Major Description
Setting user's maxidletime property has no effect, only working idle time is the one provided by NioListener which is global.
The user's maxidletime is stored into ftp session as an attribute during PASS command, but nothing else happens. Idle event is completely handled by Mina and Mina has no knowledge about ftpserver's value. Mina takes the idle time from IoSessionConfig which is instantiated during NioListener construction (more precisely - during NioListener's SocketAcceptor construction). Each created session has its own copy of the config. That's my understanding and I hope it's right.