GetExternalLoginInfoAsync总是返回null当我尝试使用Facebook或谷歌登录 [英] GetExternalLoginInfoAsync always return null when i trying login using Facebook or Google

问题描述

我有 OWIN 验证问题。我总是收到来自空值GetExternalLoginInfoAsync（）当我使用Facebook或谷歌试图日志。

I have problem with OWIN Authentication. I always receive null value from GetExternalLoginInfoAsync() when i trying log in using Facebook or Google.

但有一些神秘的情况下。当我打开提琴手..我用这个方法得到正确的数据。

我无法得到的原因。

var loginInfo = await AuthenticationManager.GetExternalLoginInfoAsync();

在此先感谢！

推荐答案

我加入这个code解决我的问题。

I have solved my problem by adding this code

context.RequestContext.HttpContext.Response.SuppressFormsAuthenticationRedirect = true;

在类：

    private class ChallengeResult : HttpUnauthorizedResult
    {
        public ChallengeResult(string provider, string redirectUri)
            : this(provider, redirectUri, null)
        {
        }

        public ChallengeResult(string provider, string redirectUri, string userId)
        {
            LoginProvider = provider;
            RedirectUri = redirectUri;
            UserId = userId;
        }

        public string LoginProvider { get; set; }
        public string RedirectUri { get; set; }
        public string UserId { get; set; }

        public override void ExecuteResult(ControllerContext context)
        {
            // this line fixed the problem with returing null
            context.RequestContext.HttpContext.Response.SuppressFormsAuthenticationRedirect = true;

            var properties = new AuthenticationProperties() { RedirectUri = RedirectUri };
            if (UserId != null)
            {
                properties.Dictionary[XsrfKey] = UserId;
            }
            context.HttpContext.GetOwinContext().Authentication.Challenge(properties, LoginProvider);
        }
    }

它固定我的问题与返回的 NULL 。

注意：与Twitter的授权登录时不要使用小提琴手。您将收到错误。

Notice: don't use fiddler when logging with twitter authorization. You will receive error.

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