function Response::ensureIEOverSSLCompatibility

Checks if we need to remove Cache-Control for SSL encrypted downloads when using IE < 9.

@final

See also

http://support.microsoft.com/kb/323308

1 call to Response::ensureIEOverSSLCompatibility()

Response::prepare in vendor/symfony/http-foundation/Response.php

Prepares the Response before it is sent to the client.

File

vendor/symfony/http-foundation/Response.php, line 1307

Class

Response

Response represents an HTTP response.

Namespace

Symfony\Component\HttpFoundation

Code

protected function ensureIEOverSSLCompatibility(Request $request) : void {
    if (false !== stripos($this->headers
        ->get('Content-Disposition') ?? '', 'attachment') && 1 == preg_match('/MSIE (.*?);/i', $request->server
        ->get('HTTP_USER_AGENT') ?? '', $match) && true === $request->isSecure()) {
        if ((int) preg_replace('/(MSIE )(.*?);/', '$2', $match[0]) < 9) {
            $this->headers
                ->remove('Cache-Control');
        }
    }
}