信号器集线器未从客户端WPV(.netcore 3.1)接收用户

我有一个成功连接到集线器的WPF客户机,但我无法将客户机的用户传递到集线器。

我的 connection.User?.Identity?.Name IUserIdProvider 退货 .

_connection = new HubConnectionBuilder()
    .WithUrl(viewModel.Endpoint, opts =>
    {
        opts.Credentials = new NetworkCredential("user", "password", "domain");
        opts.UseDefaultCredentials = true;
    })
    .Build();

    public class NameUserIdProvider : IUserIdProvider
    {
        public string GetUserId(HubConnectionContext connection)
        {
            return connection.User?.Identity?.Name;
        }
    }

正如我上面提到的 connection.User?.Identity?.Name; 返回null。

我不知道还能做些什么来将用户名从我的客户端(WPF)传递到我的Hub。

Startup.cs

public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllers();

        services.AddLogging();

        services.AddSingleton<IUserIdProvider, NameUserIdProvider>();

        services.AddSignalR(hubOptions =>
        {
            hubOptions.EnableDetailedErrors = true;
        });

        services.AddScoped<IBuildsService, BuildsService>();

    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }

        app.UseHttpsRedirection();

        app.UseRouting();

        app.UseAuthentication();

        app.UseEndpoints(endpoints =>
        {
            endpoints.MapControllers();
            endpoints.MapHub<SyncCodeHub>("/signalr");
        });
    }

任何帮助都将不胜感激。

编辑:

services.AddAuthentication(IISDefaults.AuthenticationScheme);

编辑:

来自Microsoft文档: