Spring Boot: RedirectStrategy sendRedirect method always redirects to http. How do I make it stay on https?

I have a pretty simple handler method in my code:

@Service
public class AuthenticationSuccessHandler implements org.springframework.security.web.authentication.AuthenticationSuccessHandler {

    private RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();

   
    @Override

    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication a) throws IOException, ServletException {

        redirectStrategy.sendRedirect(request, response, PATH_CURRENT_USER);

    }

}


The problem is, if I browse to https://my.domain.com/, I end up at http://my.domain.com/ after the redirect. In actuality my load-balancer redirects all http requests to https, but this just causes multiple browser errors and incorrect behavior: "Mixed Content: The page at was loaded over HTTPS, but requested an insecure XMLHttpRequest endpoint".

So the question is: how does one get spring to redirect to https when that's what the original request used?

What worked for me is adding this to application.properties server.tomcat.use-relative-redirects=true

Without the server.tomcat.use-relative-redirects it will add a Location header like: http://my.domain.com/. With the server.tomcat.use-relative-redirects it will look like: /. So it will be relative to the current page from browser perspective.