[sr-dev] git:master:9a56b88c: core: safety check for retrying dns cache find

[Daniel-Constantin Mierla]

Module: kamailio
Branch: master
Commit: 9a56b88c1438e2d4f0c5b57c71bbe4e904b1a8e4
URL: https://github.com/kamailio/kamailio/commit/9a56b88c1438e2d4f0c5b57c71bbe4e904b1a8e4

Author: Daniel-Constantin Mierla <miconda at gmail.com>
Committer: Daniel-Constantin Mierla <miconda at gmail.com>
Date: 2017-03-27T21:00:08+02:00

core: safety check for retrying dns cache find

---

Modified: src/core/dns_cache.c

---

Diff:  https://github.com/kamailio/kamailio/commit/9a56b88c1438e2d4f0c5b57c71bbe4e904b1a8e4.diff
Patch: https://github.com/kamailio/kamailio/commit/9a56b88c1438e2d4f0c5b57c71bbe4e904b1a8e4.patch

---

diff --git a/src/core/dns_cache.c b/src/core/dns_cache.c
index 4273d2f..39bed3d 100644
--- a/src/core/dns_cache.c
+++ b/src/core/dns_cache.c
@@ -597,8 +597,10 @@ inline static struct dns_hash_entry* _dns_hash_find(str* name, int type,
 			cname_chain++;
 			cname.s=((struct cname_rdata*)e->rr_lst->rdata)->name;
 			cname.len= ((struct cname_rdata*)e->rr_lst->rdata)->name_len;
-			name=&cname;
-			goto again;
+			if(cname.s!=NULL && cname.len>0) {
+				name=&cname;
+				goto again;
+			}
 		}
 	}
 	return ret;