/**
* Sends an asset file to the client
*
* @param \Cake\Network\Request $request The request object to use.
* @param \Cake\Network\Response $response The response object to use.
* @param string $assetFile Path to the asset file in the file system
* @param string $ext The extension of the file to determine its mime type
* @return void
*/
protected function _deliverAsset(Request $request, Response $response, $assetFile, $ext)
{
$compressionEnabled = $response->compress();
if ($response->type($ext) === $ext) {
$contentType = 'application/octet-stream';
$agent = $request->env('HTTP_USER_AGENT');
if (preg_match('%Opera(/| )([0-9].[0-9]{1,2})%', $agent) || preg_match('/MSIE ([0-9].[0-9]{1,2})/', $agent)) {
$contentType = 'application/octetstream';
}
$response->type($contentType);
}
if (!$compressionEnabled) {
$response->header('Content-Length', filesize($assetFile));
}
$response->cache(filemtime($assetFile), $this->_cacheTime);
$response->sendHeaders();
readfile($assetFile);
if ($compressionEnabled) {
ob_end_flush();
}
}