private void New(object sender, RoutedEventArgs e)
{
SetBooleans(true);
DataGrid.UnselectAll();
TypeBox.Focus();
}
// Method: StartServer_Click()
// Description: This method takes the port from the interface, validates it
// and once validated, it fire ups the server and send user to
// chat screen.
private void StartServer_Click(object sender, EventArgs e)
{
// application is running server, update the variable to let other methods know
ServerItIs = true;
// get port from interface and clear the textbox
string portString = ServerPort.Text;
ServerPort.Clear();
bool valid = false;
// validate port
int temp = 0;
int.TryParse(portString, out temp);
if (temp > 0)
{
valid = true;
}
// start server if port is valid
if (valid)
{
Int32 port = Int32.Parse(portString);
IPAddress ip = IPAddress.Parse("127.0.0.1");
try
{
server = new TcpListener(ip, port);
// start server
server.Start();
// bring chat panel to front
ChatPanel.BringToFront();
TypeBox.Focus();
// update textbox at the top with IP address and port
ConnectionInfo.Text = "IP: " + GetLocalIPAddress() + " Port: " + port;
// start thread to handle the client
ThreadPool.QueueUserWorkItem(HandleClient);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
}
}
else
{
MessageBox.Show("Port cannot be alphabet, special character or negative number." +
"Please try again");
}
}
private void HandleThreadClick(object sender, MouseButtonEventArgs e)
{
var ctrl = sender as ThreadControl;
if (sender is ThreadControl)
{
_currentThread = ctrl.ThreadId;
ProcessThreadId(ctrl.ThreadId, true);
TypeBox.IsReadOnly = false;
TypeBox.Focus();
}
}
//Setup Game Setting
private void InitializeGame(int score)
{
game = new Game(score); //Game Setup
Dead.Text = ""; //Health Bar
TypeBox.Text = ""; //Type Area
TimeCounter.Text = ""; //Reset Timer for Time Left
words = new List <TextBlock>(Game.NoOfBlock); //Reset the number of words in game
for (int i = 0; i < Game.Lives; i++)
{
Lives[i] = LifeGrid.Children[i] as Image; //Health Bar Images
Lives[i].Visibility = Visibility.Visible;
}
Start start = new Start(Start_Game) + new Start(Start_Time) + new Start(Background_Timer); //Chain up all timer into delegate Start()
start();
TypeBox.Focus(); //Cursor on Typebox
}
// Method: StartClient_Click()
// Description: This method takes the IP and port from the interface, validates it
// and once validated, it tries to connect to server, once connected,
// send user to chat screen.
private void StartClient_Click(object sender, EventArgs e)
{
bool valid = false;
IPAddress ip;
int port = 0;
// validate ip and port
if (IPAddress.TryParse(ipbox.Text, out ip) && int.TryParse(clientport.Text, out port))
{
if (port > 0)
{
valid = true;
}
}
// initialise client and connect to server if valid
if (valid)
{
RunTheClient = new TcpClient();
try
{
// connect to server
RunTheClient.Connect(ip, port);
if (RunTheClient.Connected)
{
ChatPanel.BringToFront();
ConnectionInfo.Text = "Connected to server " + ip.ToString() + " at port " + port;
TypeBox.Focus();
// start thread to receive messages from server
ThreadPool.QueueUserWorkItem(HandleServer);
}
}
// connection refused
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
}
}
else
{
MessageBox.Show("Invalid entry. Please try again.");
}
}
// Method: SendEncrypted_Click()
// Description: This method takes the message from textbox, and send it over on
// the established TCP stream encrypted with Bruce Scheneir's algorithm.
private void SendEncrypted_Click(object sender, EventArgs e)
{
// get message from textbox to be sent
string msg = TypeBox.Text;
if (msg == "")
{
return;
}
TypeBox.Clear();
StreamWriter sw;
string key = "#981#-";
// encrypt it and add the key to let the other server/client know that it is
// encrypyed
string encrypted = key + b.Encrypt_CBC(msg);
try
{
// establish writer to write to stream
if (ServerItIs)
{
sw = new StreamWriter(client.GetStream());
}
else
{
sw = new StreamWriter(RunTheClient.GetStream());
}
sw.AutoFlush = true;
// send encrypted message
sw.WriteLine(encrypted);
// add to chat history
ChatHistory.Items.Add("Me: " + msg);
TypeBox.Focus();
ScrollToBottom();
}
catch (Exception)
{
MessageBox.Show("No clients have connected yet... Try again later!", "Error 643");
}
}
// Method: SendNormal_Click()
// Description: This method takes the message from textbox, and send it over on
// the established TCP stream (unencrypted).
private void SendNormal_Click(object sender, EventArgs e)
{
// get message from interface and make sure it is not empty
string msg = TypeBox.Text;
if (msg == "")
{
return;
}
// clear typebox after reading message
TypeBox.Clear();
StreamWriter sw;
try
{
// start the stream based on whether or not it is server
if (ServerItIs)
{
sw = new StreamWriter(client.GetStream());
}
else
{
sw = new StreamWriter(RunTheClient.GetStream());
}
sw.AutoFlush = true;
// write message to stream
sw.WriteLine(msg);
// add the chat history
ChatHistory.Items.Add("Me: " + msg);
TypeBox.Focus();
ScrollToBottom();
}
catch (Exception)
{
MessageBox.Show("No clients have connected yet... Try again later!", "Error 643");
}
}
private void Update(object sender, RoutedEventArgs e)
{
SetBooleans(true);
TypeBox.Focus();
}