# HG changeset patch
# User Ruslan Ermilov <ru@nginx.com>
# Date 1464020244 -10800
# Node ID 3af0e65a461acce7cf9a31ac15803926ebf39408
# Parent  19db5a6bc34e3848d0b9d2a5f42c83f48d06a30e
Realip: detect duplicate real_ip_header directive.

diff --git a/src/http/modules/ngx_http_realip_module.c b/src/http/modules/ngx_http_realip_module.c
--- a/src/http/modules/ngx_http_realip_module.c
+++ b/src/http/modules/ngx_http_realip_module.c
@@ -387,6 +387,10 @@ ngx_http_realip(ngx_conf_t *cf, ngx_comm
 
     ngx_str_t  *value;
 
+    if (rlcf->type != NGX_CONF_UNSET_UINT) {
+        return "is duplicate";
+    }
+
     value = cf->args->elts;
 
     if (ngx_strcmp(value[1].data, "X-Real-IP") == 0) {