Don't crash when no tcp connection can be created.

qController.Standard/Classes/Communication/QClient.cs

@@ -13,6 +13,7 @@ namespace qController.Communication
         public QParser qParser;
         string Address;
         int Port;
+        public bool connected;
 
         public QClient(string address, int port)
         {
@@ -20,8 +21,7 @@ namespace qController.Communication
             Port = port;
             qParser = new QParser();
             tcpClient = new TCPClient(Address, Port);
-            tcpClient.Connect();
+            connected = tcpClient.Connect();
-
             tcpClient.MessageReceived += OnMessageReceived;
 
         }

qController.Standard/Classes/Communication/QParser.cs

@@ -8,70 +8,7 @@ using Serilog;
 
 namespace qController.Communication
 {
-    public class CueEventArgs : EventArgs
-    {
-        public QCue Cue
-        {
-            get;
-            set;
-        }
-    }
     
-    public class WorkspaceEventArgs : EventArgs
-    {
-        public QWorkspace UpdatedWorkspace
-        {
-            get;
-            set;
-        }
-    }
-
-    public class PlaybackPositionArgs : EventArgs
-    {
-        public string PlaybackPosition
-        {
-            get;
-            set;
-        }
-    }
-
-    public class ConnectEventArgs : EventArgs
-    {
-        public string Status
-        {
-            get;
-            set;
-        }
-
-        public string WorkspaceId
-        {
-            get;
-            set;
-        }
-    }
-
-    public class WorkspaceInfoArgs : EventArgs
-    {
-        public List<QWorkspaceInfo> WorkspaceInfo
-        {
-            get;
-            set;
-        }
-    }
-
-    public class ChildrenEventArgs : EventArgs
-    {
-        public string cue_id
-        {
-            get;
-            set;
-        }
-        public List<QCue> children
-        {
-            get;
-            set;
-        }
-    }
 
     public class QParser
     {
@@ -80,15 +17,7 @@ namespace qController.Communication
            
         }
 
-        public delegate void SelectedCueUpdatedHandler(object source, CueEventArgs args);
+        
-        public delegate void WorkspaceUpdatedHandler(object source, WorkspaceEventArgs args);
-        public delegate void CueInfoUpdatedHandler(object source, CueEventArgs args);
-        public delegate void PlaybackPositionUpdatedHandler(object source, PlaybackPositionArgs args);
-        public delegate void ConnectionStatusHandler(object source, ConnectEventArgs args);
-        public delegate void ChildrenUpdateHandler(object source, ChildrenEventArgs args);
-        public delegate void WorkspaceDisconnectHandler(object source, EventArgs args);
-        public delegate void WorkspaceInfoHandler(object source, WorkspaceInfoArgs args);
-        public delegate void WorkspaceLoadErrorHandler(object source, WorkspaceEventArgs args);
         public event WorkspaceLoadErrorHandler WorkspaceLoadError;
         public event WorkspaceInfoHandler WorkspaceInfoReceived;
         public event WorkspaceDisconnectHandler WorkspaceDisconnect;
@@ -214,50 +143,41 @@ namespace qController.Communication
 
         protected virtual void OnWorkspaceUpdated(QWorkspace workspace)
         {
-            if (WorkspaceUpdated != null)
+            WorkspaceUpdated?.Invoke(this, new WorkspaceEventArgs() { UpdatedWorkspace = workspace });
-                WorkspaceUpdated(this, new WorkspaceEventArgs() { UpdatedWorkspace = workspace });
         }
         protected virtual void OnSelectedCueUpdated(QCue cue)
         {
-            if (SelectedCueUpdated != null)
+            SelectedCueUpdated?.Invoke(this, new CueEventArgs() { Cue = cue });
-                SelectedCueUpdated(this, new CueEventArgs() { Cue = cue });
         }
 
         protected virtual void OnCueInfoUpdated(QCue cue)
         {
-            if (CueInfoUpdated != null)
+            CueInfoUpdated?.Invoke(this, new CueEventArgs() { Cue = cue });
-                CueInfoUpdated(this, new CueEventArgs() { Cue = cue });
         }
 
         protected virtual void OnPlaybackPositionUpdated(string id)
         {
-            if (PlaybackPositionUpdated != null)
+            PlaybackPositionUpdated?.Invoke(this, new PlaybackPositionArgs() { PlaybackPosition = id });
-                PlaybackPositionUpdated(this, new PlaybackPositionArgs() { PlaybackPosition = id });
         }
         protected virtual void OnConnectionStatusChanged(string status, string workspace_id)
         {
-            if (ConnectionStatusChanged != null)
+            ConnectionStatusChanged?.Invoke(this, new ConnectEventArgs() { Status = status, WorkspaceId = workspace_id });
-                ConnectionStatusChanged(this, new ConnectEventArgs() { Status = status, WorkspaceId = workspace_id });
         }
         protected virtual void OnChildrenUpdated(string id, List<QCue> cues)
         {
-            if (ChildrenUpdated != null)
+            ChildrenUpdated?.Invoke(this, new ChildrenEventArgs() { cue_id = id, children = cues });
-                ChildrenUpdated(this, new ChildrenEventArgs() { cue_id = id, children = cues });
         }
         protected virtual void OnWorkspaceDisconnect()
         {
-            if (WorkspaceDisconnect != null)
+            WorkspaceDisconnect?.Invoke(this, new EventArgs());
-                WorkspaceDisconnect(this, new EventArgs());
         }
         protected virtual void OnWorkspaceInfoReceived(List<QWorkspaceInfo> workspaces)
         {
-            if (WorkspaceInfoReceived != null)
+            WorkspaceInfoReceived?.Invoke(this, new WorkspaceInfoArgs() { WorkspaceInfo = workspaces });
-                WorkspaceInfoReceived(this, new WorkspaceInfoArgs() { WorkspaceInfo = workspaces });
         }
         protected virtual void OnWorkspaceLoadError(string id)
         {
-            if (WorkspaceLoadError != null)
+            WorkspaceLoadError?.Invoke(this, new WorkspaceEventArgs { UpdatedWorkspace = new QWorkspace(id) });
-                WorkspaceLoadError(this, new WorkspaceEventArgs { UpdatedWorkspace = new QWorkspace(id) });
         }
 
     }

qController.Standard/Classes/Communication/SharpOSC/TCPClient.cs

@@ -4,7 +4,6 @@ using System.Linq;
 using System.Text;
 using System.Net.Sockets;
 using System.Threading;
-using Serilog;
 
 namespace SharpOSC
 {
@@ -47,12 +46,22 @@ namespace SharpOSC
             _address = address;
         }
 
-        public void Connect()
+        public bool Connect()
         {
-            client = new TcpClient(Address, Port);
+            try
-            Log.Debug($"TCPClient - connect called for <{Address}:{Port}>");
+            {
-            Thread receivingThread = new Thread(ReceiveLoop);
+                client = new TcpClient(Address, Port);
-            receivingThread.Start();
+                Thread receivingThread = new Thread(ReceiveLoop);
+                receivingThread.Start();
+                //Console.WriteLine($"TCPClient - connected to <{Address}:{Port}>");
+                return true;
+            } 
+            catch (Exception e)
+            {
+                Console.WriteLine(e.Message);
+                return false;
+            }
+            
         }
 
         public void Send(byte[] message)
@@ -68,13 +77,21 @@ namespace SharpOSC
             Send(data);
         }
 
+        public bool IsConnected
+        {
+            get
+            {
+                return client.Connected;
+            }
+        }
+
         public void ReceiveLoop()
         {
             while (client.Connected)
             {
                 Receive();
             }
-            Log.Debug("TCPClient - Receive Loop has exited for some reason");
+            Console.WriteLine("TCPClient - Receive Loop has exited for some reason");
         }
 
         public void Receive()
@@ -102,15 +119,15 @@ namespace SharpOSC
                         //Log.Debug("Thread " + num + ":  Bytes read: " + bytesRead + " - " + Encoding.UTF8.GetString(buffer));
                     } while (netStream.DataAvailable);
 
-                    //Log.Debug("Raw TCP In: " + System.Text.Encoding.UTF8.GetString(responseData.ToArray()));
+                    //Console.WriteLine("Raw TCP In: " + System.Text.Encoding.UTF8.GetString(responseData.ToArray()));
                     OscMessage response = (OscMessage)OscPacket.GetPacket(responseData.Skip(1).ToArray());
                     //watch.Stop();
-                    //Log.Debug($"TCPCLient - message receive took {watch.ElapsedMilliseconds}ms and {reads} reads");
+                    //Console.WriteLine($"TCPCLient - message receive took {watch.ElapsedMilliseconds}ms and {reads} reads");
                     OnMessageReceived(response);
                 }
             } catch(Exception e)
             {
-                //Log.Debug("TCPSENDER - Receive Exception: " + e.ToString());
+                //Console.WriteLine("TCPSENDER - Receive Exception: " + e.ToString());
             }
         }
 
@@ -150,8 +167,7 @@ namespace SharpOSC
 
         protected virtual void OnMessageReceived(OscMessage msg)
         {
-            if (MessageReceived != null)
+            MessageReceived?.Invoke(this, new MessageEventArgs() { Message = msg });
-                MessageReceived(this, new MessageEventArgs() { Message = msg });
         }
     }
 }

qController.Standard/Pages/ControlPage.xaml.cs

@@ -40,6 +40,11 @@ namespace qController
 
             InitGUI();
 
+            if (!qController.qClient.connected)
+            {
+                App.showToast("Error connecting...make sure QLab is running");
+                Back();
+            }
             qController.KickOff();
         }
 
@@ -220,7 +225,8 @@ namespace qController
 
         void Back()
         {
-            qController.Kill();
+            if(qController.qClient.connected)
+                qController.Kill();
             App.rootPage.MenuItemSelected -= OnMenuItemSelected;
             Device.BeginInvokeOnMainThread(() =>
             {

qController.Standard/qController.csproj

@@ -83,11 +83,9 @@
     <EmbeddedResource Include="App.xaml" />
   </ItemGroup>-->
   <ItemGroup>
-    <Folder Include="Classes\" />
     <Folder Include="Pages\" />
     <Folder Include="Classes\QItems\" />
     <Folder Include="Classes\Cell\" />
-    <Folder Include="Classes\Communication\" />
     <Folder Include="Classes\Settings\" />
     <Folder Include="Classes\Dialogs\" />
     <Folder Include="Classes\Buttons\" />