Author: ru
Date: 2012-12-26 14:46:06 +0000 (Wed, 26 Dec 2012)
New Revision: 4999
URL: http://trac.nginx.org/nginx/changeset/4999/nginx

Log:
Upstream keepalive: detect duplicate "keepalive" directive.

A failure to detect duplicate "keepalive" directive resulted in
stack exhaustion.


Modified:
trunk/src/http/modules/ngx_http_upstream_keepalive_module.c

Modified: trunk/src/http/modules/ngx_http_upstream_keepalive_module.c
===================================================================
--- trunk/src/http/modules/ngx_http_upstream_keepalive_module.c 2012-12-26 09:29:37 UTC (rev 4998)
+++ trunk/src/http/modules/ngx_http_upstream_keepalive_module.c 2012-12-26 14:46:06 UTC (rev 4999)
@@ -502,6 +502,10 @@
kcf = ngx_http_conf_upstream_srv_conf(uscf,
ngx_http_upstream_keepalive_module);

+ if (kcf->original_init_upstream) {
+ return "is duplicate";
+ }
+
kcf->original_init_upstream = uscf->peer.init_upstream
? uscf->peer.init_upstream
: ngx_http_upstream_init_round_robin;

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