Re: [Quickfix-developers] Out-of-order sequence numbers

[Joerg T. <Joe...@ma...>]

Oren Miller wrote:
> I'm not sure it is illegal, but I'm sure this behavior is not 
> recommended as it would cause the counterparty to send more resend 
> requests.  My guess is that while the QF thread is resending messages, 
> you're app is sending messages blissfully unaware of this state.
>  
> We made need to make QF a little smarter so this situation cannot occur.

Oren, do you have any concrete plans or suggestions how to do that?

IHMO, the most cleanest way would be to have threads to process incoming 
and outgoing messages and decouple them from the rest of the logic by 
some sort of concurrent queues (see my previous suggestion). But I do 
not know the internal architecture of QuickFIX good enough. Could you 
give me any clues?

Cheers, Jörg

> */Joerg Thoennes <Joe...@we...>/* wrote:
> 
>     Hi all,
> 
>     in our QF 1.5.0 application I noticed the following scenario:
> 
>     - Our application (acceptor) was sending unsolicited messages
>     (ExecutionReports) to the counterparty
> 
>     - The counterparty requested a ResendRequest FROM: nnn TO: 0
> 
>     - Our application fulfilled the ResendRequest, but at one point near
>     the end of the resent messages unsolicited messages with newer
>     sequence numbers got mixed with the normal flow
> 
>     Is that compliant with the FIX spec or may this be a bug in QF?
> 
>     Cheers, Jörg
> 
> 
> 
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