[Quickfix-developers] problem with invalid PossDup=Y messages

[Hugo L. <Hug...@in...>]

Hi all,

I've detected a problem between quickfix server + client (or: acceptor + 
initiator).
Let's suppose this rare scenario:

- client logs on; 
- client detects seqnum gap, asks to resend messages from, say, seqnum=20;
- server resends message 20;
- (somehow message 20 has a tag without value, or some other validation 
problem);
- client rejects message 20; (but does not increase targetseqnum)
- eventually, server sends next message;
- client detects seqnum gap, asks to resend messages from seqnum=20;
- server resends message 20;
- (etc, etc, client and server become stuck in this resend loop)


Versions affected (possibly not limited to) : 1.3.2, 1.7.0.

Am I doing something wrong / is this not true ?


Thanks in advance,
Hugo Leote