Re: Get exit code of a executed remote command

["Oliver Stöneberg" <oliverst@xxxxxxxxx>]

Hi Thomas,

I think you actually need both. ssh_channel_send_eof() signals the 
server, that you are done sending data and ssh_channel_close()  
signals, that you are closing the channel. The latter one imply the 
first one, but I am not sure. 

I also just remembered, that you will get -1 as long as you dind't 
send the EOF yet.

Greetings
Oliver


> Hi Oliver,
> 
> that seems to work, thanks a lot for your help!
> By the way I figured out that ssh_channel_send_eof() instead of 
> ssh_channel_close() also works.
> 
> 
> Regards,
> 
> Thomas
> 
> > The function is quite flakey, because of issue in the way the close
> > flag is handled internally. I had to do two things:
> >
> > 1. call ssh_channel_close() before you call
> > ssh_channel_get_exit_status()
> > 2. put ssh_channel_get_exit_status() in a loop and wait for the
> > result to be not -1. I am waiting 20 times 50ms.
> >
> > This have been very reliable in using it with dozens, maybe even
> > hundreds or thousands of machines in the past few months.
> >
> > As a side note, you might also run into this problem with buggy SSH
> > daemons. There was apparently a dropbear version, that didn't always
> > send the exit status.
> >
> >> Hi,
> >>
> >> I tried to run a command on a remote host via "ssh_channel_request_exec"
> >> and get the the exit code back. My problem is that
> >> "ssh_channel_get_exit_status" returns always -1.
> >>
> >> Any idea what I'm doing wrong?
> >>
> >>
> >> Thanks in advance,
> >>
> >> Thomas
> >>
> >
> >
> >
> 
>