function ContentLength::handle

File

core/lib/Drupal/Core/StackMiddleware/ContentLength.php, line 27

Class

ContentLength

Adds a Content-Length HTTP header to responses.

Namespace

Code

public function handle(Request $request, $type = self::MAIN_REQUEST, $catch = TRUE) : Response {
  $response = $this->httpKernel
    ->handle($request, $type, $catch);
  if ($response->isInformational() || $response->isEmpty()) {
    return $response;
  }
  if ($response->headers
    ->has('Transfer-Encoding')) {
    return $response;
  }
  // Drupal cannot set the correct content length header when there is a
  // server error.
  if ($response->isServerError()) {
    return $response;
  }
  $content = $response->getContent();
  if ($content === FALSE) {
    return $response;
  }
  $response->headers
    ->set('Content-Length', strlen($content), TRUE);
  return $response;
}