protected FinishResponseSubscriber::setExpiresNoCache(Response $response)
Disable caching in ancient browsers and for HTTP/1.0 proxies and clients.
HTTP/1.0 proxies do not support the Vary header, so prevent any caching by sending an Expires date in the past. HTTP/1.1 clients ignore the Expires header if a Cache-Control: max-age= directive is specified (see RFC 2616, section 14.9.3).
Parameters
\Symfony\Component\HttpFoundation\Response $response: A response object.
File
- core/lib/Drupal/Core/EventSubscriber/FinishResponseSubscriber.php, line 275
Class
- FinishResponseSubscriber
- Response subscriber to handle finished responses.
Namespace
Drupal\Core\EventSubscriber
Code
protected function setExpiresNoCache(Response $response) { $response->setExpires(\DateTime::createFromFormat('j-M-Y H:i:s T', '19-Nov-1978 05:00:00 UTC')); }
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