Esempio n. 1
0
        private void ProcessFrame(short ver, short msg_type, int msg_id, byte[] data)
        {
            int cursor = 0;

            switch (msg_type)
            {
            case 61:
                try
                {
                    BitArray bitArray = Util.ConvertByteArrayToBitArray(data);
                    int      count    = bitArray.Count;
                    this.notificationQueue.Enqueue((object)MSG_RO_ACCESS_REPORT.FromBitArray(ref bitArray, ref cursor, count));
                    break;
                }
                catch
                {
                    break;
                }

            case 62:
                try
                {
                    BitArray bitArray = Util.ConvertByteArrayToBitArray(data);
                    int      count    = bitArray.Count;
                    this.notificationQueue.Enqueue((object)MSG_KEEPALIVE.FromBitArray(ref bitArray, ref cursor, count));
                    break;
                }
                catch
                {
                    break;
                }

            case 63:
                try
                {
                    BitArray bitArray = Util.ConvertByteArrayToBitArray(data);
                    int      count    = bitArray.Count;
                    MSG_READER_EVENT_NOTIFICATION eventNotification = MSG_READER_EVENT_NOTIFICATION.FromBitArray(ref bitArray, ref cursor, count);
                    if (this.conn_evt != null && eventNotification.ReaderEventNotificationData.ConnectionAttemptEvent != null)
                    {
                        this.conn_status_type = eventNotification.ReaderEventNotificationData.ConnectionAttemptEvent.Status;
                        this.conn_evt.Set();
                        break;
                    }
                    this.notificationQueue.Enqueue((object)eventNotification);
                    break;
                }
                catch
                {
                    break;
                }
            }
        }
Esempio n. 2
0
 protected void TriggerKeepAlive(MSG_KEEPALIVE msg)
 {
     if (this.OnKeepAlive != null)
     {
         this.OnKeepAlive(msg);
     }
     if (this.OnEncapedKeepAlive == null)
     {
         return;
     }
     this.OnEncapedKeepAlive(new ENCAPED_KEEP_ALIVE()
     {
         reader     = this.reader_name,
         keep_alive = msg
     });
 }
Esempio n. 3
0
        public static MSG_KEEPALIVE FromString(string str)
        {
            XmlDocument xmlDocument = new XmlDocument();

            xmlDocument.LoadXml(str);
            XmlNode             documentElement  = (XmlNode)xmlDocument.DocumentElement;
            XmlNamespaceManager namespaceManager = new XmlNamespaceManager(documentElement.OwnerDocument.NameTable);

            namespaceManager.AddNamespace("", "http://www.llrp.org/ltk/schema/core/encoding/xml/1.0");
            namespaceManager.AddNamespace("llrp", "http://www.llrp.org/ltk/schema/core/encoding/xml/1.0");
            MSG_KEEPALIVE msgKeepalive = new MSG_KEEPALIVE();

            try
            {
                msgKeepalive.MSG_ID = Convert.ToUInt32(XmlUtil.GetNodeAttrValue(documentElement, "MessageID"));
            }
            catch
            {
            }
            return(msgKeepalive);
        }
Esempio n. 4
0
        public static MSG_KEEPALIVE FromBitArray(
            ref BitArray bit_array,
            ref int cursor,
            int length)
        {
            if (cursor > length)
            {
                return((MSG_KEEPALIVE)null);
            }
            ArrayList     arrayList    = new ArrayList();
            MSG_KEEPALIVE msgKeepalive = new MSG_KEEPALIVE();

            cursor += 6;
            if ((int)(ulong)Util.CalculateVal(ref bit_array, ref cursor, 10) != (int)msgKeepalive.msgType)
            {
                cursor -= 16;
                return((MSG_KEEPALIVE)null);
            }
            msgKeepalive.msgLen = (uint)(ulong)Util.CalculateVal(ref bit_array, ref cursor, 32);
            msgKeepalive.msgID  = (uint)(ulong)Util.CalculateVal(ref bit_array, ref cursor, 32);
            return(msgKeepalive);
        }
Esempio n. 5
0
        /// <summary>
        /// Decode Binary LLRP packet to LLRP message object
        /// </summary>
        /// <param name="packet">Binary LLRP packet to be decoded</param>
        /// <param name="msg">LLRP message. output</param>
        public static void Decode(ref byte [] packet, out Message msg)
        {
            LLRP_Envelope env;

            Decode_Envelope(packet, out env);

            BitArray ba     = Util.ConvertByteArrayToBitArray(packet);
            int      cursor = 0;

            switch (env.msg_type)
            {
            case ENUM_LLRP_MSG_TYPE.CUSTOM_MESSAGE:
                msg = MSG_CUSTOM_MESSAGE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.GET_READER_CAPABILITIES:
                msg = MSG_GET_READER_CAPABILITIES.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.GET_READER_CAPABILITIES_RESPONSE:
                msg = MSG_GET_READER_CAPABILITIES_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.ADD_ROSPEC:
                msg = MSG_ADD_ROSPEC.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.ADD_ROSPEC_RESPONSE:
                msg = MSG_ADD_ROSPEC_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.DELETE_ROSPEC:
                msg = MSG_DELETE_ROSPEC.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.DELETE_ROSPEC_RESPONSE:
                msg = MSG_DELETE_ROSPEC_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.START_ROSPEC:
                msg = MSG_START_ROSPEC.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.START_ROSPEC_RESPONSE:
                msg = MSG_START_ROSPEC_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.STOP_ROSPEC:
                msg = MSG_STOP_ROSPEC.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.STOP_ROSPEC_RESPONSE:
                msg = MSG_STOP_ROSPEC_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.ENABLE_ROSPEC:
                msg = MSG_ENABLE_ROSPEC.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.ENABLE_ROSPEC_RESPONSE:
                msg = MSG_ENABLE_ROSPEC_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.DISABLE_ROSPEC:
                msg = MSG_DISABLE_ROSPEC.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.DISABLE_ROSPEC_RESPONSE:
                msg = MSG_DISABLE_ROSPEC_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.GET_ROSPECS:
                msg = MSG_GET_ROSPECS.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.GET_ROSPECS_RESPONSE:
                msg = MSG_GET_ROSPECS_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.ADD_ACCESSSPEC:
                msg = MSG_ADD_ACCESSSPEC.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.ADD_ACCESSSPEC_RESPONSE:
                msg = MSG_ADD_ACCESSSPEC_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.DELETE_ACCESSSPEC:
                msg = MSG_DELETE_ACCESSSPEC.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.DELETE_ACCESSSPEC_RESPONSE:
                msg = MSG_DELETE_ACCESSSPEC_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.ENABLE_ACCESSSPEC:
                msg = MSG_ENABLE_ACCESSSPEC.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.ENABLE_ACCESSSPEC_RESPONSE:
                msg = MSG_ENABLE_ACCESSSPEC_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.DISABLE_ACCESSSPEC:
                msg = MSG_DISABLE_ACCESSSPEC.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.DISABLE_ACCESSSPEC_RESPONSE:
                msg = MSG_DISABLE_ACCESSSPEC_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.GET_ACCESSSPECS:
                msg = MSG_GET_ACCESSSPECS.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.GET_ACCESSSPECS_RESPONSE:
                msg = MSG_GET_ACCESSSPECS_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.GET_READER_CONFIG:
                msg = MSG_GET_READER_CONFIG.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.GET_READER_CONFIG_RESPONSE:
                msg = MSG_GET_READER_CONFIG_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.SET_READER_CONFIG:
                msg = MSG_SET_READER_CONFIG.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.SET_READER_CONFIG_RESPONSE:
                msg = MSG_SET_READER_CONFIG_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.CLOSE_CONNECTION:
                msg = MSG_CLOSE_CONNECTION.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.CLOSE_CONNECTION_RESPONSE:
                msg = MSG_CLOSE_CONNECTION_RESPONSE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.GET_REPORT:
                msg = MSG_GET_REPORT.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.RO_ACCESS_REPORT:
                msg = MSG_RO_ACCESS_REPORT.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.KEEPALIVE:
                msg = MSG_KEEPALIVE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.KEEPALIVE_ACK:
                msg = MSG_KEEPALIVE_ACK.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.READER_EVENT_NOTIFICATION:
                msg = MSG_READER_EVENT_NOTIFICATION.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.ENABLE_EVENTS_AND_REPORTS:
                msg = MSG_ENABLE_EVENTS_AND_REPORTS.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            case ENUM_LLRP_MSG_TYPE.ERROR_MESSAGE:
                msg = MSG_ERROR_MESSAGE.FromBitArray(ref ba, ref cursor, (int)(env.msg_len * 8));
                return;

            default:
                throw new MalformedPacket("Unrecognized message " + env.msg_type);
            }
        }
Esempio n. 6
0
        /// <summary>
        /// Parse XML string to LLRP message
        /// </summary>
        /// <param name="xmlstr">XML string to be parsed.</param>
        /// <param name="msg">LLRP message. output</param>
        /// <param name="type">LLRP message type. output</param>
        public static void ParseXMLToLLRPMessage(string xmlstr, out Message msg, out ENUM_LLRP_MSG_TYPE type)
        {
            XmlDocument xdoc = new XmlDocument();

            xdoc.LoadXml(xmlstr);
            XmlNode node = (XmlNode)xdoc.DocumentElement;

            switch (node.Name)
            {
            case "CUSTOM_MESSAGE":
                msg  = (Message)MSG_CUSTOM_MESSAGE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.CUSTOM_MESSAGE;
                return;

            case "GET_READER_CAPABILITIES":
                msg  = (Message)MSG_GET_READER_CAPABILITIES.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_READER_CAPABILITIES;
                return;

            case "GET_READER_CAPABILITIES_RESPONSE":
                msg  = (Message)MSG_GET_READER_CAPABILITIES_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_READER_CAPABILITIES_RESPONSE;
                return;

            case "ADD_ROSPEC":
                msg  = (Message)MSG_ADD_ROSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ADD_ROSPEC;
                return;

            case "ADD_ROSPEC_RESPONSE":
                msg  = (Message)MSG_ADD_ROSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ADD_ROSPEC_RESPONSE;
                return;

            case "DELETE_ROSPEC":
                msg  = (Message)MSG_DELETE_ROSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DELETE_ROSPEC;
                return;

            case "DELETE_ROSPEC_RESPONSE":
                msg  = (Message)MSG_DELETE_ROSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DELETE_ROSPEC_RESPONSE;
                return;

            case "START_ROSPEC":
                msg  = (Message)MSG_START_ROSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.START_ROSPEC;
                return;

            case "START_ROSPEC_RESPONSE":
                msg  = (Message)MSG_START_ROSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.START_ROSPEC_RESPONSE;
                return;

            case "STOP_ROSPEC":
                msg  = (Message)MSG_STOP_ROSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.STOP_ROSPEC;
                return;

            case "STOP_ROSPEC_RESPONSE":
                msg  = (Message)MSG_STOP_ROSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.STOP_ROSPEC_RESPONSE;
                return;

            case "ENABLE_ROSPEC":
                msg  = (Message)MSG_ENABLE_ROSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ENABLE_ROSPEC;
                return;

            case "ENABLE_ROSPEC_RESPONSE":
                msg  = (Message)MSG_ENABLE_ROSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ENABLE_ROSPEC_RESPONSE;
                return;

            case "DISABLE_ROSPEC":
                msg  = (Message)MSG_DISABLE_ROSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DISABLE_ROSPEC;
                return;

            case "DISABLE_ROSPEC_RESPONSE":
                msg  = (Message)MSG_DISABLE_ROSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DISABLE_ROSPEC_RESPONSE;
                return;

            case "GET_ROSPECS":
                msg  = (Message)MSG_GET_ROSPECS.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_ROSPECS;
                return;

            case "GET_ROSPECS_RESPONSE":
                msg  = (Message)MSG_GET_ROSPECS_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_ROSPECS_RESPONSE;
                return;

            case "ADD_ACCESSSPEC":
                msg  = (Message)MSG_ADD_ACCESSSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ADD_ACCESSSPEC;
                return;

            case "ADD_ACCESSSPEC_RESPONSE":
                msg  = (Message)MSG_ADD_ACCESSSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ADD_ACCESSSPEC_RESPONSE;
                return;

            case "DELETE_ACCESSSPEC":
                msg  = (Message)MSG_DELETE_ACCESSSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DELETE_ACCESSSPEC;
                return;

            case "DELETE_ACCESSSPEC_RESPONSE":
                msg  = (Message)MSG_DELETE_ACCESSSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DELETE_ACCESSSPEC_RESPONSE;
                return;

            case "ENABLE_ACCESSSPEC":
                msg  = (Message)MSG_ENABLE_ACCESSSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ENABLE_ACCESSSPEC;
                return;

            case "ENABLE_ACCESSSPEC_RESPONSE":
                msg  = (Message)MSG_ENABLE_ACCESSSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ENABLE_ACCESSSPEC_RESPONSE;
                return;

            case "DISABLE_ACCESSSPEC":
                msg  = (Message)MSG_DISABLE_ACCESSSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DISABLE_ACCESSSPEC;
                return;

            case "DISABLE_ACCESSSPEC_RESPONSE":
                msg  = (Message)MSG_DISABLE_ACCESSSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DISABLE_ACCESSSPEC_RESPONSE;
                return;

            case "GET_ACCESSSPECS":
                msg  = (Message)MSG_GET_ACCESSSPECS.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_ACCESSSPECS;
                return;

            case "GET_ACCESSSPECS_RESPONSE":
                msg  = (Message)MSG_GET_ACCESSSPECS_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_ACCESSSPECS_RESPONSE;
                return;

            case "GET_READER_CONFIG":
                msg  = (Message)MSG_GET_READER_CONFIG.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_READER_CONFIG;
                return;

            case "GET_READER_CONFIG_RESPONSE":
                msg  = (Message)MSG_GET_READER_CONFIG_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_READER_CONFIG_RESPONSE;
                return;

            case "SET_READER_CONFIG":
                msg  = (Message)MSG_SET_READER_CONFIG.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.SET_READER_CONFIG;
                return;

            case "SET_READER_CONFIG_RESPONSE":
                msg  = (Message)MSG_SET_READER_CONFIG_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.SET_READER_CONFIG_RESPONSE;
                return;

            case "CLOSE_CONNECTION":
                msg  = (Message)MSG_CLOSE_CONNECTION.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.CLOSE_CONNECTION;
                return;

            case "CLOSE_CONNECTION_RESPONSE":
                msg  = (Message)MSG_CLOSE_CONNECTION_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.CLOSE_CONNECTION_RESPONSE;
                return;

            case "GET_REPORT":
                msg  = (Message)MSG_GET_REPORT.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_REPORT;
                return;

            case "RO_ACCESS_REPORT":
                msg  = (Message)MSG_RO_ACCESS_REPORT.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.RO_ACCESS_REPORT;
                return;

            case "KEEPALIVE":
                msg  = (Message)MSG_KEEPALIVE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.KEEPALIVE;
                return;

            case "KEEPALIVE_ACK":
                msg  = (Message)MSG_KEEPALIVE_ACK.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.KEEPALIVE_ACK;
                return;

            case "READER_EVENT_NOTIFICATION":
                msg  = (Message)MSG_READER_EVENT_NOTIFICATION.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.READER_EVENT_NOTIFICATION;
                return;

            case "ENABLE_EVENTS_AND_REPORTS":
                msg  = (Message)MSG_ENABLE_EVENTS_AND_REPORTS.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ENABLE_EVENTS_AND_REPORTS;
                return;

            case "ERROR_MESSAGE":
                msg  = (Message)MSG_ERROR_MESSAGE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ERROR_MESSAGE;
                return;

            default:
                msg  = null;
                type = 0;
                return;
            }
        }
Esempio n. 7
0
        public static void ParseXMLToLLRPMessage(
            string xmlstr,
            out Message msg,
            out ENUM_LLRP_MSG_TYPE type)
        {
            XmlDocument xmlDocument = new XmlDocument();

            xmlDocument.LoadXml(xmlstr);
            XmlNode documentElement = (XmlNode)xmlDocument.DocumentElement;

            switch (documentElement.Name)
            {
            case "CUSTOM_MESSAGE":
                msg  = (Message)MSG_CUSTOM_MESSAGE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.CUSTOM_MESSAGE;
                break;

            case "GET_READER_CAPABILITIES":
                msg  = (Message)MSG_GET_READER_CAPABILITIES.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_READER_CAPABILITIES;
                break;

            case "GET_READER_CAPABILITIES_RESPONSE":
                msg  = (Message)MSG_GET_READER_CAPABILITIES_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_READER_CAPABILITIES_RESPONSE;
                break;

            case "ADD_ROSPEC":
                msg  = (Message)MSG_ADD_ROSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ADD_ROSPEC;
                break;

            case "ADD_ROSPEC_RESPONSE":
                msg  = (Message)MSG_ADD_ROSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ADD_ROSPEC_RESPONSE;
                break;

            case "DELETE_ROSPEC":
                msg  = (Message)MSG_DELETE_ROSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DELETE_ROSPEC;
                break;

            case "DELETE_ROSPEC_RESPONSE":
                msg  = (Message)MSG_DELETE_ROSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DELETE_ROSPEC_RESPONSE;
                break;

            case "START_ROSPEC":
                msg  = (Message)MSG_START_ROSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.START_ROSPEC;
                break;

            case "START_ROSPEC_RESPONSE":
                msg  = (Message)MSG_START_ROSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.START_ROSPEC_RESPONSE;
                break;

            case "STOP_ROSPEC":
                msg  = (Message)MSG_STOP_ROSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.STOP_ROSPEC;
                break;

            case "STOP_ROSPEC_RESPONSE":
                msg  = (Message)MSG_STOP_ROSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.STOP_ROSPEC_RESPONSE;
                break;

            case "ENABLE_ROSPEC":
                msg  = (Message)MSG_ENABLE_ROSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ENABLE_ROSPEC;
                break;

            case "ENABLE_ROSPEC_RESPONSE":
                msg  = (Message)MSG_ENABLE_ROSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ENABLE_ROSPEC_RESPONSE;
                break;

            case "DISABLE_ROSPEC":
                msg  = (Message)MSG_DISABLE_ROSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DISABLE_ROSPEC;
                break;

            case "DISABLE_ROSPEC_RESPONSE":
                msg  = (Message)MSG_DISABLE_ROSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DISABLE_ROSPEC_RESPONSE;
                break;

            case "GET_ROSPECS":
                msg  = (Message)MSG_GET_ROSPECS.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_ROSPECS;
                break;

            case "GET_ROSPECS_RESPONSE":
                msg  = (Message)MSG_GET_ROSPECS_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_ROSPECS_RESPONSE;
                break;

            case "ADD_ACCESSSPEC":
                msg  = (Message)MSG_ADD_ACCESSSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ADD_ACCESSSPEC;
                break;

            case "ADD_ACCESSSPEC_RESPONSE":
                msg  = (Message)MSG_ADD_ACCESSSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ADD_ACCESSSPEC_RESPONSE;
                break;

            case "DELETE_ACCESSSPEC":
                msg  = (Message)MSG_DELETE_ACCESSSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DELETE_ACCESSSPEC;
                break;

            case "DELETE_ACCESSSPEC_RESPONSE":
                msg  = (Message)MSG_DELETE_ACCESSSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DELETE_ACCESSSPEC_RESPONSE;
                break;

            case "ENABLE_ACCESSSPEC":
                msg  = (Message)MSG_ENABLE_ACCESSSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ENABLE_ACCESSSPEC;
                break;

            case "ENABLE_ACCESSSPEC_RESPONSE":
                msg  = (Message)MSG_ENABLE_ACCESSSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ENABLE_ACCESSSPEC_RESPONSE;
                break;

            case "DISABLE_ACCESSSPEC":
                msg  = (Message)MSG_DISABLE_ACCESSSPEC.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DISABLE_ACCESSSPEC;
                break;

            case "DISABLE_ACCESSSPEC_RESPONSE":
                msg  = (Message)MSG_DISABLE_ACCESSSPEC_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.DISABLE_ACCESSSPEC_RESPONSE;
                break;

            case "GET_ACCESSSPECS":
                msg  = (Message)MSG_GET_ACCESSSPECS.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_ACCESSSPECS;
                break;

            case "GET_ACCESSSPECS_RESPONSE":
                msg  = (Message)MSG_GET_ACCESSSPECS_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_ACCESSSPECS_RESPONSE;
                break;

            case "GET_READER_CONFIG":
                msg  = (Message)MSG_GET_READER_CONFIG.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_READER_CONFIG;
                break;

            case "GET_READER_CONFIG_RESPONSE":
                msg  = (Message)MSG_GET_READER_CONFIG_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_READER_CONFIG_RESPONSE;
                break;

            case "SET_READER_CONFIG":
                msg  = (Message)MSG_SET_READER_CONFIG.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.SET_READER_CONFIG;
                break;

            case "SET_READER_CONFIG_RESPONSE":
                msg  = (Message)MSG_SET_READER_CONFIG_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.SET_READER_CONFIG_RESPONSE;
                break;

            case "CLOSE_CONNECTION":
                msg  = (Message)MSG_CLOSE_CONNECTION.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.CLOSE_CONNECTION;
                break;

            case "CLOSE_CONNECTION_RESPONSE":
                msg  = (Message)MSG_CLOSE_CONNECTION_RESPONSE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.CLOSE_CONNECTION_RESPONSE;
                break;

            case "GET_REPORT":
                msg  = (Message)MSG_GET_REPORT.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.GET_REPORT;
                break;

            case "RO_ACCESS_REPORT":
                msg  = (Message)MSG_RO_ACCESS_REPORT.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.RO_ACCESS_REPORT;
                break;

            case "KEEPALIVE":
                msg  = (Message)MSG_KEEPALIVE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.KEEPALIVE;
                break;

            case "KEEPALIVE_ACK":
                msg  = (Message)MSG_KEEPALIVE_ACK.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.KEEPALIVE_ACK;
                break;

            case "READER_EVENT_NOTIFICATION":
                msg  = (Message)MSG_READER_EVENT_NOTIFICATION.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.READER_EVENT_NOTIFICATION;
                break;

            case "ENABLE_EVENTS_AND_REPORTS":
                msg  = (Message)MSG_ENABLE_EVENTS_AND_REPORTS.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ENABLE_EVENTS_AND_REPORTS;
                break;

            case "ERROR_MESSAGE":
                msg  = (Message)MSG_ERROR_MESSAGE.FromString(xmlstr);
                type = ENUM_LLRP_MSG_TYPE.ERROR_MESSAGE;
                break;

            default:
                type = (ENUM_LLRP_MSG_TYPE)0;
                msg  = (Message)CustomMsgDecodeFactory.DecodeXmlNodeToCustomMessage(documentElement, xmlstr);
                if (msg == null)
                {
                    break;
                }
                type = ENUM_LLRP_MSG_TYPE.CUSTOM_MESSAGE;
                break;
            }
        }