Randomize order of processing messages from peers

src/net.cpp

@@ -1945,6 +1945,11 @@ void ThreadMessageHandler()
 
         bool fSleep = true;
 
+        // Randomize the order in which we process messages from/to our peers.
+        // This prevents attacks in which an attacker exploits having multiple
+        // consecutive connections in the vNodes list.
+        random_shuffle(vNodesCopy.begin(), vNodesCopy.end(), GetRandInt);
+
         BOOST_FOREACH(CNode* pnode, vNodesCopy)
         {
             if (pnode->fDisconnect)