FinishResponseSubscriber::RESPONSE_HEADER_LINE_MAX_LENGTH

The character length limit for Drupal cache headers.

This is used for the 'X-Drupal-Cache-Tags' and 'X-Drupal-Cache-Contexts' headers. Apache has a hardcoded limit of 8190 bytes for response header line length, so this value is set slightly below that.

File

core/lib/Drupal/Core/EventSubscriber/FinishResponseSubscriber.php, line 32

Class

FinishResponseSubscriber

Response subscriber to handle finished responses.

Namespace

Code

protected const RESPONSE_HEADER_LINE_MAX_LENGTH = 8000;