public override void ParsePacketContent(MySqlStreamReader r)
        {

            if (protocol41)
            {
                catalog = r.ReadLengthCodedString();//3,100,101,102,103  (always "def")
                schema = r.ReadLengthCodedString();
                table = r.ReadLengthCodedString();
                orgTable = r.ReadLengthCodedString();
                name = r.ReadLengthCodedString();
                orgName = r.ReadLengthCodedString();

                //next_length (lenenc_int) -- length of the following fields (always 0x0c)  ***
                uint lengthCodedNumber = r.ReadLengthCodedNumber();
                if (lengthCodedNumber != 0x0c)
                {

                    //var err  = new TypeError('Received invalid field length');
                    //err.code = 'PARSER_INVALID_FIELD_LENGTH';
                    //throw err;
#if DEBUG
                    if (lengthCodedNumber == 0)
                    {
                        //error
                        //this package is error packet 
                        //server may send the correct one?
                        dbugFailure = true;
                        return;
                    }
#endif
                    throw new Exception("Received invalid field length");
                }

                charsetNr = r.U2();//2
                maxLengthOfField = r.U4();//4
                columnType = r.ReadByte();//1
                flags = r.U2();//2
                maxShownDecimalDigits = r.ReadByte();
                filler = r.ReadBuffer(2);
                if (filler[0] != 0x0 || filler[1] != 0x0)
                {
                    //var err  = new TypeError('Received invalid filler');
                    //err.code = 'PARSER_INVALID_FILLER';
                    //throw err;
                    throw new Exception("Received invalid filler");
                }
                // parsed flags
                //this.zeroFill = (this.flags & 0x0040 ? true : false);
                zeroFill = ((flags & 0x0040) == 0x0040 ? true : false);
                if (r.ReachedPacketEnd())
                {
                    return;
                }
                //----
                //if command was COM_FIELD_LIST {
                //   lenenc_int length of default- values
                //string[$len]   default values
                //}
                strDefault = r.ReadLengthCodedString();
            }
            else
            {
                table = r.ReadLengthCodedString();
                name = r.ReadLengthCodedString();
                maxLengthOfField = r.ReadUnsigedNumber(r.ReadByte());
                columnType = (int)r.ReadUnsigedNumber(r.ReadByte());
            }
        }
        public override void ParsePacketContent(MySqlStreamReader r)
        {

            _fieldCount = r.ReadLengthCodedNumber();
            if (r.ReachedPacketEnd())
            {
                return;
            }
            if (_fieldCount == 0)
            {
                _extraStr = r.ReadPacketTerminatedString();
            }
            else
            {
                _extraNumber = r.ReadLengthCodedNumber();
                _extraStr = r.ReadPacketTerminatedString();//null;
            }
        }