3 files changed, 262 insertions, 232 deletions

diff --git a/OpenSim/Region/CoreModules/Scripting/HttpRequest/ScriptsHttpRequests.cs b/OpenSim/Region/CoreModules/Scripting/HttpRequest/ScriptsHttpRequests.cs
index d328eb3..9dac6b9 100644
--- a/OpenSim/Region/CoreModules/Scripting/HttpRequest/ScriptsHttpRequests.cs
+++ b/OpenSim/Region/CoreModules/Scripting/HttpRequest/ScriptsHttpRequests.cs
@@ -382,6 +382,10 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
             try
             {
                 Request = (HttpWebRequest) WebRequest.Create(Url);
+
+                //This works around some buggy HTTP Servers like Lighttpd
+                Request.ServicePoint.Expect100Continue = false;
+
                 Request.Method = HttpMethod;
                 Request.ContentType = HttpMIMEType;
 
@@ -458,15 +462,36 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
 
                         // continue building the string
                         sb.Append(tempString);
+                        if (sb.Length > 2048)
+                            break;
                     }
                 } while (count > 0); // any more data to read?
 
-                ResponseBody = sb.ToString();
+                ResponseBody = sb.ToString().Replace("\r", "");
             }
             catch (Exception e)
             {
-                Status = (int)OSHttpStatusCode.ClientErrorJoker;
-                ResponseBody = e.Message;
+                if (e is WebException && ((WebException)e).Status == WebExceptionStatus.ProtocolError)
+                {
+                    HttpWebResponse webRsp = (HttpWebResponse)((WebException)e).Response;
+                    Status = (int)webRsp.StatusCode;
+                    try
+                    {
+                        using (Stream responseStream = webRsp.GetResponseStream())
+                        {
+                            ResponseBody = responseStream.GetStreamString();
+                        }
+                    }
+                    catch
+                    {
+                        ResponseBody = webRsp.StatusDescription;
+                    }
+                }
+                else
+                {
+                    Status = (int)OSHttpStatusCode.ClientErrorJoker;
+                    ResponseBody = e.Message;
+                }
 
                 _finished = true;
                 return;
diff --git a/OpenSim/Region/CoreModules/Scripting/LSLHttp/UrlModule.cs b/OpenSim/Region/CoreModules/Scripting/LSLHttp/UrlModule.cs
index 05d54f0..e0e358a 100644
--- a/OpenSim/Region/CoreModules/Scripting/LSLHttp/UrlModule.cs
+++ b/OpenSim/Region/CoreModules/Scripting/LSLHttp/UrlModule.cs
@@ -41,39 +41,13 @@ using OpenSim.Region.Framework.Scenes;
 
 namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
 {
-    /// <summary>
-    /// Data describing an external URL set up by a script.
-    /// </summary>
     public class UrlData
     {
-        /// <summary>
-        /// Scene object part hosting the script
-        /// </summary>
         public UUID hostID;
-
-        /// <summary>
-        /// The item ID of the script that requested the URL.
-        /// </summary>
         public UUID itemID;
-
-        /// <summary>
-        /// The script engine that runs the script.
-        /// </summary>
         public IScriptModule engine;
-
-        /// <summary>
-        /// The generated URL.
-        /// </summary>
         public string url;
-
-        /// <summary>
-        /// The random UUID component of the generated URL.
-        /// </summary>
         public UUID urlcode;
-
-        /// <summary>
-        /// The external requests currently being processed or awaiting retrieval for this URL.
-        /// </summary>
         public Dictionary<UUID, RequestData> requests;
     }
 
@@ -87,37 +61,26 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
         //public ManualResetEvent ev;
         public bool requestDone;
         public int startTime;
+        public bool responseSent;
         public string uri;
     }
 
-    /// <summary>
-    /// This module provides external URLs for in-world scripts.
-    /// </summary>
     public class UrlModule : ISharedRegionModule, IUrlModule
     {
         private static readonly ILog m_log =
                 LogManager.GetLogger(
                 MethodBase.GetCurrentMethod().DeclaringType);
 
-        /// <summary>
-        /// Indexs the URL request metadata (which script requested it, outstanding requests, etc.) by the request ID
-        /// randomly generated when a request is received for this URL.
-        /// </summary>
-        /// <remarks>
-        /// Manipulation or retrieval from this dictionary must be locked on m_UrlMap to preserve consistency with
-        /// m_UrlMap
-        /// </remarks>
-        private Dictionary<UUID, UrlData> m_RequestMap = new Dictionary<UUID, UrlData>();
+        private Dictionary<UUID, UrlData> m_RequestMap =
+                new Dictionary<UUID, UrlData>();
 
-        /// <summary>
-        /// Indexs the URL request metadata (which script requested it, outstanding requests, etc.) by the full URL
-        /// </summary>
-        private Dictionary<string, UrlData> m_UrlMap = new Dictionary<string, UrlData>();
+        private Dictionary<string, UrlData> m_UrlMap =
+                new Dictionary<string, UrlData>();
 
         /// <summary>
         /// Maximum number of external urls that can be set up by this module.
         /// </summary>
-        private int m_TotalUrls = 100;
+        private int m_TotalUrls = 15000;
 
         private uint https_port = 0;
         private IHttpServer m_HttpServer = null;
@@ -143,9 +106,10 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
         {
             m_ExternalHostNameForLSL = config.Configs["Network"].GetString("ExternalHostNameForLSL", System.Environment.MachineName);
             bool ssl_enabled = config.Configs["Network"].GetBoolean("https_listener",false);
-
             if (ssl_enabled)
+            {
                 https_port = (uint) config.Configs["Network"].GetInt("https_port",0);
+            }
 
             IConfig llFunctionsConfig = config.Configs["LL-Functions"];
 
@@ -206,7 +170,7 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                     engine.PostScriptEvent(itemID, "http_request", new Object[] { urlcode.ToString(), "URL_REQUEST_DENIED", "" });
                     return urlcode;
                 }
-                string url = "http://" + m_ExternalHostNameForLSL + ":" + m_HttpServer.Port.ToString() + "/lslhttp/" + urlcode.ToString() + "/";
+                string url = "http://" + m_ExternalHostNameForLSL + ":" + m_HttpServer.Port.ToString() + "/lslhttp/" + urlcode.ToString();
 
                 UrlData urlData = new UrlData();
                 urlData.hostID = host.UUID;
@@ -215,14 +179,14 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                 urlData.url = url;
                 urlData.urlcode = urlcode;
                 urlData.requests = new Dictionary<UUID, RequestData>();
-                
+
                 m_UrlMap[url] = urlData;
                 
-                string uri = "/lslhttp/" + urlcode.ToString() + "/";
+                string uri = "/lslhttp/" + urlcode.ToString();
                
-                m_HttpServer.AddPollServiceHTTPHandler(
-                    uri,
-                    new PollServiceEventArgs(HttpRequestHandler, HasEvents, GetEvents, NoEvents, urlcode));
+                PollServiceEventArgs args = new PollServiceEventArgs(HttpRequestHandler, HasEvents, GetEvents, NoEvents, urlcode, 25000);
+                args.Type = PollServiceEventArgs.EventType.LslHttp;
+                m_HttpServer.AddPollServiceHTTPHandler(uri, args);
 
                 m_log.DebugFormat(
                     "[URL MODULE]: Set up incoming request url {0} for {1} in {2} {3}",
@@ -251,7 +215,7 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                     engine.PostScriptEvent(itemID, "http_request", new Object[] { urlcode.ToString(), "URL_REQUEST_DENIED", "" });
                     return urlcode;
                 }
-                string url = "https://" + m_ExternalHostNameForLSL + ":" + m_HttpsServer.Port.ToString() + "/lslhttps/" + urlcode.ToString() + "/";
+                string url = "https://" + m_ExternalHostNameForLSL + ":" + m_HttpsServer.Port.ToString() + "/lslhttps/" + urlcode.ToString();
 
                 UrlData urlData = new UrlData();
                 urlData.hostID = host.UUID;
@@ -261,13 +225,14 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                 urlData.urlcode = urlcode;
                 urlData.requests = new Dictionary<UUID, RequestData>();
 
+                
                 m_UrlMap[url] = urlData;
                 
-                string uri = "/lslhttps/" + urlcode.ToString() + "/";
+                string uri = "/lslhttps/" + urlcode.ToString();
                
-                m_HttpsServer.AddPollServiceHTTPHandler(
-                    uri,
-                    new PollServiceEventArgs(HttpRequestHandler, HasEvents, GetEvents, NoEvents, urlcode));
+                PollServiceEventArgs args = new PollServiceEventArgs(HttpRequestHandler, HasEvents, GetEvents, NoEvents, urlcode, 25000);
+                args.Type = PollServiceEventArgs.EventType.LslHttp;
+                m_HttpsServer.AddPollServiceHTTPHandler(uri, args);
 
                 m_log.DebugFormat(
                     "[URL MODULE]: Set up incoming secure request url {0} for {1} in {2} {3}",
@@ -290,12 +255,15 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                     return;
                 }
 
-                foreach (UUID req in data.requests.Keys)
-                    m_RequestMap.Remove(req);
-
-                m_log.DebugFormat(
-                    "[URL MODULE]: Releasing url {0} for {1} in {2}",
-                    url, data.itemID, data.hostID);
+                lock (m_RequestMap)
+                {
+                    foreach (UUID req in data.requests.Keys)
+                        m_RequestMap.Remove(req);
+                }
+                        
+//                m_log.DebugFormat(
+//                    "[URL MODULE]: Releasing url {0} for {1} in {2}",
+//                    url, data.itemID, data.hostID);
 
                 RemoveUrl(data);
                 m_UrlMap.Remove(url);
@@ -304,15 +272,19 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
         
         public void HttpResponse(UUID request, int status, string body)
         {
-            lock (m_UrlMap)
+            lock (m_RequestMap)
             {
                 if (m_RequestMap.ContainsKey(request))
                 {
                     UrlData urlData = m_RequestMap[request];
-                    urlData.requests[request].responseCode = status;
-                    urlData.requests[request].responseBody = body;
-                    //urlData.requests[request].ev.Set();
-                    urlData.requests[request].requestDone =true;
+                    if (!urlData.requests[request].responseSent)
+                    {
+                        urlData.requests[request].responseCode = status;
+                        urlData.requests[request].responseBody = body;
+                        //urlData.requests[request].ev.Set();
+                        urlData.requests[request].requestDone = true;
+                        urlData.requests[request].responseSent = true;
+                    }
                 }
                 else
                 {
@@ -323,7 +295,7 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
 
         public string GetHttpHeader(UUID requestId, string header)
         {
-            lock (m_UrlMap)
+            lock (m_RequestMap)
             {
                 if (m_RequestMap.ContainsKey(requestId))
                 {
@@ -337,14 +309,12 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                     m_log.Warn("[HttpRequestHandler] There was no http-in request with id " + requestId);
                 }
             }
-
             return String.Empty;
         }
 
         public int GetFreeUrls()
         {
-            lock (m_UrlMap)
-                return m_TotalUrls - m_UrlMap.Count;
+            return m_TotalUrls - m_UrlMap.Count;
         }
 
         public void ScriptRemoved(UUID itemID)
@@ -361,8 +331,11 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                     {
                         RemoveUrl(url.Value);
                         removeURLs.Add(url.Key);
-                        foreach (UUID req in url.Value.requests.Keys)
-                            m_RequestMap.Remove(req);
+                        lock (m_RequestMap)
+                        {
+                            foreach (UUID req in url.Value.requests.Keys)
+                                m_RequestMap.Remove(req);
+                        }
                     }
                 }
 
@@ -383,9 +356,11 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                     {
                         RemoveUrl(url.Value);
                         removeURLs.Add(url.Key);
-
-                        foreach (UUID req in url.Value.requests.Keys)
-                            m_RequestMap.Remove(req);
+                        lock (m_RequestMap)
+                        {
+                            foreach (UUID req in url.Value.requests.Keys)
+                                m_RequestMap.Remove(req);
+                        }
                     }
                 }
 
@@ -394,122 +369,125 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
             }
         }
 
+
         private void RemoveUrl(UrlData data)
         {
-            m_HttpServer.RemoveHTTPHandler("", "/lslhttp/" + data.urlcode.ToString() + "/");
+            m_HttpServer.RemoveHTTPHandler("", "/lslhttp/"+data.urlcode.ToString()+"/");
         }
 
         private Hashtable NoEvents(UUID requestID, UUID sessionID)
         {
             Hashtable response = new Hashtable();
-            UrlData urlData;
-
-            lock (m_UrlMap)
+            UrlData url;
+            int startTime = 0;
+            lock (m_RequestMap)
             {
-                // We need to return a 404 here in case the request URL was removed at exactly the same time that a
-                // request was made.  In this case, the request thread can outrace llRemoveURL() and still be polling
-                // for the request ID.
                 if (!m_RequestMap.ContainsKey(requestID))
-                {
-                    response["int_response_code"] = 404;
-                    response["str_response_string"] = "";
-                    response["keepalive"] = false;
-                    response["reusecontext"] = false;
-
                     return response;
-                }
+                url = m_RequestMap[requestID];
+                startTime = url.requests[requestID].startTime;
+            }
 
-                urlData = m_RequestMap[requestID];
+            if (System.Environment.TickCount - startTime > 25000)
+            {
+                response["int_response_code"] = 500;
+                response["str_response_string"] = "Script timeout";
+                response["content_type"] = "text/plain";
+                response["keepalive"] = false;
+                response["reusecontext"] = false;
 
-                if (System.Environment.TickCount - urlData.requests[requestID].startTime > 25000)
+                //remove from map
+                lock (url.requests)
+                {
+                    url.requests.Remove(requestID);
+                }
+                lock (m_RequestMap)
                 {
-                    response["int_response_code"] = 500;
-                    response["str_response_string"] = "Script timeout";
-                    response["content_type"] = "text/plain";
-                    response["keepalive"] = false;
-                    response["reusecontext"] = false;
-    
-                    //remove from map
-                    urlData.requests.Remove(requestID);
                     m_RequestMap.Remove(requestID);
-
-                    return response;
                 }
+
+                return response;
             }
 
+            
             return response;
         }
 
         private bool HasEvents(UUID requestID, UUID sessionID)
         {
-            lock (m_UrlMap)
+            UrlData url=null;
+            
+            lock (m_RequestMap)
             {
-                // We return true here because an external URL request that happened at the same time as an llRemoveURL()
-                // can still make it through to HttpRequestHandler().  That will return without setting up a request
-                // when it detects that the URL has been removed.  The poller, however, will continue to ask for
-                // events for that request, so here we will signal that there are events and in GetEvents we will
-                // return a 404.
                 if (!m_RequestMap.ContainsKey(requestID))
                 {
-                    return true;
+                    return false;
                 }
-
-                UrlData urlData = m_RequestMap[requestID];
-
-                if (!urlData.requests.ContainsKey(requestID))
+                url = m_RequestMap[requestID];
+            }
+            lock (url.requests)
+            {
+                if (!url.requests.ContainsKey(requestID))
                 {
-                    return true;
+                    return false;
                 }
-
-                // Trigger return of timeout response.
-                if (System.Environment.TickCount - urlData.requests[requestID].startTime > 25000)
+                else
                 {
-                    return true;
+                    if (System.Environment.TickCount - url.requests[requestID].startTime > 25000)
+                    {
+                        return true;
+                    }
+                    if (url.requests[requestID].requestDone)
+                        return true;
+                    else
+                        return false;
                 }
-
-                return urlData.requests[requestID].requestDone;
             }
         }
-
         private Hashtable GetEvents(UUID requestID, UUID sessionID, string request)
         {
-            Hashtable response;
+            UrlData url = null;
+            RequestData requestData = null;
 
-            lock (m_UrlMap)
+            lock (m_RequestMap)
             {
-                UrlData url = null;
-                RequestData requestData = null;
-
                 if (!m_RequestMap.ContainsKey(requestID))
-                    return NoEvents(requestID, sessionID);
-
+                    return NoEvents(requestID,sessionID);
                 url = m_RequestMap[requestID];
+            }
+            lock (url.requests)
+            {
                 requestData = url.requests[requestID];
+            }
+            
+            if (!requestData.requestDone)
+                return NoEvents(requestID,sessionID);
+            
+            Hashtable response = new Hashtable();
 
-                if (!requestData.requestDone)
-                    return NoEvents(requestID, sessionID);
-
-                response = new Hashtable();
-
-                if (System.Environment.TickCount - requestData.startTime > 25000)
-                {
-                    response["int_response_code"] = 500;
-                    response["str_response_string"] = "Script timeout";
-                    response["content_type"] = "text/plain";
-                    response["keepalive"] = false;
-                    response["reusecontext"] = false;
-                    return response;
-                }
-
-                //put response
-                response["int_response_code"] = requestData.responseCode;
-                response["str_response_string"] = requestData.responseBody;
+            if (System.Environment.TickCount - requestData.startTime > 25000)
+            {
+                response["int_response_code"] = 500;
+                response["str_response_string"] = "Script timeout";
                 response["content_type"] = "text/plain";
                 response["keepalive"] = false;
                 response["reusecontext"] = false;
-
-                //remove from map
+                return response;
+            }
+            //put response
+            response["int_response_code"] = requestData.responseCode;
+            response["str_response_string"] = requestData.responseBody;
+            response["content_type"] = "text/plain";
+            response["keepalive"] = false;
+            response["reusecontext"] = false;
+            
+            //remove from map
+            lock (url.requests)
+            {
                 url.requests.Remove(requestID);
+            }
+            lock (m_RequestMap)
+            {
                 m_RequestMap.Remove(requestID);
             }
 
@@ -518,41 +496,45 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
 
         public void HttpRequestHandler(UUID requestID, Hashtable request)
         {
-            string uri = request["uri"].ToString();
-            bool is_ssl = uri.Contains("lslhttps");
-
-            try
+            lock (request)
             {
-                Hashtable headers = (Hashtable)request["headers"];
-
-//                    string uri_full = "http://" + m_ExternalHostNameForLSL + ":" + m_HttpServer.Port.ToString() + uri;// "/lslhttp/" + urlcode.ToString() + "/";
+                string uri = request["uri"].ToString();
+                bool is_ssl = uri.Contains("lslhttps");
 
-                int pos1 = uri.IndexOf("/");// /lslhttp
-                int pos2 = uri.IndexOf("/", pos1 + 1);// /lslhttp/
-                int pos3 = uri.IndexOf("/", pos2 + 1);// /lslhttp/<UUID>/
-                string uri_tmp = uri.Substring(0, pos3 + 1);
-                //HTTP server code doesn't provide us with QueryStrings
-                string pathInfo;
-                string queryString;
-                queryString = "";
-
-                pathInfo = uri.Substring(pos3);
-
-                UrlData urlData = null;
-
-                lock (m_UrlMap)
+                try
                 {
-                    string url;
+                    Hashtable headers = (Hashtable)request["headers"];
+
+//                    string uri_full = "http://" + m_ExternalHostNameForLSL + ":" + m_HttpServer.Port.ToString() + uri;// "/lslhttp/" + urlcode.ToString() + "/";
 
-                    if (is_ssl)
-                        url = "https://" + m_ExternalHostNameForLSL + ":" + m_HttpsServer.Port.ToString() + uri_tmp;
+                    int pos1 = uri.IndexOf("/");// /lslhttp
+                    int pos2 = uri.IndexOf("/", pos1 + 1);// /lslhttp/
+                    int pos3 = pos2 + 37; // /lslhttp/urlcode
+                    string uri_tmp = uri.Substring(0, pos3);
+                    //HTTP server code doesn't provide us with QueryStrings
+                    string pathInfo;
+                    string queryString;
+                    queryString = "";
+
+                    pathInfo = uri.Substring(pos3);
+
+                    UrlData url = null;
+                    string urlkey;
+                    if (!is_ssl)
+                        urlkey = "http://" + m_ExternalHostNameForLSL + ":" + m_HttpServer.Port.ToString() + uri_tmp;
+                    //m_UrlMap[];
                     else
-                        url = "http://" + m_ExternalHostNameForLSL + ":" + m_HttpServer.Port.ToString() + uri_tmp;
+                        urlkey = "https://" + m_ExternalHostNameForLSL + ":" + m_HttpsServer.Port.ToString() + uri_tmp;
 
-                    // Avoid a race - the request URL may have been released via llRequestUrl() whilst this
-                    // request was being processed.
-                    if (!m_UrlMap.TryGetValue(url, out urlData))
+                    if (m_UrlMap.ContainsKey(urlkey))
+                    {
+                        url = m_UrlMap[urlkey];
+                    }
+                    else
+                    {
+                        //m_log.Warn("[HttpRequestHandler]: http-in request failed; no such url: "+urlkey.ToString());
                         return;
+                    }
 
                     //for llGetHttpHeader support we need to store original URI here
                     //to make x-path-info / x-query-string / x-script-url / x-remote-ip headers 
@@ -572,7 +554,6 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                         string value = (string)header.Value;
                         requestData.headers.Add(key, value);
                     }
-
                     foreach (DictionaryEntry de in request)
                     {
                         if (de.Key.ToString() == "querystringkeys")
@@ -583,13 +564,21 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                                 if (request.ContainsKey(key))
                                 {
                                     string val = (String)request[key];
-                                    queryString = queryString + key + "=" + val + "&";
+                                    if (key != "")
+                                    {
+                                        queryString = queryString + key + "=" + val + "&";
+                                    }
+                                    else
+                                    {
+                                        queryString = queryString + val + "&";
+                                    }                                    
                                 }
                             }
-
                             if (queryString.Length > 1)
                                 queryString = queryString.Substring(0, queryString.Length - 1);
+
                         }
+
                     }
 
                     //if this machine is behind DNAT/port forwarding, currently this is being
@@ -597,23 +586,34 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                     requestData.headers["x-remote-ip"] = requestData.headers["remote_addr"];
                     requestData.headers["x-path-info"] = pathInfo;
                     requestData.headers["x-query-string"] = queryString;
-                    requestData.headers["x-script-url"] = urlData.url;
+                    requestData.headers["x-script-url"] = url.url;
 
-                    urlData.requests.Add(requestID, requestData);
-                    m_RequestMap.Add(requestID, urlData);
-                }
+                    //requestData.ev = new ManualResetEvent(false);
+                    lock (url.requests)
+                    {
+                        url.requests.Add(requestID, requestData);
+                    }
+                    lock (m_RequestMap)
+                    {
+                        //add to request map
+                        m_RequestMap.Add(requestID, url);
+                    }
 
-                urlData.engine.PostScriptEvent(
-                    urlData.itemID,
-                    "http_request",
-                    new Object[] { requestID.ToString(), request["http-method"].ToString(), request["body"].ToString() });
-            }
-            catch (Exception we)
-            {
-                //Hashtable response = new Hashtable();
-                m_log.Warn("[HttpRequestHandler]: http-in request failed");
-                m_log.Warn(we.Message);
-                m_log.Warn(we.StackTrace);
+                    url.engine.PostScriptEvent(url.itemID, "http_request", new Object[] { requestID.ToString(), request["http-method"].ToString(), request["body"].ToString() });
+
+                    //send initial response?
+//                    Hashtable response = new Hashtable();
+
+                    return;
+
+                }
+                catch (Exception we)
+                {
+                    //Hashtable response = new Hashtable();
+                    m_log.Warn("[HttpRequestHandler]: http-in request failed");
+                    m_log.Warn(we.Message);
+                    m_log.Warn(we.StackTrace);
+                }
             }
         }
 
@@ -622,4 +622,4 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
             ScriptRemoved(itemID);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/OpenSim/Region/CoreModules/Scripting/WorldComm/WorldCommModule.cs b/OpenSim/Region/CoreModules/Scripting/WorldComm/WorldCommModule.cs
index 8358bc0..07bb291 100644
--- a/OpenSim/Region/CoreModules/Scripting/WorldComm/WorldCommModule.cs
+++ b/OpenSim/Region/CoreModules/Scripting/WorldComm/WorldCommModule.cs
@@ -90,6 +90,8 @@ namespace OpenSim.Region.CoreModules.Scripting.WorldComm
         // private static readonly ILog m_log =
         //     LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
+        private const int DEBUG_CHANNEL = 2147483647;
+
         private ListenerManager m_listenerManager;
         private Queue m_pending;
         private Queue m_pendingQ;
@@ -308,56 +310,59 @@ namespace OpenSim.Region.CoreModules.Scripting.WorldComm
         /// <param name='msg'>
         /// Message.
         /// </param>
-        public void DeliverMessageTo(UUID target, int channel, Vector3 pos, string name, UUID id, string msg)
+        public bool DeliverMessageTo(UUID target, int channel, Vector3 pos, string name, UUID id, string msg, out string error)
         {
+            error = null;
+
+            if (channel == DEBUG_CHANNEL)
+                return true;
+
             // Is id an avatar?
             ScenePresence sp = m_scene.GetScenePresence(target);
 
             if (sp != null)
             {
-                // ignore if a child agent this is restricted to inside one region
-                if (sp.IsChildAgent)
-                    return;
-
-                // Send message to the avatar.
-                // Channel zero only goes to the avatar
-                // non zero channel messages only go to the attachments
+                // Send message to avatar
                 if (channel == 0)
                 {
-                    m_scene.SimChatToAgent(target, Utils.StringToBytes(msg), pos, name, id, false);
-               }
-                else
-                {
-                    List<SceneObjectGroup> attachments = sp.GetAttachments();
-                    if (attachments.Count == 0)
-                        return;
+                    // Channel 0 goes to viewer ONLY
+                    m_scene.SimChat(Utils.StringToBytes(msg), ChatTypeEnum.Broadcast, 0, pos, name, id, false, false, target);
+                    return true;
+                }
 
-                    // Get uuid of attachments
-                    List<UUID> targets = new List<UUID>();
-                    foreach (SceneObjectGroup sog in attachments)
-                    {
-                        if (!sog.IsDeleted)
-                            targets.Add(sog.UUID);
-                    }
+                List<SceneObjectGroup> attachments = sp.GetAttachments();
 
-                    // Need to check each attachment
-                    foreach (ListenerInfo li in m_listenerManager.GetListeners(UUID.Zero, channel, name, id, msg))
-                    {
-                        if (li.GetHostID().Equals(id))
-                            continue;
+                if (attachments.Count == 0)
+                    return true;
 
-                        if (m_scene.GetSceneObjectPart(li.GetHostID()) == null)
-                            continue;
+                // Get uuid of attachments
+                List<UUID> targets = new List<UUID>();
+                foreach (SceneObjectGroup sog in attachments)
+                {
+                    if (!sog.IsDeleted)
+                        targets.Add(sog.UUID);
+                }
 
-                        if (targets.Contains(li.GetHostID()))
-                            QueueMessage(new ListenerInfo(li, name, id, msg));
-                    }
+                // Need to check each attachment
+                foreach (ListenerInfo li in m_listenerManager.GetListeners(UUID.Zero, channel, name, id, msg))
+                {
+                    if (li.GetHostID().Equals(id))
+                        continue;
+
+                    if (m_scene.GetSceneObjectPart(li.GetHostID()) == null)
+                        continue;
+
+                    if (targets.Contains(li.GetHostID()))
+                        QueueMessage(new ListenerInfo(li, name, id, msg));
                 }
 
-                return;
+                return true;
             }
 
-            // No avatar found so look for an object
+            SceneObjectPart part = m_scene.GetSceneObjectPart(target);
+            if (part == null) // Not even an object
+                return true; // No error
+
             foreach (ListenerInfo li in m_listenerManager.GetListeners(UUID.Zero, channel, name, id, msg))
             {
                 // Dont process if this message is from yourself!
@@ -375,7 +380,7 @@ namespace OpenSim.Region.CoreModules.Scripting.WorldComm
                 }
             }
 
-            return;
+            return true;
         }
 
         protected void QueueMessage(ListenerInfo li)