From 73eb97f5005778092293588f3b2d5524e0c0a1da Mon Sep 17 00:00:00 2001
From: Igor Sysoev <igor@sysoev.ru>
Date: Thu, 6 Mar 2008 08:48:25 +0000
Subject: check duplicate resolver

---
 src/mail/ngx_mail_core_module.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mail/ngx_mail_core_module.c b/src/mail/ngx_mail_core_module.c
index 15627d245..03635fc43 100644
--- a/src/mail/ngx_mail_core_module.c
+++ b/src/mail/ngx_mail_core_module.c
@@ -422,6 +422,10 @@ ngx_mail_core_resolver(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
 
     value = cf->args->elts;
 
+    if (cscf->resolver != NGX_CONF_UNSET_PTR) {
+        return "is duplicate";
+    }
+
     if (ngx_strcmp(value[1].data, "off") == 0) {
         cscf->resolver = NULL;
         return NGX_CONF_OK;
-- 
cgit