Explicitly return only the incoming AgentUpdate packet as this is the only one we pool atm, rather than attempting to return all incoming packets.

OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs

@@ -5424,16 +5424,19 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
         #region Scene/Avatar
 
-        private bool HandleAgentUpdate(IClientAPI sener, Packet Pack)
+        private bool HandleAgentUpdate(IClientAPI sener, Packet packet)
         {
             if (OnAgentUpdate != null)
             {
                 bool update = false;
-                AgentUpdatePacket agenUpdate = (AgentUpdatePacket)Pack;
+                AgentUpdatePacket agenUpdate = (AgentUpdatePacket)packet;
 
                 #region Packet Session and User Check
                 if (agenUpdate.AgentData.SessionID != SessionId || agenUpdate.AgentData.AgentID != AgentId)
+                {
+                    PacketPool.Instance.ReturnPacket(packet);
                     return false;
+                }
                 #endregion
 
                 AgentUpdatePacket.AgentDataBlock x = agenUpdate.AgentData;
@@ -5498,6 +5501,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 }
             }
 
+            PacketPool.Instance.ReturnPacket(packet);
+
             return true;
         }
 
@@ -11849,8 +11854,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
             if (!ProcessPacketMethod(packet))
                 m_log.Warn("[CLIENT]: unhandled packet " + packet.Type);
-
-            PacketPool.Instance.ReturnPacket(packet);
         }
 
         private static PrimitiveBaseShape GetShapeFromAddPacket(ObjectAddPacket addPacket)

OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs

@@ -314,7 +314,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
             base.StartOutbound();
 
-            // This thread will process the packets received that are placed on the packetInbox
             Watchdog.StartThread(
                 OutgoingPacketHandler,
                 string.Format("Outgoing Packets ({0})", m_scene.RegionInfo.RegionName),
@@ -930,6 +929,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             // Handle appended ACKs
             if (packet.Header.AppendedAcks && packet.Header.AckList != null)
             {
+//                m_log.DebugFormat(
+//                    "[LLUDPSERVER]: Handling {0} appended acks from {1} in {2}",
+//                    packet.Header.AckList.Length, client.Name, m_scene.Name);
+
                 for (int i = 0; i < packet.Header.AckList.Length; i++)
                     udpClient.NeedAcks.Acknowledge(packet.Header.AckList[i], now, packet.Header.Resent);
             }
@@ -939,6 +942,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             {
                 PacketAckPacket ackPacket = (PacketAckPacket)packet;
 
+//                m_log.DebugFormat(
+//                    "[LLUDPSERVER]: Handling {0} packet acks for {1} in {2}",
+//                    ackPacket.Packets.Length, client.Name, m_scene.Name);
+
                 for (int i = 0; i < ackPacket.Packets.Length; i++)
                     udpClient.NeedAcks.Acknowledge(ackPacket.Packets[i].ID, now, packet.Header.Resent);
 
@@ -952,6 +959,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
             if (packet.Header.Reliable)
             {
+//                m_log.DebugFormat(
+//                    "[LLUDPSERVER]: Adding ack request for {0} {1} from {2} in {3}",
+//                    packet.Type, packet.Header.Sequence, client.Name, m_scene.Name);
+
                 udpClient.PendingAcks.Enqueue(packet.Header.Sequence);
 
                 // This is a somewhat odd sequence of steps to pull the client.BytesSinceLastACK value out,
@@ -998,6 +1009,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
             if (packet.Type == PacketType.StartPingCheck)
             {
+//                m_log.DebugFormat("[LLUDPSERVER]: Handling ping from {0} in {1}", client.Name, m_scene.Name);
+
                 // We don't need to do anything else with ping checks
                 StartPingCheckPacket startPing = (StartPingCheckPacket)packet;
                 CompletePing(udpClient, startPing.PingID.PingID);
@@ -1286,7 +1299,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             // on to en-US to avoid number parsing issues
             Culture.SetCurrentCulture();
 
-            while (base.IsRunningInbound)
+            while (IsRunningInbound)
             {
                 try
                 {

OpenSim/Region/ClientStack/Linden/UDP/PacketPool.cs

@@ -108,15 +108,19 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             {
                 if (!pool.ContainsKey(type) || pool[type] == null || (pool[type]).Count == 0)
                 {
+//                    m_log.DebugFormat("[PACKETPOOL]: Building {0} packet", type);
+
                     // Creating a new packet if we cannot reuse an old package
                     packet = Packet.BuildPacket(type);
                 }
                 else
                 {
+//                    m_log.DebugFormat("[PACKETPOOL]: Pulling {0} packet", type);
+
                     // Recycle old packages
                     m_packetsReusedStat.Antecedent++;
 
-                    packet = (pool[type]).Pop();
+                    packet = pool[type].Pop();
                 }
             }
 
@@ -227,7 +231,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                             if ((pool[type]).Count < 50)
                             {
-                                (pool[type]).Push(packet);
+//                                m_log.DebugFormat("[PACKETPOOL]: Pushing {0} packet", type);
+
+                                pool[type].Push(packet);
                             }
                         }
                         break;