public function setDefaultOptions()
    {
        $this->options = array(
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_HEADER         => false,
            CURLOPT_ENCODING       => 'gzip,deflate',
            CURLOPT_AUTOREFERER    => true,
            CURLOPT_CONNECTTIMEOUT => 15,
            CURLOPT_TIMEOUT        => 30,
        );
    }