/// <summary>
        /// Deep copy constructor.
        /// </summary>
        public SmbSetInformationRequestPacket(SmbSetInformationRequestPacket packet)
            : base(packet)
        {
            this.InitDefaultValue();

            this.smbParameters.WordCount = packet.SmbParameters.WordCount;
            this.smbParameters.FileAttributes = packet.SmbParameters.FileAttributes;
            this.smbParameters.LastWriteTime = new UTime();
            this.smbParameters.LastWriteTime.Time = packet.SmbParameters.LastWriteTime.Time;

            if (packet.smbParameters.Reserved != null)
            {
                this.smbParameters.Reserved = new ushort[packet.smbParameters.Reserved.Length];
                Array.Copy(packet.smbParameters.Reserved,
                    this.smbParameters.Reserved, packet.smbParameters.Reserved.Length);
            }
            else
            {
                this.smbParameters.Reserved = new ushort[0];
            }

            this.smbData.ByteCount = packet.SmbData.ByteCount;
            this.smbData.BufferFormat = packet.SmbData.BufferFormat;

            if (packet.smbData.FileName != null)
            {
                this.smbData.FileName = new byte[packet.smbData.FileName.Length];
                Array.Copy(packet.smbData.FileName, this.smbData.FileName, packet.smbData.FileName.Length);
            }
            else
            {
                this.smbData.FileName = new byte[0];
            }
        }
        /// <summary>
        /// Deep copy constructor.
        /// </summary>
        public SmbSetInformationRequestPacket(SmbSetInformationRequestPacket packet)
            : base(packet)
        {
            this.InitDefaultValue();

            this.smbParameters.WordCount          = packet.SmbParameters.WordCount;
            this.smbParameters.FileAttributes     = packet.SmbParameters.FileAttributes;
            this.smbParameters.LastWriteTime      = new UTime();
            this.smbParameters.LastWriteTime.Time = packet.SmbParameters.LastWriteTime.Time;

            if (packet.smbParameters.Reserved != null)
            {
                this.smbParameters.Reserved = new ushort[packet.smbParameters.Reserved.Length];
                Array.Copy(packet.smbParameters.Reserved,
                           this.smbParameters.Reserved, packet.smbParameters.Reserved.Length);
            }
            else
            {
                this.smbParameters.Reserved = new ushort[0];
            }

            this.smbData.ByteCount    = packet.SmbData.ByteCount;
            this.smbData.BufferFormat = packet.SmbData.BufferFormat;

            if (packet.smbData.FileName != null)
            {
                this.smbData.FileName = new byte[packet.smbData.FileName.Length];
                Array.Copy(packet.smbData.FileName, this.smbData.FileName, packet.smbData.FileName.Length);
            }
            else
            {
                this.smbData.FileName = new byte[0];
            }
        }
        /// <summary>
        /// to create a SetInformation request packet.
        /// </summary>
        /// <param name="messageId">This field SHOULD be the multiplex ID that is used to associate a response with a
        /// request.</param>
        /// <param name="uid">This field SHOULD identify the authenticated instance of the user.</param>
        /// <param name="treeId">This field identifies the subdirectory (or tree) on the server that the client is
        /// accessing.</param>
        /// <param name="flags">An 8-bit field of 1-bit flags describing various features in effect for the 
        /// message</param>
        /// <param name="flags2">A 16-bit field of 1-bit flags that represent various features in effect for the
        /// message. Unspecified bits are reserved and MUST be zero.</param>
        /// <param name="fileAttributes">This field is a 16 bit unsigned bit field encoded as 
        /// SMB_FILE_ATTRIBUTES</param>
        /// <param name="lastWriteTime">The time of the last write to the file</param>
        /// <param name="fileName">A null-terminated string that represents the fully qualified name of the file 
        /// relative to the supplied TID. This is the file for which attributes are set.</param>
        /// <returns>a SetInformation request packet</returns>
        public SmbSetInformationRequestPacket CreateSetInformationRequest(
            ushort messageId,
            ushort uid,
            ushort treeId,
            SmbFlags flags,
            SmbFlags2 flags2,
            SmbFileAttributes fileAttributes,
            UTime lastWriteTime,
            string fileName)
        {
            if (fileName == null)
            {
                fileName = string.Empty;
            }

            SmbSetInformationRequestPacket packet = new SmbSetInformationRequestPacket();

            packet.SmbHeader = CifsMessageUtils.CreateSmbHeader(SmbCommand.SMB_COM_SET_INFORMATION,
                messageId, uid, treeId, flags, flags2);

            SMB_COM_SET_INFORMATION_Request_SMB_Parameters smbParameters;
            smbParameters = new SMB_COM_SET_INFORMATION_Request_SMB_Parameters();
            smbParameters.FileAttributes = fileAttributes;
            smbParameters.LastWriteTime = lastWriteTime;
            smbParameters.Reserved = new ushort[5]; // the correct length of Reserved word is always 5.
            smbParameters.WordCount = (byte)(CifsMessageUtils.GetSize<SMB_COM_SET_INFORMATION_Request_SMB_Parameters>(
                smbParameters) / NumBytesOfWord);

            SMB_COM_SET_INFORMATION_Request_SMB_Data smbData = new SMB_COM_SET_INFORMATION_Request_SMB_Data();
            smbData.BufferFormat = (byte)DataBufferFormat.SmbString;
            smbData.FileName = CifsMessageUtils.ToSmbStringBytes(fileName,
                (flags2 & SmbFlags2.SMB_FLAGS2_UNICODE) == SmbFlags2.SMB_FLAGS2_UNICODE);
            smbData.ByteCount = (ushort)(Marshal.SizeOf(smbData.BufferFormat) + smbData.FileName.Length);

            packet.SmbParameters = smbParameters;
            packet.SmbData = smbData;

            return packet;
        }
        public SmbSetInformationResponsePacket CreateSetInformationResponse(
            CifsServerPerConnection connection,
            SmbSetInformationRequestPacket request)
        {
            SmbSetInformationResponsePacket response = new SmbSetInformationResponsePacket();
            response.SmbHeader = CifsMessageUtils.CreateSmbHeader(connection, request);

            return response;
        }