Obsolete UseAzureSignalR (#1605)

* Obsolete `IApplicationBuilder.UseAzureSignalR`. Tell user Use `IApplicationBuilder.UseEndpoints()` instead

Co-authored-by: Liangying.Wei <[email protected]>

Author: xingsy97

src/Microsoft.Azure.SignalR/ApplicationBuilderExtensions.cs

@@ -19,6 +19,9 @@ public static class AzureSignalRApplicationBuilderExtensions
         /// <param name="app">The <see cref="IApplicationBuilder"/>.</param>
         /// <param name="configure">A callback to configure the <see cref="ServiceRouteBuilder"/>.</param>
         /// <returns>The same instance of the <see cref="IApplicationBuilder"/> for chaining.</returns>
+#if !NETSTANDARD2_0
+        [Obsolete("IApplicationBuilder.UseAzureSignalR is obsoleted, please use IApplicationBuilder.UseEndpoints() instead.")]
+#endif
         public static IApplicationBuilder UseAzureSignalR(this IApplicationBuilder app, Action<ServiceRouteBuilder> configure)
         {
             var marker = app.ApplicationServices.GetService<AzureSignalRMarkerService>();

test/Microsoft.Azure.SignalR.E2ETests/SignalR/TestStartup.cs

@@ -24,7 +24,7 @@ public TestStartup(IConfiguration configuration)
 
         public void Configure(IApplicationBuilder app)
         {
-            app.UseAzureSignalR(configure =>
+            app.UseEndpoints(configure =>
             {
                 configure.MapHub<TestHub>($"/{nameof(TestHub)}");
             });