add some checks for valid endpoints

2 files changed, 33 insertions, 59 deletions

diff --git a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
index 4b846f5..ca20604 100644
--- a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
@@ -527,15 +527,15 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             {
                 string homeURI = Scene.GetAgentHomeURI(sp.ControllingClient.AgentId);
 
-                string message;
-                finalDestination = GetFinalDestination(reg, sp.ControllingClient.AgentId, homeURI, out message);
+                string reason = String.Empty;
+                finalDestination = GetFinalDestination(reg, sp.ControllingClient.AgentId, homeURI, out reason);
 
                 if (finalDestination == null)
                 {
                     m_log.WarnFormat( "{0} Final destination is having problems. Unable to teleport {1} {2}: {3}",
-                                            LogHeader, sp.Name, sp.UUID, message);
+                                            LogHeader, sp.Name, sp.UUID, reason);
 
-                    sp.ControllingClient.SendTeleportFailed(message);
+                    sp.ControllingClient.SendTeleportFailed(reason);
                     return;
                 }
 
@@ -548,17 +548,12 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     return;
                 }
 
-                // Validate assorted conditions
-                string reason = string.Empty;
                 if (!ValidateGenericConditions(sp, reg, finalDestination, teleportFlags, out reason))
                 {
                     sp.ControllingClient.SendTeleportFailed(reason);
                     return;
                 }
 
-                if (message != null)
-                    sp.ControllingClient.SendAgentAlertMessage(message, true);
-
                 //
                 // This is it
                 //
@@ -735,8 +730,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             IPEndPoint endPoint = finalDestination.ExternalEndPoint;
             if (endPoint == null || endPoint.Address == null)
             {
-                sp.ControllingClient.SendTeleportFailed("Remote Region appears to be down");
-
+                sp.ControllingClient.SendTeleportFailed("Could not resolve destination Address");
                 return;
             }
 
@@ -784,22 +778,12 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             // At least on LL 3.3.4, this is not strictly necessary - a teleport will succeed without sending this to
             // the viewer.  However, it might mean that the viewer does not see the black teleport screen (untested).
             sp.ControllingClient.SendTeleportStart(teleportFlags);
-
-            // the avatar.Close below will clear the child region list. We need this below for (possibly)
-            // closing the child agents, so save it here (we need a copy as it is Clear()-ed).
-            //List<ulong> childRegions = avatar.KnownRegionHandles;
-            // Compared to ScenePresence.CrossToNewRegion(), there's no obvious code to handle a teleport
-            // failure at this point (unlike a border crossing failure).  So perhaps this can never fail
-            // once we reach here...
-            //avatar.Scene.RemoveCapsHandler(avatar.UUID);
-
+  
             AgentCircuitData currentAgentCircuit = sp.Scene.AuthenticateHandler.GetAgentCircuitData(sp.ControllingClient.CircuitCode);
             AgentCircuitData agentCircuit = sp.ControllingClient.RequestClientInfo();
             agentCircuit.startpos = position;
             agentCircuit.child = true;
 
-//            agentCircuit.Appearance = sp.Appearance;
-//            agentCircuit.Appearance = new AvatarAppearance(sp.Appearance, true, false);
             agentCircuit.Appearance = new AvatarAppearance();
             agentCircuit.Appearance.AvatarHeight = sp.Appearance.AvatarHeight;
 
@@ -1673,6 +1657,13 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     return agent;
                 }
 
+                IPEndPoint endpoint = neighbourRegion.ExternalEndPoint;
+                if(endpoint == null)
+                {
+                    m_log.DebugFormat("{0}: CrossAgentToNewRegionAsync: failed to resolve neighbour address {0} ",neighbourRegion.ExternalHostName);
+                    return agent;
+                }
+
                 m_entityTransferStateMachine.SetInTransit(agent.UUID);
                 agent.RemoveFromPhysicalScene();
 
@@ -1683,7 +1674,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     return agent;
                 }
 
-                CrossAgentToNewRegionPost(agent, pos, neighbourRegion, isFlying, ctx);
+                CrossAgentToNewRegionPost(agent, pos, neighbourRegion, endpoint, isFlying, ctx);
             }
             catch (Exception e)
             {
@@ -1727,6 +1718,11 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             agent.AddNeighbourRegion(neighbourRegion, agentCircuit.CapsPath);
 
             IPEndPoint endPoint = neighbourRegion.ExternalEndPoint;
+            if(endPoint == null)
+            {
+                m_log.DebugFormat("CrossAgentCreateFarChild failed to resolve neighbour address {0}", neighbourRegion.ExternalHostName);
+                return false;
+            }
             if (Scene.SimulationService.CreateAgent(source, neighbourRegion, agentCircuit, (int)TeleportFlags.Default, ctx, out reason))
             {
                 string capsPath = neighbourRegion.ServerURI + CapsUtil.GetCapsSeedPath(agentCircuit.CapsPath);
@@ -1821,7 +1817,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
         }
 
         public void CrossAgentToNewRegionPost(ScenePresence agent, Vector3 pos, GridRegion neighbourRegion,
-            bool isFlying, EntityTransferContext ctx)
+            IPEndPoint endpoint, bool isFlying, EntityTransferContext ctx)
         {
 
             string agentcaps;
@@ -1848,15 +1844,14 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             {
                 m_eqModule.CrossRegion(
                     neighbourRegion.RegionHandle, pos, vel2 /* agent.Velocity */,
-                    neighbourRegion.ExternalEndPoint,
-                    capsPath, agent.UUID, agent.ControllingClient.SessionId,
+                    endpoint, capsPath, agent.UUID, agent.ControllingClient.SessionId,
                     neighbourRegion.RegionSizeX, neighbourRegion.RegionSizeY);
             }
             else
             {
                 m_log.ErrorFormat("{0} Using old CrossRegion packet. Varregion will not work!!", LogHeader);
-                agent.ControllingClient.CrossRegion(neighbourRegion.RegionHandle, pos, agent.Velocity, neighbourRegion.ExternalEndPoint,
-                                            capsPath);
+                agent.ControllingClient.CrossRegion(neighbourRegion.RegionHandle, pos, agent.Velocity,
+                        endpoint,capsPath);
             }
 
             // SUCCESS!
@@ -1953,7 +1948,6 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
 
             seeds.Add(regionhandler, agent.CapsPath);
 
-
 //            agent.ChildrenCapSeeds = new Dictionary<ulong, string>(seeds);
             agent.ChildrenCapSeeds = null;
 
diff --git a/OpenSim/Services/Interfaces/IGridService.cs b/OpenSim/Services/Interfaces/IGridService.cs
index 66e5870..8068ff5 100644
--- a/OpenSim/Services/Interfaces/IGridService.cs
+++ b/OpenSim/Services/Interfaces/IGridService.cs
@@ -271,31 +271,6 @@ namespace OpenSim.Services.Interfaces
             m_serverURI = string.Empty;
         }
 
-        /*
-        public GridRegion(int regionLocX, int regionLocY, IPEndPoint internalEndPoint, string externalUri)
-        {
-            m_regionLocX = regionLocX;
-            m_regionLocY = regionLocY;
-            RegionSizeX = (int)Constants.RegionSize;
-            RegionSizeY = (int)Constants.RegionSize;
-
-            m_internalEndPoint = internalEndPoint;
-            m_externalHostName = externalUri;
-        }
-
-        public GridRegion(int regionLocX, int regionLocY, string externalUri, uint port)
-        {
-            m_regionLocX = regionLocX;
-            m_regionLocY = regionLocY;
-            RegionSizeX = (int)Constants.RegionSize;
-            RegionSizeY = (int)Constants.RegionSize;
-
-            m_externalHostName = externalUri;
-
-            m_internalEndPoint = new IPEndPoint(IPAddress.Parse("0.0.0.0"), (int)port);
-        }
-         */
-
         public GridRegion(uint xcell, uint ycell)
         {
             m_regionLocX = (int)Util.RegionToWorldLoc(xcell);
@@ -489,14 +464,16 @@ namespace OpenSim.Services.Interfaces
         {
             get
             {
-                // Old one defaults to IPv6
-                //return new IPEndPoint(Dns.GetHostAddresses(m_externalHostName)[0], m_internalEndPoint.Port);
-
                 IPAddress ia = null;
                 // If it is already an IP, don't resolve it - just return directly
+                // we should not need this
                 if (IPAddress.TryParse(m_externalHostName, out ia))
+                {
+                    if (ia.Equals(IPAddress.Any) || ia.Equals(IPAddress.IPv6Any))
+                        return null;
                     return new IPEndPoint(ia, m_internalEndPoint.Port);
-
+                }
+                    
                 // Reset for next check
                 ia = null;
                 try
@@ -513,7 +490,7 @@ namespace OpenSim.Services.Interfaces
                         }
                     }
                 }
-                catch (SocketException e)
+                catch // (SocketException e)
                 {
                     /*throw new Exception(
                         "Unable to resolve local hostname " + m_externalHostName + " innerException of type '" +
@@ -524,6 +501,9 @@ namespace OpenSim.Services.Interfaces
                     return null;
                 }
 
+                if(ia == null)
+                    return null;
+
                 return new IPEndPoint(ia, m_internalEndPoint.Port);
             }
         }