4 files changed, 185 insertions, 75 deletions

diff --git a/OpenSim/Region/ClientStack/LindenUDP/J2KImage.cs b/OpenSim/Region/ClientStack/LindenUDP/J2KImage.cs
index 5ba5df1..6cffd70 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/J2KImage.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/J2KImage.cs
@@ -260,7 +260,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 return false;
             }
         }
-        public bool SendPackets(LLClientView client)
+        public bool SendPackets(LLClientView client, int maxpack)
         {
 
             if (!m_completedSendAtCurrentDiscardLevel)
@@ -284,7 +284,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     }
 
                     int count = 0;
-                    while (SendMore && count < 5 && m_packetNumber <= m_stopPacket)
+                    while (SendMore && count < maxpack && m_packetNumber <= m_stopPacket)
                     {
                         count++;
                         SendMore = SendPacket(client);
@@ -391,6 +391,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                             }
                         }
                     }
+                    else
+                    {
+                        m_packetNumber = m_stopPacket;
+                    }
                 }
             }
         }
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
index cda4d49..2884268 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
@@ -80,6 +80,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         private List<ObjectUpdatePacket.ObjectDataBlock> m_primFullUpdates =
                 new List<ObjectUpdatePacket.ObjectDataBlock>();
 
+        private Timer m_textureRequestTimer;
+
         private bool m_clientBlocked;
 
         private int m_probesWithNoIngressPackets;
@@ -140,6 +142,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         protected int m_primTerseUpdateRate = 10;
         protected int m_primFullUpdateRate = 14;
 
+        protected int m_textureRequestRate  = 100;
+        protected int m_textureSendLimit   = 10;
+        protected int m_textureDataLimit   = 5;
+
         protected int m_packetMTU = 1400;
 
         protected IAssetService m_assetService;
@@ -344,6 +350,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
         private readonly IGroupsModule m_GroupsModule;
 
+        private AgentUpdateArgs lastarg = null;
+
         //private TerrainUnacked handlerUnackedTerrain = null;
 
         //**
@@ -544,6 +552,15 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     m_primFullUpdateRate = clientConfig.GetInt("FullUpdateRate",
                                                                m_primFullUpdateRate);
 
+                    m_textureRequestRate = clientConfig.GetInt("TextureRequestRate",
+                                                               m_textureRequestRate);
+
+                    m_textureSendLimit = clientConfig.GetInt("TextureSendLimit",
+                                                               m_textureSendLimit);
+
+                    m_textureDataLimit = clientConfig.GetInt("TextureDataLimit",
+                                                               m_textureDataLimit);
+
                     m_packetMTU = clientConfig.GetInt("PacketMTU", 1400);
                 }
             }
@@ -577,6 +594,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             m_avatarTerseUpdateTimer.Stop();
             m_primTerseUpdateTimer.Stop();
             m_primFullUpdateTimer.Stop();
+            m_textureRequestTimer.Stop();
 
             // This is just to give the client a reasonable chance of
             // flushing out all it's packets.  There should probably
@@ -660,6 +678,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             m_avatarTerseUpdateTimer.Stop();
             m_primTerseUpdateTimer.Stop();
             m_primFullUpdateTimer.Stop();
+            m_textureRequestTimer.Stop();
         }
 
         public void Restart()
@@ -682,6 +701,11 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             m_primFullUpdateTimer = new Timer(m_primFullUpdateRate);
             m_primFullUpdateTimer.Elapsed += new ElapsedEventHandler(ProcessPrimFullUpdates);
             m_primFullUpdateTimer.AutoReset = false;
+
+            m_textureRequestTimer = new Timer(m_textureRequestRate);
+            m_textureRequestTimer.Elapsed += new ElapsedEventHandler(ProcessTextureRequests);
+            m_textureRequestTimer.AutoReset = false;
+
         }
 
         public void Terminate()
@@ -914,6 +938,11 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             m_primFullUpdateTimer = new Timer(m_primFullUpdateRate);
             m_primFullUpdateTimer.Elapsed += new ElapsedEventHandler(ProcessPrimFullUpdates);
             m_primFullUpdateTimer.AutoReset = false;
+
+            m_textureRequestTimer = new Timer(m_textureRequestRate);
+            m_textureRequestTimer.Elapsed += new ElapsedEventHandler(ProcessTextureRequests);
+            m_textureRequestTimer.AutoReset = false;
+
             m_scene.AddNewClient(this);
 
             RefreshGroupMembership();
@@ -985,6 +1014,26 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             }
         }
 
+        protected virtual void TextureRequestHandler()
+        {
+            m_log.DebugFormat("[TRH] Thread started");
+           while (m_imageManager != null)
+            {
+                try
+                {
+                   while (m_imageManager != null)
+                    {
+                    }
+                }
+               catch (Exception e)
+                {
+                    m_log.WarnFormat("[TRH] Exception in handler loop: {0}", e.Message);
+                    m_log.Debug(e);
+                }
+            }
+            m_log.DebugFormat("[TRH] Thread terminated");
+        }
+
         # endregion
 
         // Previously ClientView.API partial class
@@ -3032,6 +3081,21 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             }
         }
 
+        // Unlike the other timers, this one is only started after
+        // the first request is seen.
+
+        void ProcessTextureRequests(object sender, ElapsedEventArgs e)
+        {
+            if (m_imageManager != null)
+            {
+                if (m_imageManager.ProcessImageQueue(m_textureSendLimit, 
+                                                     m_textureDataLimit))
+                {
+                    m_textureRequestTimer.Start();
+                }
+            }
+        }
+
         void ProcessPrimFullUpdates(object sender, ElapsedEventArgs e)
         {
             lock (m_primFullUpdates)
@@ -3237,7 +3301,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             ushort numParts, UUID ImageUUID, uint ImageSize, byte[] ImageData, byte imageCodec)
         {
             ImageDataPacket im = new ImageDataPacket();
-            im.Header.Reliable = true;
+            im.Header.Reliable = false;
             im.ImageID.Packets = numParts;
             im.ImageID.ID = ImageUUID;
 
@@ -3253,7 +3317,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         public void SendImageNextPart(ushort partNumber, UUID imageUuid, byte[] imageData)
         {
             ImagePacketPacket im = new ImagePacketPacket();
-            im.Header.Reliable = true;
+            im.Header.Reliable = false;
             im.ImageID.Packet = partNumber;
             im.ImageID.ID = imageUuid;
             im.ImageData.Data = imageData;
@@ -4727,14 +4791,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// <param name="Pack">OpenMetaverse.packet</param>
         public void ProcessInPacket(Packet Pack)
         {
-            // check if we've got a local packet handler for this packet.type.   See RegisterLocalPacketHandlers()
+
             if (ProcessPacketMethod(Pack))
             {
-                //there is a handler registered that handled this packet type
-
-                // in the end, we dereference this, so we have to check if it's null
-                if (m_imageManager != null)
-                    m_imageManager.ProcessImageQueue(5);
                 return;
             }
 
@@ -5303,6 +5362,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 case PacketType.AgentUpdate:
                     if (OnAgentUpdate != null)
                     {
+                        bool update = false;
                         AgentUpdatePacket agenUpdate = (AgentUpdatePacket)Pack;
 
                         #region Packet Session and User Check
@@ -5315,26 +5375,58 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         #endregion
 
                         AgentUpdatePacket.AgentDataBlock x = agenUpdate.AgentData;
-                        AgentUpdateArgs arg = new AgentUpdateArgs();
-                        arg.AgentID = x.AgentID;
-                        arg.BodyRotation = x.BodyRotation;
-                        arg.CameraAtAxis = x.CameraAtAxis;
-                        arg.CameraCenter = x.CameraCenter;
-                        arg.CameraLeftAxis = x.CameraLeftAxis;
-                        arg.CameraUpAxis = x.CameraUpAxis;
-                        arg.ControlFlags = x.ControlFlags;
-                        arg.Far = x.Far;
-                        arg.Flags = x.Flags;
-                        arg.HeadRotation = x.HeadRotation;
-                        arg.SessionID = x.SessionID;
-                        arg.State = x.State;
 
-                        handlerAgentUpdate = OnAgentUpdate;
-                        if (handlerAgentUpdate != null)
-                            OnAgentUpdate(this, arg);
+                        // We can only check when we have something to check
+                        // against.
+
+                        if (lastarg != null)
+                        {
+                            update = 
+                               (
+                                (x.BodyRotation != lastarg.BodyRotation) ||
+                                (x.CameraAtAxis != lastarg.CameraAtAxis) ||
+                                (x.CameraCenter != lastarg.CameraCenter) ||
+                                (x.CameraLeftAxis != lastarg.CameraLeftAxis) ||
+                                (x.CameraUpAxis != lastarg.CameraUpAxis) ||
+                                (x.ControlFlags != lastarg.ControlFlags) ||
+                                (x.Far != lastarg.Far) ||
+                                (x.Flags != lastarg.Flags) ||
+                                (x.State != lastarg.State) ||
+                                (x.HeadRotation != lastarg.HeadRotation) ||
+                                (x.SessionID != lastarg.SessionID) ||
+                                (x.AgentID != lastarg.AgentID)
+                               );
+                        }
+                        else
+                            update = true;
+
+                        // These should be ordered from most-likely to
+                        // least likely to change. I've made an initial
+                        // guess at that.
+
+                        if (update)
+                        {
+                            AgentUpdateArgs arg = new AgentUpdateArgs();
+                            arg.AgentID = x.AgentID;
+                            arg.BodyRotation = x.BodyRotation;
+                            arg.CameraAtAxis = x.CameraAtAxis;
+                            arg.CameraCenter = x.CameraCenter;
+                            arg.CameraLeftAxis = x.CameraLeftAxis;
+                            arg.CameraUpAxis = x.CameraUpAxis;
+                            arg.ControlFlags = x.ControlFlags;
+                            arg.Far = x.Far;
+                            arg.Flags = x.Flags;
+                            arg.HeadRotation = x.HeadRotation;
+                            arg.SessionID = x.SessionID;
+                            arg.State = x.State;
+                            handlerAgentUpdate = OnAgentUpdate;
+                            lastarg = arg; // save this set of arguments for nexttime
+                            if (handlerAgentUpdate != null)
+                                OnAgentUpdate(this, arg);
+
+                            handlerAgentUpdate = null;
+                        }
 
-                        handlerAgentUpdate = null;
-                        //agenUpdate.AgentData.ControlFlags, agenUpdate.AgentData.BodyRotationa);
                     }
                     break;
 
@@ -6392,10 +6484,14 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                             // in the end, we null this, so we have to check if it's null
                             if (m_imageManager != null)
+                            {
                                 m_imageManager.EnqueueReq(args);
+                                m_textureRequestTimer.Start();
+                            }
                         }
                     }
                     break;
+
                 case PacketType.TransferRequest:
                     //m_log.Debug("ClientView.ProcessPackets.cs:ProcessInPacket() - Got transfer request");
 
@@ -9502,10 +9598,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     #endregion
             }
 
-            // in the end, we dereference this, so we have to check if it's null
-            if (m_imageManager != null)
-                m_imageManager.ProcessImageQueue(10);
             PacketPool.Instance.ReturnPacket(Pack);
+
         }
 
         private static PrimitiveBaseShape GetShapeFromAddPacket(ObjectAddPacket addPacket)
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLImageManager.cs b/OpenSim/Region/ClientStack/LindenUDP/LLImageManager.cs
index 587579d..295a5e6 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLImageManager.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLImageManager.cs
@@ -26,6 +26,7 @@
  */
 
 using System;
+using System.Threading;
 using System.Collections.Generic;
 using OpenMetaverse;
 using OpenMetaverse.Imaging;
@@ -96,46 +97,42 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                     J2KImage imgrequest = m_imagestore[newRequest.RequestedAssetID];
 
+                    // This is the inbound request sequence number. We can ignore
+                    // "old" ones.
+
                     if (newRequest.requestSequence > imgrequest.m_lastSequence)
                     {
+
                         imgrequest.m_lastSequence = newRequest.requestSequence;
 
-                        //First of all, is this being killed?
-                        //if (newRequest.Priority == 0.0f && newRequest.DiscardLevel == -1)
-                        //{
-                            //Do nothing (leaving the if for future use)
-                        //}
-                        //else
-                        //{
+                        //Check the priority
 
+                        double priority = imgrequest.m_requestedPriority;
+                        if (priority != newRequest.Priority)
+                        {
+                            //Remove the old priority
+                            m_priorities.Remove(imgrequest.m_designatedPriorityKey);
+                            //Assign a new unique priority
+                            imgrequest.m_requestedPriority = newRequest.Priority;
+                            imgrequest.m_designatedPriorityKey = AssignPriority(newRequest.RequestedAssetID, newRequest.Priority);
+                        }
 
-                            //Check the priority
-                            double priority = imgrequest.m_requestedPriority;
-                            if (priority != newRequest.Priority)
-                            {
-                                //Remove the old priority
-                                m_priorities.Remove(imgrequest.m_designatedPriorityKey);
-                                //Assign a new unique priority
-                                imgrequest.m_requestedPriority = newRequest.Priority;
-                                imgrequest.m_designatedPriorityKey = AssignPriority(newRequest.RequestedAssetID, newRequest.Priority);
-                            }
+                        //Update the requested discard level
+                        imgrequest.m_requestedDiscardLevel = newRequest.DiscardLevel;
 
-                            //Update the requested discard level
-                            imgrequest.m_requestedDiscardLevel = newRequest.DiscardLevel;
+                        //Update the requested packet number
+                        imgrequest.m_requestedPacketNumber = newRequest.PacketNumber;
 
-                            //Update the requested packet number
-                            imgrequest.m_requestedPacketNumber = newRequest.PacketNumber;
+                        //Check if this will create an outstanding texture request
+                        bool activated = imgrequest.m_completedSendAtCurrentDiscardLevel;
+                        //Run an update
 
-                             //Check if this will create an outstanding texture request
-                             bool activated = imgrequest.m_completedSendAtCurrentDiscardLevel;
-                             //Run an update
-                             imgrequest.RunUpdate();
-                             if (activated && !imgrequest.m_completedSendAtCurrentDiscardLevel && imgrequest.m_decoded)
-                             {
-                                 m_outstandingtextures++;
-                             }
+                        imgrequest.RunUpdate();
 
-                        //}
+                        if (activated && !imgrequest.m_completedSendAtCurrentDiscardLevel && imgrequest.m_decoded)
+                        {
+                            Interlocked.Increment(ref m_outstandingtextures);
+                        }
                     }
                 }
                 else
@@ -198,10 +195,12 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
         }
 
-        public void ProcessImageQueue(int count)
+        public bool ProcessImageQueue(int count, int maxpack)
         {
+
             // this can happen during Close()
-            if (m_client == null) return;
+            if (m_client == null)
+                return false;
             
             //Count is the number of textures we want to process in one go.
             //As part of this class re-write, that number will probably rise
@@ -214,7 +213,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
              if (m_lastloopprocessed == 0)
              {
                   if (m_client.PacketHandler == null || m_client.PacketHandler.PacketQueue == null || m_client.PacketHandler.PacketQueue.TextureThrottle == null)
-                      return;
+                      return false;
                  //This is decent for a semi fast machine, but we'll calculate it more accurately based on time below
                   threshold = m_client.PacketHandler.PacketQueue.TextureThrottle.Current / 6300;
                   m_lastloopprocessed = DateTime.Now.Ticks;
@@ -239,10 +238,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
              }
 
              if (m_client.PacketHandler == null)
-                 return;
+                 return false;
 
              if (m_client.PacketHandler.PacketQueue == null)
-                 return;
+                 return false;
 
             //First of all make sure our packet queue isn't above our threshold 
 
@@ -252,24 +251,21 @@ namespace OpenSim.Region.ClientStack.LindenUDP
              {
                 bool justreset = false;
             
-
-
                 for (int x = m_priorities.Count - 1; x > -1; x--)
                 {
                     
                     J2KImage imagereq = m_imagestore[m_priorities.Values[x]];
                     if (imagereq.m_decoded == true && !imagereq.m_completedSendAtCurrentDiscardLevel)
                     {
-
                         numCollected++;
                         //SendPackets will send up to ten packets per cycle
-                        if (imagereq.SendPackets(m_client))
+                        if (imagereq.SendPackets(m_client, maxpack))
                         {
                             //Send complete
                             if (!imagereq.m_completedSendAtCurrentDiscardLevel)
                             {
                                 imagereq.m_completedSendAtCurrentDiscardLevel = true;
-                                m_outstandingtextures--;
+                                Interlocked.Decrement(ref m_outstandingtextures);
                                 //Re-assign priority to bottom
                                 //Remove the old priority
                                 m_priorities.Remove(imagereq.m_designatedPriorityKey);
@@ -310,13 +306,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                         justreset = true; //prevents us from getting stuck in a loop
                     }
-
-
                 }
             }
 
-
-
+            return m_outstandingtextures != 0;
         }
 
         //Faux destructor
diff --git a/bin/OpenSim.ini.example b/bin/OpenSim.ini.example
index 91f86c5..5f2b46a 100644
--- a/bin/OpenSim.ini.example
+++ b/bin/OpenSim.ini.example
@@ -1208,12 +1208,15 @@
 
 [LLClient]
     ; Resend packets markes as reliable until they are received
+    ;
     ;ReliableIsImportant = false
 
     ; Maximum number of times to resend packets marked reliable
+    ;
     ;MaxReliableResends = 3
 
     ; Configures how ObjectUpdates are compressed.
+    ;
     ;TerseUpdatesPerPacket=10
     ;FullUpdatesPerPacket=14
     ;TerseUpdateRate=10
@@ -1221,6 +1224,22 @@
 
     ;PacketMTU = 1400
     
+    ; TextureUpdateRate (mS) determines how many times per second
+    ; texture send processing will occur. The default is 100mS.
+    ;
+    ;TextureRequestRate = 100
+
+    ; TextureSendLimit determines how many different textures
+    ; will be considered on each cycle. Textures are selected
+    ; by priority. The old mechanism specified a value of 10 for
+    ; this parameter.
+    ;
+    ;TextureSendLimit = 10
+
+    ; TextureDataLimit determines how many packets will be sent for
+    ; each of the selected textures. Default is 5.
+    ;
+    ;TextureDataLimit = 5
 
 ;;
 ;; These are defatuls that are overwritten below in [Architecture].