On 11/2/21 15:46, Jakub Jelen wrote:
Hi,
does your Cisco switch support more channels? You can try it for
example with openssh with connection multiplexing using
ControlMaster/ControlPath.
That's an interesting point. Did not know that multiplexing is possible.
But this is what I got:
First terminal
==============
tr@LinuxMint19:~/$ ssh -o ControlMaster=yes -o
ControlPath=~/.ssh/control-%h_%p_%r admin@192.168.4.219
Password: ************
gwswitch1#
Second terminal
===============
tr@LinuxMint19:~/$ ssh -o ControlPath=~/.ssh/control-%h_%p_%r
admin@192.168.4.219
mux_client_request_session: session request failed: Session open refused
by peer
Password: ************
gwswitch1#
Output on first terminal after second terminal connects:
gwswitch1#channel 3: open failed: resource shortage:
gwswitch1#
It seems that multiplexing is not possible on Cisco switches.
But now I am a little bit confused. I thought that calling
ssh_channel_close(channel);
ssh_channel_free(channel);
closes the shell and the session in a way that I can open a new one if
needed.
What is the right way to open a SSH connection, open a terminal/shell,
execute a few commands in it with
ssh_channel_write()
ssh_channel_read_nonblocking()
and close the shell without losing the connection?
comes from an error writing some packet. Can you step through that
part of the code for example with gdb to see what is failing where. I
I am using a compiled libssh library. For that I cannot debug the libssh
code. :(
Also, the important question is which libssh version are you using? Is
it up to date?
I am using version 0.9.6.
Thorsten
