I havent been able to find an answer to this exact scenario with the quickFIXn engine. I will be setting up here as the initiator and will have a Start Day, End Day, start Time and end time set up for week long session. At the end of the week the Sequence numbers get reset which is perfectly fine. Now the thing I need to get done is to reset the message sequence numbers daily, keeping the weekly session going on. From what i've read till now, the only way to reset the message sequence numbers at a particular time is to set the start time and it would reset, but if I set the start day, it will reset only on the start day at start time, would ignore resetting the sequence numbers on the rest of the days. My question is this, how can I have both, a week long session and also have the message sequence number reset daily.
It sounds like what you really want is a day-long session, not a week-long session.
Delete StartDay and EndDay from your config file and you'll have day-long sessions.
QF will, however, attempt to connect on every day of the week, though, so if you want it to not start on, say, Sat/Sun, you'll have to shut it down.