Ticket #47788: headers.patch

src/wp-admin/admin.php

@@ -35 +35 @@
 
 nocache_headers();
 
+// Fires once the requested HTTP headers for caching, content type, etc. have been sent.
+do_action_ref_array( 'send_headers', array( $wp ) );
+
 if ( get_option( 'db_upgraded' ) ) {
         flush_rewrite_rules();
         update_option( 'db_upgraded', false );

src/wp-login.php

@@ -493 +493 @@
 
 header( 'Content-Type: ' . get_bloginfo( 'html_type' ) . '; charset=' . get_bloginfo( 'charset' ) );
 
+// Fires once the requested HTTP headers for caching, content type, etc. have been sent.
+do_action_ref_array( 'send_headers', array( $wp ) );
+
 if ( defined( 'RELOCATE' ) && RELOCATE ) { // Move flag is set
         if ( isset( $_SERVER['PATH_INFO'] ) && ( $_SERVER['PATH_INFO'] !== $_SERVER['PHP_SELF'] ) ) {
                 $_SERVER['PHP_SELF'] = str_replace( $_SERVER['PATH_INFO'], '', $_SERVER['PHP_SELF'] );