLine("TRANSALATED FROM" + pathBegin.Address + " TO " + translatedAddress.ToString());
pathBegin.Address = translatedAddress.ToString();
}
}
Console.WriteLine("DEFENITELY TRANSALATED TO " + pathBegin.Address);
//przepustowosc bierzemy z przekazanego SNP
SNPList.Add(new SNP(pathBegin.Label, pathBegin.Address, pathBegin.OccupiedCapacity, null, null));
SNPList.Add(new SNP(0, pathEnd, pathBegin.OccupiedCapacity, pathBegin.PathBegin, pathBegin.PathEnd));
//Zapamietaj SNPlist z polaczeniem mdzy takimi adresami
existingConnections.Add(existingConnKey, SNPList);
List <SNPP> SNPPList = RouteTableQuery(pathBegin.Address, pathEnd, pathBegin.OccupiedCapacity);
for (int index = 0; index < SNPPList.Count; index += 2)
{
SNPP SNPPpathBegin = SNPPList[index];
SNPP SNPPpathEnd = SNPPList[index + 1];
Tuple <SNP, SNP> SNPpair = LinkConnectionRequest(SNPPpathBegin, SNPPpathEnd, pathBegin.OccupiedCapacity);
SNPList.Add(SNPpair.Item1);
SNPList.Add(SNPpair.Item2);
}
//Wysłanie ConnectionRequesta do podsieci, jeżeli na liscie SNP zajdą się 2 adresy brzegowe tej podsieci
List <SNP> connected = new List <SNP>();
for (int index = 0; index < SNPList.Count - 1; index++)
{
SNP SNPpathBegin = SNPList[index];
for (int jndex = index + 1; jndex < SNPList.Count; jndex++)
{
SNP SNPpathEnd = SNPList[jndex];
if (BelongsToSubnetwork(SNPpathBegin, SNPpathEnd))
{
LogClass.WhiteLog("[DEBUG] Sending ConnectionRequest between" + SNPpathBegin.Address + SNPpathEnd.Deleting + "and" + SNPpathEnd.Address + SNPpathBegin.Deleting);
if (ConnectionRequestOut(SNPpathBegin, SNPpathEnd))
{
connected.Add(SNPpathBegin);
connected.Add(SNPpathEnd);
LogClass.Log("Subnetwork Connection set properly.");
}
else
{
connected.ForEach(x => x.Deleting = true);
for (int i = 0; i < connected.Count; i += 2)
{
DeleteLinkConnectionRequest(connected.ElementAt(i), connected.ElementAt(i + 1));
}
for (int i = 0; i < connected.Count; i += 2)
{
ConnectionRequestOut(connected.ElementAt(i), connected.ElementAt(i + 1));
LogClass.WhiteLog("[DEBUG] Sending DeleteConnectionRequest between" + SNPpathBegin.Address + SNPpathEnd.Deleting + "and" + SNPpathEnd.Address + SNPpathBegin.Deleting);
}
SubnetworkServer.callIgnoreLinkInRC(SNPpathBegin);
SubnetworkServer.callIgnoreLinkInRC(SNPpathEnd);
LogClass.Log("Epic fail.");
return(false);
}
}
}
}
return(true); //Jesli polaczenie zestawiono poprawnie
}
private bool DeletePeerCoordinationOut(SNP lastSNPinThisDomain, string pathEndAddressFromDifferentDomain)
{
LogClass.WhiteLog("[CC] Sending deletePeerCoordination: " + lastSNPinThisDomain.Address + " to " + pathEndAddressFromDifferentDomain);
return(SubnetworkServer.SendPeerCoordination(lastSNPinThisDomain, pathEndAddressFromDifferentDomain, false));
}