purge: Prevent caching of purge response

Krinkle · Krinkle · commit 665755539294 · 2021-08-16T03:16:38.000+01:00
Especially since our stricter CDN ignores query parameters, and thus makes it impossible to purge two different URLs since the second hit will serve the response to the previous purge request. Ref https://github.com/jquery/infrastructure/issues/474.
diff --git a/purge.php b/purge.php
@@ -77,6 +77,7 @@ function jq_request_post_json( $url, array $headers, array $postData ) {
 }
 
 header( 'Content-Type: text/plain' );
+header( 'Cache-Control: private, no-cache, must-revalidate' );
 header( 'X-Content-Type-Options: nosniff' );
 echo "Attempting to purge:\n{$file}\n\n";
 

Original file line number	Diff line number	Diff line change
`@@ -77,6 +77,7 @@ function jq_request_post_json( $url, array $headers, array $postData ) {`
`77`	`77`	`}`
`78`	`78`
`79`	`79`	`header( 'Content-Type: text/plain' );`
	`80`	`+header( 'Cache-Control: private, no-cache, must-revalidate' );`
`80`	`81`	`header( 'X-Content-Type-Options: nosniff' );`
`81`	`82`	`echo "Attempting to purge:\n{$file}\n\n";`
`82`	`83`