@Override
public void sessionIdle(IoSession session, IdleStatus status) throws Exception {
super.sessionIdle(session, status);
// 如果IoSession闲置，则关闭连接
if (status == IdleStatus.BOTH_IDLE) {
session.write(HEARTBEATRESPONSE);
}
}
@Override
public void sessionIdle(IoSession session, IdleStatus status) throws Exception {
log.debug("IDLE " + session.getIdleCount(status));
super.sessionIdle(session, status);
}