Ticket #35580: 35580.1.diff

src/wp-includes/rest-api/class-wp-rest-server.php

@@ -236 +236 @@
                 $this->send_header( 'Access-Control-Expose-Headers', 'X-WP-Total, X-WP-TotalPages' );
                 $this->send_header( 'Access-Control-Allow-Headers', 'Authorization' );
 
+                $api_root = get_rest_url();
+                if ( ! empty( $api_root ) ) {
+                        $this->send_header( 'Link', '<' . esc_url_raw( $api_root ) . '>; rel="https://api.w.org/"' );
+                }
+
                 /**
                  * Send nocache headers on authenticated requests.
                  *