/// <summary>
        /// to create a ReadRaw 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="fid">This field MUST be a valid 16-bit signed integer indicating the file from which the data
        /// MUST be read.</param>
        /// <param name="offset">The offset in bytes from the start of the file at which the read MUST begin. This is
        /// the lower 32 bits of a 64 bit value if the WordCount is 10</param>
        /// <param name="maxCountOfBytesToReturn">The requested maximum number of bytes to read from the file and
        /// return to the client. The value MAY exceed the negotiated buffer size</param>
        /// <param name="minCountOfBytesToReturn">The requested minimum number of bytes to read from the file and
        /// return to the client. This field is used only when reading from a named pipe or a device. It is ignored
        /// when reading from a standard file</param>
        /// <param name="timeout">Support for this field is optional and this field is used only when reading from a
        /// named pipe or i/o device.</param>
        /// <param name="offsetHigh">the upper 32 bits of the offset in bytes from the start of the file at which
        /// the read MUST start.</param>
        /// <returns>a ReadRaw request packet</returns>
        public SmbReadRawRequestPacket CreateReadRawRequest(
            ushort messageId,
            ushort uid,
            ushort treeId,
            SmbFlags flags,
            SmbFlags2 flags2,
            ushort fid,
            uint offset,
            ushort maxCountOfBytesToReturn,
            ushort minCountOfBytesToReturn,
            uint timeout,
            uint offsetHigh)
        {
            SmbReadRawRequestPacket packet = new SmbReadRawRequestPacket();

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

            SMB_COM_READ_RAW_Request_SMB_Parameters smbParameters = new SMB_COM_READ_RAW_Request_SMB_Parameters();
            smbParameters.FID = fid;
            smbParameters.Offset = offset;
            smbParameters.MaxCountOfBytesToReturn = maxCountOfBytesToReturn;
            smbParameters.MinCountOfBytesToReturn = minCountOfBytesToReturn;
            smbParameters.Timeout = timeout;
            smbParameters.Reserved = 0;
            smbParameters.OffsetHigh = offsetHigh;
            smbParameters.WordCount = (byte)(Marshal.SizeOf(smbParameters) / NumBytesOfWord);

            SMB_COM_READ_RAW_Request_SMB_Data smbData = new SMB_COM_READ_RAW_Request_SMB_Data();
            smbData.ByteCount = 0;

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

            return packet;
        }
 /// <summary>
 /// to decode the smb parameters: from the general SmbParameters to the concrete Smb Parameters.
 /// </summary>
 protected override void DecodeParameters()
 {
     this.smbParameters = TypeMarshal.ToStruct<SMB_COM_READ_RAW_Request_SMB_Parameters>(
         TypeMarshal.ToBytes(this.smbParametersBlock));
 }