GetExternalLoginInfoAsync() loginInfo return null

问题:

I'm using Strava as my external login provider (I assume this is not related to Strava, could be google or facebook also) After running for a few hours / days or even weeks GetExternalLoginInfoAsync return null. I've read a bunch of other questions with the same problem, but did not find a solution. I post my entire ConfigureAuth method, just in case I did something wrong with the order.

If you have a strava account you could probably experience the problem here: fartslek.no/Account/Login

    public void ConfigureAuth(IAppBuilder app)
    {
        // Configure the db context, user manager and signin manager to use a single instance per request
        app.CreatePerOwinContext(ApplicationDbContext.Create);
        app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
        app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);

        // Enable the application to use a cookie to store information for the signed in user
        // and to use a cookie to temporarily store information about a user logging in with a third party login provider
        // Configure the sign in cookie
        app.UseCookieAuthentication(new CookieAuthenticationOptions
        {
            AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
            LoginPath = new PathString("/Account/Login"),
            Provider = new CookieAuthenticationProvider
            {
                // Enables the application to validate the security stamp when the user logs in.
                // This is a security feature which is used when you change a password or add an external login to your account.  
                OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser>(
                    validateInterval: TimeSpan.FromMinutes(30),
                    regenerateIdentity: (manager, user) => user.GenerateUserIdentityAsync(manager))
            },
            CookieManager = new SystemWebCookieManager()
        });            
        app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

        app.UseTwoFactorSignInCookie(DefaultAuthenticationTypes.TwoFactorCookie, TimeSpan.FromMinutes(5));

        app.UseTwoFactorRememberBrowserCookie(DefaultAuthenticationTypes.TwoFactorRememberBrowserCookie);


        app.UseStravaAuthentication( new StravaAuthenticationOptions{
              ClientId="XXX",
              ClientSecret= "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF",

        });
    }

I'm using this https://github.com/Johnny2Shoes/Owin.Security.Strava to get StravaAuth.

When it stop working a azure reset is not enough, but if I do a new deploy everything works for a while.

I'm using Owin 3.0.1 and Mvc 5.2.3

回答1:

I had the same problem. After googling a little, I've discovered this is a known bug in Owin, because of the way they handle cookies.

This issue was submitted to Katana Team, but it looks they won't fix it at all. There are many workarounds for this, but this was the simplest I could find:

    [HttpPost]
    [AllowAnonymous]
    [ValidateAntiForgeryToken]
    public ActionResult ExternalLogin(string provider, string returnUrl)
    {
        ControllerContext.HttpContext.Session.RemoveAll();

        // Request a redirect to the external login provider
        return new ChallengeResult(provider, Url.Action("ExternalLoginCallback", "Account", new { ReturnUrl = returnUrl }));
    }

See this question for more details about this bug, and let me know if this works well for you.