Thank you, Grumly57 kindly for:

This patch proposes a new function : osOpenRemoteDataChannel(key channeID) 
that allow to open an XMLRPC channel for remote_data event. The difference 
is that the channelID can be customized instead of being randomly generated.

OpenSim/Region/Environment/Interfaces/IXMLRPC.cs

@@ -32,7 +32,7 @@ namespace OpenSim.Region.Environment.Interfaces
 {
     public interface IXMLRPC
     {
-        LLUUID OpenXMLRPCChannel(uint localID, LLUUID itemID);
+        LLUUID OpenXMLRPCChannel(uint localID, LLUUID itemID, LLUUID channelID);
         void CloseXMLRPCChannel(LLUUID channelKey);
         bool hasRequests();
         void RemoteDataReply(string channel, string message_id, string sdata, int idata);

OpenSim/Region/Environment/Modules/Scripting/XMLRPC/XMLRPCModule.cs

@@ -160,6 +160,10 @@ namespace OpenSim.Region.Environment.Modules.Scripting.XMLRPC
          *
          * Generate a LLUUID channel key and add it and
          * the prim id to dictionary <channelUUID, primUUID>
+         * 
+         * A custom channel key can be proposed.
+         * Otherwise, passing LLUUID.Zero will generate 
+         * and return a random channel
          *
          * First check if there is a channel assigned for
          * this itemID.  If there is, then someone called
@@ -169,9 +173,9 @@ namespace OpenSim.Region.Environment.Modules.Scripting.XMLRPC
          *
          * ********************************************/
 
-        public LLUUID OpenXMLRPCChannel(uint localID, LLUUID itemID)
+        public LLUUID OpenXMLRPCChannel(uint localID, LLUUID itemID, LLUUID channelID)
         {
-            LLUUID channel = new LLUUID();
+            LLUUID newChannel = LLUUID.Zero;
 
             //Is a dupe?
             foreach (RPCChannelInfo ci in m_openChannels.Values)
@@ -179,22 +183,22 @@ namespace OpenSim.Region.Environment.Modules.Scripting.XMLRPC
                 if (ci.GetItemID().Equals(itemID))
                 {
                     // return the original channel ID for this item
-                    channel = ci.GetChannelID();
+                    newChannel = ci.GetChannelID();
                     break;
                 }
             }
 
-            if (channel == LLUUID.Zero)
+            if (newChannel == LLUUID.Zero)
             {
-                channel = LLUUID.Random();
+                newChannel = (channelID == LLUUID.Zero) ? LLUUID.Random() : channelID;
-                RPCChannelInfo rpcChanInfo = new RPCChannelInfo(localID, itemID, channel);
+                RPCChannelInfo rpcChanInfo = new RPCChannelInfo(localID, itemID, newChannel);
                 lock (XMLRPCListLock)
                 {
-                    m_openChannels.Add(channel, rpcChanInfo);
+                    m_openChannels.Add(newChannel, rpcChanInfo);
                 }
             }
 
-            return channel;
+            return newChannel;
         }
 
         // Delete channels based on itemID

OpenSim/Region/ScriptEngine/Common/BuiltIn_Commands_BaseClass.cs

@@ -2011,6 +2011,11 @@ namespace OpenSim.Region.ScriptEngine.Common
             m_LSL_Functions.osSetStateEvents(events);
         }
 
+        public void osOpenRemoteDataChannel(string channel)
+        {
+            m_LSL_Functions.osOpenRemoteDataChannel(channel);
+        }
+
         //
 
         public double llList2Float(LSL_Types.list src, int index)

OpenSim/Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs

@@ -4362,7 +4362,7 @@ namespace OpenSim.Region.ScriptEngine.Common
             IXMLRPC xmlrpcMod = m_ScriptEngine.World.RequestModuleInterface<IXMLRPC>();
             if (xmlrpcMod.IsEnabled())
             {
-                LLUUID channelID = xmlrpcMod.OpenXMLRPCChannel(m_localID, m_itemID);
+                LLUUID channelID = xmlrpcMod.OpenXMLRPCChannel(m_localID, m_itemID, LLUUID.Zero);
                 object[] resobj = new object[] { new LSL_Types.LSLInteger(1), new LSL_Types.LSLString(channelID.ToString()), new LSL_Types.LSLString(LLUUID.Zero.ToString()), new LSL_Types.LSLString(String.Empty), new LSL_Types.LSLInteger(0), new LSL_Types.LSLString(String.Empty) };
                 m_ScriptEngine.m_EventQueueManager.AddToScriptQueue(m_localID, m_itemID, "remote_data", EventQueueManager.llDetectNull, resobj);
             }

OpenSim/Region/ScriptEngine/Common/OSSL_BuilIn_Commands.cs

@@ -31,6 +31,7 @@ using Nini.Config;
 using OpenSim.Framework.Console;
 using OpenSim.Region.Environment.Interfaces;
 using OpenSim.Region.Environment.Scenes;
+using OpenSim.Region.ScriptEngine.Common.ScriptEngineBase;
 
 //using OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.LSL;
 
@@ -531,5 +532,16 @@ namespace OpenSim.Region.ScriptEngine.Common
             m_host.SetScriptEvents(m_itemID, events);
         }
 
+        public void osOpenRemoteDataChannel(string channel)
+        {
+            m_host.AddScriptLPS(1);
+            IXMLRPC xmlrpcMod = m_ScriptEngine.World.RequestModuleInterface<IXMLRPC>();
+            if (xmlrpcMod.IsEnabled())
+            {
+                LLUUID channelID = xmlrpcMod.OpenXMLRPCChannel(m_localID, m_itemID, new LLUUID(channel));
+                object[] resobj = new object[] { new LSL_Types.LSLInteger(1), new LSL_Types.LSLString(channelID.ToString()), new LSL_Types.LSLString(LLUUID.Zero.ToString()), new LSL_Types.LSLString(String.Empty), new LSL_Types.LSLInteger(0), new LSL_Types.LSLString(String.Empty) };
+                m_ScriptEngine.m_EventQueueManager.AddToScriptQueue(m_localID, m_itemID, "remote_data", EventQueueManager.llDetectNull, resobj);
+            }
+        }
     }
 }

OpenSim/Region/ScriptEngine/Common/OSSL_BuilIn_Commands_Interface.cs

@@ -62,5 +62,7 @@ namespace OpenSim.Region.ScriptEngine.Common
         string osDrawImage(string drawList, int width, int height, string imageUrl);
         void osSetStateEvents(int events);
 
+        void osOpenRemoteDataChannel(string channel);
+
     }
 }