public function parseResponse(displetretsidx_Google_HttpRequest $response)
 {
     $contentType = $response->getResponseHeader('content-type');
     $contentType = explode(';', $contentType);
     $boundary = false;
     foreach ($contentType as $part) {
         $part = explode('=', $part, 2);
         if (isset($part[0]) && 'boundary' == trim($part[0])) {
             $boundary = $part[1];
         }
     }
     $body = $response->getResponseBody();
     if ($body) {
         $body = str_replace("--{$boundary}--", "--{$boundary}", $body);
         $parts = explode("--{$boundary}", $body);
         $responses = array();
         foreach ($parts as $part) {
             $part = trim($part);
             if (!empty($part)) {
                 list($metaHeaders, $part) = explode("\r\n\r\n", $part, 2);
                 $metaHeaders = displetretsidx_Google_CurlIO::parseResponseHeaders($metaHeaders);
                 $status = substr($part, 0, strpos($part, "\n"));
                 $status = explode(" ", $status);
                 $status = $status[1];
                 list($partHeaders, $partBody) = displetretsidx_Google_CurlIO::parseHttpResponse($part, false);
                 $response = new displetretsidx_Google_HttpRequest("");
                 $response->setResponseHttpCode($status);
                 $response->setResponseHeaders($partHeaders);
                 $response->setResponseBody($partBody);
                 $response = displetretsidx_Google_REST::decodeHttpResponse($response);
                 // Need content id.
                 $responses[$metaHeaders['content-id']] = $response;
             }
         }
         return $responses;
     }
     return null;
 }
 /**
  * @static
  * @param displetretsidx_Google_HttpRequest $resp
  * @return bool True if the HTTP response is considered to be expired.
  * False if it is considered to be fresh.
  */
 public static function isExpired(displetretsidx_Google_HttpRequest $resp)
 {
     // HTTP/1.1 clients and caches MUST treat other invalid date formats,
     // especially including the value “0”, as in the past.
     $parsedExpires = false;
     $responseHeaders = $resp->getResponseHeaders();
     if (isset($responseHeaders['expires'])) {
         $rawExpires = $responseHeaders['expires'];
         // Check for a malformed expires header first.
         if (empty($rawExpires) || is_numeric($rawExpires) && $rawExpires <= 0) {
             return true;
         }
         // See if we can parse the expires header.
         $parsedExpires = strtotime($rawExpires);
         if (false == $parsedExpires || $parsedExpires <= 0) {
             return true;
         }
     }
     // Calculate the freshness of an http response.
     $freshnessLifetime = false;
     $cacheControl = $resp->getParsedCacheControl();
     if (isset($cacheControl['max-age'])) {
         $freshnessLifetime = $cacheControl['max-age'];
     }
     $rawDate = $resp->getResponseHeader('date');
     $parsedDate = strtotime($rawDate);
     if (empty($rawDate) || false == $parsedDate) {
         $parsedDate = time();
     }
     if (false == $freshnessLifetime && isset($responseHeaders['expires'])) {
         $freshnessLifetime = $parsedExpires - $parsedDate;
     }
     if (false == $freshnessLifetime) {
         return true;
     }
     // Calculate the age of an http response.
     $age = max(0, time() - $parsedDate);
     if (isset($responseHeaders['age'])) {
         $age = max($age, strtotime($responseHeaders['age']));
     }
     return $freshnessLifetime <= $age;
 }