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

Author: Daniel-Constantin Mierla <mico...@gmail.com>
Committer: Daniel-Constantin Mierla <mico...@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;


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