Jose\Object\DownloadedJWKSet::downloadContent PHP Method

    private function downloadContent()
    {
        $params = [CURLOPT_RETURNTRANSFER => true, CURLOPT_URL => $this->url];
        if (false === $this->allow_unsecured_connection) {
            $params[CURLOPT_SSL_VERIFYPEER] = true;
            $params[CURLOPT_SSL_VERIFYHOST] = 2;
        }
        $ch = curl_init();
        curl_setopt_array($ch, $params);
        $content = curl_exec($ch);
        curl_close($ch);
        Assertion::false(false === $content, 'Unable to get content.');
        return $content;
    }