Improve network error handling

Author: EarToEarOak

NetRemote/ControlPanel.cs

@@ -102,6 +102,7 @@ private void ServerControl()
                 if (_threadServer == null)
                 {
                     _server = new Server(_parser);
+                    _server.ServerError += OnServerError;
                     _threadServer = new Thread(new ThreadStart(_server.Start));
                     _threadServer.Start();
                 }
@@ -156,5 +157,11 @@ private void OnSerialError(object sender, EventArgs e)
             _threadSerial = null;
             checkSerial.Checked = false;
         }
+
+        private void OnServerError(object sender, EventArgs e)
+        {
+            _threadServer = null;
+            checkNetwork.Checked = false;
+        }
     }
 }

NetRemote/Server.cs

@@ -42,6 +42,8 @@ namespace SDRSharp.NetRemote
 
     class Server
     {
+        public event EventHandler ServerError;
+
         private const int PORT = 3382;
         private const int MAX_CLIENTS = 4;
 
@@ -86,10 +88,13 @@ public void Start()
             }
             catch (SocketException ex)
             {
+                OnServerError();
+
                 if (socket.IsBound)
                     socket.Shutdown(SocketShutdown.Both);
 
-                MessageBox.Show(ex.Message, Info.Title(),
+                string msg = "Network Error:\n" + ex.Message;
+                MessageBox.Show(msg, Info.Title(),
                      MessageBoxButtons.OK, MessageBoxIcon.Error);
             }
             finally
@@ -251,6 +256,15 @@ private void OnTimerAlive(object source, ElapsedEventArgs e)
                     ClientRemove(client);
             }
         }
+
+        protected virtual void OnServerError()
+        {
+            EventHandler handler = ServerError;
+            if (handler != null)
+            {
+                handler(this, EventArgs.Empty);
+            }
+        }
     }