public void SendingNodeIsUpMessage(Socket socketout, string addressIP, short WhichRouter)
{
IPEndPoint ippoint = socketout.RemoteEndPoint as IPEndPoint;
Console.WriteLine(ippoint.Address.ToString());
try
{
lock (_syncRoot)
{
// wiadomośc przesyłana do komunikacji z NMSem
string message = "Network node is up";
short length = (Int16)message.Length;
NMSPackage nmspackage = new NMSPackage(addressIP, WhichRouter, message, length);
byte[] bytemessage = nmspackage.toBytes();
// Send the data through the socket.
socketout.Send(bytemessage);
}
}
catch (Exception)
{
Console.WriteLine("Lack connection with NMS");
}
}
public void sendingMessageCommunication(string address, string communication, Socket socket)
{
try
{
short length = (Int16)communication.Length;
NMSPackage nmspackage = new NMSPackage(address, communication, length);
byte[] bytemessage = nmspackage.toBytes();
// Send the data through the socket.
socket.Send(bytemessage);
}
catch (Exception)
{
Console.WriteLine("Lack of connection with NMS");
}
}
public void SendingKeepAliveMessage(string address, Socket socketout)
{
Task.Run(async() =>
{
try
{
while (true)
{
if (!socketout.Connected)
{
Console.WriteLine("Lack connection NMS");
break;
}
string keep_alive_message = "Keep Alive";
short length = (Int16)keep_alive_message.Length;
NMSPackage nmspackage = new NMSPackage(address, keep_alive_message, length);
byte[] bytemessage = nmspackage.toBytes();
// Send the data through the socket.
socketout.Send(bytemessage);
var delay = await Task.Run(async() =>
{
Stopwatch sw = Stopwatch.StartNew();
await Task.Delay(2000);
sw.Stop();
return(sw.ElapsedMilliseconds);
});
}
}
catch (Exception err)
{
Console.WriteLine("Lack of connection with NMS");
}
});
}
public void CreateConnect(string addressConnectIP, string key, CancellationToken cancellationToken = default(CancellationToken))
{
Socket socket = null;
Socket listenerAgent = null;
Socket agentSending = null;
try
{
byte[] bytes = new Byte[128];
string numberOfRouter = key.Substring(0, 1);
//Sklejenie czesci wspolnej klucza dla socketu OUT oraz indeksu
string settingsString = numberOfRouter + "Agent";
IPAddress ipAddress =
ipAddress = IPAddress.Parse(OperationConfiguration.getSetting(settingsString, mySettings));
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, 11000);
// Create a TCP/IP socket.
listenerAgent = new Socket(ipAddress.AddressFamily,
SocketType.Stream, ProtocolType.Tcp);
if (!listenerAgent.IsBound)
{
//zabindowanie na sokecie punktu koncowego
listenerAgent.Bind(localEndPoint);
listenerAgent.Listen(100);
}
int milliseconds = 100;
//Nasluchujemy bez przerwy
while (Last)
{
if (Listening)
{
//Dodanie socketu do listy socketow OUT
agentSending = sS.ConnectToEndPoint(addressConnectIP);
Thread.Sleep(milliseconds);
SendingNodeIsUpMessage(agentSending, OperationConfiguration.getSetting(settingsString, mySettings), Int16.Parse(numberOfRouter));
//oczekiwanie na polaczenie
socket = listenerAgent.Accept();
SendingKeepAliveMessage(OperationConfiguration.getSetting(settingsString, mySettings), agentSending);
Listening = false;
/* LingerOption myOpts = new LingerOption(true, 1);
* socketClient.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Linger, myOpts);
* socketClient.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.DontLinger, false);
* socketClient.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);*/
Console.WriteLine("Connect on port " + NetworkNode.takingAddresListenerSocket(socket));
byte[] msg;
if (socket.Connected)
{
//Oczekiwanie w petli na przyjscie danych
while (true)
{
string from = string.Empty;
//Odebranie tablicy bajtow na obslugiwanym w watku sluchaczu
msg = sl.ProcessRecivedBytes3(socket);
NMSPackage package = new NMSPackage();
string usableMessage = NMSPackage.extractUsableMessage(msg, NMSPackage.extractUsableInfoLength(msg));
Console.WriteLine(usableMessage);
fillingTable(usableMessage, agentSending, settingsString);
// Package.extractHowManyPackages(msg);
// listByte.Add(msg);
//Wykonuje jezeli nadal zestawione jest polaczenie
if (msg == null)
{
//Rozpoczynamy proces nowego polaczenia
break;
}
}
}
}
ConsoleKeyInfo cki;
while (true)
{
cki = Console.ReadKey();
if (cki.Key == ConsoleKey.Escape)
{
break;
}
}
}
}
catch (SocketException se)
{
Console.WriteLine($"Socket Exception: {se}");
}
finally
{
// StopListening();
}
if (socket == null)
{
}
}
/// <summary>
/// funkcja obsługująca przychodzącą wiadomość
/// </summary>
/// <param name="listener"></param>
private void ReceivedMessage(Socket listener)
{
string usableMessage = "";
while (true)
{
// wyczyszczenie paczki przed jej wysłaniem oraz przed ponownym wysyłaniem
usableMessage = string.Empty;
//przypisywanie do paczki wiadomości przesłanej przez klienta, w tym przypadku przez agenta
byte[] nmspackage = new byte[64];
// tylko jeden wątek moze wykonywac ten kod w danym czasie
// lock (_syncRoot)
// {
nmspackage = ls.ProcessRecivedByteMessage(listener);
// }
// wykonuje się tylko wtedy jeśli agent nie jest podłączony
if (!listener.Connected)
{
// pobranie indeksu socketu z listy soecketów
int index = listening_socket.IndexOf(listener);
UpdateListBoxReceived("Network Node" + getIPAddressRemote(sends_socket.ElementAt(index)) + " is disconnected");
// rozłączanie obu socketów
listener.Disconnect(true);
//send.Disconnect(true);
//usuwanie socketów, adresów z list by przy ponownym połączeniu dodawać je na ponownie
listening_socket.RemoveAt(index);
sends_socket.RemoveAt(index);
routers_IP.RemoveAt(index);
// wyświetlanie pobranego adresu IP z list podłączonych agentów
_Application.comboBoxRouters.Invoke(new Action(delegate()
{
comboBoxRouters.Items.RemoveAt(index);
}));
break;
}
// wykonuje się tylko wtedy jeśli agent jest podłączony
else
{
string sourceip;
//tylko jesli paczka nie jest nullem
if (nmspackage != null)
{
usableMessage = NMSPackage.extractUsableMessage(nmspackage, NMSPackage.extractUsableInfoLength(nmspackage));
//tylko w przypadku pierwszej wiadomości od danego agenta
if (usableMessage == "Network node is up")
{
sourceip = NMSPackage.exctractSourceIP(nmspackage).ToString();
//jesli lista z adresami IP routerów nie zawiera danego IP to je dodaje a następnie wyśwuietlam komunikat
if (!routers_IP.Contains(sourceip))
{
routers_IP.Add(sourceip);
UpdateListBoxReceived("Network Node: " + sourceip + " is up");
UpdateListBoxReceived(listening_socket.Count.ToString());
}
//tworze połączenie z socketem routera, który wysłał do mnie wiadomość
send = sS.ConnectToEndPoint(NMSPackage.exctractSourceIP(nmspackage).ToString());
// a następnie dodaje ten socket do listy socketów, by potem móc z nich korzystać
sends_socket.Add(send);
short numberOfRouter = NMSPackage.extractNumberOfRouterNumber(nmspackage);
List <string> configurationRouter = ReadingFromFile(paths.ElementAt(numberOfRouter - 1));
foreach (var line in configurationRouter)
{
short length = (Int16)line.Length;
NMSPackage tablePackage = new NMSPackage(interfaces.ElementAt(numberOfRouter - 1), line, length);
byte[] tablePackageInBytes = tablePackage.toBytes();
send.Send(tablePackageInBytes);
Task.Delay(10);
}
/* z kazdą wiadomością "Network node is up" dodaje IP routera do checkboca w celu mozliwości wybrania
* docelwoego punktu komunikacji */
_Application.comboBoxRouters.Invoke(new Action(delegate()
{
_Application.comboBoxRouters.Items.Add(sourceip);
}));
}
//jesli wiadmośc keep alive
else if (usableMessage == "Keep Alive")
{
// UpdateListBoxReceived(usableMessage);
}
else if (usableMessage == "ERROR")
{
UpdateListBoxReceived("Cannot send EON Table to the node agent");
}
else if (usableMessage.StartsWith("TOPOLOGY"))
{
UpdateListBoxReceived(usableMessage);
}
}
//jesli paczka jest nullem
else
{
int index = listening_socket.IndexOf(listener);
// stwierdzam, że agent nie odpowiada, a potem go rozłączam
UpdateListBoxReceived("Network Node" + getIPAddressRemote(sends_socket.ElementAt(index)) + " is not responding");
UpdateListBoxReceived("Network Node" + getIPAddressRemote(sends_socket.ElementAt(index)) + " is disconnected");
listening_socket.RemoveAt(index);
sends_socket.RemoveAt(index);
routers_IP.RemoveAt(index);
_Application.comboBoxRouters.Invoke(new Action(delegate()
{
comboBoxRouters.Items.RemoveAt(index);
}));
//odłączanie
listener.Disconnect(true);
//send.Disconnect(true);
//usuwanie socketów, adresów z list by przy ponownym połączeniu dodawać je na ponownie
break;
}
}
}
}
// tworzenie wiadomości w zalezności od zaznaczonego typu wiadomości w comboBocActions
/// <summary>
/// tworzenie wiadomości w zalezności od zaznaczonego typu wiadomości w comboBocActions
/// </summary>
/// <returns> byte[] </returns>
private byte[] returnBytes()
{
byte[] table_in_bytes = new byte[128];
try
{
if (comboBoxTables.GetItemText(comboBoxTables.SelectedItem) == "Commutation Table")
{
if (comboBoxActions.GetItemText(comboBoxActions.SelectedItem) == "DELETE")
{
table_in_bytes = null;
string builder = string.Empty;;
string command = string.Empty;
string freq_in = string.Empty;
string port_in = string.Empty;
command = this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem);
freq_in = (textBoxFrequencyIN.Text).ToString();
port_in = (textBox_Port_IN.Text).ToString();
builder = command + "#" + "3" + "#" + freq_in + "#" + port_in;
short length = (Int16)builder.Length;
NMSPackage commutation_table = new NMSPackage(interfaces.ElementAt(1 - 1), builder, length);
if (freq_in == "" || port_in == "")
{
table_in_bytes = null;
}
else
{
table_in_bytes = commutation_table.toBytes();
}
}
else if (this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem) == "ADD")
{
table_in_bytes = null;
string builder = string.Empty;
string command = string.Empty;
string freq_in = string.Empty;
string port_in = string.Empty;
string freq_out = string.Empty;
string port_out = string.Empty;
command = this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem);
freq_in = (textBoxFrequencyIN.Text).ToString();
port_in = (textBox_Port_IN.Text).ToString();
freq_out = (textBoxFrequencyOUT.Text).ToString();
port_out = (textBoxPort_OUT.Text).ToString();
builder = command + "#" + "3" + "#" + freq_in + "#" + port_in + "#" + freq_out + "#" + port_out;
short length = (Int16)builder.Length;
NMSPackage commutation_table = new NMSPackage(interfaces.ElementAt(1 - 1), builder, length);
if (freq_in == "" || port_in == "" || freq_out == "" || port_out == "")
{
table_in_bytes = null;
}
else
{
table_in_bytes = commutation_table.toBytes();
}
}
else if (this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem) == "TOPOLOGY")
{
string builder = string.Empty;
string command = string.Empty;
command = "TOPOLOGY";
builder = command + "#" + "3";
short length = (Int16)builder.Length;
NMSPackage commutation_table = new NMSPackage(interfaces.ElementAt(1 - 1), builder, length);
table_in_bytes = commutation_table.toBytes();
}
}
if (this.comboBoxTables.GetItemText(this.comboBoxTables.SelectedItem) == "Border Node Commutation Table")
{
if (this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem) == "ADD")
{
table_in_bytes = null;
string builder = string.Empty;
string port_in = string.Empty;
string port_out = string.Empty;
string Hops = string.Empty;
string command = string.Empty;
string band_out = string.Empty;
string destination_IP = string.Empty;
string Modulation = string.Empty;
string BitRate = string.Empty;
string IP_IN = string.Empty;
string Frequency_out = string.Empty;
command = this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem);
IP_IN = (textBox_IP_IN.Text).ToString();
port_in = (textBox_Port_IN.Text).ToString();
band_out = (textBoxBand_OUT.Text).ToString();
Frequency_out = (textBoxFrequencyOUT.Text).ToString();
Modulation = (textBoxModulation.Text).ToString();
BitRate = (textBoxBitrate.Text).ToString();
destination_IP = (textBoxDestination_IP.Text).ToString();
port_out = (textBoxPort_OUT.Text).ToString();
Hops = (textBoxHops.Text).ToString();
builder = command + "#" + "1" + "#" + IP_IN + "#" + port_in + "#" + band_out + "#" + Frequency_out + "#" +
Modulation + "#" + BitRate + "#" + destination_IP + "#" + port_out + "#" + Hops;
short length = (Int16)builder.Length;
NMSPackage commutation_table = new NMSPackage(interfaces.ElementAt(1 - 1), builder, length);
if (IP_IN == "" || port_in == "" || band_out == "" || port_out == "" || Frequency_out == "" || Modulation == "" || BitRate == "" || destination_IP == "" || Hops == "")
{
table_in_bytes = null;
}
else
{
table_in_bytes = commutation_table.toBytes();
}
}
if (this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem) == "DELETE")
{
table_in_bytes = null;
string builder = string.Empty;
string command = string.Empty;
string IP_IN = string.Empty;
string port_in = string.Empty;
string destination_IP = string.Empty;
command = this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem);
IP_IN = (textBox_IP_IN.Text).ToString();
port_in = (textBox_Port_IN.Text).ToString();
destination_IP = (textBoxDestination_IP.Text).ToString();
builder = command + "#" + "1" + "#" + IP_IN + "#" + port_in + "#" + destination_IP;
short length = (Int16)builder.Length;
NMSPackage commutation_table = new NMSPackage(interfaces.ElementAt(1 - 1), builder, length);
if (IP_IN == "" || port_in == "" || destination_IP == "")
{
table_in_bytes = null;
}
else
{
table_in_bytes = commutation_table.toBytes();
}
}
else if (this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem) == "TOPOLOGY")
{
table_in_bytes = null;
string builder = string.Empty;
string command = string.Empty;
command = "TOPOLOGY";
builder = command + "#" + "1";
short length = (Int16)builder.Length;
NMSPackage commutation_table = new NMSPackage(interfaces.ElementAt(1 - 1), builder, length);
table_in_bytes = commutation_table.toBytes();
}
}
if (this.comboBoxTables.GetItemText(this.comboBoxTables.SelectedItem) == "EON Table")
{
if (this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem) == "ADD")
{
table_in_bytes = null;
string builder = string.Empty;
string command = string.Empty;
string Band_out = string.Empty;
string Band_in = string.Empty;
string frequency_in = string.Empty;
string Frequency_out = string.Empty;
command = this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem);
Band_out = (textBoxBand_OUT.Text).ToString();
Frequency_out = (textBoxFrequencyOUT.Text).ToString();
Band_in = (textBoxBand_IN.Text).ToString();
frequency_in = (textBoxFrequencyIN.Text).ToString();
builder = command + "#" + "2" + "#" + frequency_in + "#" + Band_in + "#" + Frequency_out + "#" + Band_out;
short length = (Int16)builder.Length;
NMSPackage commutation_table = new NMSPackage(interfaces.ElementAt(1 - 1), builder, length);
if (Band_out == "" || Frequency_out == "" || Band_in == "" || frequency_in == "")
{
table_in_bytes = null;
}
else
{
table_in_bytes = commutation_table.toBytes();
}
}
else if (this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem) == "DELETE")
{
table_in_bytes = null;
string builder = string.Empty;
string command = string.Empty;
string Band_out = string.Empty;
string Band_in = string.Empty;
string frequency_in = string.Empty;
string Frequency_out = string.Empty;
command = this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem);
Band_out = (textBoxBand_OUT.Text).ToString();
Frequency_out = (textBoxFrequencyOUT.Text).ToString();
Band_in = (textBoxBand_IN.Text).ToString();
frequency_in = (textBoxFrequencyIN.Text).ToString();
builder = command + "#" + "2" + "#" + frequency_in + "#" + Band_in + "#" + Frequency_out + "#" + Band_out;
short length = (Int16)builder.Length;
NMSPackage commutation_table = new NMSPackage(interfaces.ElementAt(1 - 1), builder, length);
if (Band_out == "" || Frequency_out == "" || Band_in == "" || frequency_in == "")
{
table_in_bytes = null;
}
else
{
table_in_bytes = commutation_table.toBytes();
}
}
else if (this.comboBoxActions.GetItemText(this.comboBoxActions.SelectedItem) == "TOPOLOGY")
{
table_in_bytes = null;
string builder = string.Empty;
string command = string.Empty;
command = "TOPOLOGY";
builder = command + "#" + "2";
short length = (Int16)builder.Length;
NMSPackage commutation_table = new NMSPackage(interfaces.ElementAt(1 - 1), builder, length);
table_in_bytes = commutation_table.toBytes();
}
}
}
catch (Exception e)
{
listBoxReceived.Items.Add("Error occured with getting data for the agent");
table_in_bytes = null;
}
return(table_in_bytes);
}
