Coordinating session timeout from Spring MVC (embedded Tomcat with Spring Boot) to AngularJS REST invocations

app.js

angular.module('App', [])
    .factory('sessionTimeoutInterceptor', function($log, $window) {
        return {
            response: function(response){
                if (response.headers('x-login') === 'true') {
                    $log.debug('Intercepted login redirect', response);
                    $window.location.reload();
                }
                return response;
            }
        }
    })

    .config(function($httpProvider){
        $httpProvider.interceptors.push('sessionTimeoutInterceptor');
    })
;

controller.java

@Controller
public class ViewController {

    @RequestMapping("/")
    String index() {
        return "index";
    }

    @RequestMapping("/login")
    ModelAndView loginPage(HttpServletRequest request, HttpServletResponse response, Model model) {
        response.addHeader("x-login", "true");

        CsrfToken csrf = (CsrfToken) request.getAttribute(CsrfToken.class
                .getName());

        final ModelAndView modelAndView = new ModelAndView()
                .addObject("csrf", csrf);
        modelAndView.setViewName("login");

        return modelAndView;
    }
}