PicoFeed\Client\Curl::prepareDownloadMode PHP Метод

    private function prepareDownloadMode($ch)
    {
        $this->body = '';
        $this->response_headers = array();
        $this->response_headers_count = 0;
        $write_function = 'readBody';
        $header_function = 'readHeaders';
        if ($this->isPassthroughEnabled()) {
            $write_function = 'passthroughBody';
        }
        curl_setopt($ch, CURLOPT_WRITEFUNCTION, array($this, $write_function));
        curl_setopt($ch, CURLOPT_HEADERFUNCTION, array($this, $header_function));
        return $ch;
    }