@Override
public void on(com.marketfactory.mfclient.api.core.trading.Logout logout,
	MFMarketDataSession session) {
	System.out.println("Processing logoff request on trading session " + 
		session.getVenueName() + ", reason: " + logout.getText());
	try {
		session.logoutResponse(); // acknowledge logout request
	} catch (final MFException mfe) { 
		mfe.printStackTrace();
		System.exit(-1);
	}
}