private void OnTimeEventTestConnection(object source, ElapsedEventArgs e)
{
// Send 0 byte buffer, to check if the connection is still alive.
byte[] zeroByte = new byte[1];
try
{
// Call the call back for the sending.
_clientSocket.BeginSend(zeroByte, 0, 0, SocketFlags.None, new AsyncCallback(SendConnectionAlivenessVerificationCallback), null);
}
catch (Exception ex)
{
_serverTimer.Stop();
_mainWinWMCaller.CancelStringCommand();
Console.WriteLine(ex.ToString());
// Close the connection with the server. The disconnect function calls the CloseClient, the Remove server, and the removeProcessesFromApplication.
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Connessione interrotta dal server " + this.ServerIpAddress.ToString() + ".");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
});
_mainWinWMCaller.DisconnectFromServer(_serverIpAddress);
}
}
public void SendCommand(List <string> keyCommands, int Handle, int Pid)
{
int numKeys = keyCommands.Count();
// Generate the string that has to be sent.
string commandToSend = "command " + Handle + " " + Pid + " " + numKeys;
foreach (string key in keyCommands)
{
commandToSend += " " + key;
}
// Create the buffer byte that has to be sent.
byte[] commandByteBuffer = Encoding.Default.GetBytes(commandToSend); // Command to send have variable length
// Send the dimension of the send byte buffer together with it
// Ushort is on 2Bytes
ushort sBBLength = (ushort)commandByteBuffer.Length;
// Convert the dimension directly into bytes encoding
byte[] lengthIn2Bytes = BitConverter.GetBytes(sBBLength);
// Message length is encoded in network byte order (Big Endian), so I need to check if the architecture
// of the host is Little Endian, in that case reverse the order of the bytes before decoding
if (BitConverter.IsLittleEndian)
{
Array.Reverse(lengthIn2Bytes);
}
byte[] sendByteBuffer = new byte[lengthIn2Bytes.Length + commandByteBuffer.Length];
Buffer.BlockCopy(lengthIn2Bytes, 0, sendByteBuffer, 0, lengthIn2Bytes.Length);
Buffer.BlockCopy(commandByteBuffer, 0, sendByteBuffer, lengthIn2Bytes.Length, commandByteBuffer.Length);
try
{
// Call the call back for the sending.
_clientSocket.BeginSend(sendByteBuffer, 0, sendByteBuffer.Length, SocketFlags.None, new AsyncCallback(SendCallback), null);
}
catch (Exception e)
{
_mainWinWMCaller.CancelStringCommand();
Console.WriteLine(e.ToString());
// Close the connection with the server. The disconnect function calls the CloseClient, the Remove server, and the removeProcessesFromApplication.
_mainWinWMCaller.DisconnectFromServer(this.ServerIpAddress);
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Invio non riuscito, server disconnesso.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
});
}
}
/*******************
* PRIVATE METHODS *
*******************/
private void ConnectCallback(IAsyncResult ar)
{
try
{
_clientSocket.EndConnect(ar);
if (_clientSocket.Connected) // There is connection
{
// Notify the GUI the connetions has been performerd
_mainWinWMCaller.NotificationMessage = "Client connected to server " + _serverIpAddress;
// Start the timer to keep track of the connection time.
_connectionTimer.Start();
// Start the timer to check the connection aliveness.
_serverTimer.Start();
// Add the server to the data structures.
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate {
_mainWinWMCaller.AddServer(this, _serverIpAddress);
});
// Set this newly created Server as the Currently selected one.
_mainWinWMCaller.CurrentSelectedServer = this;
// Update the comboBox.
_mainWinWMCaller.CurrentServerChanged(_serverIpAddress);
// Start receiving data from the server.
Receive(2);
}
}
catch (Exception e)
{
// _connectionResult.AsyncWaitHandle.WaitOne(5000, true);
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Connessione con " + this.ServerIpAddress.ToString() + " non riuscita.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
});
// Remove the server Ip Address from the structure that contains it as a key
if (_mainWinWMCaller.ListOfConnectionThreads.ContainsKey(this.ServerIpAddress))
{
_mainWinWMCaller.ListOfConnectionThreads.Remove(this.ServerIpAddress);
}
Console.WriteLine(e.ToString());
CloseClient();
}
}
private void SendConnectionAlivenessVerificationCallback(IAsyncResult ar)
{
SocketError sockErr = new SocketError();
try
{
// End the sending.
int bytesSent = _clientSocket.EndSend(ar, out sockErr);
if (!sockErr.Equals(SocketError.Success) && !sockErr.Equals(SocketError.WouldBlock))
{
_mainWinWMCaller.CancelStringCommand();
// Close the connection with the server. The disconnect function calls the CloseClient, the Remove server, and the removeProcessesFromApplication.
_mainWinWMCaller.DisconnectFromServer(this.ServerIpAddress);
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Server " + this.ServerIpAddress.ToString() + " disconnesso.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
});
}
}
catch (Exception e)
{
// Check if the socket error is not WouldBlock (that is not a proper error):
// in this case return without taking action
if (sockErr.Equals(SocketError.WouldBlock))
{
Console.WriteLine(e.ToString());
}
else
{
_mainWinWMCaller.CancelStringCommand();
Console.WriteLine(e.ToString());
// Close the connection with the server. The disconnect function calls the CloseClient, the Remove server, and the removeProcessesFromApplication.
_mainWinWMCaller.DisconnectFromServer(this.ServerIpAddress);
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Server " + this.ServerIpAddress.ToString() + " disconnesso.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
});
}
}
}
/******************
* PUBLIC METHODS *
******************/
public void StartClient()
{
// Connect to a remote device.
try
{
// Establish the remote endpoint for the socket.
IPAddress ipAddress = _serverIpAddress;
IPEndPoint remoteEP = new IPEndPoint(ipAddress, _port);
// Create a TCP/IP socket.
_clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
// Connect to the remote endpoint.
_connectionResult = _clientSocket.BeginConnect(remoteEP, new AsyncCallback(ConnectCallback), null);
}
catch (Exception e)
{
Console.WriteLine("Exception : {0}", e.ToString());
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
string errormessage = "La connessione con il server è fallita";
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel(errormessage);
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
});
// Remove the server Ip Address from the structure that contains it as a key
if (_mainWinWMCaller.ListOfConnectionThreads.ContainsKey(this.ServerIpAddress))
{
_mainWinWMCaller.ListOfConnectionThreads.Remove(this.ServerIpAddress);
}
// Close the Socket
CloseClient();
}
}
// Intercept the disconnet_button_click, to stop if in the ApplicationView.
private void DisconnectFromServerButton_Click(object sender, RoutedEventArgs e)
{
if (_mainWindowViewModel != null)
{
if (_mainWindowViewModel.IsDisconnectButtonEnabled)
{
// Check that there is a currentSelectedServer!
if (_mainWindowViewModel.CurrentSelectedServer != null)
{
_mainWindowViewModel.CurrentSelectedServer.HasToStopTimer = true;
_mainWindowViewModel.DisconnectFromServer(_mainWindowViewModel.CurrentSelectedServer.ServerIpAddress);
}
}
else
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Per disconnettere un server, andare sulla vista Server.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
}
}
private void ReceiveCallback(IAsyncResult ar)
{
try
{
// Read data from the remote device.
int bytesRead = _clientSocket.EndReceive(ar);
// There is something to read
if (bytesRead > 0)
{
// Update the counter of reeived bytes.
_receiveBufferCounter += bytesRead;
if (_receiveBufferCounter > 0 && _receiveBufferCounter < _bytesToRead)
{
// I still need to receive data for the current message.
// Save what I received up to now, and listen again the socket.
Array.Copy(_receiveByteBuffer, 0, _storedByteBuffer, _receiveBufferCounter - bytesRead, bytesRead);
// Call the Receive again, to reed more bytes.
Receive(_bytesToRead - _receiveBufferCounter);
}
else if (_receiveBufferCounter == _bytesToRead)
{
// The counter is equal to _bytesToRead, the read is now complete.
// Still need to copy in the buffer what I have just received.
Array.Copy(_receiveByteBuffer, 0, _storedByteBuffer, _receiveBufferCounter - bytesRead, bytesRead);
// I read the first 2 bytes of a message containing its length
if (_receiveBufferCounter == 2)
{
// Message length is encoded in network byte order (Big Endian), so I need to check if the architecture
// of the host is Little Endian, in that case reverse the order of the bytes before decoding
if (BitConverter.IsLittleEndian)
{
Array.Reverse(_storedByteBuffer);
}
ushort messageLength = BitConverter.ToUInt16(_storedByteBuffer, 0);
nextRead = true;
Receive(messageLength);
}
else
{
// Then I can start processing the data.
// Create a string and get the received content of the buffer.
string receivedString = Encoding.Default.GetString(_storedByteBuffer);
string[] lines = Regex.Split(receivedString, "\n");
if (lines[0].Equals("newwindow")) // newwindows\n<path_exe>\n<nome_finestra>\n<handle>\n<pid>\n<dim_icona>\n<byteicon>
{
// I have a new window to listen about, and then add the to the ServerModel
string exePath = lines[1];
// Create the path and extract the file (program) name.
string windowName = lines[2];
int processHandle = Int32.Parse(lines[3]);
int processID = Int32.Parse(lines[4]);
// Set anyway the image as null.
BitmapImage icon = null;
if (lines.Length > 6)
{
// Means that there also information about the image, otherwise there is not
int iconDimension = Int32.Parse(lines[5]);
// If the iconDimension is < 0, that means that there were some errors: don't even read the rest of the message.
if (iconDimension > 0)
{
// Means that the Icon has been properly sent
icon = new BitmapImage();
byte[] imageByte = new byte[iconDimension];
// Compute the index of the start of the byte of the icon, so the already processed bytes.
int iconOffset = 0;
for (int i = 0; i < 6; i++)
{
iconOffset += lines[i].Length + 1;
}
// Take the image byte from the receivedByte, not from the receivedString, because it could have some \n characters.
Array.Copy(_storedByteBuffer.Skip(iconOffset).ToArray(), imageByte, iconDimension);
// Save the byte as a BitMapImage
using (var stream = new MemoryStream(imageByte))
{
stream.Position = 0;
icon.BeginInit();
icon.CreateOptions = BitmapCreateOptions.PreservePixelFormat;
icon.CacheOption = BitmapCacheOption.OnLoad;
icon.StreamSource = stream;
icon.EndInit();
icon.Freeze();
}
}
}
// Create the processModel with its constructor
// Icon can be null
ProcessModel newProcessM = new ProcessModel(windowName, exePath, processHandle, processID, icon);
// Set the notification message for the GUI.
_mainWinWMCaller.NotificationMessage = "Server: " + _serverIpAddress.ToString() + ".\nNew window " + newProcessM.ExePath + " has been created.";
// The process must be added in the ListofProcesses of the ServerModel
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate
{
_processList.Add(newProcessM);
});
// Update the process list the of the mainWindowModel.
_mainWinWMCaller.RaisePropertyChanged("TheProcessesList");
// Add this process to the applications of the same type
AddProcessToApplication(newProcessM);
}
if (lines[0].Equals("closed")) // closed\n<handle>\n<pid>
{
// I have received a notification from the server: one window have been closed.
// Extract Handle and PID
string[] handleAndPID = Regex.Split(lines[1], " ");
int handle = Int32.Parse(handleAndPID[0]);
int pid = Int32.Parse(handleAndPID[1]);
// Remove the Windows from the process lists. Find the process.
foreach (ProcessModel proc in _processList)
{
// Check if the window has the focus (different from null and they have the same handle)
if (_focusedProcess != null && _focusedProcess.ProcessWindowHandle.Equals(proc.ProcessWindowHandle))
{
// Check if the window has the focus (different from null and they have the same handle)
if (_focusedProcess != null && _focusedProcess.ProcessWindowHandle.Equals(proc.ProcessWindowHandle))
{
_focusedProcess.PauseWatch();
_focusedProcess = null;
}
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate
{
// Remove the process from the process list.
_processList.Remove(proc);
// Remove the process from the list of applications.
RemoveProcessFromApplications(proc);
});
// Set the notification message for the GUI.
_mainWinWMCaller.NotificationMessage = "Server: " + _serverIpAddress.ToString() + ".\nProcess " + proc.ExePath + " has been closed.";
// Exit the for loop.
break;
}
}
}
if (lines[0].Equals("focus"))
{
// I have received a notification, the window with focus has changed.
if (lines[1].Equals("nullwindow"))
{
// There is no focused window. Stop the focus: interrupt a timer.
// But only if the focused process already exists
if (_focusedProcess != null)
{
_focusedProcess.PauseWatch();
_focusedProcess.ProcessStatus = "";
_focusedProcess = null;
}
_mainWinWMCaller.NotificationMessage = "Server: " + _serverIpAddress.ToString() + ".\nFocus set on: null.";
}
if (lines[1].Equals("windowsoperatingsystem"))
{
// The focus is hold by the operating system. Stop the focus: interrupt a timer
// But only if the focused process already exists
if (_focusedProcess != null)
{
_focusedProcess.PauseWatch();
_focusedProcess.ProcessStatus = "";
_focusedProcess = null;
}
_mainWinWMCaller.NotificationMessage = "Server: " + _serverIpAddress.ToString() + ".\nFocus set on: Operating System.";
}
if (lines[1].All(char.IsDigit)) // Check that the string is a number.
{
// A window holds the focus.
int handle = Int32.Parse(lines[1]);
int pid = Int32.Parse(lines[2]);
// Change the focus: interrupt a timer (if there was one running) and start another.
// But only if the focused process already exists
if (_focusedProcess != null)
{
_focusedProcess.PauseWatch();
_focusedProcess.ProcessStatus = "";
}
// Find the focused process.
foreach (ProcessModel proc in _processList)
{
if (proc.ProcessWindowHandle == handle)
{
// Set this process as the focused one.
_focusedProcess = proc;
// Exit the for loop.
break;
}
}
_focusedProcess.RestartWatch();
_focusedProcess.ProcessStatus = "On Focus";
_mainWinWMCaller.NotificationMessage = "Server: " + _serverIpAddress.ToString() + ".\nFocus set on: " + _focusedProcess.ExePath + ".";
}
}
// Set the flag to read next block and go back to listen on the socket.
nextRead = true;
Receive(2);
}
}
}
else if (bytesRead == 0)
{
// In am in the case of a graceful disconnection, shutdown of the server from the serverside.
// Stop the Check Connection Timer
ServerTimer.Stop();
// Close the connection with the server. The disconnect function calls the CloseClient, the Remove server, and the removeProcessesFromApplication.
_mainWinWMCaller.DisconnectFromServer(this.ServerIpAddress);
// Close the connection with the server. The disconnect function calls the CloseClient, the Remove server, and the removeProcessesFromApplication.
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Connessione interrotta dal server " + this.ServerIpAddress.ToString() + ".");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
});
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
public void SendCommand()
{
// Divide the cases: the one with the ServerView and the one with the ApplicationView
if (_shouldShowServer)
{
// The selected view is the one of the servers.
// If there is at lest a key in the command
if (_keyStrings.Count() != 0)
{
// If there is a CurrentSelectedServer
if (CurrentSelectedServer != null)
{
// If there is a process selected.
if (CurrentSelectedProcess != null)
{
CurrentSelectedServer.SendCommand(_keyStrings, _currentSelectedProcess.ProcessWindowHandle, _currentSelectedProcess.ProcessId);
}
else // The CurrentSelectedProcess is null, show the Error Window.
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Nessuna finestra selezionata.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
}
else // The CurrentSelectedServer is null, show the Error Window.
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Non è selezionato nessun server.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
}
else // There is no command to send.
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Nessun comando inserito.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
// Clean the textBox in the GUI and clean the list of keys.
CancelStringCommand();
}
else if (_shouldShowApplication)
{
// The selected view is the one of the applications.
// If there is at lest a key in the command
if (_keyStrings.Count() != 0)
{
// If there is a selected application.
if (CurrentSelectedApplication != null)
{
// If the are selected severs.
if (SelectedServersForApplication != null)
{
// If there is at least a server selected for the selected application.
if (SelectedServersForApplication.Count() > 0)
{
// For each server selected, send the signal to all the applications it runs, that have the same application name of the one selected.
foreach (ServerModel server in SelectedServersForApplication)
{
foreach (ProcessModel process in server.TheProcesses)
{
// I have to check if the exeName of the process is equal to the selected application.
string processExeName = Path.GetFileName(process.ExePath); // returns File.exe
if (processExeName.Equals(_currentSelectedApplication.ApplicationName))
{
// I have to send the command, since they are the same application
server.SendCommand(_keyStrings, process.ProcessWindowHandle, process.ProcessId);
}
}
}
CancelStringCommand();
}
else // There is no selected server.
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Non è selezionato nessun server.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
}
else // There is no selected server.
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Non è selezionato nessun server.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
}
else // There is no selected application.
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Non è selezionata nessuna applicazione.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
}
else // There is no command to send.
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Nessun comando inserito.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
}
}
// Disconnect the client from the currently selected Server
public void DisconnectFromServer(IPAddress ipServerToDisconnect)
{
if (ipServerToDisconnect != null)
{
ServerModel serverToDisconnect = null;
// From the Ip look-up the server.
foreach (ServerModel server in ServerConnections)
{
if (server.ServerIpAddress.Equals(ipServerToDisconnect))
{
serverToDisconnect = server;
// Stop the serverTimer if the disconnect is called from the GUI
if (serverToDisconnect.HasToStopTimer)
{
serverToDisconnect.ServerTimer.Stop();
}
break;
}
}
if (serverToDisconnect != null)
{
// I found the server I want to disconnect
if (serverToDisconnect.Equals(CurrentSelectedServer))
{
// I want to disconnect the currentSelectedServer
serverToDisconnect.CloseClient();
// The function calls already the RemoveServer function
// Remove the server information form the GUI
NotificationMessage = "Server " + ipServerToDisconnect.ToString() + " disconnesso.";
// If there are other servers, select the first of them
if (ServerConnections.Count() > 0)
{
// Select the first server.
CurrentSelectedServer = ServerConnections.First();
CurrentSelectedIpAddress = CurrentSelectedServer.ServerIpAddress;
CurrentSelectedProcess = null;
TheProcessesList = CurrentSelectedServer.TheProcesses;
// Update the GUI
RaisePropertyChanged("TheProcessesList");
RaisePropertyChanged("CurrentSelectedIpAddress");
RaisePropertyChanged("CurrentSelectedServer");
RaisePropertyChanged("CurrentSelectedProcess");
RaisePropertyChanged("IpConnections");
}
else // There are no more connected servers.
{
CurrentSelectedServer = null;
CurrentSelectedProcess = null;
CurrentSelectedIpAddress = null;
TheProcessesList = null;
// Update the GUI
RaisePropertyChanged("TheProcessesList");
RaisePropertyChanged("CurrentSelectedIpAddress");
RaisePropertyChanged("CurrentSelectedServer");
RaisePropertyChanged("CurrentSelectedProcess");
RaisePropertyChanged("IpConnections");
}
}
else
{
// The server I want to disconnect is just one among the others.
// Close takes care of calling the removeProcessfromApplications and the remove server.
serverToDisconnect.CloseClient();
// Update the GUI
RaisePropertyChanged("TheProcessesList");
RaisePropertyChanged("CurrentSelectedIpAddress");
RaisePropertyChanged("CurrentSelectedServer");
RaisePropertyChanged("CurrentSelectedProcess");
RaisePropertyChanged("IpConnections");
}
}
else // I haven't found the server I am looking for
{
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Non è stato trovato il server da disconnettere.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
});
}
}
else // No server is selected
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Non è selezionato nessun server.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
}
/******************
* PUBLIC METHODS *
******************/
// Connect the Client with the Server.
public void ConnectToServer()
{
// Check that the Ip Address is in the right and expected form.
if (IpAddress != null)
{
if (Regex.IsMatch(IpAddress, @"^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$"))
{
// Set a flag to check that the address in within the boundaries.
bool wrongIpAddress = false;
// Split the address in the numbers.
string[] ipNumbers = IpAddress.Split('.');
foreach (string num in ipNumbers)
{
if (Int32.Parse(num) > 255)
{
// If a number is too big (can not be smaller than zero, checked in the regex) change the flag value.
wrongIpAddress = true;
}
}
// If the address is correct
if (!wrongIpAddress)
{
IPAddress serverIpAddress = IPAddress.Parse(IpAddress);
if (!ListOfConnectionThreads.ContainsKey(serverIpAddress))
{
// Clean the Input string
IpAddress = "";
// Create the thread passing a parameter, the serverIpAddress I want to connect with.
Thread myNewThread = new Thread(() => ServerThreadRoutine(serverIpAddress));
// Add the thread to the data structure.
ListOfConnectionThreads.Add(serverIpAddress, myNewThread);
// Start the thread.
myNewThread.Start();
}
else // The address is already inserted in the IpConnections
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("La connessione con questo server già è presente.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
}
else // The address is not in the proper form, show the ErrorWindow.
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Formato indirizzo Ip sbagliato.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
}
else // The address is not in the proper form, show the ErrorWindow.
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Formato indirizzo Ip sbagliato.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
}
else // The IpAddress is null, show the Error Window.
{
// Open the Error Window
Views.ErrorWindowView errView = new Views.ErrorWindowView();
ErrorWindowViewModel errWindViewModel = new ErrorWindowViewModel("Indirizzo Ip assente.");
errWindViewModel.ClosingRequest += errView.Close;
errView.DataContext = errWindViewModel;
errView.Show();
}
}
