[This message was posted by caihong zhang of IBM <[email protected]> to 
the "Transport Independence Framework" discussion forum at 
http://fixprotocol.org/discuss/49. You can reply to it on-line at 
http://fixprotocol.org/discuss/read/27fe63df - PLEASE DO NOT REPLY BY MAIL.]

Hello I am newer to Fix, and I am confused about the Fix Session and Fix 
connection concept on FIX Session Protocol Version 1.1. 

Fix Session is a bi-directional stream of ordered messages between two parties 
within a continuous sequence number series. A single FIX session can exist 
across multiple sequential(not concurrent) physical connections. 
Fix Session is comprised of one or more FIX connections, meaning that a FIX 
Session spans multiple logins.

So one fix session can have multiple connections at below scenarios:

1. A fix session is created between two physical parties, and there are 
multiple connections on top of this physical connection. Those multiple 
connections has different application versions within this fix session.

2.  A single FIX session can exist across multiple sequential(not concurrent) 
physical connections. For such case, since the physical connections are not 
concurrent, so there is no mean to maintain multiple connections that spans 
different physical connections. Saying, connection 1 is ip1:port1 - ip2:port2, 
connection 2 is ip1:port1 - ip3:port3. When connection 1 is down, connection 2 
is up, do we need to keep connection 1's info still in session, or we can just 
delete connection 1? Shall we keep connection 1's sequence number for next log 
on to trigger resend?

Thanks for your reading and please help to answer if you know it. 


[You can unsubscribe from this discussion group by sending a message to 
mailto:[email protected]]

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups 
"Financial Information eXchange" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to 
[email protected]
For more options, visit this group at 
http://groups.google.com/group/fix-protocol?hl=en
-~----------~----~----~----~------~----~------~--~---

Reply via email to