Re: [Quickfix-developers] Mistaken Test Request by QuickFIX

[Mike G. <mg...@co...>]

> Yes it causes problems. It tells the health of my FIX connections.
> Missing a heartbeat is a big deal.

It only becomes a big deal (i.e. the connection is considered lost) when 
one end of the connection sends no data for HeartBtInt seconds *AND* it 
additionally fails to respond to a TestRequest within HeartBtInt 
seconds.  Here's what the spec has to say:

When either end of a FIX connection has not sent any data for 
[HeartBtInt] seconds, it will transmit a Heartbeat
message. When either end of the connection has not received any data for 
(HeartBtInt + “some reasonable
transmission time”) seconds, it will transmit a Test Request message. If 
there is still no Heartbeat message
received after (HeartBtInt + “some reasonable transmission time”) 
seconds then the connection should be
considered lost and corrective action be initiated.

In the scenario you posted, could the Rejected message be counted as 
data received within the HeartBtInt period, thus obviating the need for 
the TestRequest?  I suppose it could.  However, it does not end up 
mattering if it does not count it because a TestRequest was sent and 
correctly responded to.  Which means that the connection is still 
"healthy".  Am I understanding your concern correctly?

-- 
Mike Gatny
Connamara Systems, LLC
http://www.connamara.com/