[Quickfix-developers] Re: Week Long Sessions

[Michael H. <mh...@li...>]

QuickFix Version: 1.94

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Problem Summary:

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I am using the week long session functionality. Our client QuickFix =
application machine is set to EST (UTC+11) and the Fix Engine which I =
connect to is set to UTC. So at 11am (UTC midnight) QuickFix will =
disconnect our connection and we experience ~1 minute downtime while we =
re-sync with the exchange. Our session crosses the UTC midnight barrier. =


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Solution:

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In the SessionTime.cpp file you need to modify this method:=20

bool SessionTime::isSameSession( const UtcTimeOnly& startTime, const =
UtcTimeOnly& endTime, int startDay, int endDay, const UtcTimeStamp& =
time1, const UtcTimeStamp& time2 )

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This line is what is causing the problem:

return tm1.tm_year =3D=3D tm2.tm_year && tm1.tm_yday =3D=3D tm2.tm_yday;

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Since we cross over the UTC midnight mark tm2.tm_yday is 1 day greater =
then tm1.tm_yday. This causes QuickFix to disconnect because it assumes =
it=92s a different session. This problem does not occur if both =
applications run on a machine with both time zones set to UTC. I changed =
the time_localtime function to use gmtime instead of localtime and this =
fix my problem.=20

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I believe this case should be added to the test scripts.=20

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Thanks

Michael Holm

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