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Cron API: Prevent caching of WP Cron requests.

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Add `Cache-Control` and `Expires` HTTP headers to prevent caching of requests to WP Cron on systems supporting fastcgi_finish_request(). 

The fastcgi_finish_request() call prevents the setting of further HTTP headers by caching plugins subsequently loaded.

Props kingkero.
Fixes 47396.



git-svn-id: https://develop.svn.wordpress.org/trunk@45560 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Peter Wilson 2019-06-22 11:12:58 +00:00
parent e37aff4320
commit 183b4b6212
1 changed files with 2 additions and 0 deletions
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2
src/wp-cron.php
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@ -20,6 +20,8 @@ ignore_user_abort( true );
/* Don't make the request block till we finish, if possible. */ /* Don't make the request block till we finish, if possible. */
if ( function_exists( 'fastcgi_finish_request' ) && version_compare( phpversion(), '7.0.16', '>=' ) ) { if ( function_exists( 'fastcgi_finish_request' ) && version_compare( phpversion(), '7.0.16', '>=' ) ) {
header( 'Expires: Wed, 11 Jan 1984 05:00:00 GMT' );
header( 'Cache-Control: no-cache, must-revalidate, max-age=0' );
fastcgi_finish_request(); fastcgi_finish_request();
} }