C＃核心2 OAuth应用程序。优步API

Question

我正在尝试学习AuthO2应用程序，并尝试使用实际应用程序。如果有人可以指导我或帮助我。当前使用UBER API获取用户个人资料。 appsettings.json

  "Uber": {
    "ClientId": "myClientId",
    "ClientSecret": "myClientSecret"
  }

Startup.cs

using System;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Security.Claims;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authentication.Cookies;
using Microsoft.AspNetCore.Authentication.OAuth;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Newtonsoft.Json.Linq;
using UberAuth2.Data;
using UberAuth2.Models;
using UberAuth2.Services;

namespace UberAuth2
{
    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.AddDbContext<ApplicationDbContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

            services.AddIdentity<ApplicationUser, IdentityRole>()
                .AddEntityFrameworkStores<ApplicationDbContext>()
                .AddDefaultTokenProviders();

            // Add application services.
            services.AddTransient<IEmailSender, EmailSender>();

            services.AddMvc();
            services.AddAuthentication(options =>
            {
                options.DefaultAuthenticateScheme = CookieAuthenticationDefaults.AuthenticationScheme;
                options.DefaultSignInScheme = CookieAuthenticationDefaults.AuthenticationScheme;
                options.DefaultChallengeScheme = "Uber";
            })
               .AddCookie()
               .AddOAuth("Uber", options =>
               {
                   options.ClientId = Configuration["Uber:ClientId"];
                   options.ClientSecret = Configuration["Uber:ClientSecret"];
                   options.CallbackPath = new PathString("/signin-Uber");

                   options.AuthorizationEndpoint = "https://login.uber.com/oauth/v2/authorize";
                   options.TokenEndpoint = "https://login.uber.com/oauth/v2/token";
                   options.UserInformationEndpoint = "https://api.uber.com/v1.2/me";

                   options.ClaimActions.MapJsonKey(ClaimTypes.NameIdentifier, "id");
                   options.ClaimActions.MapJsonKey(ClaimTypes.Name, "name");
                   options.ClaimActions.MapJsonKey("urn:uber:login", "login");, "avatar_url");

                   options.Events = new OAuthEvents
                   {
                       OnCreatingTicket = async context =>
                       {
                           var request = new HttpRequestMessage(HttpMethod.Get, context.Options.UserInformationEndpoint);
                           request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
                           request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", context.AccessToken);

                           var response = await context.Backchannel.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, context.HttpContext.RequestAborted);
                           response.EnsureSuccessStatusCode();

                           var user = JObject.Parse(await response.Content.ReadAsStringAsync());

                           context.RunClaimActions(user);
                       }
                   };
               });
        }

        // 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.UseBrowserLink();
                app.UseDeveloperExceptionPage();
                app.UseDatabaseErrorPage();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
            }

            app.UseStaticFiles();

            app.UseAuthentication();

            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "default",
                    template: "{controller=Home}/{action=Index}/{id?}");
            });
        }
    }
}

我收到以下错误页面。我已经设置了正确的重定向页面，我猜我在发送范围时遇到了一个问题（我不知道如何在C＃中实现）。任何帮助或指导将不胜感激