[PATCH] Added Null packet keepalive option

Chris Lightfoot chris at ex-parrot.com
Thu Mar 15 08:44:10 EST 2001

On Wed, Mar 14, 2001 at 10:31:23PM +0100, Markus Friedl wrote:
> SSH_MSG_NONE is no message that is allowd to appear on
> the wire, it's not defined at all.  SSH_MSG_IGNORE breaks
> ssh-1.2.18 to 1.2.22, but i think they'll accept an ignore message
> w/o payload.
> > +                /* Send a keepalive packet (not SSH_MSG_IGNORE as this crashes
> > +                 * some servers...).
> > +                 */
> > +                packet_start(SSH_MSG_NONE);
> > +                packet_send();
> > +                break;

I guess the choice here is between conforming to
standards and breaking old software, or ignoring
the standards and using something which seems to
work. I haven't noticed _MSG_NONE causing
problems with any of the servers I use, but I am
not going to argue that it is the Right Thing To

Chris Lightfoot -- www.ex-parrot.com/~chris/
 Life-- some days you're the dog, some days you're the hydrant

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