This method indicates that the response must not be served stale by a
cache in any circumstance without first revalidating with the origin.
When present, the TTL of the response should not be overridden to be
greater than the value provided by the origin.
| public mustRevalidate ( ) : boolean | ||
| return | boolean | true if the response must be revalidated by a cache, false otherwise |
public function track(Request $request)
{
$this->request = $request;
$referer = $this->request->query->get('utmr', '');
$path = $this->request->query->get('utmp', '');
$account = $this->request->query->get('utmac');
$userAgent = $this->request->server->get('HTTP_USER_AGENT', '');
$visitorId = $this->request->cookies->get($this->cookieName);
if (empty($visitorId)) {
$visitorId = $this->getVisitorId($this->getGuidHeader(), $account, $userAgent);
}
$url = $this->constructGifUrl($referer, $path, $account, $visitorId, $this->maskVisitorIp());
$this->browser->get($url, array('Accept-Language: ' . $this->request->server->get('HTTP_ACCEPT_LANGUAGE'), 'User-Agent: ' . $userAgent));
$cookie = new Cookie($this->cookieName, $visitorId, time() + $this->cookiePersistence, $this->cookiePath, $this->request->getHost());
$response = new Response();
$response->headers->add(array('Content-Type' => 'image/gif', 'Pragma' => 'no-cache'));
$response->setPrivate();
$response->mustRevalidate();
$response->setExpires(new \DateTime('-10 year'));
$response->setContent(join($this->gifData));
$response->headers->setCookie($cookie);
return $response;
}
public function testMustRevalidate()
{
$response = new Response();
$this->assertFalse($response->mustRevalidate());
}
public function testMustRevalidateWithProxyRevalidateCacheControlHeader()
{
$response = new Response();
$response->headers->set('cache-control', 'proxy-revalidate');
$this->assertTrue($response->mustRevalidate());
}
