授权在ASP.NET Core 2.1的Signalr中不起作用

我按照this tutorial将我的项目从ASP.Net Core 2.0升级到ASP.NET Core 2.1 .

一切都很好，直到我将Signar Core 2.1应用到我的项目中 .

这是我的 Startup.cs

public class Startup
{
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public IConfiguration Configuration { get; }

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddSingleton<IAuthorizationHandler, SolidAccountRequirementHandler>();

        services.AddCors(
            options => options.AddPolicy("AllowCors",
                builder =>
                {
                    builder
                        .AllowAnyOrigin()
                        .AllowCredentials()
                        .AllowAnyHeader()
                        .AllowAnyMethod();
                })
        );

        services.AddAuthorization(x =>
        {
            x.AddPolicy("MainPolicy", builder =>
            {
                builder.Requirements.Add(new SolidAccountRequirement());
            });
        });

        services.AddSignalR();

        #region Mvc builder

        var authenticationBuilder = services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme);

        authenticationBuilder.AddJwtBearer(o =>
        {
            // You also need to update /wwwroot/app/scripts/app.js
            o.SecurityTokenValidators.Clear();

            // Initialize token validation parameters.
            var tokenValidationParameters = new TokenValidationParameters();
            tokenValidationParameters.ValidAudience = "audience";
            tokenValidationParameters.ValidIssuer = "issuer";
            tokenValidationParameters.IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes("SigningKey"));
            tokenValidationParameters.ValidateLifetime = false;

            o.TokenValidationParameters = tokenValidationParameters;
        });

        // Construct mvc options.
        services.AddMvc(mvcOptions =>
            {
                ////only allow authenticated users
                var policy = new AuthorizationPolicyBuilder()
                    .RequireAuthenticatedUser()
                    .AddAuthenticationSchemes(JwtBearerDefaults.AuthenticationScheme)
                    .AddRequirements(new SolidAccountRequirement())
                    .Build();

                mvcOptions.Filters.Add(new AuthorizeFilter(policy));
            })
            .AddJsonOptions(options =>
            {
                options.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
            })
            .SetCompatibilityVersion(CompatibilityVersion.Version_2_1); ;

        #endregion
    }

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

        //app.UseHttpsRedirection();
        app.UseCors("AllowCors");

        app.UseSignalR(routes =>
        {
            routes.MapHub<ChatHub>("/chathub");
        });

        app.UseMvc();
    }
}

这是我的 SolidRequirementHandler

public class SolidAccountRequirementHandler : AuthorizationHandler<SolidAccountRequirement>
{
    protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, SolidAccountRequirement requirement)
    {
        context.Succeed(requirement);
        return Task.CompletedTask;
    }
}

这是我的 ChatHub.cs ：

public class ChatHub : Hub
{
    [Authorize(Policy = "MainPolicy")]
    public override Task OnConnectedAsync()
    {
        return base.OnConnectedAsync();
    }
}

当我使用我的AngularJS应用程序连接到 ChatHub 时，我会调用 MainPolicy . 但是，在没有检查请求标识的情况下调用了 OnConnectedAsync() 函数 .

MVC控制器的策略成功应用，但Signalr没有 .

有人可以帮我吗？

谢谢，