14 files changed, 474 insertions, 136 deletions

diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index fa79ea7..1d080ff 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -134,6 +134,7 @@ what it is today.
 * Micheil Merlin
 * Mike Osias (IBM)
 * Mike Pitman (IBM)
+* mikemig
 * mikkopa/_someone - RealXtend
 * Misterblue
 * Mircea Kitsune
diff --git a/OpenSim/Framework/Console/LocalConsole.cs b/OpenSim/Framework/Console/LocalConsole.cs
index a967db6..260a86f 100644
--- a/OpenSim/Framework/Console/LocalConsole.cs
+++ b/OpenSim/Framework/Console/LocalConsole.cs
@@ -46,6 +46,11 @@ namespace OpenSim.Framework.Console
         // private readonly object m_syncRoot = new object();
         private const string LOGLEVEL_NONE = "(none)";
 
+        // Used to extract categories for colourization.
+        private Regex m_categoryRegex 
+            = new Regex(
+                @"^(?<Front>.*?)\[(?<Category>[^\]]+)\]:?(?<End>.*)", RegexOptions.Singleline | RegexOptions.Compiled);
+
         private int m_cursorYPosition = -1;
         private int m_cursorXPosition = 0;
         private StringBuilder m_commandLine = new StringBuilder();
@@ -280,11 +285,8 @@ namespace OpenSim.Framework.Console
             string outText = text;
 
             if (level != LOGLEVEL_NONE)
-            {
-                string regex = @"^(?<Front>.*?)\[(?<Category>[^\]]+)\]:?(?<End>.*)";
-
-                Regex RE = new Regex(regex, RegexOptions.Multiline);
-                MatchCollection matches = RE.Matches(text);
+            {               
+                MatchCollection matches = m_categoryRegex.Matches(text);
 
                 if (matches.Count == 1)
                 {
diff --git a/OpenSim/Region/CoreModules/Avatar/Chat/Tests/ChatModuleTests.cs b/OpenSim/Region/CoreModules/Avatar/Chat/Tests/ChatModuleTests.cs
new file mode 100644
index 0000000..7b8c418
--- /dev/null
+++ b/OpenSim/Region/CoreModules/Avatar/Chat/Tests/ChatModuleTests.cs
@@ -0,0 +1,286 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using log4net.Config;
+using Nini.Config;
+using NUnit.Framework;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Framework.Servers;
+using OpenSim.Framework.Servers.HttpServer;
+using OpenSim.Region.CoreModules.Avatar.Chat;
+using OpenSim.Region.CoreModules.Framework;
+using OpenSim.Region.CoreModules.Framework.EntityTransfer;
+using OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Services.Interfaces;
+using OpenSim.Tests.Common;
+using OpenSim.Tests.Common.Mock;
+
+namespace OpenSim.Region.CoreModules.Avatar.Chat.Tests
+{
+    [TestFixture]
+    public class ChatModuleTests : OpenSimTestCase
+    {  
+        [TestFixtureSetUp]
+        public void FixtureInit()
+        {
+            // Don't allow tests to be bamboozled by asynchronous events.  Execute everything on the same thread.
+            // We must do this here so that child agent positions are updated in a predictable manner.
+            Util.FireAndForgetMethod = FireAndForgetMethod.RegressionTest;
+        }
+
+        [TestFixtureTearDown]
+        public void TearDown()
+        {
+            // We must set this back afterwards, otherwise later tests will fail since they're expecting multiple
+            // threads.  Possibly, later tests should be rewritten so none of them require async stuff (which regression
+            // tests really shouldn't).
+            Util.FireAndForgetMethod = Util.DefaultFireAndForgetMethod;
+        }
+
+        private void SetupNeighbourRegions(TestScene sceneA, TestScene sceneB)
+        {            
+            // XXX: HTTP server is not (and should not be) necessary for this test, though it's absence makes the 
+            // CapabilitiesModule complain when it can't set up HTTP endpoints.
+            //            BaseHttpServer httpServer = new BaseHttpServer(99999);
+            //            MainServer.AddHttpServer(httpServer);
+            //            MainServer.Instance = httpServer;
+
+            // We need entity transfer modules so that when sp2 logs into the east region, the region calls 
+            // EntityTransferModuleto set up a child agent on the west region.
+            // XXX: However, this is not an entity transfer so is misleading.
+            EntityTransferModule etmA = new EntityTransferModule();
+            EntityTransferModule etmB = new EntityTransferModule();
+            LocalSimulationConnectorModule lscm = new LocalSimulationConnectorModule();
+
+            IConfigSource config = new IniConfigSource();
+            config.AddConfig("Chat");
+            IConfig modulesConfig = config.AddConfig("Modules");
+            modulesConfig.Set("EntityTransferModule", etmA.Name);
+            modulesConfig.Set("SimulationServices", lscm.Name);
+
+            SceneHelpers.SetupSceneModules(new Scene[] { sceneA, sceneB }, config, lscm);
+            SceneHelpers.SetupSceneModules(sceneA, config, new CapabilitiesModule(), etmA, new ChatModule());           
+            SceneHelpers.SetupSceneModules(sceneB, config, new CapabilitiesModule(), etmB, new ChatModule());
+        }
+
+        /// <summary>
+        /// Tests chat between neighbour regions on the east-west axis
+        /// </summary>
+        /// <remarks>
+        /// Really, this is a combination of a child agent position update test and a chat range test.  These need
+        /// to be separated later on.
+        /// </remarks>
+        [Test]
+        public void TestInterRegionChatDistanceEastWest()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            UUID sp1Uuid = TestHelpers.ParseTail(0x11);
+            UUID sp2Uuid = TestHelpers.ParseTail(0x12);
+
+            Vector3 sp1Position = new Vector3(6, 128, 20);
+            Vector3 sp2Position = new Vector3(250, 128, 20);
+
+            SceneHelpers sh = new SceneHelpers();
+            TestScene sceneWest = sh.SetupScene("sceneWest", TestHelpers.ParseTail(0x1), 1000, 1000);            
+            TestScene sceneEast = sh.SetupScene("sceneEast", TestHelpers.ParseTail(0x2), 1001, 1000);            
+
+            SetupNeighbourRegions(sceneWest, sceneEast);
+
+            ScenePresence sp1 = SceneHelpers.AddScenePresence(sceneEast, sp1Uuid);
+            TestClient sp1Client = (TestClient)sp1.ControllingClient;
+
+            // If we don't set agents to flying, test will go wrong as they instantly fall to z = 0.
+            // TODO: May need to create special complete no-op test physics module rather than basic physics, since
+            // physics is irrelevant to this test.
+            sp1.Flying = true;
+
+            // When sp1 logs in to sceneEast, it sets up a child agent in sceneWest and informs the sp2 client to 
+            // make the connection.  For this test, will simplify this chain by making the connection directly.
+            ScenePresence sp1Child = SceneHelpers.AddChildScenePresence(sceneWest, sp1Uuid);
+            TestClient sp1ChildClient = (TestClient)sp1Child.ControllingClient;
+
+            sp1.AbsolutePosition = sp1Position;                
+
+            ScenePresence sp2 = SceneHelpers.AddScenePresence(sceneWest, sp2Uuid);
+            TestClient sp2Client = (TestClient)sp2.ControllingClient;
+            sp2.Flying = true;
+
+            ScenePresence sp2Child = SceneHelpers.AddChildScenePresence(sceneEast, sp2Uuid);
+            TestClient sp2ChildClient = (TestClient)sp2Child.ControllingClient;
+
+            sp2.AbsolutePosition = sp2Position;           
+
+            // We must update the scenes in order to make the root new root agents trigger position updates in their
+            // children.
+            sceneWest.Update(1);
+            sceneEast.Update(1);
+
+            // Check child positions are correct.
+            Assert.AreEqual(
+                new Vector3(sp1Position.X + sceneEast.RegionInfo.RegionSizeX, sp1Position.Y, sp1Position.Z), 
+                sp1ChildClient.SceneAgent.AbsolutePosition);
+
+            Assert.AreEqual(
+                new Vector3(sp2Position.X - sceneWest.RegionInfo.RegionSizeX, sp2Position.Y, sp2Position.Z), 
+                sp2ChildClient.SceneAgent.AbsolutePosition);
+
+            string receivedSp1ChatMessage = "";
+            string receivedSp2ChatMessage = "";
+
+            sp1ChildClient.OnReceivedChatMessage 
+                += (message, type, fromPos, fromName, fromAgentID, ownerID, source, audible) => receivedSp1ChatMessage = message;
+            sp2ChildClient.OnReceivedChatMessage 
+                += (message, type, fromPos, fromName, fromAgentID, ownerID, source, audible) => receivedSp2ChatMessage = message;
+
+            TestUserInRange(sp1Client, "ello darling", ref receivedSp2ChatMessage);
+            TestUserInRange(sp2Client, "fantastic cats", ref receivedSp1ChatMessage);
+
+            sp1Position = new Vector3(30, 128, 20);
+            sp1.AbsolutePosition = sp1Position;
+            sceneEast.Update(1);
+
+            // Check child position is correct.
+            Assert.AreEqual(
+                new Vector3(sp1Position.X + sceneEast.RegionInfo.RegionSizeX, sp1Position.Y, sp1Position.Z), 
+                sp1ChildClient.SceneAgent.AbsolutePosition);
+
+            TestUserOutOfRange(sp1Client, "beef", ref receivedSp2ChatMessage);
+            TestUserOutOfRange(sp2Client, "lentils", ref receivedSp1ChatMessage);
+        }
+
+        /// <summary>
+        /// Tests chat between neighbour regions on the north-south axis
+        /// </summary>
+        /// <remarks>
+        /// Really, this is a combination of a child agent position update test and a chat range test.  These need
+        /// to be separated later on.
+        /// </remarks>
+        [Test]
+        public void TestInterRegionChatDistanceNorthSouth()
+        {
+            TestHelpers.InMethod();
+            //            TestHelpers.EnableLogging();
+
+            UUID sp1Uuid = TestHelpers.ParseTail(0x11);
+            UUID sp2Uuid = TestHelpers.ParseTail(0x12);
+
+            Vector3 sp1Position = new Vector3(128, 250, 20);
+            Vector3 sp2Position = new Vector3(128, 6, 20);
+
+            SceneHelpers sh = new SceneHelpers();
+            TestScene sceneNorth = sh.SetupScene("sceneNorth", TestHelpers.ParseTail(0x1), 1000, 1000);            
+            TestScene sceneSouth = sh.SetupScene("sceneSouth", TestHelpers.ParseTail(0x2), 1000, 1001);            
+
+            SetupNeighbourRegions(sceneNorth, sceneSouth);
+
+            ScenePresence sp1 = SceneHelpers.AddScenePresence(sceneNorth, sp1Uuid);
+            TestClient sp1Client = (TestClient)sp1.ControllingClient;
+
+            // If we don't set agents to flying, test will go wrong as they instantly fall to z = 0.
+            // TODO: May need to create special complete no-op test physics module rather than basic physics, since
+            // physics is irrelevant to this test.
+            sp1.Flying = true;
+
+            // When sp1 logs in to sceneEast, it sets up a child agent in sceneNorth and informs the sp2 client to 
+            // make the connection.  For this test, will simplify this chain by making the connection directly.
+            ScenePresence sp1Child = SceneHelpers.AddChildScenePresence(sceneSouth, sp1Uuid);
+            TestClient sp1ChildClient = (TestClient)sp1Child.ControllingClient;
+
+            sp1.AbsolutePosition = sp1Position;                
+
+            ScenePresence sp2 = SceneHelpers.AddScenePresence(sceneSouth, sp2Uuid);
+            TestClient sp2Client = (TestClient)sp2.ControllingClient;
+            sp2.Flying = true;
+
+            ScenePresence sp2Child = SceneHelpers.AddChildScenePresence(sceneNorth, sp2Uuid);
+            TestClient sp2ChildClient = (TestClient)sp2Child.ControllingClient;
+
+            sp2.AbsolutePosition = sp2Position;           
+
+            // We must update the scenes in order to make the root new root agents trigger position updates in their
+            // children.
+            sceneNorth.Update(1);
+            sceneSouth.Update(1);
+
+            // Check child positions are correct.
+            Assert.AreEqual(
+                new Vector3(sp1Position.X, sp1Position.Y - sceneNorth.RegionInfo.RegionSizeY, sp1Position.Z), 
+                sp1ChildClient.SceneAgent.AbsolutePosition);
+
+            Assert.AreEqual(
+                new Vector3(sp2Position.X, sp2Position.Y + sceneSouth.RegionInfo.RegionSizeY, sp2Position.Z), 
+                sp2ChildClient.SceneAgent.AbsolutePosition);
+
+            string receivedSp1ChatMessage = "";
+            string receivedSp2ChatMessage = "";
+
+            sp1ChildClient.OnReceivedChatMessage 
+                += (message, type, fromPos, fromName, fromAgentID, ownerID, source, audible) => receivedSp1ChatMessage = message;
+            sp2ChildClient.OnReceivedChatMessage 
+                += (message, type, fromPos, fromName, fromAgentID, ownerID, source, audible) => receivedSp2ChatMessage = message;
+
+            TestUserInRange(sp1Client, "ello darling", ref receivedSp2ChatMessage);
+            TestUserInRange(sp2Client, "fantastic cats", ref receivedSp1ChatMessage);
+
+            sp1Position = new Vector3(30, 128, 20);
+            sp1.AbsolutePosition = sp1Position;
+            sceneNorth.Update(1);
+
+            // Check child position is correct.
+            Assert.AreEqual(
+                new Vector3(sp1Position.X, sp1Position.Y - sceneNorth.RegionInfo.RegionSizeY, sp1Position.Z), 
+                sp1ChildClient.SceneAgent.AbsolutePosition);
+
+            TestUserOutOfRange(sp1Client, "beef", ref receivedSp2ChatMessage);
+            TestUserOutOfRange(sp2Client, "lentils", ref receivedSp1ChatMessage);
+        }
+    
+        private void TestUserInRange(TestClient speakClient, string testMessage, ref string receivedMessage)
+        {
+            receivedMessage = "";
+
+            speakClient.Chat(0, ChatTypeEnum.Say, testMessage);
+
+            Assert.AreEqual(testMessage, receivedMessage);
+        }
+
+        private void TestUserOutOfRange(TestClient speakClient, string testMessage, ref string receivedMessage)
+        {
+            receivedMessage = "";
+
+            speakClient.Chat(0, ChatTypeEnum.Say, testMessage);
+
+            Assert.AreNotEqual(testMessage, receivedMessage);
+        }
+    }
+}
\ No newline at end of file
diff --git a/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs b/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs
index 7aa7123..2462ff8 100644
--- a/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs
@@ -428,7 +428,7 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
         /// <summary>
         /// delegate for sending a grid instant message asynchronously
         /// </summary>
-        public delegate void GridInstantMessageDelegate(GridInstantMessage im, MessageResultNotification result, UUID prevRegionID);
+        public delegate void GridInstantMessageDelegate(GridInstantMessage im, MessageResultNotification result);
 
         protected virtual void GridInstantMessageCompleted(IAsyncResult iar)
         {
@@ -442,138 +442,87 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
         {
             GridInstantMessageDelegate d = SendGridInstantMessageViaXMLRPCAsync;
 
-            d.BeginInvoke(im, result, UUID.Zero, GridInstantMessageCompleted, d);
+            d.BeginInvoke(im, result, GridInstantMessageCompleted, d);
         }
 
         /// <summary>
-        /// Recursive SendGridInstantMessage over XMLRPC method.
-        /// This is called from within a dedicated thread.
-        /// The first time this is called, prevRegionHandle will be 0 Subsequent times this is called from 
-        /// itself, prevRegionHandle will be the last region handle that we tried to send.
-        /// If the handles are the same, we look up the user's location using the grid.
-        /// If the handles are still the same, we end.  The send failed.
+        /// Internal SendGridInstantMessage over XMLRPC method.
         /// </summary>
-        /// <param name="prevRegionHandle">
-        /// Pass in 0 the first time this method is called.  It will be called recursively with the last 
-        /// regionhandle tried
-        /// </param>
-        protected virtual void SendGridInstantMessageViaXMLRPCAsync(GridInstantMessage im, MessageResultNotification result, UUID prevRegionID)
+        /// <remarks>
+        /// This is called from within a dedicated thread.
+        /// </remarks>
+        private void SendGridInstantMessageViaXMLRPCAsync(GridInstantMessage im, MessageResultNotification result)
         {
             UUID toAgentID = new UUID(im.toAgentID);
-
-            PresenceInfo upd = null;
-
-            bool lookupAgent = false;
+            UUID regionID;
+            bool needToLookupAgent;
 
             lock (m_UserRegionMap)
+                needToLookupAgent = !m_UserRegionMap.TryGetValue(toAgentID, out regionID);
+
+            while (true)
             {
-                if (m_UserRegionMap.ContainsKey(toAgentID))
+                if (needToLookupAgent)
                 {
-                    upd = new PresenceInfo();
-                    upd.RegionID = m_UserRegionMap[toAgentID];
+                    PresenceInfo[] presences = PresenceService.GetAgents(new string[] { toAgentID.ToString() }); 
 
-                    // We need to compare the current regionhandle with the previous region handle
-                    // or the recursive loop will never end because it will never try to lookup the agent again
-                    if (prevRegionID == upd.RegionID)
-                    {
-                        lookupAgent = true;
-                    }
-                }
-                else
-                {
-                    lookupAgent = true;
-                }
-            }
-            
+                    UUID foundRegionID = UUID.Zero;
 
-            // Are we needing to look-up an agent?
-            if (lookupAgent)
-            {
-                // Non-cached user agent lookup.
-                PresenceInfo[] presences = PresenceService.GetAgents(new string[] { toAgentID.ToString() }); 
-                if (presences != null && presences.Length > 0)
-                {
-                    foreach (PresenceInfo p in presences)
+                    if (presences != null)
                     {
-                        if (p.RegionID != UUID.Zero)
+                        foreach (PresenceInfo p in presences)
                         {
-                            upd = p;
-                            break;
+                            if (p.RegionID != UUID.Zero)
+                            {
+                                foundRegionID = p.RegionID;
+                                break;
+                            }
                         }
                     }
-                }
 
-                if (upd != null)
-                {
-                    // check if we've tried this before..
-                    // This is one way to end the recursive loop
-                    //
-                    if (upd.RegionID == prevRegionID)
-                    {
-                        // m_log.Error("[GRID INSTANT MESSAGE]: Unable to deliver an instant message");
-                        HandleUndeliverableMessage(im, result);
-                        return;
-                    }
+                    // If not found or the found region is the same as the last lookup, then message is undeliverable
+                    if (foundRegionID == UUID.Zero || foundRegionID == regionID)
+                        break;
+                    else
+                        regionID = foundRegionID;
                 }
-                else
+
+                GridRegion reginfo = m_Scenes[0].GridService.GetRegionByUUID(m_Scenes[0].RegionInfo.ScopeID, regionID);
+                if (reginfo == null)
                 {
-                    // m_log.Error("[GRID INSTANT MESSAGE]: Unable to deliver an instant message");
-                    HandleUndeliverableMessage(im, result);
-                    return;
+                    m_log.WarnFormat("[GRID INSTANT MESSAGE]: Unable to find region {0}", regionID);
+                    break;
                 }
-            }
 
-            if (upd != null)
-            {
-                GridRegion reginfo = m_Scenes[0].GridService.GetRegionByUUID(m_Scenes[0].RegionInfo.ScopeID,
-                    upd.RegionID);
-                if (reginfo != null)
+                // Try to send the message to the agent via the retrieved region.
+                Hashtable msgdata = ConvertGridInstantMessageToXMLRPC(im);
+                msgdata["region_handle"] = 0;
+                bool imresult = doIMSending(reginfo, msgdata);
+
+                // If the message delivery was successful, then cache the entry.
+                if (imresult)
                 {
-                    Hashtable msgdata = ConvertGridInstantMessageToXMLRPC(im);
-                    // Not actually used anymore, left in for compatibility
-                    // Remove at next interface change
-                    //
-                    msgdata["region_handle"] = 0;
-                    bool imresult = doIMSending(reginfo, msgdata);
-                    if (imresult)
-                    {
-                        // IM delivery successful, so store the Agent's location in our local cache.
-                        lock (m_UserRegionMap)
-                        {
-                            if (m_UserRegionMap.ContainsKey(toAgentID))
-                            {
-                                m_UserRegionMap[toAgentID] = upd.RegionID;
-                            }
-                            else
-                            {
-                                m_UserRegionMap.Add(toAgentID, upd.RegionID);
-                            }
-                        }
-                        result(true);
-                    }
-                    else
+                    lock (m_UserRegionMap)
                     {
-                        // 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!!!!!
-                        SendGridInstantMessageViaXMLRPCAsync(im, result,
-                                upd.RegionID);
+                        m_UserRegionMap[toAgentID] = regionID;
                     }
+                    result(true);
+                    return;
                 }
-                else
-                {
-                    m_log.WarnFormat("[GRID INSTANT MESSAGE]: Unable to find region {0}", upd.RegionID);
-                    HandleUndeliverableMessage(im, result);
-                }
-            }
-            else
-            {
-                HandleUndeliverableMessage(im, result);
+
+                // If we reach this point in the first iteration of the while, then we may have unsuccessfully tried
+                // to use a locally cached region ID.  All subsequent attempts need to lookup agent details from
+                // the presence service.
+                needToLookupAgent = true;
             }
+
+            // If we reached this point then the message was not deliverable.  Remove the bad cache entry and 
+            // signal the delivery failure.
+            lock (m_UserRegionMap)
+                m_UserRegionMap.Remove(toAgentID);
+
+            // m_log.Error("[GRID INSTANT MESSAGE]: Unable to deliver an instant message");
+            HandleUndeliverableMessage(im, result);
         }
 
         /// <summary>
@@ -584,7 +533,6 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
         /// <returns>Bool if the message was successfully delivered at the other side.</returns>
         protected virtual bool doIMSending(GridRegion reginfo, Hashtable xmlrpcdata)
         {
-
             ArrayList SendParams = new ArrayList();
             SendParams.Add(xmlrpcdata);
             XmlRpcRequest GridReq = new XmlRpcRequest("grid_instant_message", SendParams);
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index 3b8fbfd..7005c0a 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -4133,7 +4133,10 @@ namespace OpenSim.Region.Framework.Scenes
         /// <returns>true if we handled it.</returns>
         public virtual bool IncomingUpdateChildAgent(AgentPosition cAgentData)
         {
-            //m_log.Debug(" XXX Scene IncomingChildAgentDataUpdate POSITION in " + RegionInfo.RegionName);
+//            m_log.DebugFormat(
+//                "[SCENE PRESENCE]: IncomingChildAgentDataUpdate POSITION for {0} in {1}, position {2}", 
+//                cAgentData.AgentID, Name, cAgentData.Position);
+
             ScenePresence childAgentUpdate = GetScenePresence(cAgentData.AgentID);
             if (childAgentUpdate != null)
             {
diff --git a/OpenSim/Region/Framework/Scenes/ScenePresence.cs b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
index 398d394..17f54c2 100644
--- a/OpenSim/Region/Framework/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
@@ -2754,7 +2754,34 @@ namespace OpenSim.Region.Framework.Scenes
                 part.AddSittingAvatar(this);
 
                 cameraAtOffset = part.GetCameraAtOffset();
+
+                if (!part.IsRoot && cameraAtOffset == Vector3.Zero)
+                    cameraAtOffset = part.ParentGroup.RootPart.GetCameraAtOffset();
+
+                bool cameraEyeOffsetFromRootForChild = false;
                 cameraEyeOffset = part.GetCameraEyeOffset();
+
+                if (!part.IsRoot && cameraEyeOffset == Vector3.Zero)
+                {                 
+                    cameraEyeOffset = part.ParentGroup.RootPart.GetCameraEyeOffset();
+                    cameraEyeOffsetFromRootForChild = true;
+                }
+
+                if ((cameraEyeOffset != Vector3.Zero && !cameraEyeOffsetFromRootForChild) || cameraAtOffset != Vector3.Zero)
+                {
+                    if (!part.IsRoot)
+                    {
+                        cameraEyeOffset = cameraEyeOffset * part.RotationOffset;
+                        cameraAtOffset += part.OffsetPosition;
+                    }
+
+                    cameraEyeOffset += part.OffsetPosition;
+                }
+
+//                m_log.DebugFormat(
+//                    "[SCENE PRESENCE]: Using cameraAtOffset {0}, cameraEyeOffset {1} for sit on {2} by {3} in {4}", 
+//                    cameraAtOffset, cameraEyeOffset, part.Name, Name, Scene.Name);
+
                 forceMouselook = part.GetForceMouselook();
 
                 // An viewer expects to specify sit positions as offsets to the root prim, even if a child prim is
diff --git a/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsScene.cs b/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsScene.cs
index 8e40561..f53adcb 100644
--- a/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsScene.cs
+++ b/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsScene.cs
@@ -147,6 +147,7 @@ namespace OpenSim.Region.Physics.BasicPhysicsPlugin
                     terrainHeight = _heightMap[(int)actor.Position.Y * (int)m_regionExtent.Y + (int)actor.Position.X];
 
                 float height = terrainHeight + actor.Size.Z;
+//                Console.WriteLine("height {0}, actorPosition {1}", height, actorPosition);
 
                 if (actor.Flying)
                 {
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 5590cd5..7d8821c 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -6846,12 +6846,18 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         {
             m_host.AddScriptLPS(1);
             m_host.SetCameraEyeOffset(offset);
+
+            if (m_host.ParentGroup.RootPart.GetCameraEyeOffset() == Vector3.Zero)
+                m_host.ParentGroup.RootPart.SetCameraEyeOffset(offset);
         }
 
         public void llSetCameraAtOffset(LSL_Vector offset)
         {
             m_host.AddScriptLPS(1);
             m_host.SetCameraAtOffset(offset);
+
+            if (m_host.ParentGroup.RootPart.GetCameraAtOffset() == Vector3.Zero)
+                m_host.ParentGroup.RootPart.SetCameraAtOffset(offset);
         }
 
         public void llSetLinkCamera(LSL_Integer link, LSL_Vector eye, LSL_Vector at)
diff --git a/OpenSim/Region/ScriptEngine/Shared/CodeTools/CSCodeGenerator.cs b/OpenSim/Region/ScriptEngine/Shared/CodeTools/CSCodeGenerator.cs
index 6aa717d..8b8e038 100644
--- a/OpenSim/Region/ScriptEngine/Shared/CodeTools/CSCodeGenerator.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/CodeTools/CSCodeGenerator.cs
@@ -162,7 +162,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             m_braceCount++;
 
             // line number
-            m_CSharpLine += 3;
+            m_CSharpLine += 9;
 
             // here's the payload
             retstr += GenerateLine();
diff --git a/OpenSim/Region/ScriptEngine/Shared/CodeTools/Compiler.cs b/OpenSim/Region/ScriptEngine/Shared/CodeTools/Compiler.cs
index b4640ef..1efe798 100644
--- a/OpenSim/Region/ScriptEngine/Shared/CodeTools/Compiler.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/CodeTools/Compiler.cs
@@ -444,7 +444,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
 //            return compileScript;
 //        }
 
-        private static string CreateCSCompilerScript(
+        public static string CreateCSCompilerScript(
             string compileScript, string className, string baseClassName, ParameterInfo[] constructorParameters)
         {
             compileScript = string.Format(    
@@ -472,7 +472,7 @@ namespace SecondLife
             return compileScript;
         }
 
-        private static string CreateVBCompilerScript(string compileScript, string className, string baseClassName)
+        public static string CreateVBCompilerScript(string compileScript, string className, string baseClassName)
         {
             compileScript = String.Empty +
                 "Imports OpenSim.Region.ScriptEngine.Shared: Imports System.Collections.Generic: " +
diff --git a/OpenSim/Region/ScriptEngine/Shared/CodeTools/Tests/CompilerTest.cs b/OpenSim/Region/ScriptEngine/Shared/CodeTools/Tests/CompilerTest.cs
index 05a8756..badf82a 100644
--- a/OpenSim/Region/ScriptEngine/Shared/CodeTools/Tests/CompilerTest.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/CodeTools/Tests/CompilerTest.cs
@@ -31,6 +31,7 @@ using System.Collections.Generic;
 using Microsoft.CSharp;
 using NUnit.Framework;
 using OpenSim.Region.ScriptEngine.Shared.CodeTools;
+using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
 using OpenSim.Tests.Common;
 
 namespace OpenSim.Region.ScriptEngine.Shared.CodeTools.Tests
@@ -66,9 +67,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools.Tests
             m_CSCodeProvider = new CSharpCodeProvider();
             m_compilerParameters = new CompilerParameters();
 
-            string rootPath = Path.Combine(Path.GetDirectoryName(System.AppDomain.CurrentDomain.BaseDirectory), "bin");
+            string rootPath = Path.Combine(Path.GetDirectoryName(System.AppDomain.CurrentDomain.BaseDirectory));
             m_compilerParameters.ReferencedAssemblies.Add(Path.Combine(rootPath, "OpenSim.Region.ScriptEngine.Shared.dll"));
             m_compilerParameters.ReferencedAssemblies.Add(Path.Combine(rootPath, "OpenSim.Region.ScriptEngine.Shared.Api.Runtime.dll"));
+            m_compilerParameters.ReferencedAssemblies.Add(Path.Combine(rootPath, "OpenMetaverseTypes.dll"));
             m_compilerParameters.GenerateExecutable = false;
         }
 
@@ -90,7 +92,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools.Tests
         /// Test the C# compiler error message can be mapped to the correct
         /// line/column in the LSL source when an undeclared variable is used.
         /// </summary>
-        //[Test]
+        [Test]
         public void TestUseUndeclaredVariable()
         {
             TestHelpers.InMethod();
@@ -106,25 +108,37 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools.Tests
 }";
 
             CSCodeGenerator cg = new CSCodeGenerator();
-            string output = "using OpenSim.Region.ScriptEngine.Shared; using System.Collections.Generic;\n" +
-                            "namespace SecondLife { " +
-                            "public class Script : OpenSim.Region.ScriptEngine.Shared.ScriptBase.ScriptBaseClass {\n" +
-                            "public Script() { } " +
-                            cg.Convert(input) +
-                            "} }\n";
+            string output = cg.Convert(input);
+
+            output = Compiler.CreateCSCompilerScript(output, "script1", typeof(ScriptBaseClass).FullName, null);         
+//            System.Console.WriteLine(output);
+
             Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>> positionMap = cg.PositionMap;
 
             m_compilerResults = m_CSCodeProvider.CompileAssemblyFromSource(m_compilerParameters, output);
-
-            Assert.AreEqual(new KeyValuePair<int, int>(5, 21),
-                            positionMap[new KeyValuePair<int, int>(m_compilerResults.Errors[0].Line, m_compilerResults.Errors[0].Column)]);
+//
+//            foreach (KeyValuePair<int, int> key in positionMap.Keys)
+//            {
+//                KeyValuePair<int, int> val = positionMap[key];
+//
+//                System.Console.WriteLine("{0},{1} => {2},{3}", key.Key, key.Value, val.Key, val.Value);
+//            }
+//
+//            foreach (CompilerError compErr in m_compilerResults.Errors)
+//            {
+//                System.Console.WriteLine("Error: {0},{1} => {2}", compErr.Line, compErr.Column, compErr);
+//            }
+
+            Assert.AreEqual(
+                new KeyValuePair<int, int>(5, 21),
+                positionMap[new KeyValuePair<int, int>(m_compilerResults.Errors[0].Line, m_compilerResults.Errors[0].Column)]);
         }
 
         /// <summary>
         /// Test that a string can be cast to string and another string
         /// concatenated.
         /// </summary>
-        //[Test]
+        [Test]
         public void TestCastAndConcatString()
         {
             TestHelpers.InMethod();
@@ -143,15 +157,20 @@ default
     }
 }";
 
+//            System.Console.WriteLine(input);
             CSCodeGenerator cg = new CSCodeGenerator();
-            string output = "using OpenSim.Region.ScriptEngine.Shared; using System.Collections.Generic;\n" +
-                            "namespace SecondLife { " +
-                            "public class Script : OpenSim.Region.ScriptEngine.Shared.ScriptBase.ScriptBaseClass {\n" +
-                            "public Script() { } " +
-                            cg.Convert(input) +
-                            "} }\n";
+            string output = cg.Convert(input);
+
+            output = Compiler.CreateCSCompilerScript(output, "script1", typeof(ScriptBaseClass).FullName, null);
+//            System.Console.WriteLine(output);
+
             m_compilerResults = m_CSCodeProvider.CompileAssemblyFromSource(m_compilerParameters, output);
 
+//            foreach (CompilerError compErr in m_compilerResults.Errors)
+//            {
+//                System.Console.WriteLine("Error: {0}", compErr);
+//            }
+
             Assert.AreEqual(0, m_compilerResults.Errors.Count);
         }
     }
diff --git a/OpenSim/Tests/Common/Helpers/SceneHelpers.cs b/OpenSim/Tests/Common/Helpers/SceneHelpers.cs
index 874ff62..342cd06 100644
--- a/OpenSim/Tests/Common/Helpers/SceneHelpers.cs
+++ b/OpenSim/Tests/Common/Helpers/SceneHelpers.cs
@@ -574,7 +574,11 @@ namespace OpenSim.Tests.Common
 
         public static ScenePresence AddChildScenePresence(Scene scene, UUID agentId)
         {
-            AgentCircuitData acd = GenerateAgentData(agentId);
+            return AddChildScenePresence(scene, GenerateAgentData(agentId));
+        }
+
+        public static ScenePresence AddChildScenePresence(Scene scene, AgentCircuitData acd)
+        {
             acd.child = true;
 
             // XXX: ViaLogin may not be correct for child agents
diff --git a/OpenSim/Tests/Common/Mock/TestClient.cs b/OpenSim/Tests/Common/Mock/TestClient.cs
index c2b0935..8eeaf99 100644
--- a/OpenSim/Tests/Common/Mock/TestClient.cs
+++ b/OpenSim/Tests/Common/Mock/TestClient.cs
@@ -62,14 +62,23 @@ namespace OpenSim.Tests.Common.Mock
         public event Action<RegionInfo, Vector3, Vector3> OnReceivedMoveAgentIntoRegion;
         public event Action<ulong, IPEndPoint> OnTestClientInformClientOfNeighbour;
         public event TestClientOnSendRegionTeleportDelegate OnTestClientSendRegionTeleport;
+
         public event Action<ISceneEntity, PrimUpdateFlags> OnReceivedEntityUpdate;
+
+        public event OnReceivedChatMessageDelegate OnReceivedChatMessage;
         public event Action<GridInstantMessage> OnReceivedInstantMessage;
+
         public event Action<UUID> OnReceivedSendRebakeAvatarTextures;
 
         public delegate void TestClientOnSendRegionTeleportDelegate(
             ulong regionHandle, byte simAccess, IPEndPoint regionExternalEndPoint,
             uint locationID, uint flags, string capsURL);
 
+        public delegate void OnReceivedChatMessageDelegate(
+            string message, byte type, Vector3 fromPos, string fromName,
+            UUID fromAgentID, UUID ownerID, byte source, byte audible);
+
+
 // disable warning: public events, part of the public API
 #pragma warning disable 67
 
@@ -467,6 +476,34 @@ namespace OpenSim.Tests.Common.Mock
         }
 
         /// <summary>
+        /// Trigger chat coming from this connection.
+        /// </summary>
+        /// <param name="channel"></param>
+        /// <param name="type"></param>
+        /// <param name="message"></param>
+        public bool Chat(int channel, ChatTypeEnum type, string message)
+        {
+            ChatMessage handlerChatFromClient = OnChatFromClient;
+
+            if (handlerChatFromClient != null)
+            {
+                OSChatMessage args = new OSChatMessage();
+                args.Channel = channel;
+                args.From = Name;
+                args.Message = message;
+                args.Type = type;
+
+                args.Scene = Scene;
+                args.Sender = this;
+                args.SenderUUID = AgentId;
+
+                handlerChatFromClient(this, args);
+            }
+
+            return true;
+        }
+
+        /// <summary>
         /// Attempt a teleport to the given region.
         /// </summary>
         /// <param name="regionHandle"></param>
@@ -550,6 +587,9 @@ namespace OpenSim.Tests.Common.Mock
             string message, byte type, Vector3 fromPos, string fromName,
             UUID fromAgentID, UUID ownerID, byte source, byte audible)
         {
+//            Console.WriteLine("mmm {0} {1} {2}", message, Name, AgentId);
+            if (OnReceivedChatMessage != null)
+                OnReceivedChatMessage(message, type, fromPos, fromName, fromAgentID, ownerID, source, audible);
         }
 
         public void SendInstantMessage(GridInstantMessage im)
diff --git a/prebuild.xml b/prebuild.xml
index c35b98e..3da7639 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -3082,6 +3082,7 @@
         <Match path="Asset/Tests" pattern="*.cs" recurse="true"/>
         <Match path="Avatar/Attachments/Tests" pattern="*.cs" recurse="true"/>
         <Match path="Avatar/AvatarFactory/Tests" pattern="*.cs" recurse="true"/>
+        <Match path="Avatar/Chat/Tests" pattern="*.cs" recurse="true"/>
         <Match path="Avatar/Friends/Tests" pattern="*.cs" recurse="true"/>
         <Match path="Avatar/Inventory/Archiver/Tests" pattern="*.cs" recurse="true"/>
         <Match path="Avatar/Inventory/Transfer/Tests" pattern="*.cs" recurse="true"/>