TTL

mili-tan · Jun 6, 2024 · 9e9a88b · 9e9a88b
1 parent 477a050
commit 9e9a88b
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/DnsCache.cs b/DnsCache.cs
@@ -13,12 +13,14 @@ public static void Add(DnsMessage qMessage, DnsMessage aMessage)
             var question = qMessage.Questions;
             var answerRecords = aMessage.AnswerRecords ?? new List<DnsRecordBase>();
             var ttl = (answerRecords.FirstOrDefault() ?? new ARecord(DomainName.Root, 60, IPAddress.Any)).TimeToLive;
+            if (ttl < 50) return;
             Add(new CacheItem(question.First().ToString(), (answerRecords, aMessage.ReturnCode)), ttl);
         }
 
         public static void Add(List<DnsQuestion> question, List<DnsRecordBase> answerRecords, ReturnCode rCode)
         {
             var ttl = (answerRecords.FirstOrDefault() ?? new ARecord(DomainName.Root, 60, IPAddress.Any)).TimeToLive;
+            if (ttl < 50) return;
             Add(new CacheItem(question.First().ToString(), (answerRecords, rCode)), ttl);
         }