Merge branch 'master' into stateful-canvas

merge Fix async stuff into master

Client/Client.cs

@@ -2,20 +2,29 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.IO;
 using System.Net.Sockets;
 using System.Text;
+using System.Windows.Media;
+using System.Windows;
+
 using static SharedClientServer.JSONConvert;
 
 namespace Client
 {
-    public delegate void LobbyCallback(int id);
     public delegate void LobbyJoinCallback(bool isHost);
+    public delegate void CanvasDataReceived(double[][] coordinates, Color color);
+    public delegate void CanvasReset();
+    public delegate void LobbyCallback(int id);
     class Client : ObservableObject
     {
+
+        private ClientData clientData = ClientData.Instance;
+
         private TcpClient tcpClient;
         private NetworkStream stream;
-        private byte[] buffer = new byte[1024];
+        private byte[] buffer = new byte[2048];
-        private byte[] totalBuffer = new byte[1024];
+        private byte[] totalBuffer = new byte[2048];
         private int totalBufferReceived = 0;
         public int Port = 5555;
         public bool Connected = false;
@@ -24,9 +33,12 @@ namespace Client
         public Callback OnLobbiesListReceived;
         public LobbyJoinCallback OnLobbyJoinSuccess;
         public Callback OnLobbiesReceivedAndWaitingForHost;
+        public Callback OnServerDisconnect;
         public LobbyCallback OnLobbyCreated;
         public LobbyCallback OnLobbyLeave;
         private ClientData data = ClientData.Instance;
+        public CanvasDataReceived CanvasDataReceived;
+        public CanvasReset CReset;
         public Lobby[] Lobbies { get; set; }
 
         public Client(string username)
@@ -40,45 +52,60 @@ namespace Client
         private void OnConnect(IAsyncResult ar)
         {
             Debug.Write("finished connecting to server");
-            this.tcpClient.EndConnect(ar);
+            try
-            this.stream = tcpClient.GetStream();
+            {
-            OnSuccessfullConnect?.Invoke();
+                this.tcpClient.EndConnect(ar);
-            SendMessage(JSONConvert.ConstructUsernameMessage(username));
+                this.stream = tcpClient.GetStream();
-            this.stream.BeginRead(buffer, 0, buffer.Length, new AsyncCallback(OnReadComplete),null);
+                OnSuccessfullConnect?.Invoke();
+                SendMessage(JSONConvert.ConstructUsernameMessage(username));
+                this.stream.BeginRead(buffer, 0, buffer.Length, new AsyncCallback(OnReadComplete),null);
+
+            } catch (Exception e)
+            {
+                Debug.WriteLine("Can't connect, retrying...");
+                tcpClient.BeginConnect("localhost", Port, new AsyncCallback(OnConnect), null);
+            }
         }
 
         private void OnReadComplete(IAsyncResult ar)
         {
+
             if (ar == null || (!ar.IsCompleted) || (!this.stream.CanRead) || !this.tcpClient.Client.Connected)
                 return;
-
+            try
-            int amountReceived = stream.EndRead(ar);
-
-            if (totalBufferReceived + amountReceived > 1024)
             {
-                throw new OutOfMemoryException("buffer too small");
+                int amountReceived = stream.EndRead(ar);
-            }
 
-            Array.Copy(buffer, 0, totalBuffer, totalBufferReceived, amountReceived);
+                if (totalBufferReceived + amountReceived > 2048)
-            totalBufferReceived += amountReceived;
+                {
+                    throw new OutOfMemoryException("buffer too small");
+                }
 
-            int expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
 
-            while (totalBufferReceived >= expectedMessageLength)
+                Array.Copy(buffer, 0, totalBuffer, totalBufferReceived, amountReceived);
+                totalBufferReceived += amountReceived;
+
+                int expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
+
+                while (totalBufferReceived >= expectedMessageLength)
+                {
+                    // we have received the complete packet
+                    byte[] message = new byte[expectedMessageLength];
+                    // put the message received into the message array
+                    Array.Copy(totalBuffer, 0, message, 0, expectedMessageLength);
+                    handleData(message);
+
+                    totalBufferReceived -= expectedMessageLength;
+                    expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
+                }
+
+                ar.AsyncWaitHandle.WaitOne();
+                stream.BeginRead(buffer, 0, buffer.Length, new AsyncCallback(OnReadComplete), null);
+            } catch (IOException e)
             {
-                // we have received the complete packet
+                Debug.WriteLine("[CLIENT] server not responding! got error: " + e.Message);
-                byte[] message = new byte[expectedMessageLength];
+                OnServerDisconnect?.Invoke();   
-                // put the message received into the message array
-                Array.Copy(totalBuffer, 0, message, 0, expectedMessageLength);
-
-                handleData(message);
-
-                totalBufferReceived -= expectedMessageLength;
-                expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
             }
-
-            ar.AsyncWaitHandle.WaitOne();
-            stream.BeginRead(buffer, 0, buffer.Length, new AsyncCallback(OnReadComplete), null);
         }
 
         private void handleData(byte[] message)
@@ -142,7 +169,22 @@ namespace Client
 
                 case JSONConvert.CANVAS:
                     // canvas data
-                    break;
+                    //clientData.CanvasData = JSONConvert.getCoordinates(payload);         
+                    int type = JSONConvert.GetCanvasMessageType(payload);
+                    switch (type)
+                    {
+                        case JSONConvert.CANVAS_RESET:
+                            CReset?.Invoke();
+                            break;
+
+                        case JSONConvert.CANVAS_WRITING:
+                            CanvasDataReceived?.Invoke(JSONConvert.getCoordinates(payload), JSONConvert.getCanvasDrawingColor(payload));
+                            // we hebben gedrawed, dus stuur dat we weer kunnen drawen
+                            
+                            break;
+                    }
+                break;
+
 
                 case JSONConvert.RANDOMWORD:
                     //Flag byte for receiving the random word.
@@ -155,6 +197,7 @@ namespace Client
                     Debug.WriteLine("[CLIENT] Received weird identifier: " + id);
                     break;
             }
+            SendMessage(JSONConvert.GetMessageToSend(JSONConvert.MESSAGE_RECEIVED,null));
 
         }
 
@@ -162,12 +205,14 @@ namespace Client
         {
             Debug.WriteLine("[CLIENT] sending message " + Encoding.ASCII.GetString(message));
             stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWriteComplete), null);
+
         }
 
         private void OnWriteComplete(IAsyncResult ar)
         {
             Debug.WriteLine("[CLIENT] finished writing");
             stream.EndWrite(ar);
+            stream.Flush();
         }
     }
 }

Client/ClientData.cs

@@ -31,6 +31,7 @@ namespace Client
         private Client _client;
         private Lobby _lobby;
         private string _message;
+        private double[] _canvasData = new double[4];
 
         private ClientData()
         {
@@ -68,5 +69,11 @@ namespace Client
             }
         }
 
+        public double[] CanvasData
+        {
+            get { return _canvasData; }
+            set { _canvasData = value; }
+        }
+
     }
 }

Client/ViewModels/ViewModel.cs

@@ -11,6 +11,9 @@ using System.Collections.ObjectModel;
 using Client.Views;
 using System.Linq;
 using System.Windows.Data;
+using System.Data;
+using System.Windows.Controls.Primitives;
+using System.Windows.Controls;
 
 namespace Client
 {
@@ -35,6 +38,10 @@ namespace Client
             client = ClientData.Instance.Client;
             client.OnLobbiesListReceived = updateLobbies;
             client.OnLobbyLeave = leaveLobby;
+            client.OnServerDisconnect = () =>
+            {
+                Environment.Exit(0);
+            };
             
 
             OnHostButtonClick = new RelayCommand(hostGame);
@@ -58,12 +65,10 @@ namespace Client
 
         private void becomeHostForLobby(int id)
         {
-            
             Debug.WriteLine($"got host succes with data {id} ");
             wantToBeHost = true;
             wantToBeHostId = id;
             client.OnLobbiesReceivedAndWaitingForHost = hostLobbiesReceived;
-
         }
 
         private void hostLobbiesReceived()
@@ -85,9 +90,16 @@ namespace Client
 
         private void joinLobby()
         {
+            if (SelectedLobby != null)
+            {
+                if (SelectedLobby.PlayersIn == SelectedLobby.MaxPlayers || !SelectedLobby.LobbyJoinable)
+                {
+                    return;
+                }
+                client.OnLobbyJoinSuccess = OnLobbyJoinSuccess;
+                client.SendMessage(JSONConvert.ConstructLobbyJoinMessage(SelectedLobby.ID));
+            }
             
-            client.OnLobbyJoinSuccess = OnLobbyJoinSuccess;
-            client.SendMessage(JSONConvert.ConstructLobbyJoinMessage(SelectedLobby.ID));
         }
 
         private void OnLobbyJoinSuccess(bool isHost)
@@ -163,5 +175,7 @@ namespace Client
             get { return _lobbies; }
             set { _lobbies = value; }
         }
+
+   
     }
 }

Client/ViewModels/ViewModelGame.cs

@@ -1,148 +1,244 @@
-
+
-using Client.Views;
+using Client.Views;
-using GalaSoft.MvvmLight.Command;
+using GalaSoft.MvvmLight.Command;
-using SharedClientServer;
+using SharedClientServer;
-using System.Collections.ObjectModel;
+using System;
-using System.ComponentModel;
+using System.Collections.Generic;
-using System.Diagnostics;
+using System.Collections.ObjectModel;
-using System.Windows;
+using System.ComponentModel;
-using System.Windows.Controls;
+using System.Diagnostics;
-using System.Windows.Input;
+using System.Timers;
-using System.Windows.Media;
+using System.Windows;
-using System.Windows.Shapes;
+using System.Windows.Controls;
-
+using System.Windows.Input;
-namespace Client.ViewModels
+using System.Windows.Media;
-{
+using System.Windows.Shapes;
-    class ViewModelGame : INotifyPropertyChanged
+
-    {
+namespace Client.ViewModels
-        private ClientData data = ClientData.Instance;
+{
-
+    class ViewModelGame : INotifyPropertyChanged
-        public event PropertyChangedEventHandler PropertyChanged;
+    {
-
+        public event PropertyChangedEventHandler PropertyChanged;
-        private Point currentPoint = new Point();
+        private ClientData data = ClientData.Instance;
-        private Color color;
+        private GameWindow window;
-
+        private Point currentPoint = new Point();
-        public static ObservableCollection<string> Messages { get; } = new ObservableCollection<string>();
+        public Color color;
-
+        public double[][] buffer;
-        private dynamic _payload;
+        public int pos = 0;
-
+        public int maxLines = 50;
-        public static string Word
+        public Queue<double[][]> linesQueue;
-        {
+        private Timer queueTimer;
-            get;
+
-            set;
+        public static ObservableCollection<string> Messages { get; } = new ObservableCollection<string>();
-        }
+
-
+        private dynamic _payload;
-        public string _username;
+
-
+        public static string Word
-        public string _message;
+        {
-        public string Message
+            get;
-        {
+            set;
-            get
+        }
-            {
+
-                return _message;
+        public string _username;
-            }
+
-            set
+        public string _message;
-            {
+        public string Message
-                _message = value;
+        {
-            }
+            get
-        }
+            {
-        public ICommand OnKeyDown { get; set; }
+                return _message;
-
+            }
-        public void Canvas_MouseDown(MouseButtonEventArgs e, GameWindow window)
+            set
-        {
+            {
-            if (e.ButtonState == MouseButtonState.Pressed)
+                _message = value;
-            {
+            }
-                currentPoint = e.GetPosition(window.CanvasForPaint);
+        }
-            }
+
-        }
+        public bool IsHost
-
+        {
-        public void Canvas_MouseMove(MouseEventArgs e, GameWindow window)
+            get { return data.User.Host; }
-        {
+        }
-            if (e.LeftButton == MouseButtonState.Pressed)
+
-            {
+        public ViewModelGame(GameWindow window)
-                double[] coordinates = new double[4];
+        {
-                Line line = new Line();
+            this.window = window;
-
+            if (_payload == null)
-                line.Stroke = new SolidColorBrush(color);
+            {
-                //line.Stroke = SystemColors.WindowFrameBrush;
+                _message = "";
-                line.X1 = currentPoint.X;
+
-                line.Y1 = currentPoint.Y;
+            }
-                line.X2 = e.GetPosition(window.CanvasForPaint).X;
+            else
-                line.Y2 = e.GetPosition(window.CanvasForPaint).Y;
+            {
-                coordinates[0] = line.X1;
+                //_message = data.Message;
-                coordinates[1] = line.Y1;
+                //_username = data.User.Username;
-                coordinates[2] = line.X2;
+                //Messages.Add($"{data.User.Username}: {Message}");
-                coordinates[3] = line.Y2;
+            }
-                currentPoint = e.GetPosition(window.CanvasForPaint);
+
-
+            buffer = new double[maxLines][];
-                window.CanvasForPaint.Children.Add(line);
+            linesQueue = new Queue<double[][]>();
-                data.Client.SendMessage(JSONConvert.GetMessageToSend(0x04, coordinates));
+            OnKeyDown = new RelayCommand(ChatBox_KeyDown);
-            }
+            ButtonStartGame = new RelayCommand(BeginGame);
-        }
+            ButtonResetCanvas = new RelayCommand(CanvasResetLocal);
-
+            data.Client.CanvasDataReceived = UpdateCanvasWithNewData;
-        public void Color_Picker(RoutedPropertyChangedEventArgs<Color?> e, GameWindow window)
+            data.Client.CReset = CanvasResetData;
-        {
+        }
-            Color colorSelected = new Color();
+
-            colorSelected.A = 255;
+        public ICommand OnKeyDown { get; set; }
-            colorSelected.R = window.ClrPcker_Background.SelectedColor.Value.R;
+        public ICommand ButtonStartGame { get; set; }
-            colorSelected.G = window.ClrPcker_Background.SelectedColor.Value.G;
+        public ICommand ButtonResetCanvas { get; set; }
-            colorSelected.B = window.ClrPcker_Background.SelectedColor.Value.B;
+       
-            color = colorSelected;
+        public void BeginGame()
-        }
+        {
-
+            
-
+            queueTimer = new Timer(50);
-        public ViewModelGame()
+            queueTimer.Start();
-        {
+            queueTimer.Elapsed += sendArrayFromQueue;
-            OnKeyDown = new RelayCommand(ChatBox_KeyDown);
+            data.Client.SendMessage(JSONConvert.ConstructGameStartData(data.Lobby.ID));
-        }
+        }
-
+
-        private void ChatBox_KeyDown()
+
-        {
+        private void CanvasResetLocal()
-            //if enter then clear textbox and send message.
+        {
-            if (Message != string.Empty) AddMessage(Message);
+            this.window.CanvasForPaint.Children.Clear();
-            Message = string.Empty;
+            data.Client.SendMessage(JSONConvert.GetMessageToSend(JSONConvert.CANVAS, JSONConvert.CANVAS_RESET));
-        }
+        }
-
+
-        internal void AddMessage(string message)
+
-        {
+        public void Canvas_MouseDown(MouseButtonEventArgs e, GameWindow window)
-            Messages.Add($"{data.User.Username}: {message}");
+        {
-
+            if (e.ButtonState == MouseButtonState.Pressed)
-            _payload = new
+            {
-            {
+                currentPoint = e.GetPosition(window.CanvasForPaint);
-                username = data.User.Username,
+            }
-                message = message
+        }
-            };
+
-
+        public void Canvas_MouseMove(MouseEventArgs e, GameWindow window)
-            //Broadcast the message after adding it to the list!
+        {
-            data.Client.SendMessage(JSONConvert.GetMessageToSend(JSONConvert.MESSAGE, _payload));
+            if (e.LeftButton == MouseButtonState.Pressed)
-        }
+            {
-
+                double[] coordinates = new double[4];
-        /*
+                Line line = new Line();
-         * MISC make this a callback
+
-         * Handles the incoming chat message from another client.
+                line.Stroke = new SolidColorBrush(color);
-         */
+                //line.Stroke = SystemColors.WindowFrameBrush;
-        public static void HandleIncomingMsg(string username, string message)
+                line.X1 = currentPoint.X;
-        {
+                line.Y1 = currentPoint.Y;
-            Application.Current.Dispatcher.Invoke(delegate
+                line.X2 = e.GetPosition(window.CanvasForPaint).X;
-            {
+                line.Y2 = e.GetPosition(window.CanvasForPaint).Y;
-                Messages.Add($"{username}: {message}");
+                coordinates[0] = line.X1;
-            });
+                coordinates[1] = line.Y1;
-        }
+                coordinates[2] = line.X2;
-        public void LeaveGame(object sender, CancelEventArgs e)
+                coordinates[3] = line.Y2;
-        {
+                currentPoint = e.GetPosition(window.CanvasForPaint);
-            Debug.WriteLine("Leaving...");
+                buffer[pos] = coordinates;
-            data.Client.SendMessage(JSONConvert.ConstructLobbyLeaveMessage(data.Lobby.ID));
+                pos++;
-        }
+
-
+                window.CanvasForPaint.Children.Add(line);
-        /*
+                if (pos == maxLines)
-         * MISC make this a callback
+                {
-         * Handles the random word that has been received from the server.
+                    double[][] temp = new double[maxLines][];
-         */
+                    for (int i = 0; i < maxLines; i++)
-        public static void HandleRandomWord(string randomWord)
+                    {
-        {
+                        temp[i] = buffer[i];
-            Debug.WriteLine("[CLIENT] Reached the handle random word method!");
+                    }
-            Word = "NegerPik";
+                    linesQueue.Enqueue(temp);
-        }
+                    Array.Clear(buffer, 0, buffer.Length);
-    }
+                    pos = 0;
-}
+                }
-
+                
+            }
+        }
+
+        private void sendArrayFromQueue(object sender, ElapsedEventArgs e)
+        {
+            
+            if (linesQueue.Count != 0)
+            {
+                Debug.WriteLine("[GAME] sending canvas data...");
+                double[][] temp = linesQueue.Dequeue();
+                data.Client.SendMessage(JSONConvert.ConstructDrawingCanvasData(temp,color));
+            }
+        }
+
+        public void Color_Picker(RoutedPropertyChangedEventArgs<Color?> e, GameWindow window)
+        {
+            Color colorSelected = new Color();
+            colorSelected.A = 255;
+            colorSelected.R = window.ClrPcker_Background.SelectedColor.Value.R;
+            colorSelected.G = window.ClrPcker_Background.SelectedColor.Value.G;
+            colorSelected.B = window.ClrPcker_Background.SelectedColor.Value.B;
+            color = colorSelected;
+        }
+
+        private void UpdateCanvasWithNewData(double[][] buffer, Color color)
+        {
+            Application.Current.Dispatcher.Invoke(delegate
+            {
+                foreach (double[] arr in buffer)
+                {
+                    Line line = new Line();
+                    line.Stroke = new SolidColorBrush(color);
+                    line.X1 = arr[0];
+                    line.Y1 = arr[1];
+                    line.X2 = arr[2];
+                    line.Y2 = arr[3];
+                    this.window.CanvasForPaint.Children.Add(line);
+                }
+            });
+        }
+
+        private void CanvasResetData()
+        {
+            this.window.CanvasForPaint.Children.Clear();
+        }
+
+        private void ChatBox_KeyDown()
+        {
+            //if enter then clear textbox and send message.
+            if (Message != string.Empty) AddMessage(Message);
+            Message = string.Empty;
+        }
+
+        internal void AddMessage(string message)
+        {
+            Messages.Add($"{data.User.Username}: {message}");
+
+            _payload = new
+            {
+                username = data.User.Username,
+                message = message
+            };
+
+            //Broadcast the message after adding it to the list!
+            data.Client.SendMessage(JSONConvert.GetMessageToSend(JSONConvert.MESSAGE, _payload));
+        }
+
+        /*
+         * MISC make this a callback
+         * Handles the incoming chat message from another client.
+         */
+        public static void HandleIncomingMsg(string username, string message)
+        {
+            Application.Current.Dispatcher.Invoke(delegate
+            {
+                Messages.Add($"{username}: {message}");
+            });
+        }
+        public void LeaveGame(object sender, CancelEventArgs e)
+        {
+            Debug.WriteLine("Leaving...");
+            data.Client.SendMessage(JSONConvert.ConstructLobbyLeaveMessage(data.Lobby.ID));
+        }
+
+        /*
+         * MISC make this a callback
+         * Handles the random word that has been received from the server.
+         */
+        public static void HandleRandomWord(string randomWord)
+        {
+            Debug.WriteLine("[CLIENT] Reached the handle random word method!");
+            Word = "NegerPik";
+        }
+    }
+}
+

Client/Views/GameWindow.xaml

@@ -34,12 +34,27 @@
 
         </Grid>
 
-        <Button Name="CanvasReset" Click="CanvasReset_Click" Grid.Row="0" Grid.Column="2" Margin="84,10,10,10" Content="RESET"/>
+        <Grid Grid.Row="0" Grid.Column="1">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="160"/>
+                <ColumnDefinition Width="160"/>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="100"/>
+            </Grid.ColumnDefinitions>
+            <Label Grid.Row="0" Grid.Column="0" VerticalAlignment="Center" FontSize="20" Content="Pick a color -->"/>
+            <xctk:ColorPicker Name="ClrPcker_Background" SelectedColorChanged="ClrPcker_Background_SelectedColorChanged_1" Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center" Height="22" Width="100"/>
 
+            <Label Grid.Row="0" Grid.Column="2" FontSize="20" Content="" VerticalAlignment="Center" HorizontalAlignment="Center"/>
+            
+            <Button Name="CanvasReset" Click="CanvasReset_Click" Grid.Row="0" Grid.Column="3" Content="RESET"/>
+        </Grid>
+
+        <Button Name="StartGame" Grid.Row="0" Grid.Column="2" Content="Start Game" FontSize="20" Command="{Binding ButtonStartGame}" IsEnabled="{Binding IsHost}"/>
         <Label Name="GuessWord" Grid.Row="0" Grid.Column="1" Content="{Binding Path=Word, UpdateSourceTrigger=PropertyChanged}" Margin="140,0,109,0"/>
 
         <xctk:ColorPicker Name="ClrPcker_Background" SelectedColorChanged="ClrPcker_Background_SelectedColorChanged_1" Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center" Height="22" Width="100"/>
 
+
         <Border Grid.Row="1" Grid.Column="1" Margin ="10,10,10,10" BorderBrush="Black" BorderThickness ="2.5">
             <Canvas Name="CanvasForPaint" MouseDown="CanvasForPaint_MouseDown" MouseMove="CanvasForPaint_MouseMove">
                 <Canvas.Background>

Client/Views/GameWindow.xaml.cs

@@ -15,7 +15,7 @@ namespace Client.Views
         private ViewModelGame viewModel;
         public GameWindow()
         {
-            this.viewModel = new ViewModelGame();
+            this.viewModel = new ViewModelGame(this);
             DataContext = this.viewModel;
             Closing += this.viewModel.LeaveGame;
             InitializeComponent();

Client/Views/MainWindow.xaml

@@ -57,7 +57,8 @@
                 <GridView x:Name="grdList">
                     <GridViewColumn Header="Lobby ID" DisplayMemberBinding="{Binding ID}" Width="70"/>
                     <GridViewColumn Header="Players in" DisplayMemberBinding="{Binding PlayersIn}" Width="70"/>
-                    <GridViewColumn Header="max players available" DisplayMemberBinding="{Binding MaxPlayers}"/>
+                    <GridViewColumn Header="max players available" DisplayMemberBinding="{Binding MaxPlayers}" Width="150"/>
+                    <GridViewColumn Header="joinable" DisplayMemberBinding="{Binding LobbyJoinable}"/>
                 </GridView>
             </ListView.View>
         </ListView>

Server/Models/ServerClient.cs

@@ -15,15 +15,17 @@ using static SharedClientServer.JSONConvert;
 
 namespace Server.Models
 {
+    public delegate void Callback();
     class ServerClient : ObservableObject
     {
         private TcpClient tcpClient;
         private NetworkStream stream;
-        private byte[] buffer = new byte[1024];
+        private byte[] buffer = new byte[2048];
-        private byte[] totalBuffer = new byte[1024];
+        private byte[] totalBuffer = new byte[2048];
         private int totalBufferReceived = 0;
         public User User { get; set; }
         private ServerCommunication serverCom = ServerCommunication.INSTANCE;
+        private Callback OnMessageReceivedOk;
 
 
         /// <summary>
@@ -52,7 +54,7 @@ namespace Server.Models
             {
                 int bytesReceived = this.stream.EndRead(ar);
 
-                if (totalBufferReceived + bytesReceived > 1024)
+                if (totalBufferReceived + bytesReceived > 2048)
                 {
                     throw new OutOfMemoryException("buffer is too small!");
                 }
@@ -94,6 +96,7 @@ namespace Server.Models
             }
             catch (IOException e)
             {
+                Debug.WriteLine("[SERVERCLIENT] Client disconnected! exception was " + e.Message);
                 tcpClient.Close();
                 ServerCommunication.INSTANCE.ServerClientDisconnect(this);
             }
@@ -149,15 +152,57 @@ namespace Server.Models
                     LobbyIdentifier l = JSONConvert.GetLobbyIdentifier(payload);
                     handleLobbyMessage(payload, l);
                     break;
+
                 case JSONConvert.CANVAS:
-                    Debug.WriteLine("GOT A MESSAGE FROM THE CLIENT ABOUT THE CANVAS!!!");
+                    
+                    int typeToCheck = JSONConvert.GetCanvasMessageType(payload);
+                    switch (typeToCheck)
+                    {
+                        case JSONConvert.CANVAS_WRITING:
+                            dynamic canvasData = new
+                            {
+                                canvasType = typeToCheck,
+                                coords = JSONConvert.getCoordinates(payload),
+                                color = JSONConvert.getCanvasDrawingColor(payload)
+                            };
+                            serverCom.SendToLobby(serverCom.GetLobbyForUser(User),JSONConvert.GetMessageToSend(JSONConvert.CANVAS,canvasData));
+                            break;
+
+                        case JSONConvert.CANVAS_RESET:
+                            dynamic canvasDataForReset = new
+                            {
+                                type = JSONConvert.GetCanvasMessageType(payload)
+                            };
+                            serverCom.SendToLobby(serverCom.GetLobbyForUser(User), JSONConvert.GetMessageToSend(CANVAS, canvasDataForReset));
+                            break;
+                    }
+                    
+
                     // canvas data
                     // todo send canvas data to all other serverclients in lobby
                     break;
 
+                case JSONConvert.GAME:
+                    Debug.WriteLine("[SERVERCLIENT] Got a message about the game logic");
+                    string command = JSONConvert.GetGameCommand(payload);
+                    switch (command)
+                    {
+                        case "startGame":
+                            int lobbyID = JSONConvert.GetStartGameLobbyID(payload);
+                            serverCom.CloseALobby(lobbyID);
+                            ServerCommunication.INSTANCE.sendToAll(JSONConvert.ConstructLobbyListMessage(ServerCommunication.INSTANCE.lobbies.ToArray()));
+                            break;
+                    }
+
+                    break;
                 case JSONConvert.RANDOMWORD:
                     //Flag byte for receiving the random word.
                     break;
+                case JSONConvert.MESSAGE_RECEIVED:
+                    // we now can send a new message
+                    OnMessageReceivedOk?.Invoke();
+                    break;
+
                 default:
                     Debug.WriteLine("[SERVER] Received weird identifier: " + id);
                     break;
@@ -181,21 +226,19 @@ namespace Server.Models
                     break;
                 case LobbyIdentifier.JOIN:
                     int id = JSONConvert.GetLobbyID(payload);
-                    ServerCommunication.INSTANCE.JoinLobby(this.User, id);
-                    sendMessage(JSONConvert.ConstructLobbyJoinSuccessMessage());
-
                     bool isHost;
                     ServerCommunication.INSTANCE.JoinLobby(this.User,id, out isHost);
                     sendMessage(JSONConvert.ConstructLobbyJoinSuccessMessage(isHost));
                     ServerCommunication.INSTANCE.sendToAll(JSONConvert.ConstructLobbyListMessage(ServerCommunication.INSTANCE.lobbies.ToArray()));
-
+                    OnMessageReceivedOk = () =>
-                    //Task.Run(SendLobbyData);
-
-                    serverCom.sendToAll(JSONConvert.GetMessageToSend(JSONConvert.RANDOMWORD, new
                     {
-                        id = serverCom.GetLobbyForUser(User).ID,
+                        serverCom.sendToAll(JSONConvert.GetMessageToSend(JSONConvert.RANDOMWORD, new
-                        word = JSONConvert.SendRandomWord("WordsForGame.json")
+                        {
-                    }));
+                            id = serverCom.GetLobbyForUser(User).ID,
+                            word = JSONConvert.SendRandomWord("WordsForGame.json")
+                        }));
+                        OnMessageReceivedOk = null;
+                    };
                     break;
                 case LobbyIdentifier.LEAVE:
                     id = JSONConvert.GetLobbyID(payload);

Server/Models/ServerCommunication.cs

@@ -150,6 +150,21 @@ namespace Server.Models
             }
         }
 
+        public void SendCanvasDataToLobby(Lobby lobby, string username, byte[] message)
+        {
+            foreach (Lobby l in lobbies)
+            {
+                if (l == lobby)
+                {
+                    foreach (ServerClient sc in serverClientsInlobbies[l])
+                    {
+                        sc.sendMessage(message);
+                    }
+                    break;
+                }
+            }
+        }
+
         public Lobby GetLobbyForUser(User user)
         {
             foreach (Lobby l in lobbies)
@@ -255,5 +270,16 @@ namespace Server.Models
                 }
             }
         }
+
+        public void CloseALobby(int lobbyID)
+        {
+            foreach (Lobby lobby in lobbies)
+            {
+                if (lobby.ID == lobbyID)
+                {
+                    lobby.LobbyJoinable = false;
+                }
+            }
+        }
     }
 }

SharedClientServer/ClientServerUtil.cs

@@ -7,6 +7,8 @@ using System.Text;
 namespace SharedClientServer
 {
     public delegate void Callback();
+
+
     class ClientServerUtil
     {
         // creates a message array to send to the server or to clients

SharedClientServer/JSONConvert.cs

@@ -1,13 +1,12 @@
-using Client;
+using Client;
-using Microsoft.VisualBasic.CompilerServices;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
-using System.IO;
 using System.Linq;
 using System.Text;
+using System.Windows.Media;
 
 namespace SharedClientServer
 {
@@ -17,7 +16,13 @@ namespace SharedClientServer
         public const byte MESSAGE = 0x02;
         public const byte LOBBY = 0x03;
         public const byte CANVAS = 0x04;
-        public const byte RANDOMWORD = 0x05;
+        public const byte GAME = 0x05;
+        public const byte MESSAGE_RECEIVED = 0x06;
+        public const byte RANDOMWORD = 0x07;
+
+        public const int CANVAS_WRITING = 0;
+        public const int CANVAS_RESET = 1;
+        
 
         public enum LobbyIdentifier
         {
@@ -28,9 +33,10 @@ namespace SharedClientServer
             LIST,
             REQUEST
         }
+
         public static (string,string) GetUsernameAndMessage(byte[] json)
         {
-            string msg = Encoding.ASCII.GetString(json);
+            string msg = Encoding.UTF8.GetString(json);
             dynamic payload = JsonConvert.DeserializeObject(msg);
             
             return (payload.username, payload.message);
@@ -38,7 +44,7 @@ namespace SharedClientServer
 
         public static string GetUsernameLogin(byte[] json)
         {
-            dynamic payload = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json));
+            dynamic payload = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(json));
             return payload.username;
         }
 
@@ -86,6 +92,7 @@ namespace SharedClientServer
             });
         }
 
+
         public static byte[] ConstructLobbyJoinMessage(int lobbyID)
         {
             return GetMessageToSend(LOBBY, new
@@ -105,13 +112,13 @@ namespace SharedClientServer
         }
         public static LobbyIdentifier GetLobbyIdentifier(byte[] json)
         {
-            dynamic payload = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json));
+            dynamic payload = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(json));
             return payload.identifier;
         }
 
         public static Lobby[] GetLobbiesFromMessage(byte[] json)
         {
-            dynamic payload = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json));
+            dynamic payload = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(json));
             JArray lobbiesArray = payload.lobbies;
             Debug.WriteLine("[JSONCONVERT] got lobbies from message" + lobbiesArray.ToString());
             Lobby[] lobbiesTemp = lobbiesArray.ToObject<Lobby[]>();
@@ -125,13 +132,13 @@ namespace SharedClientServer
 
         public static int GetLobbyID(byte[] json)
         {
-            dynamic payload = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json));
+            dynamic payload = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(json));
             return payload.id;
         }
 
         public static Lobby GetLobby(byte[] json)
         {
-            dynamic payload = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json));
+            dynamic payload = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(json));
             JObject dynamicAsObject = payload.lobby;
             return dynamicAsObject.ToObject<Lobby>();
         }
@@ -144,11 +151,79 @@ namespace SharedClientServer
 
         public static bool GetLobbyJoinIsHost(byte[] json)
         {
-            dynamic payload = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json));
+            dynamic payload = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(json));
             return payload.host;
         }
 
         #endregion
+
+        public static byte[] ConstructCanvasDataSend(int typeToSend, double[][] buffer, Color colorToSend)
+        {
+            
+            return GetMessageToSend(CANVAS, new
+            {
+                canvasType = typeToSend,
+                coords = buffer,
+                color = colorToSend
+            }); ;
+        }
+
+        public static byte[] ConstructDrawingCanvasData(double[][] buffer, Color colorToSend)
+        {
+            return GetMessageToSend(CANVAS, new
+            {
+                canvasType = CANVAS_WRITING,
+                coords = buffer,
+                color = colorToSend
+            });
+        }
+
+        public static int GetCanvasMessageType(byte[] json)
+        {
+            dynamic d = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(json));
+            return d.canvasType;
+        }
+
+        public static double[][] getCoordinates(byte[] payload)
+        {
+            Debug.WriteLine("got coords " + Encoding.UTF8.GetString(payload));
+            dynamic json = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(payload));
+            JArray coordinatesArray = json.coords;
+
+            double[][] coordinates = coordinatesArray.ToObject<double[][]>();
+
+            return coordinates;
+        }
+
+        public static Color getCanvasDrawingColor(byte[] payload)
+        {
+            dynamic json = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(payload));
+            Color color = json.color;
+            return color;
+        }
+
+        public static byte[] ConstructGameStartData(int lobbyID)
+        {
+            string startGame = "startGame";
+            return GetMessageToSend(GAME, new
+            {
+                command = startGame,
+                lobbyToStart = lobbyID
+            }); ;
+        }
+
+        public static string GetGameCommand(byte[] payload)
+        {
+            dynamic json = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(payload));
+            return json.command;
+        }
+
+        public static int GetStartGameLobbyID(byte[] payload)
+        {
+            dynamic json = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(payload));
+            return json.lobbyToStart;
+        }
+
         /// <summary>
         /// constructs a message that can be sent to the clients or server
         /// </summary>
@@ -158,7 +233,8 @@ namespace SharedClientServer
         public static byte[] GetMessageToSend(byte identifier, dynamic payload)
         {
             // convert the dynamic to bytes
-            byte[] payloadBytes = Encoding.ASCII.GetBytes(JsonConvert.SerializeObject(payload));
+            string json = JsonConvert.SerializeObject(payload);
+            byte[] payloadBytes = Encoding.UTF8.GetBytes(json);
             // make the array that holds the message and copy the payload into it with the first spot containing the identifier
             byte[] res = new byte[payloadBytes.Length + 5];
             // put the payload in the res array
@@ -169,8 +245,8 @@ namespace SharedClientServer
             Array.Copy(BitConverter.GetBytes(payloadBytes.Length+5),0,res,0,4);
             return res;
         }
-    
+      
-        /*
+             /*
          * This method sends a random word from the json file, this happens when the client joins a lobby.
          */
         public static string SendRandomWord(string filename)
@@ -203,5 +279,7 @@ namespace SharedClientServer
             dynamic payload = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json));
             return payload.word;
         }
+
+        
     }
 }

SharedClientServer/Lobby.cs

@@ -14,6 +14,7 @@ namespace Client
         private int _id;
         private int _playersIn;
         private int _maxPlayers;
+        private bool _lobbyJoinable;
         //private List<string> _usernames;
         private List<User> _users;
 
@@ -34,6 +35,7 @@ namespace Client
             _maxPlayers = maxPlayers;
             //_usernames = new List<string>();
             _users = new List<User>();
+            _lobbyJoinable = true;
         }
 
         public void AddUser(string username, out bool succes)
@@ -41,7 +43,7 @@ namespace Client
             succes = false;
             if (_users.Count < _maxPlayers)
             {
-                _users.Add(new User(username, 0, false));
+                _users.Add(new User(username, 0, false, false));
                 succes = true;
             }
         }
@@ -87,6 +89,11 @@ namespace Client
             set { _users = value; }
         }
 
+        public bool LobbyJoinable
+        {
+            get { return _lobbyJoinable; }
+            set { _lobbyJoinable = value; }
+        }
 
     }
 }

SharedClientServer/User.cs

@@ -11,14 +11,16 @@ namespace SharedClientServer
         private string _username;
         private int _score;
         private bool _host;
+        private bool _turnToDraw;
         private string _message;
 
         [JsonConstructor]
-        public User(string username, int score, bool host)
+        public User(string username, int score, bool host, bool turnToDraw)
         {
             _username = username;
             _score = score;
             _host = host;
+            _turnToDraw = turnToDraw;
         }
 
         public User(string username)
@@ -26,6 +28,7 @@ namespace SharedClientServer
             _username = username;
             _score = 0;
             _host = false;
+            _turnToDraw = false;
         }
 
         public static bool operator ==(User u1, User u2)
@@ -81,5 +84,11 @@ namespace SharedClientServer
             get { return _host; }
             set { _host = value; }
         }
+
+        public bool TurnToDraw
+        {
+            get { return _turnToDraw; }
+            set { _turnToDraw = value; }
+        }
     }
 }