commit 46ac5c760c0d460cbbd8e23a1154326569559e3d
author Maxim Dounin <mdounin@mdounin.ru> Thu Jun 26 02:35:01 2014 +0400
committer Maxim Dounin <mdounin@mdounin.ru> Thu Jun 26 02:35:01 2014 +0400
tree 1b56af75bdd9b047c64aa9ef027e69b5b05a2355
parent b8129616776a6973b314f71901420ad6d38aa579

Upstream: cache revalidation using If-None-Match.

src/http/modules/ngx_http_proxy_module.c

diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
index 61af3df..52c63e1 100644
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -677,7 +677,7 @@
     { ngx_string("If-Modified-Since"),
       ngx_string("$upstream_cache_last_modified") },
     { ngx_string("If-Unmodified-Since"), ngx_string("") },
-    { ngx_string("If-None-Match"), ngx_string("") },
+    { ngx_string("If-None-Match"), ngx_string("$upstream_cache_etag") },
     { ngx_string("If-Match"), ngx_string("") },
     { ngx_string("Range"), ngx_string("") },
     { ngx_string("If-Range"), ngx_string("") },