[This message was posted by lord lord of  <[email protected]> to the "4.0 
Session" discussion forum at http://fixprotocol.org/discuss/12. You can reply 
to it on-line at http://fixprotocol.org/discuss/read/cdf531a1 - PLEASE DO NOT 
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I am a little confused between FIX Connection and FIX Session.

According to the spec:
- FIX Connection is comprised of three parts: logon, message exchange, and 
logout.
- FIX Session is comprised of one or more FIX Connections, meaning that a FIX 
Session spans multiple logins.
- The logout message initiates or confirms the termination of a FIX session.  
Disconnection without the exchange of logout messages should be interpreted as 
an abnormal condition.  

In a FIX session, there might be multiple FIX Connections, and a FIX Connection 
includes logon, message exchange, and logout. But logout is a session 
terminator. So once a Session Connection is done completely with a logout 
message, the session is terminated as well. So how does FIX Session contains 
multiple FIX Connection? Looks like only "abnormal condition" (disconnection 
without exchange of logout messages) is possible to make a FIX Session to have 
multiple FIX Connections.

Does session termination means the MsgSeqNo has to be reset to 1 again?


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