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added experimental packet tracker (LLPacketTracker.cs), which can be told to track a packet and if it hasn't been acked within a set time, trigger a IClientAPI event, that the application/scene can handle. Currently only terrain packet tracking is finished, Tracking for initial Prim packets (first full update for a prim) is being worked on. Future improvements would be to make it a more generic packet tracker with callback delegates instead of events. 

Add a test event handler (which would fire after a minute if a terrain packet hadn't been acked) to scene to handle the OnUnackedTerrain event, which currently just resends the terrain patch.
The idea of this packet tracking is for the region level application to be able to know if the client stack gave up on sending a packet.
0.6.0-stable
MW 2008-07-21 15:13:34 +00:00
parent cda3206633
commit fb096dfbd5
8 changed files with 342 additions and 50 deletions
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3
OpenSim/Framework/Communications/CommunicationsManager.cs
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@ -125,9 +125,7 @@ namespace OpenSim.Framework.Communications
{
return invService;
}
}
return null;
}
}
@ -139,7 +137,6 @@ namespace OpenSim.Framework.Communications
host = m_defaultInventoryHost;
}
lock (m_inventoryServices)
{
foreach (IInventoryServices service in m_inventoryServices)

11
OpenSim/Framework/IClientAPI.cs
View File

@ -299,6 +299,9 @@ namespace OpenSim.Framework
public delegate void GetScriptRunning(IClientAPI remoteClient, LLUUID objectID, LLUUID itemID);
public delegate void SetScriptRunning(IClientAPI remoteClient, LLUUID objectID, LLUUID itemID, bool running);
public delegate void TerrainUnacked(IClientAPI remoteClient, int patchX, int patchY);
#endregion
public interface IClientAPI
@ -501,6 +504,8 @@ namespace OpenSim.Framework
event SetScriptRunning OnSetScriptRunning;
event UpdateVector OnAutoPilotGo;
event TerrainUnacked OnUnackedTerrain;
// [Obsolete("IClientAPI.OutPacket SHOULD NOT EXIST outside of LLClientView please refactor appropriately.")]
void OutPacket(Packet newPack, ThrottleOutPacketType packType);
void SendWearables(AvatarWearable[] wearables, int serial);
@ -521,6 +526,8 @@ namespace OpenSim.Framework
void SendLayerData(float[] map);
void SendLayerData(int px, int py, float[] map);
void SendLayerData(int px, int py, float[] map, bool track);
void MoveAgentIntoRegion(RegionInfo regInfo, LLVector3 pos, LLVector3 look);
void InformClientOfNeighbour(ulong neighbourHandle, IPEndPoint neighbourExternalEndPoint);
AgentCircuitData RequestClientInfo();
@ -554,13 +561,13 @@ namespace OpenSim.Framework
LLVector3 pos, LLVector3 vel, LLVector3 acc, LLQuaternion rotation, LLVector3 rvel,
uint flags,
LLUUID objectID, LLUUID ownerID, string text, byte[] color, uint parentID, byte[] particleSystem,
byte clickAction, byte[] textureanim, bool attachment, uint AttachPoint, LLUUID AssetId, LLUUID SoundId, double SoundVolume, byte SoundFlags, double SoundRadius);
byte clickAction, byte[] textureanim, bool attachment, uint AttachPoint, LLUUID AssetId, LLUUID SoundId, double SoundVolume, byte SoundFlags, double SoundRadius, bool track);
void SendPrimitiveToClient(ulong regionHandle, ushort timeDilation, uint localID, PrimitiveBaseShape primShape,
LLVector3 pos, LLVector3 vel, LLVector3 acc, LLQuaternion rotation, LLVector3 rvel,
uint flags, LLUUID objectID, LLUUID ownerID, string text, byte[] color,
uint parentID, byte[] particleSystem, byte clickAction);
uint parentID, byte[] particleSystem, byte clickAction, bool track);
void SendPrimTerseUpdate(ulong regionHandle, ushort timeDilation, uint localID, LLVector3 position,
LLQuaternion rotation, LLVector3 velocity, LLVector3 rotationalvelocity, byte state, LLUUID AssetId);

115
OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
View File

@ -118,6 +118,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
private Dictionary<string, LLUUID> m_defaultAnimations = new Dictionary<string, LLUUID>();
private LLPacketTracker m_packetTracker;
/* protected variables */
protected static Dictionary<PacketType, PacketMethod> PacketHandlers =
@ -282,6 +284,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
private SetScriptRunning handlerSetScriptRunning = null;
private UpdateVector handlerAutoPilotGo = null;
private TerrainUnacked handlerUnackedTerrain = null;
//**
/* Properties */
public LLUUID SecureSessionId
@ -377,6 +383,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
public LLClientView(EndPoint remoteEP, IScene scene, AssetCache assetCache, LLPacketServer packServer,
AgentCircuitManager authenSessions, LLUUID agentId, LLUUID sessionId, uint circuitCode, EndPoint proxyEP)
{
m_packetTracker = new LLPacketTracker(this);
m_moneyBalance = 1000;
m_channelVersion = Helpers.StringToField(scene.GetSimulatorVersion());
@ -410,6 +418,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
RegisterLocalPacketHandlers();
m_clientThread = new Thread(new ThreadStart(AuthUser));
m_clientThread.Name = "ClientThread";
m_clientThread.IsBackground = true;
@ -654,6 +663,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
# endregion
protected int m_terrainCheckerCount = 0;
/// <summary>
/// Event handler for check client timer
/// checks to ensure that the client is still connected
@ -685,7 +695,17 @@ namespace OpenSim.Region.ClientStack.LindenUDP
m_probesWithNoIngressPackets = 0;
m_lastPacketsReceived = m_packetsReceived;
}
//SendPacketStats();
m_packetTracker.Process();
if (m_terrainCheckerCount >= 4)
{
m_packetTracker.TerrainPacketCheck();
// m_packetTracker.PrimPacketCheck();
m_terrainCheckerCount = -1;
}
m_terrainCheckerCount++;
}
# region Setup
@ -934,6 +954,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
public event SetScriptRunning OnSetScriptRunning;
public event UpdateVector OnAutoPilotGo;
public event TerrainUnacked OnUnackedTerrain;
#region Scene/Avatar to Client
/// <summary>
@ -1083,29 +1105,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
public virtual void SendLayerData(float[] map)
{
ThreadPool.QueueUserWorkItem(new WaitCallback(DoSendLayerData), (object)map);
//try
//{
// int[] patches = new int[4];
// for (int y = 0; y < 16; y++)
// {
// for (int x = 0; x < 16; x += 4)
// {
// patches[0] = x + 0 + y * 16;
// patches[1] = x + 1 + y * 16;
// patches[2] = x + 2 + y * 16;
// patches[3] = x + 3 + y * 16;
// Packet layerpack = LLClientView.TerrainManager.CreateLandPacket(map, patches);
// OutPacket(layerpack, ThrottleOutPacketType.Land);
// }
// }
//}
//catch (Exception e)
//{
// m_log.Warn("[client]: " +
// "ClientView.API.cs: SendLayerData() - Failed with exception " + e.ToString());
//}
}
/// <summary>
@ -1165,6 +1165,11 @@ namespace OpenSim.Region.ClientStack.LindenUDP
/// <param name="py">Patch coordinate (y) 0..15</param>
/// <param name="map">heightmap</param>
public void SendLayerData(int px, int py, float[] map)
{
SendLayerData(px, py, map, true);
}
public void SendLayerData(int px, int py, float[] map, bool track)
{
try
{
@ -1177,6 +1182,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP
LayerDataPacket layerpack = LLClientView.TerrainManager.CreateLandPacket(map, patches);
layerpack.Header.Zerocoded = true;
if (track)
{
layerpack.Header.Sequence = NextSeqNum();
m_packetTracker.TrackTerrainPacket(layerpack.Header.Sequence, px, py);
}
OutPacket(layerpack, ThrottleOutPacketType.Land);
}
catch (Exception e)
@ -2297,14 +2309,14 @@ namespace OpenSim.Region.ClientStack.LindenUDP
ulong regionHandle, ushort timeDilation, uint localID, PrimitiveBaseShape primShape,
LLVector3 pos, LLVector3 vel, LLVector3 acc, LLQuaternion rotation, LLVector3 rvel,
uint flags, LLUUID objectID, LLUUID ownerID, string text, byte[] color,
uint parentID, byte[] particleSystem, byte clickAction)
uint parentID, byte[] particleSystem, byte clickAction, bool track)
{
byte[] textureanim = new byte[0];
SendPrimitiveToClient(regionHandle, timeDilation, localID, primShape, pos, vel,
acc, rotation, rvel, flags,
objectID, ownerID, text, color, parentID, particleSystem,
clickAction, textureanim, false, (uint)0, LLUUID.Zero, LLUUID.Zero, 0, 0, 0);
clickAction, textureanim, false, (uint)0, LLUUID.Zero, LLUUID.Zero, 0, 0, 0, track);
}
public void SendPrimitiveToClient(
@ -2312,8 +2324,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
LLVector3 pos, LLVector3 velocity, LLVector3 acceleration, LLQuaternion rotation, LLVector3 rotational_velocity,
uint flags,
LLUUID objectID, LLUUID ownerID, string text, byte[] color, uint parentID, byte[] particleSystem,
byte clickAction, byte[] textureanim, bool attachment, uint AttachPoint, LLUUID AssetId, LLUUID SoundId, double SoundGain, byte SoundFlags, double SoundRadius)
byte clickAction, byte[] textureanim, bool attachment, uint AttachPoint, LLUUID AssetId, LLUUID SoundId, double SoundGain, byte SoundFlags, double SoundRadius, bool track)
{
if (rotation.X == rotation.Y && rotation.Y == rotation.Z && rotation.Z == rotation.W && rotation.W == 0)
rotation = LLQuaternion.Identity;
@ -2396,6 +2409,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP
outPacket.ObjectData[0].TextureAnim = textureanim;
}
outPacket.Header.Zerocoded = true;
if (track)
{
outPacket.Header.Sequence = NextSeqNum();
m_packetTracker.TrackPrimPacket(outPacket.Header.Sequence, objectID);
}
OutPacket(outPacket, ThrottleOutPacketType.Task);
}
@ -3816,7 +3836,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
if (!Pack.Header.Resent)
{
Pack.Header.Sequence = NextSeqNum();
if (Pack.Header.Sequence == 0)
{
Pack.Header.Sequence = NextSeqNum();
}
if (Pack.Header.Reliable) //DIRTY HACK
{
@ -3878,13 +3901,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
{
foreach (uint ackedPacketId in NewPack.Header.AckList)
{
Packet ackedPacket;
if (m_needAck.TryGetValue(ackedPacketId, out ackedPacket))
{
m_unAckedBytes -= ackedPacket.ToBytes().Length;
m_needAck.Remove(ackedPacketId);
}
RemovePacketFromNeedAckList(ackedPacketId);
}
}
}
@ -3899,12 +3916,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
foreach (PacketAckPacket.PacketsBlock block in ackPacket.Packets)
{
uint ackedPackId = block.ID;
Packet ackedPacket;
if (m_needAck.TryGetValue(ackedPackId, out ackedPacket))
{
m_unAckedBytes -= ackedPacket.ToBytes().Length;
m_needAck.Remove(ackedPackId);
}
RemovePacketFromNeedAckList(ackedPackId);
}
}
}
@ -3926,6 +3938,18 @@ namespace OpenSim.Region.ClientStack.LindenUDP
}
}
private void RemovePacketFromNeedAckList(uint ackedPackId)
{
Packet ackedPacket;
if (m_needAck.TryGetValue(ackedPackId, out ackedPacket))
{
m_unAckedBytes -= ackedPacket.ToBytes().Length;
m_needAck.Remove(ackedPackId);
m_packetTracker.PacketAck(ackedPackId);
}
}
/// <summary>
/// The dreaded OutPacket. This should only be called from withink the ClientStack itself right now
/// This is the entry point for simulator packets to go out to the client.
@ -4037,6 +4061,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
SendAcks();
ResendUnacked();
SendPacketStats();
// TerrainPacketTrack();
}
/// <summary>
@ -4053,6 +4078,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
}
}
/// <summary>
/// Emties out the old packets in the packet duplication tracking table.
/// </summary>
@ -4092,6 +4118,15 @@ namespace OpenSim.Region.ClientStack.LindenUDP
#endregion
public void TriggerTerrainUnackedEvent(int patchX, int patchY)
{
handlerUnackedTerrain = OnUnackedTerrain;
if (handlerUnackedTerrain != null)
{
handlerUnackedTerrain(this, patchX, patchY);
}
}
// Previously ClientView.ProcessPackets
public bool AddMoney(int debit)

234
OpenSim/Region/ClientStack/LindenUDP/LLPacketTracker.cs Normal file
View File

@ -0,0 +1,234 @@
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
using libsecondlife;
namespace OpenSim.Region.ClientStack.LindenUDP
{
public class LLPacketTracker
{
public delegate void PacketAcked(uint sequenceNumber);
public event PacketAcked OnPacketAcked;
protected List<uint> m_beenAcked = new List<uint>();
protected TerrainPacketTracker[,] m_sentTerrainPackets = new TerrainPacketTracker[16, 16];
protected Dictionary<LLUUID, PrimPacketTracker> m_sendPrimPackets = new Dictionary<LLUUID, PrimPacketTracker>();
protected LLClientView m_parentClient;
public LLPacketTracker(LLClientView parent)
{
m_parentClient = parent;
OnPacketAcked += TerrainPacketAcked;
//OnPacketAcked += PrimPacketAcked;
}
public void PacketAck(uint sequenceNumber)
{
lock (m_beenAcked)
{
m_beenAcked.Add(sequenceNumber);
}
}
public void TrackTerrainPacket(uint sequenceNumber, int patchX, int patchY)
{
TerrainPacketTracker tracker = new TerrainPacketTracker();
tracker.X = patchX;
tracker.Y = patchY;
tracker.SeqNumber = sequenceNumber;
tracker.TimeSent = DateTime.Now;
lock (m_sentTerrainPackets)
{
m_sentTerrainPackets[patchX, patchY] = tracker;
}
}
public void TrackPrimPacket(uint sequenceNumber, LLUUID primID)
{
PrimPacketTracker tracker = new PrimPacketTracker();
tracker.PrimID = primID;
tracker.TimeSent = DateTime.Now;
tracker.SeqNumber = sequenceNumber;
lock (m_sendPrimPackets)
{
m_sendPrimPackets[primID] = tracker;
}
}
public void TerrainPacketCheck()
{
DateTime now = DateTime.Now;
List<TerrainPacketTracker> resendList = new List<TerrainPacketTracker>();
lock (m_sentTerrainPackets)
{
for (int y = 0; y < 16; y++)
{
for (int x = 0; x < 16; x++)
{
if (m_sentTerrainPackets[x, y] != null)
{
TerrainPacketTracker tracker = m_sentTerrainPackets[x, y];
if ((now - tracker.TimeSent) > TimeSpan.FromMinutes(1))
{
tracker.TimeSent = now;
m_sentTerrainPackets[x, y] = null;
resendList.Add(tracker);
}
}
}
}
}
foreach (TerrainPacketTracker tracker in resendList)
{
m_parentClient.TriggerTerrainUnackedEvent(tracker.X, tracker.Y);
}
}
public void PrimPacketCheck()
{
DateTime now = DateTime.Now;
List<PrimPacketTracker> resendList = new List<PrimPacketTracker>();
List<PrimPacketTracker> ackedList = new List<PrimPacketTracker>();
lock (m_sendPrimPackets)
{
foreach (PrimPacketTracker tracker in m_sendPrimPackets.Values)
{
if (tracker.Acked)
{
ackedList.Add(tracker);
}
else if (((now - tracker.TimeSent) > TimeSpan.FromMinutes(1)) && (!tracker.Acked))
{
resendList.Add(tracker);
}
}
}
foreach (PrimPacketTracker tracker in resendList)
{
lock (m_sendPrimPackets)
{
m_sendPrimPackets.Remove(tracker.PrimID);
}
//call event
Console.WriteLine("Prim packet not acked, " + tracker.PrimID.ToString());
}
RemovePrimTrackers(ackedList);
}
public void PrimTrackerCleanup()
{
List<PrimPacketTracker> ackedList = new List<PrimPacketTracker>();
lock (m_sendPrimPackets)
{
foreach (PrimPacketTracker tracker in m_sendPrimPackets.Values)
{
if (tracker.Acked)
{
ackedList.Add(tracker);
}
}
}
Thread.Sleep(15); //give a little bit of time for other code to access list before we lock it again
RemovePrimTrackers(ackedList);
}
protected void RemovePrimTrackers(List<PrimPacketTracker> ackedList)
{
lock (m_sendPrimPackets)
{
foreach (PrimPacketTracker tracker in ackedList)
{
m_sendPrimPackets.Remove(tracker.PrimID);
}
}
}
protected void TerrainPacketAcked(uint sequence)
{
lock (m_sentTerrainPackets)
{
for (int y = 0; y < 16; y++)
{
for (int x = 0; x < 16; x++)
{
if (m_sentTerrainPackets[x, y] != null)
{
if (m_sentTerrainPackets[x, y].SeqNumber == sequence)
{
m_sentTerrainPackets[x, y] = null;
return;
}
}
}
}
}
}
protected void PrimPacketAcked(uint sequence)
{
lock (m_sendPrimPackets)
{
foreach (PrimPacketTracker tracker in m_sendPrimPackets.Values)
{
if (tracker.SeqNumber == sequence)
{
tracker.Acked = true;
break;
}
}
}
}
public void Process()
{
List<uint> ackedPackets = null;
lock (m_beenAcked)
{
ackedPackets = new List<uint>(m_beenAcked);
m_beenAcked.Clear();
}
if (ackedPackets != null)
{
foreach (uint packetId in ackedPackets)
{
if (OnPacketAcked != null)
{
OnPacketAcked(packetId);
}
}
}
// ackedPackets.Clear();
ackedPackets = null;
}
public class TerrainPacketTracker
{
public uint SeqNumber = 0;
public int X;
public int Y;
public DateTime TimeSent;
}
public class PrimPacketTracker
{
public uint SeqNumber = 0;
public DateTime TimeSent;
public LLUUID PrimID;
public bool Acked = false;
}
}
}

9
OpenSim/Region/Environment/Modules/World/NPC/NPCAvatar.cs
View File

@ -296,6 +296,8 @@ namespace OpenSim.Region.Environment.Modules.World.NPC
public event GetScriptRunning OnGetScriptRunning;
public event SetScriptRunning OnSetScriptRunning;
public event UpdateVector OnAutoPilotGo;
public event TerrainUnacked OnUnackedTerrain;
#pragma warning restore 67
#endregion
@ -438,6 +440,9 @@ namespace OpenSim.Region.Environment.Modules.World.NPC
public virtual void SendLayerData(int px, int py, float[] map)
{
}
public virtual void SendLayerData(int px, int py, float[] map, bool track)
{
}
public virtual void MoveAgentIntoRegion(RegionInfo regInfo, LLVector3 pos, LLVector3 look)
{
@ -513,7 +518,7 @@ namespace OpenSim.Region.Environment.Modules.World.NPC
LLVector3 acc, LLQuaternion rotation, LLVector3 rvel, uint flags,
LLUUID objectID, LLUUID ownerID, string text, byte[] color,
uint parentID,
byte[] particleSystem, byte clickAction)
byte[] particleSystem, byte clickAction, bool track)
{
}
public virtual void SendPrimitiveToClient(ulong regionHandle, ushort timeDilation, uint localID,
@ -522,7 +527,7 @@ namespace OpenSim.Region.Environment.Modules.World.NPC
LLUUID objectID, LLUUID ownerID, string text, byte[] color,
uint parentID,
byte[] particleSystem, byte clickAction, byte[] textureanimation,
bool attachment, uint AttachmentPoint, LLUUID AssetId, LLUUID SoundId, double SoundVolume, byte SoundFlags, double SoundRadius)
bool attachment, uint AttachmentPoint, LLUUID AssetId, LLUUID SoundId, double SoundVolume, byte SoundFlags, double SoundRadius, bool track)
{
}
public virtual void SendPrimTerseUpdate(ulong regionHandle, ushort timeDilation, uint localID,

9
OpenSim/Region/Environment/Scenes/Scene.cs
View File

@ -2084,6 +2084,8 @@ namespace OpenSim.Region.Environment.Scenes
client.OnGetScriptRunning += GetScriptRunning;
client.OnSetScriptRunning += SetScriptRunning;
client.OnUnackedTerrain += TerrainUnAcked;
// EventManager.TriggerOnNewClient(client);
}
@ -3703,5 +3705,12 @@ namespace OpenSim.Region.Environment.Scenes
// client.SendParcelMediaCommand((uint)(4), ParcelMediaCommandEnum.Play, 0);
// });
}
public void TerrainUnAcked(IClientAPI client, int patchX, int patchY)
{
//Console.WriteLine("Terrain packet unacked, resending patch: " + patchX + " , " + patchY);
client.SendLayerData(patchX, patchY, Heightmap.GetFloatsSerialised());
}
}
}

2
OpenSim/Region/Environment/Scenes/SceneObjectPart.cs
View File

@ -2085,7 +2085,7 @@ namespace OpenSim.Region.Environment.Scenes
remoteClient.SendPrimitiveToClient(m_regionHandle, (ushort)(m_parentGroup.GetTimeDilation() * (float)ushort.MaxValue), LocalId, m_shape,
lPos, Velocity, Acceleration, RotationOffset, RotationalVelocity, clientFlags, m_uuid, _ownerID,
m_text, color, _parentID, m_particleSystem, m_clickAction, m_TextureAnimation, m_IsAttachment,
m_attachmentPoint,fromAssetID, Sound, SoundGain, SoundFlags, SoundRadius);
m_attachmentPoint,fromAssetID, Sound, SoundGain, SoundFlags, SoundRadius, false);
}
/// <summary>

9
OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs
View File

@ -202,6 +202,8 @@ namespace OpenSim.Region.Examples.SimpleModule
public event SetScriptRunning OnSetScriptRunning;
public event UpdateVector OnAutoPilotGo;
public event TerrainUnacked OnUnackedTerrain;
#pragma warning restore 67
private LLUUID myID = LLUUID.Random();
@ -352,6 +354,9 @@ namespace OpenSim.Region.Examples.SimpleModule
public virtual void SendLayerData(int px, int py, float[] map)
{
}
public virtual void SendLayerData(int px, int py, float[] map, bool track)
{
}
public virtual void MoveAgentIntoRegion(RegionInfo regInfo, LLVector3 pos, LLVector3 look)
{
@ -427,7 +432,7 @@ namespace OpenSim.Region.Examples.SimpleModule
LLVector3 acc, LLQuaternion rotation, LLVector3 rvel, uint flags,
LLUUID objectID, LLUUID ownerID, string text, byte[] color,
uint parentID,
byte[] particleSystem, byte clickAction)
byte[] particleSystem, byte clickAction, bool track)
{
}
public virtual void SendPrimitiveToClient(ulong regionHandle, ushort timeDilation, uint localID,
@ -436,7 +441,7 @@ namespace OpenSim.Region.Examples.SimpleModule
LLUUID objectID, LLUUID ownerID, string text, byte[] color,
uint parentID,
byte[] particleSystem, byte clickAction, byte[] textureanimation,
bool attachment, uint AttachmentPoint, LLUUID AssetId, LLUUID SoundId, double SoundVolume, byte SoundFlags, double SoundRadius)
bool attachment, uint AttachmentPoint, LLUUID AssetId, LLUUID SoundId, double SoundVolume, byte SoundFlags, double SoundRadius, bool track)
{
}
public virtual void SendPrimTerseUpdate(ulong regionHandle, ushort timeDilation, uint localID,