From c9c3f2f005c43fd885bd78f86e1044261e639bea Mon Sep 17 00:00:00 2001
From: Maxim Dounin <mdounin@mdounin.ru>
Date: Wed, 6 Oct 2021 18:01:42 +0300
Subject: [PATCH] Fixed $content_length cacheability with chunked (ticket
 #2252).

---
 src/http/ngx_http_variables.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/http/ngx_http_variables.c b/src/http/ngx_http_variables.c
index c25d80ccf..942dacd70 100644
--- a/src/http/ngx_http_variables.c
+++ b/src/http/ngx_http_variables.c
@@ -1179,6 +1179,10 @@ ngx_http_variable_content_length(ngx_http_request_t *r,
         v->no_cacheable = 0;
         v->not_found = 0;
 
+    } else if (r->headers_in.chunked) {
+        v->not_found = 1;
+        v->no_cacheable = 1;
+
     } else {
         v->not_found = 1;
     }