function varnish_preprocess_page in Varnish 6

Implements hook_preprocess_page().

File

./varnish.module, line 397

varnish.module Provide drupal hooks for integration with the Varnish control layer.

Code

function varnish_preprocess_page(&$variables) {
  global $conf;

  // Set some special headers if the cache is disabled so that varnish will not
  // cache the pages (for example when using captcha on them).
  if (isset($conf['cache']) && empty($conf['cache'])) {
    drupal_set_header('Pragma: no-cache');
    drupal_set_header('Cache-Control: s-maxage=0, max-age=0, no-store, no-cache, must-revalidate');
  }
}