OWIN SignOut不会删除cookie

我在外部身份验证服务器中使用OWIN中间件,我的应用程序使用OAuth授权代码授权流进行身份验证.

我可以重定向到身份验证服务器,针对外部提供商(Google)进行身份验证,并使用已登录的用户和应用程序Cookie设置重定向回我的客户端应用程序,但是当我尝试在我调用该AuthenticationManager.SignOut方法后注销cookie时.

我的cookie选项Startup.Auth.cs是:

var cookieOptions = new CookieAuthenticationOptions
                    {
                        Provider = cookieProvider,
                        AuthenticationType = "Application",
                        AuthenticationMode = AuthenticationMode.Passive,
                        LoginPath = new PathString("/Account/Index"),
                        LogoutPath = new PathString("/Account/Logout"),
                        SlidingExpiration = true,
                        ExpireTimeSpan = TimeSpan.FromMinutes(30),
                    };
app.UseCookieAuthentication(cookieOptions);
app.SetDefaultSignInAsAuthenticationType(DefaultAuthenticationTypes.ExternalCookie);
app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

我的登录方式:

var loginInfo = await AuthManager.GetExternalLoginInfoAsync();
SignInManager.ExternalSignInAsync(loginInfo, true);
var identity = AuthManager.AuthenticateAsync(DefaultAuthenticationTypes.ExternalCookie).Result.Identity;

if (identity != null)
{
    AuthManager.SignIn(
                  new AuthenticationProperties {IsPersistent = true},
                  new ClaimsIdentity(identity.Claims, "Application", identity.NameClaimType, identity.RoleClaimType));

        var ticket = AuthManager.AuthenticateAsync("Application").Result;
        var identity = ticket != null ? ticket.Identity : null;
        if (identity == null)
        {
            AuthManager.Challenge("Application");
            return new HttpUnauthorizedResult();
        }

        identity = new ClaimsIdentity(identity.Claims, "Bearer", identity.NameClaimType, identity.RoleClaimType);
        AuthManager.SignIn(identity);
}

return Redirect(Request.QueryString["ReturnUrl"]);

退出方法:

var authTypeNames = new List();
authTypeNames.Add("Google");
authTypeNames.Add("Application");
authTypeNames.Add("Bearer");
authTypeNames.Add(DefaultAuthenticationTypes.ExternalCookie);

Request.GetOwinContext().Authentication.SignOut(authTypeNames.ToArray());

我查看了其他问题,如: OWIN身份验证,过期当前令牌以及删除cookie 和 OWIN - Authentication.SignOut()不会删除cookie

没有运气.我知道我可以通过设置一个负的到期日来手动删除cookie,但如果可能的话,我更愿意使用内置方法.

如何在我退出时删除应用程序Cookie？