public SendMessage(Message toSend, User chatUser, String thisUser,
ChatFrm owner)
{
this.timeoutCounter = 0;
this.toSend = toSend;
this.owner = owner;
this.chatUser = chatUser;
this.thisUser = thisUser;
SocketSend();
MACKTimer = new Timer();
MACKTimer.Interval = 10;
MACKTimer.Elapsed += new ElapsedEventHandler(MACKTimer_Tick);
MACKTimer.Enabled = true;
MACKTimer.Start();
}
private void threadSafeActivateChat(ChatFrm thisChat)
{
Control sync = this.ActiveControl;
if(sync != null && sync.InvokeRequired){
sync.Invoke((Action) delegate { threadSafeActivateChat(thisChat); });
return;
}
if(!thisChat.Visible)
this.Show();
thisChat.Activate();
}
/*private void createChat(User chatuser, String username){
if(mainControl != null && mainControl.InvokeRequired){
mainControl.Invoke(createChat)*/
private void messageListen()
{
while (true)
{
msgClient.Client.ReceiveTimeout = 100;
try
{
byte[] rcv = msgClient.Receive(ref msgRCVEP);
char[] rcvCStr = Encoding.ASCII.GetChars(rcv, 0, rcv.Length);
String rcvStr = new String(rcvCStr);
String uName = rcvStr.Substring(4, 32).Trim('\0');
bool isEncrypted = false;
if(rcvStr.Substring(41, 1)[0] != '\0')
isEncrypted = (Int32.Parse(rcvStr.Substring(41, 1)) == 1);
if (rcvStr.StartsWith("MESG"))
{
IPAddress rcvIP = msgRCVEP.Address;
User chatUser = checkAndAddUser(uName, rcvIP);
ChatFrm thisChat = null;
bool chatOpen = false;
int sequenceID = Int32.Parse(rcvStr.Substring(36, 5));
char[] mackMSGStr = Message.setupPacket("MACK", username,
sequenceID.ToString(), '0', "");
IPEndPoint sendTo = new IPEndPoint(rcvIP, StaticVars.msgPort);
UdpClient sendMACK = new UdpClient();
sendMACK.Send(Encoding.ASCII.GetBytes(mackMSGStr),
mackMSGStr.Length, sendTo);
if(chatUser.chatExists() && !chatUser.chatHidden()){
thisChat = chatUser.getChat();
threadSafeActivateChat(thisChat);
chatOpen = true;
}
if(!chatOpen){
thisChat = new ChatFrm(chatUser, username, this);
newChats.Add(thisChat);
chatUser.openChat(ref thisChat);
}
if (isEncrypted && !chatUser.isPasswordProtected())
{
GetPassword window = new GetPassword(chatUser.username);
while (window.ShowDialog() != DialogResult.OK) ;
chatUser.setPassword(window.password);
}
String messageStr = rcvStr.Substring(42, 140).Trim('\0');
Message receivedMessage = new Message(messageStr,
thisChat.chatUser);
if (!chatUser.receivedSequences.Contains(sequenceID))
{
chatUser.receivedSequences.Add(sequenceID);
chatUser.receivedMessages.Add(receivedMessage);
}
}
else if (rcvStr.StartsWith("MACK"))
{
foreach (User user in UserList)
{
if (user.username == uName)
{
int sequenceID = Int32.Parse(rcvStr.Substring(36, 5));
SendMessage temp = null;
user.touchAwaitingMACK(false, ref temp, sequenceID);
break;
}
}
}
// Manage memory
rcvCStr = null;
rcvStr = null;
uName = null;
rcv = null;
}
// Catch the exception for when the receive times out
// If the thread needs to be killed, exit the thread
catch (SocketException)
{
if (rcvThreadKill)
Application.ExitThread();
}
}
}
private void lbUsers_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == (char)Keys.Return)
{
int selectedIndex = lbUsers.SelectedIndex;
if (selectedIndex != -1)
{
String selectedUsername = lbUsers.Items[selectedIndex].ToString();
foreach (User user in UserList)
{
if (user.username == selectedUsername)
{
if (user.chatExists())
{
if (user.chatHidden())
{
user.getChat().Show();
}
user.getChat().Activate();
}
else
{
ChatFrm newChat = new ChatFrm(user, username, this);
user.openChat(ref newChat);
newChat.Show();
}
}
}
}
e.Handled = true;
// Memory handle
}
}
private void lbUsers_DoubleClick(object sender, MouseEventArgs e)
{
Point p = Cursor.Position;
p = lbUsers.PointToClient(p);
int selectedIndex = lbUsers.IndexFromPoint(p);
if (selectedIndex != -1)
{
// Check if a chat window is already open
String selectedUsername = lbUsers.Items[selectedIndex].ToString();
foreach (User user in UserList)
{
if (user.username == selectedUsername)
{
if (user.chatExists())
{
if (user.chatHidden())
{
user.getChat().Show();
}
user.getChat().Activate();
}
else
{
ChatFrm newChat = new ChatFrm(user, username, this);
user.openChat(ref newChat);
newChat.Show();
}
}
}
}
}
private void cmUser_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
int selectedIndex = lbUsers.SelectedIndex;
String selectedUsername = lbUsers.Items[selectedIndex].ToString();
GetPassword window = new GetPassword(selectedUsername);
if(window.ShowDialog() != DialogResult.OK)
return;
foreach (User user in UserList)
{
if (user.username == selectedUsername)
{
if (user.chatExists())
{
if (user.chatHidden())
{
user.setPassword(window.password);
user.getChat().Show();
}
user.getChat().Activate();
}
else
{
ChatFrm newChat = new ChatFrm(user, username, this);
user.setPassword(window.password);
user.openChat(ref newChat);
newChat.Show();
}
}
}
}
public void openChat(ref ChatFrm chatWindow)
{
if (this.chatWindow != null && this.chatWindow.Visible)
{
this.chatWindow.Activate();
chatWindow = null;
}
else
{
this.chatWindow = chatWindow;
//chatWindow.Show();
}
}
