public void removeService(ServiceReference reference, Object service) {
        if (serviceRegistration != null) {
            serviceRegistration.unregister();
            serviceRegistration = null;
        }

        String alias = this.getAlias();
        ((HttpService) service).unregister(alias);
        if (servlet instanceof WebappServlet)
            ((WebappServlet)servlet).free();
        servlet = null;
    }
public void removeService ( ServiceReference reference , Object service ) { if ( serviceRegistration != null ) { serviceRegistration . unregister ( ) ; serviceRegistration = null ; } String alias = this . getAlias ( ) ; ( ( HttpService ) service ) . unregister ( alias ) ; if ( servlet instanceof WebappServlet ) ( ( WebappServlet ) servlet ) . free ( ) ; servlet = null ; }
Http Service is down, remove my servlet.