openssh unix dev - Oct 2010 - about testing SSH5.6 new feature.

Hi, all
Congratulations for the  latest OpenSSH release!
Currently I'm writing the cases for testing the new feature. But this new
feature is very complex for me:
Ssh(1) connection multiplexing now supports remote forwarding with dynamic port
allocation and can report the allocated port back to the user:
LPORT=`ssh -S muxsocket -R0:localhost:25 -O forward somehost
Can you tell me the way follow which I can basically test the new case on a Unix
system(One connect to itself)?


Thanks and Regards,
Bin, Bai.

On Thu, 14 Oct 2010, Bai, Bin wrote:
> Hi, all
> Congratulations for the  latest OpenSSH release!
> Currently I'm writing the cases for testing the new feature. But this
new feature is very complex for me:
> Ssh(1) connection multiplexing now supports remote forwarding with dynamic
port allocation and can report the allocated port back to the user:
> LPORT=`ssh -S muxsocket -R0:localhost:25 -O forward somehost
> Can you tell me the way follow which I can basically test the new case on a
Unix system(One connect to itself)?
ssh -Nnf -o ControlMaster=yes -o ControlPath=~/.ssh/_%r@%h:%p somehost

LPORT=`ssh -oControlPath=~/.ssh/_%r@%h:%p -R0:localhost:25 -O forward somehost

echo $LPORT

In practise, you would put the ControlMaster and ControlPort options in
~/.ssh/config and probably use ExitOnForwardFailure=yes and ControlPersist
too.

-d