{{Quickfixn}} Requesting the messages from message store [Or] Resend Request

[Selvaraj, Karthik (London)]

Hi Grant / Mike,
   May I know the best way to request the messages from the QuickFix Message store from a specific sequence number? Is it possible?
Scenario is as follows:
   I process the messages by placing them in a queue (that means the handler can return quickly).

>>>>>>>>>>>>>>>>>
  public void OnMessage(QuickFix.FIX42.NewOrderSingle order, SessionID sessionId)
        {
            _queue.EnqueueTask(() => ProcessBrokerOrder(order));

        }

        public void OnMessage(QuickFix.FIX42.ExecutionReport executionReport, SessionID sessionId)
        {
            _queue.EnqueueTask(() => ProcessBrokerFill(executionReport));
        }
<<<<<<<<<<<<<<<<<<<


Say  if my local queue has 1000 messages (yet to be processed by my application) but if the application crashes, QuickFix Sequence number should be alright and its message store too.
The application still need to process the lost messages. The application might know the last successfully processed message's sequence number.
So what would be the best way to re-request the messages that aren't processed by the application?
Is there a way to read the message store without using the resend request?
If resend request needs to be used - May I know whether the sequence number should be set back to the required seq no first and then issue the resend request?

Thanks,
Karthik

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