修改CookieAuthenticationOptions登录路径OnRedirectToReturnUrl事件

我在MVC 6 ASP.NET 5项目中有以下设置：

配置方法中的Startup.cs：

app.UseCookieAuthentication(options =>
{
    options.AuthenticationScheme = "Cookie";
    options.LoginPath = new PathString("/<TENANT>/account/signin/");
    options.AccessDeniedPath = new PathString("/<TENANT>/account/unauthorised/");
    options.AutomaticAuthenticate = true;
    options.AutomaticChallenge = true;
    options.Events = new CookieAuthenticationEvents
    {
        OnRedirectToReturnUrl = MyClass.RedirectToReturnUrlAsync
    };
});

事件类别：

public static class MyClass
{
    public static async Task RedirectToReturnUrlAsync(CookieRedirectContext context)
    {
        context.Options.LoginPath = new PathString("/<HERE I PLAN TO PUT LOGIC TO FIGURE OUT TENANT FROM CONTEXT>/account/signin");
    }
}

假设用户转到以下网址：

http://localhost/mycompany/securecontroller/secureaction

我希望Cookie中间件将用户重定向到：

http://localhost/mycompany/account/signin

问题是，当重定向到返回Url时，代码"MyClass.RRedirectToReturnUrlAsync"永远不会被命中，所以我找不到在运行时修改LoginPath的机会。

我怀疑我的设置有问题。有人遇到过这个问题吗？

Hooroo

app.UseCookieAuthentication(options =>
{
    options.AuthenticationScheme = "Cookie";
    options.LoginPath = new PathString("/<TENANT>/account/signin/");
    options.AccessDeniedPath = new PathString("/<TENANT>/account/unauthorised/");
    options.AutomaticAuthenticate = true;
    options.AutomaticChallenge = true;
    options.Events = new MyCookieAuthenticationEvents();
});

public class MyCookieAuthenticationEvents : CookieAuthenticationEvents
{
    public override Task RedirectToLogin(CookieRedirectContext context)
    {
        context.RedirectUri = <PUT LOGIC HERE TO REPLACE YOUR REDIRECT URI>
        return base.RedirectToLogin(context);
    }
}