/// <summary>
 /// to decode the smb data: from the general SmbDada to the concrete Smb Data.
 /// </summary>
 protected override void DecodeData()
 {
     this.smbData = TypeMarshal.ToStruct<SMB_COM_NEGOTIATE_Request_SMB_Data>(
         TypeMarshal.ToBytes(this.smbDataBlock));
 }
        /// <summary>
        /// to create a Negotiate 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="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="dialects">This is a variable length list of dialect identifiers in order of preference from
        /// least to most preferred</param>
        /// <returns>a Negotiate request packet</returns>
        public SmbNegotiateRequestPacket CreateNegotiateRequest(
            ushort messageId,
            SmbFlags flags,
            SmbFlags2 flags2,
            SMB_Dialect[] dialects)
        {
            if (dialects == null)
            {
                dialects = new SMB_Dialect[0];
            }

            SmbNegotiateRequestPacket packet = new SmbNegotiateRequestPacket();

            packet.SmbHeader = CifsMessageUtils.CreateSmbHeader(SmbCommand.SMB_COM_NEGOTIATE,
                messageId, 0, 0, flags, flags2);

            SMB_COM_NEGOTIATE_Request_SMB_Parameters smbParameters = new SMB_COM_NEGOTIATE_Request_SMB_Parameters();
            smbParameters.WordCount = 0;

            SMB_COM_NEGOTIATE_Request_SMB_Data smbData = new SMB_COM_NEGOTIATE_Request_SMB_Data();
            List<byte> list = new List<byte>();
            foreach (SMB_Dialect dialect in dialects)
            {
                list.Add(dialect.BufferFormat);
                list.AddRange(CifsMessageUtils.ToSmbStringBytes(dialect.DialectString, false));
            }
            smbData.Dialects = list.ToArray();
            smbData.ByteCount = (ushort)(smbData.Dialects.Length);

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

            return packet;
        }