Gurux.DLMS.GXDLMSLNCommandHandler.GetRequestWithList C# (CSharp) Method

        private static void GetRequestWithList(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
        {
            ValueEventArgs e;
            GXByteBuffer bb = new GXByteBuffer();
            int pos;
            int cnt = GXCommon.GetObjectCount(data);
            GXCommon.SetObjectCount(cnt, bb);
            List<ValueEventArgs> list = new List<ValueEventArgs>();
            if (xml != null)
            {
                xml.AppendStartTag(TranslatorTags.AttributeDescriptorList, "Qty", xml.IntegerToHex(cnt, 2));
            }
            try
            {
                for (pos = 0; pos != cnt; ++pos)
                {
                    ObjectType ci = (ObjectType)data.GetUInt16();
                    byte[] ln = new byte[6];
                    data.Get(ln);
                    short attributeIndex = data.GetUInt8();
                    // AccessSelection
                    int selection = data.GetUInt8();
                    int selector = 0;
                    object parameters = null;
                    if (selection != 0)
                    {
                        selector = data.GetUInt8();
                        GXDataInfo info = new GXDataInfo();
                        parameters = GXCommon.GetData(settings, data, info);
                    }
                    if (xml != null)
                    {
                        xml.AppendStartTag(TranslatorTags.AttributeDescriptorWithSelection);
                        xml.AppendStartTag(TranslatorTags.AttributeDescriptor);
                        xml.AppendLine(TranslatorTags.ClassId, "Value", xml.IntegerToHex((int)ci, 4));
                        xml.AppendLine(TranslatorTags.InstanceId, "Value", GXCommon.ToHex(ln, false));
                        xml.AppendLine(TranslatorTags.AttributeId, "Value", xml.IntegerToHex(attributeIndex, 2));
                        xml.AppendEndTag(TranslatorTags.AttributeDescriptor);
                        xml.AppendEndTag(TranslatorTags.AttributeDescriptorWithSelection);
                    }
                    else
                    {
                        GXDLMSObject obj = settings.Objects.FindByLN(ci, GXDLMSObject.ToLogicalName(ln));
                        if (obj == null)
                        {
                            obj = server.NotifyFindObject(ci, 0, GXDLMSObject.ToLogicalName(ln));
                        }
                        if (obj == null)
                        {
                            // "Access Error : Device reports a undefined object."
                            e = new ValueEventArgs(settings, obj, attributeIndex, 0, 0);
                            e.Error = ErrorCode.UndefinedObject;
                            list.Add(e);
                        }
                        else
                        {
                            if (obj.GetAccess(attributeIndex) == AccessMode.NoAccess)
                            {
                                //Read Write denied.
                                ValueEventArgs arg = new ValueEventArgs(settings, obj, attributeIndex, 0, null);
                                arg.Error = ErrorCode.ReadWriteDenied;
                                list.Add(arg);
                            }
                            else
                            {
                                ValueEventArgs arg = new ValueEventArgs(settings, obj, attributeIndex, selector, parameters);
                                list.Add(arg);
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                if (xml == null)
                {
                    throw ex;
                }
            }
            if (xml != null)
            {
                xml.AppendEndTag(TranslatorTags.AttributeDescriptorList);
                return;
            }

            server.NotifyRead(list.ToArray());
            object value;
            pos = 0;
            foreach (ValueEventArgs it in list)
            {
                try
                {
                    if (it.Handled)
                    {
                        value = it.Value;
                    }
                    else
                    {
                        value = (it.Target as IGXDLMSBase).GetValue(settings, it);
                    }
                    bb.SetUInt8(it.Error);
                    GXDLMS.AppendData(settings, it.Target, it.Index, bb, value);
                }
                catch (Exception)
                {
                    bb.SetUInt8((byte)ErrorCode.HardwareFault);
                }
                if (settings.Index != settings.Count)
                {
                    server.transaction = new GXDLMSLongTransaction(list.ToArray(), Command.GetRequest, null);
                }
                ++pos;
            }
            GXDLMSLNParameters p = new GXDLMSLNParameters(settings, Command.GetResponse, 3, null, bb, 0xFF);
            GXDLMS.GetLNPdu(p, replyData);
        }