Fix to the scenario where we send an agent to a neighbouring sim (via teleport), then tell our neighbours to close the agents.. thereby disconnecting the user. Added a new CloseChildAgent method in lieu of CloseAgent. This has been a long standing problem - with any luck this will cure it.

OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/LocalSimulationConnector.cs

@@ -290,6 +290,23 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation
             return false;
         }
 
+        public bool CloseChildAgent(GridRegion destination, UUID id)
+        {
+            if (destination == null)
+                return false;
+
+            foreach (Scene s in m_sceneList)
+            {
+                if (s.RegionInfo.RegionID == destination.RegionID)
+                {
+                    //m_log.Debug("[LOCAL COMMS]: Found region to SendCloseAgent");
+                    return s.IncomingCloseChildAgent(id);
+                }
+            }
+            //m_log.Debug("[LOCAL COMMS]: region not found in SendCloseAgent");
+            return false;
+        }
+
         /**
          * Object-related communications
          */

OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/RemoteSimulationConnector.cs

@@ -253,6 +253,21 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation
             return false;
         }
 
+        public bool CloseChildAgent(GridRegion destination, UUID id)
+        {
+            if (destination == null)
+                return false;
+
+            // Try local first
+            if (m_localBackend.CloseChildAgent(destination, id))
+                return true;
+
+            // else do the remote thing
+            if (!m_localBackend.IsLocalRegion(destination.RegionHandle))
+                return m_remoteConnector.CloseChildAgent(destination, id);
+
+            return false;
+        }
 
         public bool CloseAgent(GridRegion destination, UUID id)
         {

OpenSim/Region/Framework/Interfaces/IInterregionComms.cs

@@ -67,6 +67,14 @@ namespace OpenSim.Region.Framework.Interfaces
         /// <returns></returns>
         bool SendReleaseAgent(ulong regionHandle, UUID id, string uri);
 
+        /// <summary>
+        /// Close chid agent.
+        /// </summary>
+        /// <param name="regionHandle"></param>
+        /// <param name="id"></param>
+        /// <returns></returns>
+        bool SendCloseChildAgent(ulong regionHandle, UUID id);
+
         /// <summary>
         /// Close agent.
         /// </summary>

OpenSim/Region/Framework/Scenes/Scene.cs

@@ -3914,12 +3914,22 @@ namespace OpenSim.Region.Framework.Scenes
             return false;
         }
 
+        public bool IncomingCloseAgent(UUID agentID)
+        {
+            return IncomingCloseAgent(agentID, false);
+        }
+
+        public bool IncomingCloseChildAgent(UUID agentID)
+        {
+            return IncomingCloseAgent(agentID, true);
+        }
+
         /// <summary>
         /// Tell a single agent to disconnect from the region.
         /// </summary>
-        /// <param name="regionHandle"></param>
         /// <param name="agentID"></param>
-        public bool IncomingCloseAgent(UUID agentID)
+        /// <param name="childOnly"></param>
+        public bool IncomingCloseAgent(UUID agentID, bool childOnly)
         {
             //m_log.DebugFormat("[SCENE]: Processing incoming close agent for {0}", agentID);
 
@@ -3931,7 +3941,7 @@ namespace OpenSim.Region.Framework.Scenes
                 {
                    m_sceneGraph.removeUserCount(false);
                 }
-                else
+                else if (!childOnly)
                 {
                    m_sceneGraph.removeUserCount(true);
                 }
@@ -3947,9 +3957,12 @@ namespace OpenSim.Region.Framework.Scenes
                     }
                     else
                         presence.ControllingClient.SendShutdownConnectionNotice();
+                    presence.ControllingClient.Close();
+                }
+                else if (!childOnly)
+                {
+                    presence.ControllingClient.Close();
                 }
-
-                presence.ControllingClient.Close();
                 return true;
             }
 

OpenSim/Region/Framework/Scenes/SceneCommunicationService.cs

@@ -281,7 +281,7 @@ namespace OpenSim.Region.Framework.Scenes
             uint x = 0, y = 0;
             Utils.LongToUInts(regionHandle, out x, out y);
             GridRegion destination = m_scene.GridService.GetRegionByPosition(UUID.Zero, (int)x, (int)y);
-            m_scene.SimulationService.CloseAgent(destination, agentID);
+            m_scene.SimulationService.CloseChildAgent(destination, agentID);
         }
 
         private void SendCloseChildAgentCompleted(IAsyncResult iar)

OpenSim/Server/Handlers/Simulation/AgentHandlers.cs

@@ -108,6 +108,11 @@ namespace OpenSim.Server.Handlers.Simulation
                 DoAgentDelete(request, responsedata, agentID, action, regionID);
                 return responsedata;
             }
+            else if (method.Equals("DELETECHILD"))
+            {
+                DoChildAgentDelete(request, responsedata, agentID, action, regionID);
+                return responsedata;
+            }
             else
             {
                 m_log.InfoFormat("[AGENT HANDLER]: method {0} not supported in agent message", method);
@@ -320,6 +325,24 @@ namespace OpenSim.Server.Handlers.Simulation
             }
         }
 
+        protected void DoChildAgentDelete(Hashtable request, Hashtable responsedata, UUID id, string action, UUID regionID)
+        {
+            m_log.Debug(" >>> DoChildAgentDelete action:" + action + "; RegionID:" + regionID);
+
+            GridRegion destination = new GridRegion();
+            destination.RegionID = regionID;
+
+            if (action.Equals("release"))
+                ReleaseAgent(regionID, id);
+            else
+                m_SimulationService.CloseChildAgent(destination, id);
+
+            responsedata["int_response_code"] = HttpStatusCode.OK;
+            responsedata["str_response_string"] = "OpenSim agent " + id.ToString();
+
+            m_log.Debug("[AGENT HANDLER]: Child Agent Released/Deleted.");
+        }
+
         protected void DoAgentDelete(Hashtable request, Hashtable responsedata, UUID id, string action, UUID regionID)
         {
             m_log.Debug(" >>> DoDelete action:" + action + "; RegionID:" + regionID);

OpenSim/Services/Connectors/Simulation/SimulationServiceConnector.cs

@@ -442,7 +442,7 @@ namespace OpenSim.Services.Connectors.Simulation
             return true;
         }
 
-        public bool CloseAgent(GridRegion destination, UUID id)
+        private bool CloseAgent(GridRegion destination, UUID id, bool ChildOnly)
         {
             string uri = string.Empty;
             try
@@ -459,6 +459,8 @@ namespace OpenSim.Services.Connectors.Simulation
 
             WebRequest request = WebRequest.Create(uri);
             request.Method = "DELETE";
+            if (ChildOnly)
+                request.Method += "CHILD";
             request.Timeout = 10000;
 
             StreamReader sr = null;
@@ -491,6 +493,16 @@ namespace OpenSim.Services.Connectors.Simulation
             return true;
         }
 
+        public bool CloseChildAgent(GridRegion destination, UUID id)
+        {
+            return CloseAgent(destination, id, true);
+        }
+
+        public bool CloseAgent(GridRegion destination, UUID id)
+        {
+            return CloseAgent(destination, id, false);
+        }
+
         #endregion Agents
 
         #region Objects

OpenSim/Services/Interfaces/ISimulationService.cs

@@ -70,6 +70,14 @@ namespace OpenSim.Services.Interfaces
         /// <returns></returns>
         bool ReleaseAgent(UUID originRegion, UUID id, string uri);
 
+        /// <summary>
+        /// Close child agent.
+        /// </summary>
+        /// <param name="regionHandle"></param>
+        /// <param name="id"></param>
+        /// <returns></returns>
+        bool CloseChildAgent(GridRegion destination, UUID id);
+
         /// <summary>
         /// Close agent.
         /// </summary>