[Quickfix-users] Debugging help needed - checksums are off

[Jonathan A. <ja...@fi...>]

I am having a problem with checksums being off. As you can see from my
log snippet, they seem to be consistently off by +20. 

 

My partner company is not using QuickFix, though I don't know what they
are using. Recently they added a couple of stipulations, but that is
just a repeating group whose fields we already know. 

 

1. What can cause this besides them sending me the wrong checksum?

2. Is there a way to calculate the checksums by hand?

3. Is there a history of different FIX engines calculating the checksum
differently?

 

20080516-22:07:34 : Invalid message: Expected CheckSum=34, Recieved
CheckSum=54

20080516-22:07:34 : Invalid message: Expected CheckSum=201, Recieved
CheckSum=221

20080516-22:07:34 : Invalid message: Expected CheckSum=35, Recieved
CheckSum=55

20080516-22:07:34 : Invalid message: Expected CheckSum=169, Recieved
CheckSum=189

20080516-22:07:34 : Invalid message: Expected CheckSum=47, Recieved
CheckSum=67

20080516-22:07:34 : Invalid message: Expected CheckSum=204, Recieved
CheckSum=224

20080516-22:07:34 : Invalid message: Expected CheckSum=151, Recieved
CheckSum=171

20080516-22:07:35 : Invalid message: Expected CheckSum=148, Recieved
CheckSum=168

20080516-22:07:35 : Invalid message: Expected CheckSum=212, Recieved
CheckSum=232

20080516-22:07:35 : Invalid message: Expected CheckSum=216, Recieved
CheckSum=236

20080516-22:07:35 : Invalid message: Expected CheckSum=238, Recieved
CheckSum=2

20080516-22:07:35 : Invalid message: Expected CheckSum=28, Recieved
CheckSum=48

20080516-22:07:35 : Invalid message: Expected CheckSum=226, Recieved
CheckSum=246

20080516-22:07:35 : Invalid message: Expected CheckSum=72, Recieved
CheckSum=92

20080516-22:07:35 : Invalid message: Expected CheckSum=205, Recieved
CheckSum=225

20080516-22:07:35 : Invalid message: Expected CheckSum=84, Recieved
CheckSum=104

20080516-22:07:35 : Invalid message: Expected CheckSum=200, Recieved
CheckSum=220

20080516-22:07:35 : Invalid message: Expected CheckSum=59, Recieved
CheckSum=79

20080516-22:07:35 : Invalid message: Expected CheckSum=183, Recieved
CheckSum=203

20080516-22:07:35 : Invalid message: Expected CheckSum=245, Recieved
CheckSum=9

20080516-22:07:35 : Invalid message: Expected CheckSum=67, Recieved
CheckSum=87

20080516-22:07:35 : Invalid message: Expected CheckSum=45, Recieved
CheckSum=65

20080516-22:07:35 : Invalid message: Expected CheckSum=196, Recieved
CheckSum=216

20080516-22:07:35 : Invalid message: Expected CheckSum=218, Recieved
CheckSum=238

20080516-22:07:35 : Invalid message: Expected CheckSum=18, Recieved
CheckSum=38

20080516-22:07:35 : Invalid message: Expected CheckSum=237, Recieved
CheckSum=1

20080516-22:07:35 : Invalid message: Expected CheckSum=123, Recieved
CheckSum=143

20080516-22:07:35 : Invalid message: Expected CheckSum=93, Recieved
CheckSum=113

 

Jonathan Allen

Software Developer

Fixed Income Securities, Inc.

858-547-7731

7720 Trade Street, Suite 310

San Diego, CA 92121

www.fisbonds.com

Member FINRA/SIPC 




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