fix: Catch cryptographic exception on server startup and show in GUI

Right now we're crashing on intermittent cryptographic exceptions
thrown on CI. This shouldn't crash the GUI, but should be shown in the
GUI.

Fixes #277

Author: qdot

Buttplug.Apps.WebsocketServerGUI/WebsocketServerControl.xaml.cs

@@ -1,17 +1,18 @@
-using Buttplug.Components.Controls;
-using Buttplug.Components.WebsocketServer;
-using Buttplug.Core;
-using Buttplug.Server;
-using JetBrains.Annotations;
-using Microsoft.Win32;
-using System;
+using System;
 using System.Collections.ObjectModel;
 using System.Net;
 using System.Net.NetworkInformation;
 using System.Net.Sockets;
+using System.Security.Cryptography;
 using System.Timers;
 using System.Windows;
 using System.Windows.Controls;
+using Buttplug.Components.Controls;
+using Buttplug.Components.WebsocketServer;
+using Buttplug.Core;
+using Buttplug.Server;
+using JetBrains.Annotations;
+using Microsoft.Win32;
 using Windows.UI.Notifications;
 
 namespace Buttplug.Apps.WebsocketServerGUI
@@ -107,6 +108,7 @@ private void WebSocketExceptionHandler(object aObj, [NotNull] UnhandledException
             {
                 errorMessage += "\n\nIf your connection is working, you can ignore this message. Otherwise, this could mean that the client/browser has not accepted our SSL certificate. Try hitting the test button on the \"Websocket Server\" tab.";
             }
+
             _currentExceptionMessage = errorMessage;
             _log.LogException(aEx.ExceptionObject as Exception, true, errorMessage);
         }
@@ -204,8 +206,11 @@ public void StartServer()
             }
             catch (SocketException e)
             {
-                _log.LogException(e);
-                MessageBox.Show(e.Message, "Buttplug Error", MessageBoxButton.OK, MessageBoxImage.Exclamation);
+                _log.LogException(e, true, e.Message);
+            }
+            catch (CryptographicException e)
+            {
+                _log.LogException(e, true, e.Message);
             }
         }