fixes #406 - Dashboard not refreshing

MediaBrowser.ServerApplication/ApplicationHost.cs

@@ -1,4 +1,5 @@
-using MediaBrowser.Api;
+using System.Threading;
+using MediaBrowser.Api;
 using MediaBrowser.Common;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Common.Constants;
@@ -512,6 +513,16 @@ namespace MediaBrowser.ServerApplication
         /// </summary>
         public override void Restart()
         {
+            try
+            {
+                var task = ServerManager.SendWebSocketMessageAsync("ServerRestarting", () => string.Empty, CancellationToken.None);
+                task.Wait();
+            }
+            catch (Exception ex)
+            {
+                Logger.ErrorException("Error sending server restart web socket message", ex);
+            }
+
             App.Instance.Restart();
         }
 
@@ -622,6 +633,16 @@ namespace MediaBrowser.ServerApplication
         /// </summary>
         public override void Shutdown()
         {
+            try
+            {
+                var task = ServerManager.SendWebSocketMessageAsync("ServerShuttingDown", () => string.Empty, CancellationToken.None);
+                task.Wait();
+            }
+            catch (Exception ex)
+            {
+                Logger.ErrorException("Error sending server shutdown web socket message", ex);
+            }
+
             App.Instance.Dispatcher.Invoke(App.Instance.Shutdown);
         }