2 files changed, 62 insertions, 20 deletions

diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
index 960e0a2..7e85396 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
@@ -348,6 +348,23 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         protected PriorityQueue<double, ImprovedTerseObjectUpdatePacket.ObjectDataBlock> m_avatarTerseUpdates;
         private PriorityQueue<double, ImprovedTerseObjectUpdatePacket.ObjectDataBlock> m_primTerseUpdates;
         private PriorityQueue<double, ObjectUpdatePacket.ObjectDataBlock> m_primFullUpdates;
+
+        /// <value>
+        /// List used in construction of data blocks for an object update packet.  This is to stop us having to
+        /// continually recreate it.
+        /// </value>
+        protected List<ObjectUpdatePacket.ObjectDataBlock> m_fullUpdateDataBlocksBuilder;
+
+        /// <value>
+        /// Maintain a record of all the objects killed.  This allows us to stop an update being sent from the
+        /// thread servicing the m_primFullUpdates queue after a kill.  If this happens the object persists as an
+        /// ownerless phantom.
+        ///
+        /// All manipulation of this set has to occur under a m_primFullUpdate.SyncRoot lock
+        ///       
+        /// </value>
+        protected HashSet<uint> m_killRecord;
+        
         private int m_moneyBalance;
         private int m_animationSequenceNumber = 1;
         private bool m_SendLogoutPacketWhenClosing = true;
@@ -437,6 +454,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             m_avatarTerseUpdates = new PriorityQueue<double, ImprovedTerseObjectUpdatePacket.ObjectDataBlock>();
             m_primTerseUpdates = new PriorityQueue<double, ImprovedTerseObjectUpdatePacket.ObjectDataBlock>();
             m_primFullUpdates = new PriorityQueue<double, ObjectUpdatePacket.ObjectDataBlock>(m_scene.Entities.Count);
+            m_fullUpdateDataBlocksBuilder = new List<ObjectUpdatePacket.ObjectDataBlock>();
+            m_killRecord = new HashSet<uint>();
 
             m_assetService = m_scene.RequestModuleInterface<IAssetService>();
             m_hyperAssets = m_scene.RequestModuleInterface<IHyperAssetService>();
@@ -1473,7 +1492,12 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             kill.ObjectData[0].ID = localID;
             kill.Header.Reliable = true;
             kill.Header.Zerocoded = true;
-            OutPacket(kill, ThrottleOutPacketType.State);
+
+            lock (m_primFullUpdates.SyncRoot)
+            {
+                m_killRecord.Add(localID);
+                OutPacket(kill, ThrottleOutPacketType.State);
+            }
         }
 
         /// <summary>
@@ -3513,21 +3537,34 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 if (count == 0)
                     return;
 
-                outPacket.ObjectData = new ObjectUpdatePacket.ObjectDataBlock[count];
+                m_fullUpdateDataBlocksBuilder.Clear();
+                                
                 for (int i = 0; i < count; i++)
                 {
-                    outPacket.ObjectData[i] = m_primFullUpdates.Dequeue();
+                    ObjectUpdatePacket.ObjectDataBlock block = m_primFullUpdates.Dequeue();
 
+                    if (!m_killRecord.Contains(block.ID))
+                    {
+                        m_fullUpdateDataBlocksBuilder.Add(block);
+                        
 //                    string text = Util.FieldToString(outPacket.ObjectData[i].Text);
 //                    if (text.IndexOf("\n") >= 0)
 //                        text = text.Remove(text.IndexOf("\n"));
 //                    m_log.DebugFormat(
 //                        "[CLIENT]: Sending full info about prim {0} text {1} to client {2}", 
 //                        outPacket.ObjectData[i].ID, text, Name);
+                    }
+//                    else
+//                    {
+//                        m_log.WarnFormat(
+//                            "[CLIENT]: Preventing full update for {0} after kill to {1}", block.ID, Name);                        
+//                    }
                 }
-            }
 
-            OutPacket(outPacket, ThrottleOutPacketType.State);
+                outPacket.ObjectData = m_fullUpdateDataBlocksBuilder.ToArray();
+                
+                OutPacket(outPacket, ThrottleOutPacketType.State);
+            }            
         }
 
         public void SendPrimTerseUpdate(SendPrimitiveTerseData data)
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs b/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
index 3c4fa72..5ed4cd7 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
@@ -513,6 +513,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             byte flags = buffer.Data[0];
             bool isResend = (flags & Helpers.MSG_RESENT) != 0;
             bool isReliable = (flags & Helpers.MSG_RELIABLE) != 0;
+            bool isZerocoded = (flags & Helpers.MSG_ZEROCODED) != 0;
             LLUDPClient udpClient = outgoingPacket.Client;
 
             if (!udpClient.IsConnected)
@@ -522,23 +523,27 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
             int dataLength = buffer.DataLength;
 
-            // Keep appending ACKs until there is no room left in the buffer or there are
-            // no more ACKs to append
-            uint ackCount = 0;
-            uint ack;
-            while (dataLength + 5 < buffer.Data.Length && udpClient.PendingAcks.Dequeue(out ack))
+            // NOTE: I'm seeing problems with some viewers when ACKs are appended to zerocoded packets so I've disabled that here
+            if (!isZerocoded)
             {
-                Utils.UIntToBytesBig(ack, buffer.Data, dataLength);
-                dataLength += 4;
-                ++ackCount;
-            }
+                // Keep appending ACKs until there is no room left in the buffer or there are
+                // no more ACKs to append
+                uint ackCount = 0;
+                uint ack;
+                while (dataLength + 5 < buffer.Data.Length && udpClient.PendingAcks.Dequeue(out ack))
+                {
+                    Utils.UIntToBytesBig(ack, buffer.Data, dataLength);
+                    dataLength += 4;
+                    ++ackCount;
+                }
 
-            if (ackCount > 0)
-            {
-                // Set the last byte of the packet equal to the number of appended ACKs
-                buffer.Data[dataLength++] = (byte)ackCount;
-                // Set the appended ACKs flag on this packet
-                buffer.Data[0] = (byte)(buffer.Data[0] | Helpers.MSG_APPENDED_ACKS);
+                if (ackCount > 0)
+                {
+                    // Set the last byte of the packet equal to the number of appended ACKs
+                    buffer.Data[dataLength++] = (byte)ackCount;
+                    // Set the appended ACKs flag on this packet
+                    buffer.Data[0] = (byte)(buffer.Data[0] | Helpers.MSG_APPENDED_ACKS);
+                }
             }
 
             buffer.DataLength = dataLength;