[ANNOUNCEMENT] Updated: OpenSSH-7.4p1-1
Ismail Donmez
ismail@i10z.com
Tue Dec 20 22:46:00 GMT 2016
Hi,
On Tue, Dec 20, 2016 at 9:44 PM, Corinna Vinschen
<corinna-cygwin@cygwin.com> wrote:
> I've just updated the Cygwin version of OpenSSH to 7.4p1-1.
>
> This is primarily an upstream bugfix release.
>
> Below's the original release message.
[...]
> * ssh(1): Add a proxy multiplexing mode to ssh(1) inspired by the
> version in PuTTY by Simon Tatham. This allows a multiplexing
> client to communicate with the master process using a subset of
> the SSH packet and channels protocol over a Unix-domain socket,
> with the main process acting as a proxy that translates channel
> IDs, etc. This allows multiplexing mode to run on systems that
> lack file- descriptor passing (used by current multiplexing
> code) and potentially, in conjunction with Unix-domain socket
> forwarding, with the client and multiplexing master process on
> different machines. Multiplexing proxy mode may be invoked using
> "ssh -O proxy ..."
Looks like this could be used for connection multiplexing on Cygwin.
Since it doesn't seem to be documented I am not sure how one can test
it, but ...
with
Host *
ControlMaster auto
ControlPath ~/.ssh/master-%r@%h:%p
latte ~ > ssh i10z.com
mux_client_request_session: read from master failed: Connection reset by peer
Failed to connect to new control master
--> Fails as expected, lets retry.
latte ~ > ssh i10z.com
mux_client_request_session: read from master failed: Connection reset by peer
ControlSocket /home/ismail/.ssh/master-ismail@i10z.com:22 already
exists, disabling multiplexing
Welcome to Ubuntu 16.10 (GNU/Linux 4.8.0-30-generic x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
Last login: Tue Dec 20 23:42:56 2016 from 2a02:810d:8ac0:a3c:de8:1380:f2c2:bc79
--> Started a new session and created the master too.
latte ~ > ssh -O proxy i10z.com
Welcome to Ubuntu 16.10 (GNU/Linux 4.8.0-30-generic x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
Last login: Tue Dec 20 23:43:02 2016 from 2a02:810d:8ac0:a3c:de8:1380:f2c2:bc79
--> Started a new session.
latte ~ > ssh -O proxy i10z.com
Last login: Tue Dec 20 23:43:06 2016 from 2a02:810d:8ac0:a3c:de8:1380:f2c2:bc79
--> Voila, it used the existing connection!
And after that it indeed seems to be using the old connection as long
as you specify -O proxy option.
Something to play with I guess.
Regards,
ismail
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