Re: support git+mosh for unreliable connections

Trevor Saunders venit, vidit, dixit 15.04.2015 20:59:

On Wed, Apr 15, 2015 at 07:46:15PM +0200, Johannes Schindelin wrote:

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Hi Trevor,

On 2015-04-15 17:33, Trevor Saunders wrote:

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On Wed, Apr 15, 2015 at 04:41:42PM +0200, Johannes Schindelin wrote:

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On 2015-04-15 16:18, Pirate Praveen wrote:

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On Wednesday 15 April 2015 07:22 PM, Michael J Gruber wrote:

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What would that require git to do, beyond taking whatever you tell it
(using GIT_SSH or _GIT_SSH_COMMAND) to use as a drop in replacement for ssh?

May be support git+mosh as a protocol, since it is not a drop in
replacement. It is redesigned remote shell. The ideas it uses for
session resumption needs to be reimplemented. This will need support
from git, because it needs server side to be modified. Use SSP to return
the the current progress for a particular session (it uses AES session ids).

It will need support from Git alright, but not as much as from mosh, see my other reply: Mosh was not designed for non-interactive use. That support would have to be added before we can go any further.

is that really relevent? mosh doesn't support things like X forwarding
or port forwarding, but it certainly does support ssh <host> <command>
and then doing IO.

Ah, so mosh's README lied to me!

I wouldn't say it lied, its just not really clear what is "interactive"
I'd say git's use of ssh is kind of interactive compared to things like
port forwarding.

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If `mosh <user>@<host> <command>` works, then a simple `GIT_SSH=mosh` should work out of the box, too. Have you tried it?

it does work, I just tried mosh $host cat and then typing stuff and
having it printed back at me.  However it clears the terminal before
hand and prints a message on exit.  I tried GIT_SSH=mosh git clone and
it failed, but I haven't really dug into why.  SO I suspect this can be
made to work with some work on the mosh side, but I'm not sure exactly
how ssh and mosh are behaving differently here.

Trev

First thing you see on mosh.mit.edu:

"Mosh is a replacement for SSH."

I guess that needs a footnote...

Michael