联通sgip1.2 socket提交信息体由主机字节转为网络字节产生地址越界,该怎么解决

        public uint MessageLength
        {
            get
            {
                return (uint)IPAddress.NetworkToHostOrder((int)_messageLength);
            }
            set
            {
                _messageLength = (uint)IPAddress.HostToNetworkOrder((int)value);
            }
        }

public byte[] GetBytes()
        {
            byte[] result = new byte[this.GetLength()];
         

            Buffer.BlockCopy(_head.GetBytes(), 0, result, 0, _head.GetLength());
            Buffer.BlockCopy(_body.GetBytes(), 0, result, _head.GetLength(), _body.GetLength());
            return result;
        }