better progress display

MediaBrowser.Server.Implementations/HttpServer/HttpServer.cs

@@ -284,6 +284,8 @@ namespace MediaBrowser.Server.Implementations.HttpServer
 
             RaiseReceiveWebRequest(context);
 
+            await Task.Run(() =>
+            {
                 try
                 {
                     ProcessRequest(context);
@@ -291,49 +293,36 @@ namespace MediaBrowser.Server.Implementations.HttpServer
                 catch (InvalidOperationException ex)
                 {
                     HandleException(context.Response, ex, 422);
-
-                throw;
                 }
                 catch (ResourceNotFoundException ex)
                 {
                     HandleException(context.Response, ex, 404);
-
-                throw;
                 }
                 catch (FileNotFoundException ex)
                 {
                     HandleException(context.Response, ex, 404);
-
-                throw;
                 }
                 catch (DirectoryNotFoundException ex)
                 {
                     HandleException(context.Response, ex, 404);
-
-                throw;
                 }
                 catch (UnauthorizedAccessException ex)
                 {
                     HandleException(context.Response, ex, 401);
-
-                throw;
                 }
                 catch (ArgumentException ex)
                 {
                     HandleException(context.Response, ex, 400);
-
-                throw;
                 }
                 catch (Exception ex)
                 {
                     HandleException(context.Response, ex, 500);
-
-                throw;
                 }
                 finally
                 {
                     context.Response.Close();
                 }
+            }).ConfigureAwait(false);
         }
 
         /// <summary>