Replace redundant xml comments with inheritdoc. Make async changes to CloseSocket.

Emby.Dlna/PlayTo/PlayToController.cs

@@ -889,9 +889,9 @@ namespace Emby.Dlna.PlayTo
             return Task.CompletedTask;
         }
 
-        public void CloseAllWebSockets(CancellationToken cancellationToken)
+        /// <inheritdoc />
+        public async Task CloseAllWebSockets(CancellationToken cancellationToken)
         {
-            throw new NotImplementedException();
         }
 
         private class StreamParams

Emby.Server.Implementations/HttpServer/WebSocketConnection.cs

@@ -231,13 +231,10 @@ namespace Emby.Server.Implementations.HttpServer
                 CancellationToken.None);
         }
 
-        /// <summary>
-        /// Gracefully closes the socket.
-        /// </summary>
-        /// <param name="cancellationToken">The cancellation token.</param>
-        public void CloseSocket(CancellationToken cancellationToken)
+        /// <inheritdoc />
+        public async Task CloseSocket(CancellationToken cancellationToken)
         {
-            _socket.CloseOutputAsync(WebSocketCloseStatus.NormalClosure, "System Shutdown", cancellationToken);
+            await _socket.CloseOutputAsync(WebSocketCloseStatus.NormalClosure, "System Shutdown", cancellationToken).ConfigureAwait(false);
         }
 
         /// <inheritdoc />

Emby.Server.Implementations/Session/SessionManager.cs

@@ -1363,7 +1363,7 @@ namespace Emby.Server.Implementations.Session
         {
             CheckDisposed();
 
-            CloseAllWebSockets(cancellationToken);
+            CloseAllWebSockets(cancellationToken).ConfigureAwait(false);
 
             return SendMessageToSessions(Sessions, SessionMessageType.ServerShuttingDown, string.Empty, cancellationToken);
         }
@@ -1372,13 +1372,13 @@ namespace Emby.Server.Implementations.Session
         /// Gracefully closes all web sockets in all sessions.
         /// </summary>
         /// <param name="cancellationToken">The cancellation token.</param>
-        private void CloseAllWebSockets(CancellationToken cancellationToken)
+        private async Task CloseAllWebSockets(CancellationToken cancellationToken)
         {
             foreach (var session in Sessions)
             {
                 foreach (var sessionController in session.SessionControllers)
                 {
-                    sessionController.CloseAllWebSockets(cancellationToken);
+                    await sessionController.CloseAllWebSockets(cancellationToken).ConfigureAwait(false);
                 }
             }
         }

Emby.Server.Implementations/Session/WebSocketController.cs

@@ -88,15 +88,12 @@ namespace Emby.Server.Implementations.Session
                 cancellationToken);
         }
 
-        /// <summary>
-        /// Gracefully closes all web sockets.
-        /// </summary>
-        /// <param name="cancellationToken">The cancellation token.</param>
-        public void CloseAllWebSockets(CancellationToken cancellationToken)
+        /// <inheritdoc />
+        public async Task CloseAllWebSockets(CancellationToken cancellationToken)
         {
             foreach (var socket in _sockets)
             {
-                socket.CloseSocket(cancellationToken);
+                await socket.CloseSocket(cancellationToken).ConfigureAwait(false);
             }
         }
 

MediaBrowser.Controller/Net/IWebSocketConnection.cs

@@ -62,7 +62,8 @@ namespace MediaBrowser.Controller.Net
         /// <summary>
         /// Gracefully closes the socket.
         /// </summary>
+        /// <returns>Task.</returns>
         /// <param name="cancellationToken">The cancellation token.</param>
-        void CloseSocket(CancellationToken cancellationToken);
+        Task CloseSocket(CancellationToken cancellationToken);
     }
 }

MediaBrowser.Controller/Session/ISessionController.cs

@@ -38,6 +38,7 @@ namespace MediaBrowser.Controller.Session
         /// Gracefully closes all web sockets.
         /// </summary>
         /// <param name="cancellationToken">The cancellation token.</param>
-        void CloseAllWebSockets(CancellationToken cancellationToken);
+        /// <returns>A task.</returns>
+        Task CloseAllWebSockets(CancellationToken cancellationToken);
     }
 }