You searched for keepalive
1. keepalive
Syntax: toggle keepalive <1‑3600 seconds> <custom keepalive message>
The keepalive toggle exists to help you stay online if your connection drops
when your MUD client doesn't receive any output. The custom message you
enter will be sent to your screen after the number of seconds you set for
this toggle. Once you've been idle for the amount of time you specify, your
keepalive message will be sent to your screen. Idle means that you have not
typed anything nor do you have any pending commands in your command queue.
Once you have set a custom message, you do not need to re‑enter the message
the next time you turn on this toggle. The seconds and message you enter
are saved in your player file for your convenience.