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

        public static void HandleAccessRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data,
                                               GXByteBuffer reply, GXDLMSTranslatorStructure xml)
        {
            //Return error if connection is not established.
            if (xml == null && !settings.Connected)
            {
                reply.Set(GXDLMSServer.GenerateConfirmedServiceError(ConfirmedServiceError.InitiateError,
                          ServiceError.Service, (byte)Service.Unsupported));
                return;
            }
            //Get long invoke id and priority.
            UInt32 invokeId = data.GetUInt32();
            int len = GXCommon.GetObjectCount(data);
            byte[] tmp = null;
            // If date time is given.
            if (len != 0)
            {
                tmp = new byte[len];
                data.Get(tmp);
                if (xml == null)
                {
                    DataType dt = DataType.DateTime;
                    if (len == 4)
                    {
                        dt = DataType.Time;
                    }
                    else if (len == 5)
                    {
                        dt = DataType.Date;
                    }
                    GXDataInfo info = new GXDataInfo();
                    info.Type = dt;
                    GXCommon.GetData(settings, new GXByteBuffer(tmp), info);

                }
            }
            // Get object count.
            int cnt = GXCommon.GetObjectCount(data);
            if (xml != null)
            {
                xml.AppendStartTag(Command.AccessRequest);
                xml.AppendLine(TranslatorTags.LongInvokeId, "Value", xml.IntegerToHex(invokeId, 2));
                xml.AppendLine(TranslatorTags.DateTime, "Value", GXCommon.ToHex(tmp, false));
                xml.AppendStartTag(TranslatorTags.AccessRequestBody);
                xml.AppendStartTag(TranslatorTags.ListOfAccessRequestSpecification, "Qty",
                                   xml.IntegerToHex(cnt, 2));
            }
            AccessServiceCommandType type;
            for (int pos = 0; pos != cnt; ++pos)
            {
                type = (AccessServiceCommandType)data.GetUInt8();
                if (!(type == AccessServiceCommandType.Get ||
                        type == AccessServiceCommandType.Set ||
                        type == AccessServiceCommandType.Action))
                {
                    throw new ArgumentException("Invalid access service command type.");
                }
                // CI
                ObjectType ci = (ObjectType)data.GetUInt16();
                byte[] ln = new byte[6];
                data.Get(ln);
                // Attribute Id
                byte attributeIndex = data.GetUInt8();
                if (xml != null)
                {
                    xml.AppendStartTag(TranslatorTags.AccessRequestSpecification);
                    xml.AppendStartTag(Command.AccessRequest, type);
                    AppendAttributeDescriptor(xml, (int)ci, ln, attributeIndex);
                    xml.AppendEndTag(Command.AccessRequest, type);
                    xml.AppendEndTag(TranslatorTags.AccessRequestSpecification);

                }
            }
            if (xml != null)
            {
                xml.AppendEndTag(TranslatorTags.ListOfAccessRequestSpecification);
                xml.AppendStartTag(TranslatorTags.AccessRequestListOfData, "Qty", xml.IntegerToHex(cnt, 2));
            }
            // Get data count.
            cnt = GXCommon.GetObjectCount(data);
            for (int pos = 0; pos != cnt; ++pos)
            {

                GXDataInfo di = new GXDataInfo();
                di.xml = xml;
                if (xml != null && xml.OutputType == TranslatorOutputType.StandardXml)
                {
                    xml.AppendStartTag(Command.WriteRequest, SingleReadResponse.Data);
                }
                object value = GXCommon.GetData(settings, data, di);
                if (!di.Complete)
                {
                    value = GXCommon.ToHex(data.Data, false, data.Position, data.Size - data.Position);
                }
                else if (value is byte[])
                {
                    value = GXCommon.ToHex((byte[])value, false);
                }
                if (xml != null && xml
                        .OutputType == TranslatorOutputType.StandardXml)
                {
                    xml.AppendEndTag(Command.WriteRequest, SingleReadResponse.Data);
                }
            }
            if (xml != null)
            {
                xml.AppendEndTag(TranslatorTags.AccessRequestListOfData);
                xml.AppendEndTag(TranslatorTags.AccessRequestBody);
                xml.AppendEndTag(Command.AccessRequest);
            }
        }
    }

        ///<summary>
        /// Handle received command.
        ///</summary>
        private byte[] HandleCommand(Command cmd, GXByteBuffer data, GXDLMSConnectionEventArgs connectionInfo)
        {
            byte frame = 0;

            switch (cmd)
            {
            case Command.AccessRequest:
                GXDLMSLNCommandHandler.HandleAccessRequest(Settings, this, data, replyData, null);
                break;

            case Command.SetRequest:
                GXDLMSLNCommandHandler.HandleSetRequest(Settings, this, data, replyData, null);
                break;

            case Command.WriteRequest:
                GXDLMSSNCommandHandler.HandleWriteRequest(Settings, this, data, replyData, null);
                break;

            case Command.GetRequest:
                if (data.Size != 0)
                {
                    GXDLMSLNCommandHandler.HandleGetRequest(Settings, this, data, replyData, null);
                }
                break;

            case Command.ReadRequest:
                GXDLMSSNCommandHandler.HandleReadRequest(Settings, this, data, replyData, null);
                break;

            case Command.MethodRequest:
                GXDLMSLNCommandHandler.HandleMethodRequest(Settings, this, data, connectionInfo, replyData, null);
                break;

            case Command.Snrm:
                HandleSnrmRequest();
                frame = (byte)Command.Ua;
                break;

            case Command.Aarq:
                HandleAarqRequest(data, connectionInfo);
                break;

            case Command.ReleaseRequest:
            case Command.DisconnectRequest:
                GenerateDisconnectRequest();
                Settings.Connected = false;
                Disconnected(connectionInfo);
                frame = (byte)Command.Ua;
                break;

            case Command.None:
                //Get next frame.
                break;

            default:
                Debug.WriteLine("Invalid command: " + (int)cmd);
                break;
            }
            byte[] reply;
            if (this.InterfaceType == Enums.InterfaceType.WRAPPER)
            {
                reply = GXDLMS.GetWrapperFrame(Settings, replyData);
            }
            else
            {
                reply = GXDLMS.GetHdlcFrame(Settings, frame, replyData);
            }
            return(reply);
        }