The OnixS C++ FIX Engine logs its data into
FixEngineLog.txt file located in
MsgStorage subfolder of the current (for executing application) folder.
For each FIX session with a file-based session storage, the following files are also created in the
SESSION_NAME.summarycontains both inbound and outbound FIX messages.
SESSION_NAME.statecontains session state-related data.
SESSION_NAME is formed on the base of values returned by OnixS::FIX::Session::senderCompId, OnixS::FIX::Session::targetCompId, session's dictionary FIX Version (OnixS::FIX::Dictionary::version) and a timestamp. During the run-time, it's available via OnixS::FIX::Session's string casting to overload.