asp.net - auth0 身份验证问题：HttpContext.Current 为空。此代码路径仅在 ASP.NET 的执行上下文中有效

Question

我在我的应用程序中使用 auth0 进行身份验证、角色和权限。我正在按照以下教程在我的应用程序中实现 auth0，

https://auth0.com/docs/quickstart/webapp/aspnet

它为我创建了登录屏幕，在提供电子邮件 ID 和密码后，它导航到 LoginHandler.ashx。它显示在错误页面下方。

我正在获取令牌、用户 ID 和其他信息，但如何解决处理程序中的此错误？

Answer 1

这是我的解决方案，如果有人遇到同样的问题，

public class LoginCallback : IHttpHandler, IRequiresSessionState
{
    public void ProcessRequest(HttpContext context)
            {
                AuthenticationApiClient client = new AuthenticationApiClient(
                    new Uri(string.Format("https://{0}", ConfigurationManager.AppSettings["auth0:Domain"])));

                var token = client.ExchangeCodeForAccessTokenAsync(new ExchangeCodeRequest
                {
                    ClientId = ConfigurationManager.AppSettings["auth0:ClientId"],
                    ClientSecret = ConfigurationManager.AppSettings["auth0:ClientSecret"],
                    AuthorizationCode = context.Request.QueryString["code"],
                    RedirectUri = context.Request.Url.ToString()
                });

                var profile = client.GetUserInfoAsync(token.Result.AccessToken);

                var user = new List<KeyValuePair<string, object>>
                {
                    new KeyValuePair<string, object>("name", profile.Result.UserName ?? profile.Result.Email),
                    new KeyValuePair<string, object>("email", profile.Result.Email),
                    new KeyValuePair<string, object>("family_name", profile.Result.LastName),
                    new KeyValuePair<string, object>("given_name", profile.Result.FirstName),
                    new KeyValuePair<string, object>("nickname", profile.Result.NickName),
                    new KeyValuePair<string, object>("picture", profile.Result.Picture),
                    new KeyValuePair<string, object>("user_id", profile.Result.UserId),
                    new KeyValuePair<string, object>("id_token", token.Result.IdToken),
                    new KeyValuePair<string, object>("access_token", token.Result.AccessToken),
                    new KeyValuePair<string, object>("refresh_token", token.Result.RefreshToken),
                    new KeyValuePair<string, object>("connection", profile.Result.Identities.First().Connection),
                    new KeyValuePair<string, object>("provider", profile.Result.Identities.First().Provider)
                };

                // NOTE: Uncomment the following code in order to include claims from associated identities
                profile.Result.Identities.ToList().ForEach(i =>
                {
                    user.Add(new KeyValuePair<string, object>(i.Connection + ".access_token", i.AccessToken));
                    user.Add(new KeyValuePair<string, object>(i.Connection + ".provider", i.Provider));
                    user.Add(new KeyValuePair<string, object>(i.Connection + ".user_id", i.UserId));
                });

                // NOTE: uncomment this if you send roles
                 user.Add(new KeyValuePair<string, object>(ClaimTypes.Role, profile.Result.ProviderAttributes["roles"]));

                // NOTE: this will set a cookie with all the user claims that will be converted 
                //       to a ClaimsPrincipal for each request using the SessionAuthenticationModule HttpModule. 
                //       You can choose your own mechanism to keep the user authenticated (FormsAuthentication, Session, etc.)
                FederatedAuthentication.SessionAuthenticationModule.CreateSessionCookie(user);

                if (context.Request.QueryString["state"] != null && context.Request.QueryString["state"].StartsWith("ru="))
                {
                    var state = HttpUtility.ParseQueryString(context.Request.QueryString["state"]);
                    context.Response.Redirect(state["ru"], true);
                }


                context.Response.Redirect("/");

            }
}

Answer 2

我有类似的问题（.NET 4.5），我的异步处理程序一直在工作，直到我将以下行添加到Web.config：

<add key="aspnet:UseTaskFriendlySynchronizationContext" value="false" />

我必须用非异步 IHttpHandler 接口替换所有awaits.Result并实现非异步 IHttpHandler 接口，以使一切恢复正常。我无法从配置中删除设置，因为我需要它Page.RegisterAsyncTask

也许它可以帮助某人