Re: Check if host is available

[Thomas Mayer <tm.telemotive@xxxxxx>]

Hi,

Am 03.08.2011 17:16, schrieb Oliver Stöneberg:
> > > > if I try to connect to a host via ssh_connect() and the host isn't
> > > > available the function blocks.
> > > did you set a timeout?
> > No, thanks for the advice!
> That actually didn't work until the 0.5.0 release :)
Are you sure? Timeout options works in my test program, but only with 
the ssh_connect() function.
> > This could be the solution for my next problem. I want to detect if
> > someone for example unplugged the network cable while a ssh session is
> > running.
> I have no idea how to do this, but if this happens libssh is/was
> prone to hang since there are still polls without an timeout. That's
> similar to the situation you had with ssh_connect().
>
> I actually encountered a very serious ones, that was actually
> happening with exec, but I haven't gotten access to a sample machine
> yet, so I couldn't find out what was going on. It was limited to that
> custom system though and is reproducible.
My idea was to use a QTcpSocket from the Qt lib. If the connection is 
disconnected you can catch the "disconnected" signal of the socket and 
then kill the ssh session thread. But till now, it's only a idea and not 
practically tested ;)


Regards,

Thomas