When teleporting using Hypergrid, show more informative error messages in case of error

OpenSim/Region/CoreModules/Avatar/Lure/HGLureModule.cs

@@ -239,16 +239,27 @@ namespace OpenSim.Region.CoreModules.Avatar.Lure
                         GatekeeperServiceConnector gConn = new GatekeeperServiceConnector();
                         GridRegion gatekeeper = new GridRegion();
                         gatekeeper.ServerURI = url;
-                        GridRegion finalDestination = gConn.GetHyperlinkRegion(gatekeeper, new UUID(im.RegionID));
+                        string message;
+                        GridRegion finalDestination = gConn.GetHyperlinkRegion(gatekeeper, new UUID(im.RegionID), out message);
                         if (finalDestination != null)
                         {
                             ScenePresence sp = scene.GetScenePresence(client.AgentId);
                             IEntityTransferModule transferMod = scene.RequestModuleInterface<IEntityTransferModule>();
 
                             if (transferMod != null && sp != null)
+                            {
+                                if (message != null)
+                                    sp.ControllingClient.SendAgentAlertMessage(message, true);
+
                                 transferMod.DoTeleport(
                                     sp, gatekeeper, finalDestination, im.Position + new Vector3(0.5f, 0.5f, 0f),
                                     Vector3.UnitX, teleportflags);
+                            }
+                        }
+                        else
+                        {
+                            m_log.InfoFormat("[HG LURE MODULE]: Lure failed: {0}", message);
+                            client.SendAgentAlertMessage(message, true);
                         }
                     }
                 }

OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs

@@ -529,14 +529,15 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
 
             if (reg != null)
             {
-                finalDestination = GetFinalDestination(reg);
+                string message;
+                finalDestination = GetFinalDestination(reg, out message);
 
                 if (finalDestination == null)
                 {
-                    m_log.WarnFormat( "{0} Final destination is having problems. Unable to teleport {1} {2}",
+                    m_log.WarnFormat( "{0} Final destination is having problems. Unable to teleport {1} {2}: {3}",
-                                            LogHeader, sp.Name, sp.UUID);
+                                            LogHeader, sp.Name, sp.UUID, message);
 
-                    sp.ControllingClient.SendTeleportFailed("Problem at destination");
+                    sp.ControllingClient.SendTeleportFailed(message);
                     return;
                 }
 
@@ -557,6 +558,9 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     return;
                 }
 
+                if (message != null)
+                    sp.ControllingClient.SendAgentAlertMessage(message, true);
+
                 //
                 // This is it
                 //
@@ -1327,8 +1331,9 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             scene.SendKillObject(new List<uint> { localID });
         }
 
-        protected virtual GridRegion GetFinalDestination(GridRegion region)
+        protected virtual GridRegion GetFinalDestination(GridRegion region, out string message)
         {
+            message = null;
             return region;
         }
 

OpenSim/Region/CoreModules/Framework/EntityTransfer/HGEntityTransferModule.cs

@@ -225,19 +225,20 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
 
         #region HG overrides of IEntiryTransferModule
 
-        protected override GridRegion GetFinalDestination(GridRegion region)
+        protected override GridRegion GetFinalDestination(GridRegion region, out string message)
         {
             int flags = Scene.GridService.GetRegionFlags(Scene.RegionInfo.ScopeID, region.RegionID);
             m_log.DebugFormat("[HG ENTITY TRANSFER MODULE]: region {0} flags: {1}", region.RegionName, flags);
+            message = null;
 
             if ((flags & (int)OpenSim.Framework.RegionFlags.Hyperlink) != 0)
             {
                 m_log.DebugFormat("[HG ENTITY TRANSFER MODULE]: Destination region is hyperlink");
-                GridRegion real_destination = m_GatekeeperConnector.GetHyperlinkRegion(region, region.RegionID);
+                GridRegion real_destination = m_GatekeeperConnector.GetHyperlinkRegion(region, region.RegionID, out message);
                 if (real_destination != null)
-                    m_log.DebugFormat("[HG ENTITY TRANSFER MODULE]: GetFinalDestination serveruri -> {0}", real_destination.ServerURI);
+                    m_log.DebugFormat("[HG ENTITY TRANSFER MODULE]: GetFinalDestination: ServerURI={0}", real_destination.ServerURI);
                 else
-                    m_log.WarnFormat("[HG ENTITY TRANSFER MODULE]: GetHyperlinkRegion to Gatekeeper {0} failed", region.ServerURI);
+                    m_log.WarnFormat("[HG ENTITY TRANSFER MODULE]: GetHyperlinkRegion of region {0} from Gatekeeper {1} failed: {2}", region.RegionID, region.ServerURI, message);
                 return real_destination;
             }
 
@@ -533,7 +534,8 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                 GatekeeperServiceConnector gConn = new GatekeeperServiceConnector();
                 GridRegion gatekeeper = new GridRegion();
                 gatekeeper.ServerURI = lm.Gatekeeper;
-                GridRegion finalDestination = gConn.GetHyperlinkRegion(gatekeeper, new UUID(lm.RegionID));
+                string message;
+                GridRegion finalDestination = gConn.GetHyperlinkRegion(gatekeeper, new UUID(lm.RegionID), out message);
 
                 if (finalDestination != null)
                 {
@@ -541,9 +543,19 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     IEntityTransferModule transferMod = scene.RequestModuleInterface<IEntityTransferModule>();
 
                     if (transferMod != null && sp != null)
+                    {
+                        if (message != null)
+                            sp.ControllingClient.SendAgentAlertMessage(message, true);
+
                         transferMod.DoTeleport(
                             sp, gatekeeper, finalDestination, lm.Position, Vector3.UnitX,
                             (uint)(Constants.TeleportFlags.SetLastToTarget | Constants.TeleportFlags.ViaLandmark));
+                    }
+                }
+                else
+                {
+                    remoteClient.SendTeleportFailed(message);
+                    return;
                 }
 
             }

OpenSim/Server/Handlers/Hypergrid/HypergridHandlers.cs

@@ -94,11 +94,14 @@ namespace OpenSim.Server.Handlers.Hypergrid
             UUID regionID = UUID.Zero;
             UUID.TryParse(regionID_str, out regionID);
 
-            GridRegion regInfo = m_GatekeeperService.GetHyperlinkRegion(regionID);
+            string message;
+            GridRegion regInfo = m_GatekeeperService.GetHyperlinkRegion(regionID, out message);
 
             Hashtable hash = new Hashtable();
             if (regInfo == null)
+            {
                 hash["result"] = "false";
+            }
             else
             {
                 hash["result"] = "true";
@@ -112,6 +115,10 @@ namespace OpenSim.Server.Handlers.Hypergrid
                 hash["http_port"] = regInfo.HttpPort.ToString();
                 hash["internal_port"] = regInfo.InternalEndPoint.Port.ToString();
             }
+
+            if (message != null)
+                hash["message"] = message;
+
             XmlRpcResponse response = new XmlRpcResponse();
             response.Value = hash;
             return response;

OpenSim/Services/Connectors/Hypergrid/GatekeeperServiceConnector.cs

@@ -202,7 +202,7 @@ namespace OpenSim.Services.Connectors.Hypergrid
             return mapTile;
         }
 
-        public GridRegion GetHyperlinkRegion(GridRegion gatekeeper, UUID regionID)
+        public GridRegion GetHyperlinkRegion(GridRegion gatekeeper, UUID regionID, out string message)
         {
             Hashtable hash = new Hashtable();
             hash["region_uuid"] = regionID.ToString();
@@ -219,12 +219,14 @@ namespace OpenSim.Services.Connectors.Hypergrid
             }
             catch (Exception e)
             {
+                message = "Error contacting grid.";
                 m_log.Debug("[GATEKEEPER SERVICE CONNECTOR]: Exception " + e.Message);
                 return null;
             }
 
             if (response.IsFault)
             {
+                message = "Error contacting grid.";
                 m_log.ErrorFormat("[GATEKEEPER SERVICE CONNECTOR]: remote call returned an error: {0}", response.FaultString);
                 return null;
             }
@@ -236,6 +238,14 @@ namespace OpenSim.Services.Connectors.Hypergrid
             {
                 bool success = false;
                 Boolean.TryParse((string)hash["result"], out success);
+
+                if (hash["message"] != null)
+                    message = (string)hash["message"];
+                else if (success)
+                    message = null;
+                else
+                    message = "The teleport destination could not be found.";   // probably the dest grid is old and doesn't send 'message', but the most common problem is that the region is unavailable
+
                 if (success)
                 {
                     GridRegion region = new GridRegion();
@@ -305,6 +315,7 @@ namespace OpenSim.Services.Connectors.Hypergrid
             }
             catch (Exception e)
             {
+                message = "Error parsing response from grid.";
                 m_log.Error("[GATEKEEPER SERVICE CONNECTOR]: Got exception while parsing hyperlink response " + e.StackTrace);
                 return null;
             }

OpenSim/Services/HypergridService/GatekeeperService.cs

@@ -204,15 +204,26 @@ namespace OpenSim.Services.HypergridService
             return true;
         }
 
-        public GridRegion GetHyperlinkRegion(UUID regionID)
+        public GridRegion GetHyperlinkRegion(UUID regionID, out string message)
         {
             m_log.DebugFormat("[GATEKEEPER SERVICE]: Request to get hyperlink region {0}", regionID);
+            message = null;
 
             if (!m_AllowTeleportsToAnyRegion)
+            {
                 // Don't even check the given regionID
+                message = "Teleporting to the default region.";
                 return m_DefaultGatewayRegion;
+            }
 
             GridRegion region = m_GridService.GetRegionByUUID(m_ScopeID, regionID);
+
+            if (region == null)
+            {
+                message = "The teleport destination could not be found.";
+                return null;
+            }
+
             return region;
         }
 

OpenSim/Services/Interfaces/IHypergridServices.cs

@@ -37,7 +37,7 @@ namespace OpenSim.Services.Interfaces
     public interface IGatekeeperService
     {
         bool LinkRegion(string regionDescriptor, out UUID regionID, out ulong regionHandle, out string externalName, out string imageURL, out string reason);
-        GridRegion GetHyperlinkRegion(UUID regionID);
+        GridRegion GetHyperlinkRegion(UUID regionID, out string message);
 
         bool LoginAgent(AgentCircuitData aCircuit, GridRegion destination, out string reason);
 

OpenSim/Services/LLLoginService/LLLoginService.cs

@@ -750,9 +750,10 @@ namespace OpenSim.Services.LLLoginService
             UUID regionID;
             ulong handle;
             string imageURL = string.Empty, reason = string.Empty;
+            string message;
             if (m_GatekeeperConnector.LinkRegion(gatekeeper, out regionID, out handle, out domainName, out imageURL, out reason))
             {
-                GridRegion destination = m_GatekeeperConnector.GetHyperlinkRegion(gatekeeper, regionID);
+                GridRegion destination = m_GatekeeperConnector.GetHyperlinkRegion(gatekeeper, regionID, out message);
                 return destination;
             }