- Lower TIME_MS_TOLERANCE to 200ms - Allow m_updateFlag to be reset to 0 in the event of a terse update being rejected - Re-add a synchronous SendTo for certain types of packets

OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs

@@ -399,6 +399,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             #region Queue or Send
 
             OutgoingPacket outgoingPacket = new OutgoingPacket(udpClient, buffer, category);
+            outgoingPacket.Type = type;
 
             if (!outgoingPacket.Client.EnqueueOutgoing(outgoingPacket))
                 SendPacketFinal(outgoingPacket);
@@ -510,6 +511,7 @@ 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 sendSynchronous = false;
             LLUDPClient udpClient = outgoingPacket.Client;
 
             if (!udpClient.IsConnected)
@@ -565,9 +567,27 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             if (isReliable)
                 Interlocked.Add(ref udpClient.UnackedBytes, outgoingPacket.Buffer.DataLength);
 
-            // Put the UDP payload on the wire
+            //Some packet types need to be sent synchonously.
-            AsyncBeginSend(buffer);
+            //Sorry, i know it's not optimal, but until the LL client
+            //manages packets correctly and re-orders them as required, this is necessary.
 
+            if (outgoingPacket.Type == PacketType.ImprovedTerseObjectUpdate 
+                || outgoingPacket.Type == PacketType.ChatFromSimulator 
+                || outgoingPacket.Type == PacketType.ObjectUpdate
+                || outgoingPacket.Type == PacketType.LayerData)
+            {
+                sendSynchronous = true;
+            }
+
+            // Put the UDP payload on the wire
+            if (sendSynchronous == true)
+            {
+                SyncBeginSend(buffer);
+            }
+            else
+            {
+                AsyncBeginSend(buffer);
+            }
             // Keep track of when this packet was sent out (right now)
             outgoingPacket.TickCount = Environment.TickCount & Int32.MaxValue;
         }

OpenSim/Region/ClientStack/LindenUDP/OpenSimUDPBase.cs

@@ -246,6 +246,24 @@ namespace OpenMetaverse
             }
         }
 
+        public void SyncBeginSend(UDPPacketBuffer buf)
+        {
+            if (!m_shutdownFlag)
+            {
+                try
+                {
+                    m_udpSocket.SendTo(
+                        buf.Data,
+                        0,
+                        buf.DataLength,
+                        SocketFlags.None,
+                        buf.RemoteEndPoint);
+                }
+                catch (SocketException) { }
+                catch (ObjectDisposedException) { }
+            }
+        }
+
         public void AsyncBeginSend(UDPPacketBuffer buf)
         {
             if (!m_shutdownFlag)

OpenSim/Region/ClientStack/LindenUDP/OutgoingPacket.cs

@@ -28,6 +28,7 @@
 using System;
 using OpenSim.Framework;
 using OpenMetaverse;
+using OpenMetaverse.Packets;
 
 namespace OpenSim.Region.ClientStack.LindenUDP
 {
@@ -52,7 +53,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         public int TickCount;
         /// <summary>Category this packet belongs to</summary>
         public ThrottleOutPacketType Category;
-
+        /// <summary>The type of packet so its delivery method can be determined</summary>
+        public PacketType Type;
         /// <summary>
         /// Default constructor
         /// </summary>

OpenSim/Region/Framework/Scenes/SceneObjectPart.cs

@@ -1064,14 +1064,6 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        /// <summary>
-        /// Clear all pending updates of parts to clients
-        /// </summary>
-        private void ClearUpdateSchedule()
-        {
-            m_updateFlag = 0;
-        }
-
         private void SendObjectPropertiesToClient(UUID AgentID)
         {
             ScenePresence[] avatars = m_parentGroup.Scene.GetScenePresences();
@@ -2387,8 +2379,8 @@ namespace OpenSim.Region.Framework.Scenes
         {
             const float ROTATION_TOLERANCE = 0.01f;
             const float VELOCITY_TOLERANCE = 0.001f;
-            const float POSITION_TOLERANCE = 0.05f;
+            const float POSITION_TOLERANCE = 0.05f; // I don't like this, but I suppose it's necessary
-            const int TIME_MS_TOLERANCE = 3000;
+            const int TIME_MS_TOLERANCE = 200; //llSetPos has a 200ms delay. This should NOT be 3 seconds.
 
             if (m_updateFlag == 1)
             {
@@ -2401,7 +2393,7 @@ namespace OpenSim.Region.Framework.Scenes
                     Environment.TickCount - m_lastTerseSent > TIME_MS_TOLERANCE)
                 {
                     AddTerseUpdateToAllAvatars();
-                    ClearUpdateSchedule();
+                    
 
                     // This causes the Scene to 'poll' physical objects every couple of frames
                     // bad, so it's been replaced by an event driven method.
@@ -2419,13 +2411,15 @@ namespace OpenSim.Region.Framework.Scenes
                     m_lastAngularVelocity = AngularVelocity;
                     m_lastTerseSent = Environment.TickCount;
                 }
+                //Moved this outside of the if clause so updates don't get blocked.. *sigh*
+                m_updateFlag = 0; //Why were we calling a function to do this? Inefficient! *screams* 
             }
             else
             {
                 if (m_updateFlag == 2) // is a new prim, just created/reloaded or has major changes
                 {
                     AddFullUpdateToAllAvatars();
-                    ClearUpdateSchedule();
+                    m_updateFlag = 0; //Same here
                 }
             }
         }