RE: [Quickfix-developers] bad checksum on repeating groups

[Brian M. <bri...@ro...>]

Thanks Rich, I included the non-standard field in my data dictionary and
it worked.  Boy, does QF take the round-about way to compute the
checksum!

Brian

-----Original Message-----
From: Rich Holm [mailto:rh...@ql...]=20
Sent: Friday, September 09, 2005 11:00 PM
To: Brian McAndrews
Cc: qui...@li...
Subject: Re: [Quickfix-developers] bad checksum on repeating groups


I had this problem... the cause was not having a correct specification=20
in my data dictionary.
Are you using a data dictionary?

Cheers,
Rich


Brian McAndrews wrote:

> We are get a quote acknowledgement (35=3Db) message and quickfix =
appears

> to be calculating the checksum incorrectly. It appears that the=20
> checksum is always the number of quote entries - 1 off from what the=20
> checksum should be. Here's an example message:
>
>
8=3DFIX.4.29=3D044935=3Db34=3D54349=3DAFIX20256=3DRNS52=3D20050908-16:44:=
37117=3DQU_VLO2
97=3D0300=3D0336=3DW_MAIN296=3D1302=3D1311=3DVLO304=3D4295=3D4299=3DQU_16=
25819#VLO#2005#9#
80#155=3DVLO167=3DOPT200=3D200509201=3D1202=3D80368=3D09006=3D0299=3DQU_1=
625832#VLO#2005
#9#85#155=3DVLO167=3DOPT200=3D200509201=3D1202=3D85368=3D09006=3D0299=3DQ=
U_1674687#VLO#2
005#9#90#155=3DVLO167=3DOPT200=3D200509201=3D1202=3D90368=3D09006=3D0299=3D=
QU_1838502#VL
O#2005#9#95#155=3DVLO167=3DOPT200=3D200509201=3D1202=3D95368=3D09006=3D01=
0=3D101
>
> Here, 4 quote entries are being acked however the quickfix event log=20
> shows the computed check sum to be 98 instead of 101. One thing=20
> unusual here is the user defined 9006 tag in each of the quote=20
> entries. In stepping through the debugger, I noticed those tags=20
> checksums being computed outside of the field group.
>
> Any help would be appreciated.
>
> Thanks,
>
> Brian McAndrews
>