Re: [Quickfix-developers] RE: In-Session Logon to Reset SequenceNumber

[Oren M. <or...@qu...>]

Next week.

--oren

Fanshteyn, Timur wrote:

>QuickFIX Documentation: http://www.quickfixengine.org/quickfix/doc/html/index.html
>QuickFIX Support: http://www.quickfixengine.org/services.html
>
>I know there are a lot of changes in CVS. Any idea on the timeframe for
>the next release? 
>
>-----Original Message-----
>From: qui...@li...
>[mailto:qui...@li...] On Behalf Of
>Oren Miller
>Sent: Thursday, January 26, 2006 5:51 PM
>To: Jain, Anil
>Cc: qui...@li...
>Subject: Re: [Quickfix-developers] RE: In-Session Logon to Reset
>SequenceNumber
>
>QuickFIX Documentation:
>http://www.quickfixengine.org/quickfix/doc/html/index.html
>QuickFIX Support: http://www.quickfixengine.org/services.html
>
>Anil,
>
>There is a fix for this that will be going out with the next release (or
>in CVS if you are adventurous).  Please try it again at that time and
>let us know if it works correctly.
>
>--oren
>
>Jain, Anil wrote:
>
>  
>
>>Hi Oren,
>>
>>Today while attempting an In-session logon to CME to reset sequence 
>>numbers to (1,1), the QuickFIX engine logged itself out with the
>>    
>>
>message:
>  
>
>>MsgSeqNum too low, expecting 2 but received 1
>>
>>I found that the problem comes when a /sequence reset logon/ is being 
>>sent, and just before it, QuickFIX engine receives a /test request/ by
>>    
>>
>
>  
>
>>the exchange.
>>
>>At logon reset request , QuickFIX engine resets the exchange sequence 
>>number to 1 ( And not when the exchange accepts the reset and sends a
>>conformation!)
>>
>>So, after request has been made, and before a response to it has been 
>>received, the QuickFIX engine immediately processes the exchange's 
>>earlier /test request/ by sending a heartbeat and increases the 
>>exchange sequence number to 2 *(:`(*. The fact is that the test 
>>request was made under previous logon regime, with different sequence 
>>number. And the sequence number being incremented is unrelated to the 
>>previous one.
>>
>>When the logon reset conformation from exchange comes, the sequence 
>>number has already been increased to 2 - invalidating the exchange's 
>>sequence number of 1.
>>
>>This is just a small crib to a great product! I resolved it by 
>>suspending reset logon in this case till a heartbeat has been received
>>    
>>
>
>  
>
>>in fromAdmin.
>>
>>Thanks.
>>
>>Anil Jain
>>
>> 
>>
>> 
>>
>>     
>>
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