Mantis#1965. Thank you kindly, HomerHorwitz for a patch that:

Places touched:
- Added two events for in-packets to LLCLientView: RegionHandleRequest and
  ParcelInfoRequest
- Added sending of two out-packets to LLCLientView: RegionIDAndHandleReply and
  ParcelInfoReply.
- Scene handles the RegionHandleRequest, LandManagementModule the
  ParcelInfoRequest
- Added inter-region request for LandData by RegionHandle and local position.
  This was implemented as XML-RPC request. The returned LandData isn't
  complete, it only contains the data necessary for answering the
  ParcelInfoRequest
- Added new CAPS (0009) for RemoteParcelRequest and some methods for LandData
  handling to LandManagementModule
- Added methods for fake parcelID creation and parsing to Util
- Fixed missing implementation of interface methods.
- Added new file:
    OpenSim/Framework/Communications/Capabilities/LLSDRemoteParcelResponse.cs
  NOTE: This is part of the patch, too.
Due to the many places touched, I would consider this patch as experimental.

2 files changed, 33 insertions, 1 deletions

diff --git a/OpenSim/Region/Environment/Scenes/Scene.cs b/OpenSim/Region/Environment/Scenes/Scene.cs
index 2e89e4b..9b0b53a 100644
--- a/OpenSim/Region/Environment/Scenes/Scene.cs
+++ b/OpenSim/Region/Environment/Scenes/Scene.cs
@@ -2170,6 +2170,8 @@ namespace OpenSim.Region.Environment.Scenes
             client.OnScriptReset += ProcessScriptReset;
             client.OnGetScriptRunning += GetScriptRunning;
             client.OnSetScriptRunning += SetScriptRunning;
+            
+            client.OnRegionHandleRequest += RegionHandleRequest;
 
             client.OnUnackedTerrain += TerrainUnAcked;
 
@@ -2502,6 +2504,7 @@ namespace OpenSim.Region.Environment.Scenes
             m_sceneGridService.OnRemoveKnownRegionFromAvatar += HandleRemoveKnownRegionsFromAvatar;
             m_sceneGridService.OnLogOffUser += HandleLogOffUserFromGrid;
             m_sceneGridService.KillObject += SendKillObject;
+            m_sceneGridService.OnGetLandData += GetLandData;
         }
 
         /// <summary>
@@ -2518,6 +2521,7 @@ namespace OpenSim.Region.Environment.Scenes
             m_sceneGridService.OnExpectUser -= NewUserConnection;
             m_sceneGridService.OnAvatarCrossingIntoRegion -= AgentCrossing;
             m_sceneGridService.OnCloseAgentConnection -= CloseConnection;
+            m_sceneGridService.OnGetLandData -= GetLandData;
 
             m_sceneGridService.Close();
         }
@@ -3436,6 +3440,12 @@ namespace OpenSim.Region.Environment.Scenes
             return LandChannel.GetLandObject(x, y).landData;
         }
 
+        public LandData GetLandData(uint x, uint y)
+        {
+            m_log.DebugFormat("[SCENE] returning land for {0},{1}", x, y);
+            return LandChannel.GetLandObject((int)x, (int)y).landData;
+        }
+
         public void SetLandMusicURL(float x, float y, string url)
         {
             ILandObject land = LandChannel.GetLandObject(x, y);
@@ -3833,6 +3843,14 @@ namespace OpenSim.Region.Environment.Scenes
 //                client.SendParcelMediaCommand((uint)(4), ParcelMediaCommandEnum.Play, 0);
 //            });
         }
+        
+        public void RegionHandleRequest(IClientAPI client, LLUUID regionID)
+        {
+            RegionInfo info;
+            if(regionID == RegionInfo.RegionID) info = RegionInfo;
+            else info = CommsManager.GridService.RequestNeighbourInfo(regionID);
+            if(info != null) client.SendRegionHandle(regionID, info.RegionHandle);
+        }
 
 
         public void TerrainUnAcked(IClientAPI client, int patchX, int patchY)
diff --git a/OpenSim/Region/Environment/Scenes/SceneCommunicationService.cs b/OpenSim/Region/Environment/Scenes/SceneCommunicationService.cs
index 008d67a..35a7434 100644
--- a/OpenSim/Region/Environment/Scenes/SceneCommunicationService.cs
+++ b/OpenSim/Region/Environment/Scenes/SceneCommunicationService.cs
@@ -59,7 +59,8 @@ namespace OpenSim.Region.Environment.Scenes
         public event ChildAgentUpdate OnChildAgentUpdate;
         public event RemoveKnownRegionsFromAvatarList OnRemoveKnownRegionFromAvatar;
         public event LogOffUser OnLogOffUser;
-
+        public event GetLandData OnGetLandData;
+        
         private AgentCrossing handlerAvatarCrossingIntoRegion = null; // OnAvatarCrossingIntoRegion;
         private ExpectUserDelegate handlerExpectUser = null; // OnExpectUser;
         private ExpectPrimDelegate handlerExpectPrim = null; // OnExpectPrim;
@@ -69,6 +70,7 @@ namespace OpenSim.Region.Environment.Scenes
         private ChildAgentUpdate handlerChildAgentUpdate = null; // OnChildAgentUpdate;
         private RemoveKnownRegionsFromAvatarList handlerRemoveKnownRegionFromAvatar = null; // OnRemoveKnownRegionFromAvatar;
         private LogOffUser handlerLogOffUser = null;
+        private GetLandData handlerGetLandData = null; // OnGetLandData 
 
         public KillObjectDelegate KillObject;
         public string _debugRegionName = String.Empty;
@@ -108,6 +110,7 @@ namespace OpenSim.Region.Environment.Scenes
                 regionCommsHost.OnRegionUp += newRegionUp;
                 regionCommsHost.OnChildAgentUpdate += ChildAgentUpdate;
                 regionCommsHost.OnLogOffUser += GridLogOffUser;
+                regionCommsHost.OnGetLandData += FetchLandData;
             }
             else
             {
@@ -131,6 +134,7 @@ namespace OpenSim.Region.Environment.Scenes
                 regionCommsHost.OnExpectPrim -= IncomingPrimCrossing;
                 regionCommsHost.OnAvatarCrossingIntoRegion -= AgentCrossing;
                 regionCommsHost.OnCloseAgentConnection -= CloseConnection;
+                regionCommsHost.OnGetLandData -= FetchLandData;
                 m_commsProvider.GridService.DeregisterRegion(m_regionInfo);
                 regionCommsHost = null;
             }
@@ -227,6 +231,16 @@ namespace OpenSim.Region.Environment.Scenes
             return false;
         }
 
+        protected LandData FetchLandData(uint x, uint y)
+        {
+            handlerGetLandData = OnGetLandData;
+            if (handlerGetLandData != null)
+            {
+                return handlerGetLandData(x, y);
+            }
+            return null;
+        }
+        
         #endregion
 
         #region Inform Client of Neighbours