Only send one GetAddr response per connection.

2016-04-11 01:09:34 +00:00
parent ea8bac6c36
commit e577b5c7e1
3 changed files with 10 additions and 0 deletions
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5932,6 +5932,14 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
            return true;
        }

+        // Only send one GetAddr response per connection to reduce resource waste
+        //  and discourage addr stamping of INV announcements.
+        if (pfrom->fSentAddr) {
+            LogPrint("net", "Ignoring repeated \"getaddr\". peer=%d\n", pfrom->id);
+            return true;
+        }
+        pfrom->fSentAddr = true;
+
        pfrom->vAddrToSend.clear();
        vector<CAddress> vAddr = addrman.GetAddr();
        BOOST_FOREACH(const CAddress &addr, vAddr)