improve restart code after port change

MediaBrowser.Common.Implementations/BaseApplicationHost.cs

@@ -201,7 +201,7 @@ namespace MediaBrowser.Common.Implementations
 
                 Task.Run(() => ConfigureAutoRunAtStartup());
 
-                ConfigurationManager.ConfigurationUpdated += ConfigurationManager_ConfigurationUpdated;
+                ConfigurationManager.ConfigurationUpdated += OnConfigurationUpdated;
             });
         }
 
@@ -459,7 +459,7 @@ namespace MediaBrowser.Common.Implementations
         /// <param name="sender">The source of the event.</param>
         /// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
         /// <exception cref="System.NotImplementedException"></exception>
-        void ConfigurationManager_ConfigurationUpdated(object sender, EventArgs e)
+        protected virtual void OnConfigurationUpdated(object sender, EventArgs e)
         {
             ConfigureAutoRunAtStartup();
         }

MediaBrowser.Server.Implementations/ServerManager/ServerManager.cs

@@ -114,6 +114,8 @@ namespace MediaBrowser.Server.Implementations.ServerManager
             _applicationHost = applicationHost;
             ConfigurationManager = configurationManager;
             _kernel = kernel;
+
+            ConfigurationManager.ConfigurationUpdated += ConfigurationUpdated;
         }
 
         /// <summary>
@@ -127,8 +129,6 @@ namespace MediaBrowser.Server.Implementations.ServerManager
             {
                 ReloadExternalWebSocketServer();
             }
-
-            ConfigurationManager.ConfigurationUpdated += ConfigurationUpdated;
         }
 
         /// <summary>
@@ -352,16 +352,6 @@ namespace MediaBrowser.Server.Implementations.ServerManager
         void ConfigurationUpdated(object sender, EventArgs e)
         {
             HttpServer.EnableHttpRequestLogging = ConfigurationManager.Configuration.EnableHttpLevelLogging;
-
-            if (!string.Equals(HttpServer.UrlPrefix, _kernel.HttpServerUrlPrefix, StringComparison.OrdinalIgnoreCase))
-            {
-                _applicationHost.NotifyPendingRestart();
-            }
-
-            else if (!SupportsNativeWebSocket && ExternalWebSocketServer != null && ExternalWebSocketServer.Port != ConfigurationManager.Configuration.LegacyWebSocketPortNumber)
-            {
-                _applicationHost.NotifyPendingRestart();
-            }
         }
 
         /// <summary>

MediaBrowser.ServerApplication/ApplicationHost.cs

@@ -431,6 +431,27 @@ namespace MediaBrowser.ServerApplication
             }
         }
 
+        /// <summary>
+        /// Called when [configuration updated].
+        /// </summary>
+        /// <param name="sender">The sender.</param>
+        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
+        protected override void OnConfigurationUpdated(object sender, EventArgs e)
+        {
+            base.OnConfigurationUpdated(sender, e);
+
+            if (!string.Equals(HttpServer.UrlPrefix, ServerKernel.HttpServerUrlPrefix, StringComparison.OrdinalIgnoreCase))
+            {
+                NotifyPendingRestart();
+            }
+
+            else if (!ServerManager.SupportsNativeWebSocket && ServerManager.WebSocketPortNumber != ServerConfigurationManager.Configuration.LegacyWebSocketPortNumber)
+            {
+                NotifyPendingRestart();
+            }
+
+        }
+
         /// <summary>
         /// Restarts this instance.
         /// </summary>