[Quickfix-developers] Sychronization in FIX application

[Jo J. <jo...@tr...>]

Hello,
I have been struggling with NullReferenceExceptions that occur at
seemingly random times in my QuickFix application, when attempting to
send a message (sendToTarget). 
 
Is it necessary to synchronize access to the Session class and the
onApp, onAdmin, etc callbacks? 
 
I am calling sendToTarget from a thread I create myself and handling
incoming messages on the QuickFix initiator thread, and I wonder if this
could be the cause of my problems.
 
Thanks,
Jo Janssens
Telluride Asset Management