Throwing RejectLogon causes Logout message before Disconnect

Trying to reject invalid (potentially malicious) Logon requests from an unrecognised IP address fromAdmin by throwing RejectLogon exception when a "bad" Logon is detected.

The JavaDoc for RejectLogon says:

"This exception causes a logon to be reject with an immediate disconnect."

However Session.next(Message) is calling generateLogout() when RejectLogon is caught, so the disconnect is not "immediate", and the "unauthorized" logon attempt consumes a sequence number in the outgoing direction which the "authorized" connecting system may not be aware of when next it logs in, causing a ResendRequest to be sent when a valid logon is finally established (see FIX Protocol 4.4 with Errata 20030618, Vol 2 - "Session Protocol", page 6).