Core/PacketIO: Prevented excessive WhoOpcode spam - solves possible crash/lag method

src/server/game/Server/Protocol/Handlers/MiscHandler.cpp

@@ -169,6 +169,11 @@ void WorldSession::HandleWhoOpcode(WorldPacket & recv_data)
 {
     sLog->outDebug(LOG_FILTER_NETWORKIO, "WORLD: Recvd CMSG_WHO Message");
 
+    time_t now = time(NULL);
+    if (now - timeLastWhoCommand < 5)
+        return;
+    else timeLastWhoCommand = now;
+
     uint32 matchcount = 0;
 
     uint32 level_min, level_max, racemask, classmask, zones_count, str_count;

src/server/game/Server/WorldSession.cpp

@@ -94,7 +94,7 @@ m_playerRecentlyLogout(false), m_playerSave(false),
 m_sessionDbcLocale(sWorld->GetAvailableDbcLocale(locale)),
 m_sessionDbLocaleIndex(locale),
 m_latency(0), m_TutorialsChanged(false), recruiterId(recruiter),
-isRecruiter(isARecruiter)
+isRecruiter(isARecruiter), timeLastWhoCommand(0)
 {
     if (sock)
     {

src/server/game/Server/WorldSession.h

@@ -949,6 +949,7 @@ class WorldSession
         uint32 recruiterId;
         bool isRecruiter;
         ACE_Based::LockedQueue<WorldPacket*, ACE_Thread_Mutex> _recvQueue;
+        time_t timeLastWhoCommand;
 };
 #endif
 /// @}