[pptp-server] Session timeout

[Scott M. Stone]

On Tue, 4 Jul 2000, David Luyer wrote:

> > I'm not the world's greatest C programmer, so I'm curious about a little bit
> > of code.  Reading through everything, it appears that this causes an error
> > and disconnects the call if it takes longer than 5 seconds to receive an
> > echo reply.  I ask because I have a client who likes to stay connected for
> > 4,5,6 hours at a time monitoring her AS/400 batch jobs and would hate like
> > hell if there was some strange timeout in pptpd that was causing her to get
> > disconnected occassionally.  Can anyone shed some light for me?  Thanks in
> > advance.

I doubt that this is even relevant, is it?  doesn't pptpd pass control of
the tunnel over to pppd after it's established?  Seems like this is more
for timeouts while negotiating the tunnel in the first place..?

> 
> Well it's basically a check that the client is still connected.  If you
> find the congestion is too high and that is timing out you can increase it,
> but 5 seconds is really a long time.
> 
> > #define MAX_ECHO_WAIT	5
> > 
> > pptpctrl.c lines 391-395
> > /* waiting for echo reply and curtime - echo_time > max wait */
> > if (echo_wait == TRUE && (time(NULL) - echo_time) > MAX_ECHO_WAIT) {
> >   syslog(LOG_INFO, "CTRL: Session timed out, ending call");
> >   goto leave_clear_call;
> > }
> 
> David.
> -- 
> ----------------------------------------------
> David Luyer
> Senior Network Engineer
> Pacific Internet (Aust) Pty Ltd
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--------------------------
Scott M. Stone, CCNA <sstone at taos.com>
UNIX Systems and Network Engineer
Taos - The SysAdmin Company