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-rw-r--r--include/dns.h4
-rw-r--r--src/dns.cpp4
2 files changed, 8 insertions, 0 deletions
diff --git a/include/dns.h b/include/dns.h
index de4bcf422..05df6f69c 100644
--- a/include/dns.h
+++ b/include/dns.h
@@ -302,6 +302,10 @@ class CoreExport DNS : public EventHandler
*/
static const int MAX_REQUEST_ID = 0xFFFF;
+ /** Maximum number of entries in cache
+ */
+ static const unsigned int MAX_CACHE_SIZE = 1000;
+
/**
* Currently cached items
*/
diff --git a/src/dns.cpp b/src/dns.cpp
index ff823524c..3d3bc947f 100644
--- a/src/dns.cpp
+++ b/src/dns.cpp
@@ -1060,7 +1060,11 @@ void DNS::HandleEvent(EventType, int)
ServerInstance->stats->statsDnsGood++;
if (!this->GetCache(res.original.c_str()))
+ {
+ if (cache->size() >= MAX_CACHE_SIZE)
+ cache->clear();
this->cache->insert(std::make_pair(res.original.c_str(), CachedQuery(res.result, res.type, res.ttl)));
+ }
Classes[res.id]->OnLookupComplete(res.result, res.ttl, false);
delete Classes[res.id];