Entering the mosh pit

Posted May 17, 2017 23:02 UTC (Wed) by Cyberax (✭ supporter ✭, #52523)
In reply to: Entering the mosh pit by shemminger
Parent article: Entering the mosh pit

> Using UDP and reinventing own flow control and retransmit is foolish.
Nope. Mosh is essentially a media application - it transmits the live video of the remote terminal.

So it's much better to transmit the whole screen state anew if an update packet is lost rather than wait for TCP retries to deliver all the intermediary packets.

For the same reason voice/video conferences use UDP - it's better to simply drop a small update to compensate for it later rather than cause the whole screen to stutter while the stream recovers.

>"Those who do not understand TCP are doomed to reinvent it"
Those who think that TCP is The Answer are foolish in the extreme.

Entering the mosh pit

Posted May 20, 2017 7:28 UTC (Sat) by niner (subscriber, #26151) [Link]

No idea if mosh does it, but since it transfers very little data and may be used over networks with large packet loss, it could even opportunistically retransmit. Just send each package twice or even more to increase the chance that at least one of them arrives.