[nginx] Proxy: $proxy_internal_body_length fixed.

[Maxim Dounin]

details:   http://hg.nginx.org/nginx/rev/8c866e31bc39
branches:  stable-1.4
changeset: 5271:8c866e31bc39
user:      Maxim Dounin <mdounin at mdounin.ru>
date:      Sat May 11 21:12:24 2013 +0400
description:
Proxy: $proxy_internal_body_length fixed.

The $proxy_internal_body_length value might change during request lifetime,
notably if proxy_set_body used, and use of a cached value might result in
incorrect upstream requests.

Patch by Lanshun Zhou.

diffstat:

 src/http/modules/ngx_http_proxy_module.c |  3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diffs (13 lines):

diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -615,7 +615,8 @@ static ngx_http_variable_t  ngx_http_pro
 #endif
 
     { ngx_string("proxy_internal_body_length"), NULL,
-      ngx_http_proxy_internal_body_length_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
+      ngx_http_proxy_internal_body_length_variable, 0,
+      NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
 
     { ngx_null_string, NULL, NULL, 0, 0, 0 }
 };