rs = new ReqState(request, getServletConfig(), getServerName(), null);
rs = new ReqState(request, getServletConfig(), getServerName());
    private ReqState getRequestState(HttpServletRequest request) {        ReqState rs;        try {            rs = new ReqState(request, getServletConfig(), getServerName(), null);        } catch (BadURLException bue) {            rs = null;        }        return rs;    }