I found next solution:
void main()
{
auto settings = new HTTPServerSettings;
settings.port = 8080;
settings.errorPageHandler = toDelegate(&errorPage);
auto router = new URLRouter();
router.get("*", &index);
listenHTTP(settings, router);
registerRestInterface(router, new SO());
auto routes = router.getAllRoutes();
runEventLoop();
}
void index(HTTPServerRequest req, HTTPServerResponse res)
{
serveStaticFiles("./public/")(req,res);
}