From 57260d6193b58ef4896144f7381b5f715eff0b4a Mon Sep 17 00:00:00 2001
From: wiaamm <wiaamm@checkpoint.com>
Date: Sun, 14 Dec 2025 11:23:36 +0200
Subject: [PATCH] add missing content-length update

---
 .../kong/plugins/open-appsec-waf-kong-plugin/handler.lua       | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/attachments/kong/plugins/open-appsec-waf-kong-plugin/handler.lua b/attachments/kong/plugins/open-appsec-waf-kong-plugin/handler.lua
index cd06a06..2548165 100755
--- a/attachments/kong/plugins/open-appsec-waf-kong-plugin/handler.lua
+++ b/attachments/kong/plugins/open-appsec-waf-kong-plugin/handler.lua
@@ -300,6 +300,9 @@ function NanoHandler.body_filter(conf)
                 return
             else
                 local buffered_data = table.concat(ctx.response_buffer)
+                local original_content_length = tonumber(ngx.header["Content-Length"]) or #buffered_data
+                local total_diff = ctx.content_length_diff or 0
+                ngx.header["Content-Length"] = original_content_length + total_diff
                 ngx.arg[1] = buffered_data
                 ctx.response_buffer = nil
                 return