public void OnServerDisconnect()
{
mw.UseDispatcher(mw, DispatcherPriority.Send, delegate
{
mw.WriteDebug("Server disconnected!", LogLevels.Info);
mw.ResetConnectionBar();
mw.SP_Board.IsEnabled = true;
mw.Btn_LockDrawing.IsEnabled = true;
mw.TBl_ControlPanel.Text = "";
});
}
public void Receive()
{
try
{
while (true)
{
Transfer <MessageContainer> transfer = new Transfer <MessageContainer>(Listener.AcceptTcpClient());
mw.WriteDebug("Client connected", LogLevels.Info);
int transferCount;
lock (__lockTransfers)
Transfers.Add(transfer);
transferCount = Transfers.Count + 1;
mw.UseDispatcher(mw.Canvas_Drawing, delegate
{
var msgList = new List <Message>();
if (mw.Canvas_Drawing.Children.Count < 1000) // Init with normal DrawData
{
//Send Drawing Data
foreach (var el in mw.Canvas_Drawing.Children)
{
if (el as Line != null)
{
Line l = (Line)el;
msgList.Add(new DrawData(l.X1, l.Y1, l.X2, l.Y2, (double)l.GetValue(Shape.StrokeThicknessProperty), l.GetValue(Shape.StrokeProperty).ToString()));
}
}
if (mw.DrawingLocked)
{
msgList.Add(new DrawLock());
}
else
{
msgList.Add(new DrawUnlock());
}
Send(transfer, new MessageContainer(msgList));
//Update other users
SendAll(new UserCount(transferCount));
}
else // Init with async DrawDataBlock
{
var msgListDrawData = new List <Message>();
msgList.Add(new DrawDataBlockFlag());
if (mw.DrawingLocked)
{
msgList.Add(new DrawLock());
}
//send no DrawUnlock to ensure the board is locked until DrawDataBlock
Send(transfer, new MessageContainer(msgList));
//Update other users
SendAll(new UserCount(transferCount));
//Send DrawDataBlock
CustomBrush lastBrush = null;
var lastLines = new List <NetCommunication.MessageTypes.SupportClasses.Line>();
foreach (var el in mw.Canvas_Drawing.Children)
{
if (el as Line != null)
{
Line l = (Line)el;
if (lastBrush == null)
{
lastBrush = new CustomBrush((SolidColorBrush)l.Stroke, l.StrokeThickness);
}
if (l.StrokeThickness != lastBrush.Thickness || l.Stroke != lastBrush.ColorBrush)
{
msgListDrawData.Add(new DrawDataBlock(lastBrush.ColorBrush.ToString(), lastBrush.Thickness, new List <NetCommunication.MessageTypes.SupportClasses.Line>(lastLines)));
lastLines.Clear();
lastBrush = new CustomBrush((SolidColorBrush)l.Stroke, l.StrokeThickness);
}
lastLines.Add(new NetCommunication.MessageTypes.SupportClasses.Line(l.X1, l.Y1, l.X2, l.Y2));
}
}
msgListDrawData.Add(new DrawDataBlock(lastBrush.ColorBrush.ToString(), lastBrush.Thickness, new List <NetCommunication.MessageTypes.SupportClasses.Line>(lastLines)));
Send(transfer, new MessageContainer(msgListDrawData));
}
});
//Start Receiver-Thread
ThreadPool.QueueUserWorkItem(delegate
{
try
{
while (true)
{
MessageReceived?.Invoke(transfer, new MessageReceivedEventArgs(transfer.Receive()));
}
}
catch (IOException)
{
OnClientDisconnect(transfer);
mw.WriteDebug("IOException in Server.Receive in transfer.Receive", LogLevels.Debug);
}
});
mw.UseDispatcher(mw.TBl_UserCount, delegate { mw.TBl_UserCount.Text = (transferCount).ToString(); });
}
}
catch (SocketException ex)
{
if (ex.ErrorCode != 10004) //WSACancelBlockingCall
{
mw.WriteDebug("WSACancelBlockingCall in Server.Recieve", LogLevels.Debug);
throw ex;
}
}
}
