1 files changed, 55 insertions, 22 deletions

diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
index 12c2d86..e1d6f1b 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
@@ -1435,6 +1435,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// <param name="map">heightmap</param>
         public virtual void SendLayerData(float[] map)
         {
+            DoSendLayerData((object)map);
             ThreadPool.QueueUserWorkItem(DoSendLayerData, map);
         }
 
@@ -1450,16 +1451,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             {
                 for (int y = 0; y < 16; y++)
                 {
-                    // For some terrains, sending more than one terrain patch at once results in a libsecondlife exception
-                    // see http://opensimulator.org/mantis/view.php?id=1662
-                    //for (int x = 0; x < 16; x += 4)
-                    //{
-                    //    SendLayerPacket(map, y, x);
-                    //    Thread.Sleep(150);
-                    //}
-                    for (int x = 0; x < 16; x++)
-                    {
-                        SendLayerData(x, y, LLHeightFieldMoronize(map));
+                    for (int x = 0; x < 16; x += 4)
+                    {
+                        SendLayerPacket(LLHeightFieldMoronize(map), y, x);
                         Thread.Sleep(35);
                     }
                 }
@@ -1476,17 +1470,54 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// <param name="map">heightmap</param>
         /// <param name="px">X coordinate for patches 0..12</param>
         /// <param name="py">Y coordinate for patches 0..15</param>
-        // private void SendLayerPacket(float[] map, int y, int x)
-        // {
-        //     int[] patches = new int[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);
-        // }
+        private void SendLayerPacket(float[] map, int y, int x)
+        {
+            int[] patches = new int[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;
+
+            LayerDataPacket layerpack;
+            try
+            {
+                layerpack = TerrainCompressor.CreateLandPacket(map, patches);
+                layerpack.Header.Zerocoded = true;
+                layerpack.Header.Reliable = true;
+
+                if (layerpack.Length > 1000) // Oversize packet was created
+                {
+                    for (int xa = 0 ; xa < 4 ; xa++)
+                    {
+                        // Send oversize packet in individual patches
+                        //
+                        SendLayerData(x+xa, y, map);
+                    }
+                }
+                else
+                {
+                    OutPacket(layerpack, ThrottleOutPacketType.Land);
+                }
+            }
+            catch (OverflowException e)
+            {
+                for (int xa = 0 ; xa < 4 ; xa++)
+                {
+                    // Send oversize packet in individual patches
+                    //
+                    SendLayerData(x+xa, y, map);
+                }
+            }
+            catch (IndexOutOfRangeException e)
+            {
+                for (int xa = 0 ; xa < 4 ; xa++)
+                {
+                    // Bad terrain, send individual chunks
+                    //
+                    SendLayerData(x+xa, y, map);
+                }
+            }
+        }
 
         /// <summary>
         /// Sends a specified patch to a client
@@ -1507,6 +1538,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                 LayerDataPacket layerpack = TerrainCompressor.CreateLandPacket(((map.Length==65536)? map : LLHeightFieldMoronize(map)), patches);
                 layerpack.Header.Zerocoded = true;
+                layerpack.Header.Reliable = true;
 
                 OutPacket(layerpack, ThrottleOutPacketType.Land);
 
@@ -1556,7 +1588,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// <param name="windSpeeds">16x16 array of wind speeds</param>
         public virtual void SendWindData(Vector2[] windSpeeds)
         {
-            ThreadPool.QueueUserWorkItem(new WaitCallback(DoSendWindData), (object)windSpeeds);
+            DoSendWindData((object)windSpeeds);
+            // ThreadPool.QueueUserWorkItem(new WaitCallback(DoSendWindData), (object)windSpeeds);
         }
 
         /// <summary>