예제 #1
0
 /**
  * Check if an already cached request must be revalidated, and if so update
  * the request with the correct ETag headers.
  * @param Google_Http_Request $cached A previously cached response.
  * @param Google_Http_Request $request The outbound request.
  * return bool If the cached object needs to be revalidated, false if it is
  * still current and can be re-used.
  */
 protected function checkMustRevalidateCachedRequest($cached, $request)
 {
     if (Google_Http_CacheParser::mustRevalidate($cached)) {
         $addHeaders = array();
         if ($cached->getResponseHeader('etag')) {
             // [13.3.4] If an entity tag has been provided by the origin server,
             // we must use that entity tag in any cache-conditional request.
             $addHeaders['If-None-Match'] = $cached->getResponseHeader('etag');
         } elseif ($cached->getResponseHeader('date')) {
             $addHeaders['If-Modified-Since'] = $cached->getResponseHeader('date');
         }
         $request->setRequestHeaders($addHeaders);
         return true;
     } else {
         return false;
     }
 }
예제 #2
0
 public function testMustRevalidate()
 {
     $now = time();
     $client = $this->getClient();
     // Expires 1 year in the future, and contains the must-revalidate directive.
     // Don't revalidate. must-revalidate only applies to expired entries.
     $future = $now + 365 * 24 * 60 * 60;
     $resp = new Google_Http_Request('http://localhost', 'GET');
     $resp->setResponseHttpCode('200');
     $resp->setResponseHeaders(array('Cache-Control' => 'max-age=3600, must-revalidate', 'Expires' => gmdate('D, d M Y H:i:s', $future) . ' GMT', 'Date' => gmdate('D, d M Y H:i:s', $now) . ' GMT'));
     $this->assertFalse(Google_Http_CacheParser::mustRevalidate($resp));
     // Contains the max-age=3600 directive, but was created 2 hours ago.
     // Must revalidate.
     $past = $now - 2 * 60 * 60;
     $resp = new Google_Http_Request('http://localhost', 'GET');
     $resp->setResponseHttpCode('200');
     $resp->setResponseHeaders(array('Cache-Control' => 'max-age=3600', 'Expires' => gmdate('D, d M Y H:i:s', $future) . ' GMT', 'Date' => gmdate('D, d M Y H:i:s', $past) . ' GMT'));
     $this->assertTrue(Google_Http_CacheParser::mustRevalidate($resp));
     // Contains the max-age=3600 directive, and was created 600 seconds ago.
     // No need to revalidate, regardless of the expires header.
     $past = $now - 600;
     $resp = new Google_Http_Request('http://localhost', 'GET');
     $resp->setResponseHttpCode('200');
     $resp->setResponseHeaders(array('Cache-Control' => 'max-age=3600', 'Expires' => gmdate('D, d M Y H:i:s', $past) . ' GMT', 'Date' => gmdate('D, d M Y H:i:s', $past) . ' GMT'));
     $this->assertFalse(Google_Http_CacheParser::mustRevalidate($resp));
 }