From 61eda1f441092eb12936472de2dc73898e40aa16 Mon Sep 17 00:00:00 2001
From: Justin Clark-Casey (justincc)
Date: Fri, 19 Jul 2013 00:51:13 +0100
Subject: Make the check as to whether any particular inbound AgentUpdate
 packet is significant much earlier in UDP processing (i.e. before we
 pointlessly place such packets on internal queues, etc.)

Appears to have some impact on cpu but needs testing.
---
 OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

(limited to 'OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs')

diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
index 78d4165..766c2fe 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
@@ -1307,8 +1307,21 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             LogPacketHeader(true, udpClient.CircuitCode, 0, packet.Type, (ushort)packet.Length);
             #endregion BinaryStats
 
-            if (m_discardAgentUpdates && packet.Type == PacketType.AgentUpdate)
-                return;
+            if (packet.Type == PacketType.AgentUpdate)
+            {
+                if (m_discardAgentUpdates)
+                    return;
+
+                AgentUpdatePacket agentUpdate = (AgentUpdatePacket)packet;
+
+                if (agentUpdate.AgentData.SessionID != client.SessionId 
+                    || agentUpdate.AgentData.AgentID != client.AgentId
+                    || !((LLClientView)client).CheckAgentUpdateSignificance(agentUpdate.AgentData))
+                {
+                    PacketPool.Instance.ReturnPacket(packet);
+                    return;
+                }
+            }
 
             #region Ping Check Handling
 
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