From 177aa89b1323d99e410bde04940aa02315e149cb Mon Sep 17 00:00:00 2001
From: Ad Schellevis <ad@opnsense.org>
Date: Mon, 29 Apr 2024 15:29:38 +0200
Subject: [PATCH] mvc: ApiControllerBase->configdStream() - prevent zlib
 compression as this will add buffering as well, which will result in sluggish
 behavior for dashboard widgets when webui compression is enabled.
 (https://github.com/opnsense/core/issues/7244)

---
 .../mvc/app/controllers/OPNsense/Base/ApiControllerBase.php    | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php b/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php
index c303b7f63..c264306ec 100644
--- a/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php
+++ b/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php
@@ -178,6 +178,9 @@ class ApiControllerBase extends ControllerRoot
         ],
         $poll_timeout = 2
     ) {
+        /* Never allow output compression on streams */
+        ini_set('zlib.output_compression', 'Off');
+        ob_end_clean();
         $response = (new Backend())->configdpStream($action, $params, $poll_timeout);
         foreach ($headers as $header) {
             header($header);