prevent proxies from caching walls

Author: mobula9

src/StandAloneBounce.php

@@ -335,9 +335,15 @@ public function sendResponse(?string $body, int $statusCode = 200): void
                 break;
             case 401:
                 header('HTTP/1.0 401 Unauthorized');
+                header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
+                header('Cache-Control: post-check=0, pre-check=0', false);
+                header('Pragma: no-cache');
                 break;
             case 403:
                 header('HTTP/1.0 403 Forbidden');
+                header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
+                header('Cache-Control: post-check=0, pre-check=0', false);
+                header('Pragma: no-cache');
                 break;
             default:
                 throw new Exception("Unhandled code ${statusCode}");