Tomcat sends 403 at DELETE request although readonly is false

Question

I've got a Servlet that implements the doDelete method.

When I run the application on my tomcat (8.0.0 RC1) I get a 403 response. I checked the documentation regarding this (http://tomcat.apache.org/tomcat-8.0-doc/default-servlet.html) but no change.

My Servlet:

@WebServlet(urlPatterns = "/api/binding/*",
     initParams = {
                    @WebInitParam(name="readonly", value="false")
                 })
public class BindingServlet extends BasicServlet {

    private static final Logger LOGGER = Logger.getLogger(BindingServlet.class);

    @Override
    protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws    ServletException {
        String request = this.getRawRequest(req);

  // some code
    }
}

I followd the servlet implemenation through annotations from this page: http://blog.caucho.com/2009/10/06/servlet-30-tutorial-weblistener-webservlet-webfilter-and-webinitparam/