This fixes the crash reported in http://opensimulator.org/mantis/view.php?id=5529 related to sending IMs to foreign friends who are offline. Hopefully.

OpenSim/Region/CoreModules/Avatar/InstantMessage/HGMessageTransferModule.cs

@@ -196,10 +196,9 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
 
             Util.FireAndForget(delegate
             {
-                bool success = m_IMService.OutgoingInstantMessage(im, url, foreigner);
+                bool success = false;
-                if (!success && account == null)
+                if (foreigner && url == string.Empty) // we don't know about this user
                 {
-                    // One last chance
                     string recipientUUI = TryGetRecipientUUI(new UUID(im.fromAgentID), toAgentID);
                     m_log.DebugFormat("[HG MESSAGE TRANSFER]: Got UUI {0}", recipientUUI);
                     if (recipientUUI != string.Empty)
@@ -213,6 +212,9 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
                         }
                     }
                 }
+                else
+                    success = m_IMService.OutgoingInstantMessage(im, url, foreigner);
+
                 if (!success && !foreigner)
                     HandleUndeliveredMessage(im, result);
                 else

OpenSim/Server/Handlers/Hypergrid/UserAgentServerConnector.cs

@@ -268,18 +268,18 @@ namespace OpenSim.Server.Handlers.Hypergrid
                         ids.Add(requestData[key].ToString());
                 }
 
-                List<UUID> online = m_HomeUsersService.GetOnlineFriends(userID, ids);
+                //List<UUID> online = m_HomeUsersService.GetOnlineFriends(userID, ids);
-                if (online.Count > 0)
+                //if (online.Count > 0)
-                {
+                //{
-                    int i = 0;
+                //    int i = 0;
-                    foreach (UUID id in online)
+                //    foreach (UUID id in online)
-                    {
+                //    {
-                        hash["friend_" + i.ToString()] = id.ToString();
+                //        hash["friend_" + i.ToString()] = id.ToString();
-                        i++;
+                //        i++;
-                    }
+                //    }
-                }
+                //}
-                else
+                //else
-                    hash["result"] = "No Friends Online";
+                //    hash["result"] = "No Friends Online";
             }
 
             XmlRpcResponse response = new XmlRpcResponse();

OpenSim/Services/HypergridService/HGInstantMessageService.cs

@@ -185,7 +185,6 @@ namespace OpenSim.Services.HypergridService
                     {
                         lookupAgent = true;
                         upd = null;
-                        url = string.Empty;
                     }
                 }
                 else
@@ -221,8 +220,6 @@ namespace OpenSim.Services.HypergridService
                     url = m_UserAgentService.LocateUser(toAgentID);
                 }
 
-                if (upd != null || url != string.Empty)
-                {
                 // check if we've tried this before..
                 // This is one way to end the recursive loop
                 //
@@ -235,7 +232,6 @@ namespace OpenSim.Services.HypergridService
                     return false;
                 }
             }
-            }
 
             if (upd != null)
             {
@@ -332,10 +328,6 @@ namespace OpenSim.Services.HypergridService
             else
             {
                 // try again, but lookup user this time.
-                // Warning, this must call the Async version
-                // of this method or we'll be making thousands of threads
-                // The version within the spawned thread is SendGridInstantMessageViaXMLRPCAsync
-                // The version that spawns the thread is SendGridInstantMessageViaXMLRPC
 
                 // This is recursive!!!!!
                 return TrySendInstantMessage(im, url, false, foreigner);
@@ -348,13 +340,17 @@ namespace OpenSim.Services.HypergridService
             if (m_RestURL != string.Empty && (im.offline != 0)
                 && (!im.fromGroup || (im.fromGroup && m_ForwardOfflineGroupMessages)))
             {
+                m_log.DebugFormat("[HG IM SERVICE]: Message saved");
                 return SynchronousRestObjectPoster.BeginPostObject<GridInstantMessage, bool>(
                          "POST", m_RestURL + "/SaveMessage/", im);
 
             }
 
             else
+            {
+                m_log.DebugFormat("[HG IM SERVICE]: No offline IM service, message not saved");
                 return false;
             }
         }
+    }
 }

OpenSim/Services/HypergridService/UserAgentService.cs

@@ -482,7 +482,7 @@ namespace OpenSim.Services.HypergridService
         {
             foreach (TravelingAgentInfo t in m_TravelingAgents.Values)
             {
-                if (t.UserID == userID)
+                if (t.UserID == userID && !m_GridName.Equals(t.GridExternalName))
                     return t.GridExternalName;
             }
 

OpenSim/Services/Interfaces/IHypergridServices.cs

@@ -62,7 +62,7 @@ namespace OpenSim.Services.Interfaces
         string GetUUI(UUID userID, UUID targetUserID);
 
         void StatusNotification(List<string> friends, UUID userID, bool online);
-        List<UUID> GetOnlineFriends(UUID userID, List<string> friends);
+        //List<UUID> GetOnlineFriends(UUID userID, List<string> friends);
 
         bool AgentIsComingHome(UUID sessionID, string thisGridExternalName);
         bool VerifyAgent(UUID sessionID, string token);

bin/config-include/StandaloneHypergrid.ini

@@ -160,6 +160,7 @@
 	GridService = "OpenSim.Services.GridService.dll:GridService"
 	PresenceService	= "OpenSim.Services.PresenceService.dll:PresenceService"
 	UserAgentService = "OpenSim.Services.HypergridService.dll:UserAgentService"
+	InGatekeeper = True
 
 
 ;; This should always be the very last thing on this file