public ManagementCenterConnection()
{
try {
TcpClient tcpClient = new TcpClient("localhost", centerPort);
stream = tcpClient.GetStream();
reader = new StreamReader(stream);
writer = new StreamWriter(stream);
connected = true;
GUIWindow.PrintLog("Connection with Management Center has been established");
//SendRegistrationRequest();
GUIWindow.PrintLog("Sent registration request to Management Center");
SendRegistrationRequest();
RecieveRegistrationInfo();
//ReceiveMPLSTable();
//new Thread(ReceiveMessages).Start();
lock (Program.waiterCloud) {
Monitor.Pulse(Program.waiterCloud);
}
//while(true) {
// ReceiveMPLSTable();
//}
} catch (SocketException se) {
GUIWindow.PrintLog("Connection with Management Center has NOT been established");
connected = false;
}
}
public GUIWindow()
{
InitializeComponent();
CreateRoutingTable();
instance = this;
lock (Program.waiterConfig) {
Monitor.Pulse(Program.waiterConfig);
}
}
public static readonly LinkedList <int> ports = new LinkedList <int>(); //ID|IP|PORT
public static void LoadConfig(string file, string id)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(file);
XmlElement root = doc.DocumentElement;
XmlNodeList routerNodesList = root.SelectNodes("/config/routers/router");
XmlNodeList controlCenterList = root.SelectNodes("/config/control-centers/control-center");
nodeID = Int32.Parse(id);
foreach (XmlNode node in routerNodesList)
{
if (nodeID == Int32.Parse(node.Attributes["id"].Value))
{
asID = Int32.Parse(node.Attributes["as-id"].Value);
ip = node.SelectSingleNode("router-ip").InnerText;
subnetworkRouter = Boolean.Parse(node.Attributes["subnetwork-router"].Value);
XmlNodeList routerPortsList = node.SelectNodes("router-ports/router-port");
foreach (XmlNode portNode in routerPortsList)
{
ports.AddLast(Int32.Parse(portNode.InnerText));
}
foreach (XmlNode n in controlCenterList)
{
if (Int32.Parse(n.Attributes["id"].Value) == asID)
{
ccPort = Int32.Parse(n.Attributes["listening-port"].Value);
break;
}
}
break;
}
}
String msg = "";
int iter = 0;
ushort[] tmpPorts = new ushort[ports.Count];
foreach (int i in ports)
{
msg = msg + "|" + i;
tmpPorts[iter] = (ushort)ports.ToArray()[iter];
iter++;
}
CloudConnection.ClientIP = ip + "/24";
CloudConnection.ClientPorts = tmpPorts;
CloudConnection.asID = asID;
CloudConnection.subnetworkRouter = subnetworkRouter;
GUIWindow.PrintLog("Config loaded: " + id + "|" + ip + msg);
GUIWindow.ChangeWindowName("Router" + nodeID);
GUIWindow.ChangeIP(ip);
}
public static void SendMessage(Frame frame)
{
if (connected)
{
byte[] bytes = SerializeObject(frame);
stream.Write(bytes, 0, bytes.Length);
}
else
{
GUIWindow.PrintLog("Connect with Cloud to send a message...");
}
}
private void ReceiveRoutingTable()
{
while (true)
{
try {
byte[] receivedBuffer = new byte[8192];
try {
stream.Read(receivedBuffer, 0, receivedBuffer.Length);
}
catch {
break;
}
Dictionary <int, int> routingTable = (Dictionary <int, int>)CloudConnection.DeserializeObject(receivedBuffer);
//foreach (int key in routingTable.Keys) {
// routingTable.TryGetValue(key, out int value);
// GUIWindow.PrintLog("ID: " + key + " port: " + value);
//}
foreach (int key in routingTable.Keys)
{
int val;
routingTable.TryGetValue(key, out val);
Program.routingTable.Add(new Tuple <int, int>(key, val));
GUIWindow.PrintLog("CC: Received MatrixConnection(" + key + ", " + val + ") from network's CC");
GUIWindow.PrintLog("CC: Sent MatrixConnectionResponse() to network's CC");
}
TimeSpan currentTime = DateTime.UtcNow - Process.GetCurrentProcess().StartTime.ToUniversalTime();
TimeSpan diff = currentTime - timeSpan;
timeSpan = currentTime;
//if (diff.TotalMilliseconds > 500)
LinkedList <string[]> rows = new LinkedList <string[]>();
foreach (int key in routingTable.Keys)
{
routingTable.TryGetValue(key, out int val);
rows.AddLast(new string[] { key.ToString(), val.ToString() });
}
GUIWindow.UpdateRoutingTable(rows);
}
catch (Exception ex) {
GUIWindow.PrintLog(ex.StackTrace);
}
}
}
static void Main(string[] args)
{
try {
args = Environment.GetCommandLineArgs();
new Thread(() => {
//Thread.Sleep(2000);
lock (waiterConfig) {
Monitor.Wait(Program.waiterConfig);
//String config = String.Concat(File.ReadAllLines("./../../../../sharedResources/tsst_config.xml"));
//ConfigLoader.LoadConfig(config, "1");
String config = String.Concat(File.ReadAllLines(args[1]));
ConfigLoader.LoadConfig(config, args[2]);
lock (Program.waiterManagement) {
Monitor.Pulse(Program.waiterManagement);
}
}
}).Start();
new Thread(() => {
//Thread.Sleep(2000);
lock (Program.waiterManagement) {
Monitor.Wait(Program.waiterManagement);
}
new ManagementCenterConnection();
new ControlCenterConnection();
}).Start();
new Thread(() => {
lock (Program.waiterCloud) {
Monitor.Wait(Program.waiterCloud);
}
cloudConnection = new CloudConnection();
}).Start();
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new GUIWindow());
}catch (Exception e) {
GUIWindow.PrintLog(e.StackTrace);
}
}
public CloudConnection()
{
try {
TcpClient tcpClient = new TcpClient("localhost", CloudPort);
stream = tcpClient.GetStream();
connected = true;
GUIWindow.PrintLog("Connection with Cloud has been established");
SendRegistrationRequest();
GUIWindow.PrintLog("Sent registration request to Cloud");
new Thread(ReceiveMessages).Start();
} catch (SocketException se) {
GUIWindow.PrintLog("Connection with Cloud has NOT been established");
connected = false;
}
}
private void RecieveRegistrationInfo()
{
try {
string msg = reader.ReadLine();
string[] parameters = msg.Split(':');
if (parameters[0].Equals("REGISTRATION") && parameters[1].Equals("OK"))
{
GUIWindow.PrintLog("Control Center accepted registration request");
}
else
{
GUIWindow.PrintLog("Control Center denied registration request");
}
} catch (IOException e) {
GUIWindow.PrintLog(e.Message);
}
}
public void ReceiveMessages()
{
while (true)
{
byte[] receivedBuffer = new byte[8192];
try {
stream.Read(receivedBuffer, 0, receivedBuffer.Length);
}
catch {
break;
}
Frame frame = (Frame)DeserializeObject(receivedBuffer);
GUIWindow.PrintLog("Received message addressed to " + frame.DestinationIP + " with Connection ID #" + frame.ConnectionID);
int outPort = 0;
List <int> ports = new List <int>();
foreach (Tuple <int, int> tuple in Program.routingTable)
{
if (tuple.Item1 == frame.ConnectionID)
{
ports.Add(tuple.Item2);
}
}
if (ports[0] == frame.RouterInPort)
{
outPort = ports[1];
}
else
{
outPort = ports[0];
}
GUIWindow.PrintLog("Redirecting message through port " + frame.SourcePort);
//GUIWindow.PrintLog(outPort.ToString());
frame.SourcePort = (ushort)outPort;
frame.SourceIP = ClientIP;
SendMessage(frame);
}
}
public ControlCenterConnection()
{
try {
TcpClient tcpClient = new TcpClient("localhost", centerPort);
stream = tcpClient.GetStream();
reader = new StreamReader(stream);
writer = new StreamWriter(stream);
connected = true;
GUIWindow.PrintLog("Connection with Control Center has been established");
GUIWindow.PrintLog("Sent registration request to Control Center");
SendRegistrationRequest();
RecieveRegistrationInfo();
SendKeepAlive();
ReceiveRoutingTable();
} catch (SocketException se) {
GUIWindow.PrintLog("Connection with Control Center has NOT been established");
GUIWindow.PrintLog(se.Message);
connected = false;
}
}
public void RecieveConfig()
{
try {
String msg = reader.ReadLine();
String[] parameters = msg.Split(':');
if (parameters[0].Equals("CONFIG"))
{
ClientIP = parameters[1];
ClientPorts = new ushort[parameters.Length - 3];
int iter = 0;
String ports = "";
for (int i = 2; i < parameters.Length - 1; i++)
{
ClientPorts[iter] = ushort.Parse(parameters[i]);
ports += "|" + ClientPorts[iter];
iter++;
}
CloudConnection.ClientIP = ClientIP + "/24";
CloudConnection.ClientPorts = ClientPorts;
int routerID = int.Parse(parameters[parameters.Length - 1]);
GUIWindow.ChangeWindowName("Router" + routerID);
GUIWindow.PrintLog("Config received: " + ClientIP + ports + " (" + "Router" + routerID + ")");
}
else
{
GUIWindow.PrintLog("Managment Center denied registration request");
}
} catch (IOException) {
}
}