Hprose\Client::getNextFilterHandler PHP Method

    protected function getNextFilterHandler(Closure $next, $handler)
    {
        if ($this->async) {
            return parent::getNextFilterHandler($next, $handler);
        }
        return function ($request, stdClass $context) use($next, $handler) {
            return call_user_func($handler, $request, $context, $next);
        };
    }