[Libevent-users] 1.4 evdns: can have duplicate transaction ids

[Marko Kreen <markokr@xxxxxxxxx>]

It seems libevent 1.4 evdns can issue duplicate transaction ids,
if the double id is first one in the list.

See attached patch for quick fix.

-- 
marko

diff --git a/evdns.c b/evdns.c
index c85f6ea..e4213ff 100644
--- a/evdns.c
+++ b/evdns.c
@@ -1119,9 +1119,10 @@ transaction_id_pick(void) {
 				if (req->trans_id == trans_id) break;
 				req = req->next;
 			} while (req != started_at);
+			if (req->trans_id == trans_id) continue;
 		}
 		/* we didn't find it, so this is a good id */
-		if (req == started_at) return trans_id;
+		return trans_id;
 	}
 }