# Microsoft.AspNetCore.Hosting

``` diff
 namespace Microsoft.AspNetCore.Hosting {
     public static class ListenOptionsHttpsExtensions {
+        public static ListenOptions UseHttps(this ListenOptions listenOptions, ServerOptionsSelectionCallback serverOptionsSelectionCallback, object state);
+        public static ListenOptions UseHttps(this ListenOptions listenOptions, ServerOptionsSelectionCallback serverOptionsSelectionCallback, object state, TimeSpan handshakeTimeout);
     }
     public static class WebHostBuilderExtensions {
+        public static IWebHostBuilder UseStartup<TStartup>(this IWebHostBuilder hostBuilder, Func<WebHostBuilderContext, TStartup> startupFactory) where TStartup : class;
     }
 }
```

