public function enableSSL($strict = false)
    {
        $this->setScheme(self::SCHEME_SSL);
        if ($strict === false) {
            $this->setOption(CURLOPT_SSL_VERIFYPEER, 0);
            $this->setOption(CURLOPT_SSL_VERIFYHOST, 0);
        } else {
            $this->setOption(CURLOPT_SSL_VERIFYPEER, 0);
            $this->setOption(CURLOPT_SSL_VERIFYHOST, 1);
        }
    }