将setHeader转换为使用https

Question

任何人都可以帮助转换这段代码，通过PHP中的HTTPS发送标题响应

protected function _sendUploadResponse($fileName, $content, $contentType='application/octet-stream')
{
    $response = $this->getResponse();
    $response->setHeader('HTTP/1.1 200 OK','');
    $response->setHeader('Pragma', 'public', true);
    $response->setHeader('Cache-Control', 'must-revalidate, post-check=0, pre-check=0', true);
    $response->setHeader('Content-Disposition', 'attachment; filename='.$fileName);
    $response->setHeader('Last-Modified', date('r'));
    $response->setHeader('Accept-Ranges', 'bytes');
    $response->setHeader('Content-Length', strlen($content));
    $response->setHeader('Content-type', $contentType);
    $response->setBody($content);
    $response->sendResponse();
    die;
}