Re: [Quickfix-users] SessionQualifier and MySQL

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

Yeah, it was mostly designed to be used with initiators to get around =20=

a design flaw of some systems where they have different sessions =20
using the same session identifier on different ports.  The =20
functionality was not put in to enable this design flaw.  I would =20
reccommend instead that you vary the compIDs as is intended by the =20
protocol.

--oren

On Mar 22, 2006, at 2:57 AM, Joerg Thoennes wrote:

> QuickFIX Documentation: http://www.quickfixengine.org/quickfix/doc/=20
> html/index.html
> QuickFIX Support: http://www.quickfixengine.org/services.html
>
> Privet, Nikolay,
>
>> We're developing acceptor application, but the specific is that we =20=

>> want to
>> provide many clients to initiate sessions simultaneously. We use =20
>> QuickFIX
>> 1.11 with MySQL storing end logging. I tried to use =20
>> SessionQualifier, but it
>> doesn't works in way I expected. Two initators with same BeginString,
>> SenderCompID, TargetCompID and different SessionQualifier can't logon
>> simultaneously.
>> On acceptor side there are no record with nonempty =20
>> SessionQualifier field in
>> session table. One initator logins successfully, but all other =20
>> initator logs is flooded
>> with:
>> 20060321-16:41:08 : Connecting to localhost on port 5001
>> 20060321-16:41:09 : Connection succeeded
>> 20060321-16:41:09 : Initiated logon request
>> 20060321-16:41:09 : Socket Error: Connection reset by peer.
>> 20060321-16:41:09 : Disconnecting
>> Have you an idea, where is my mistake?
>
> The SessionQualifier was introduced -- if I recollect correctly -- =20
> to allow QF to manage several sessions with same SenderCompID and =20
> TargetCompID, _but_ different accept ports.
>
> Before that a QF session was uniquely identified by (BeginString, =20
> SenderCompID, TargetCompID).
>
> The important point in your case is that the SessionQualifier is =20
> _not_ transmitted over the wire, ie if both of your initiator =20
> clients has a different SessionQualifier configured, but connect to =20=

> the _same_ port with identical (BeginString, SenderCompID, =20
> TargetCompID), QF will forward these requests to the _same_ =20
> session, which results in the disconnects (since the session is =20
> already logged on).
>
> Please try with different ports for each different qualifier.
>
> Cheers, J=F6rg
>
> --=20
> Joerg Thoennes
>                                http://macd.com
> Tel.: +49 (0)241 44597-24      Macdonald Associates GmbH
> Fax : +49 (0)241 44597-10      Lothringer Str. 52, D-52070 Aachen
>
>
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