Currently I am implemented the SSRS 2016 Custom Authentication via https://github.com/Microsoft/Reporting-Services/tree/master/CustomSecuritySample2016
I have an external web application with only a test login page. Once the user is logged on and authenticated I am using HttpContext.Current.Response.Redirect(ssrslogin.aspx,true) for the redirect. I get redirected to the custom login page within SSRS 2016 but not getting authorized.
The user shouldn't see the custom login page, the cookie being passed from the external web application should get passed along to the SSRS custom auth login page. Which in turns validates the cookie using the AuthorizzationExtension.
What am I missing?