connection attempt timeout - possible feature?

[mouring at etoh.eviladmin.org]

This was talked about on efnet #unixhelp about a week ago while talking
about why ssh takes such a long time to timeout.  It's a feature of the OS
and the connect() function call in question, IIRC.

So in theory one could wrap the call in sshconnect.c (both places) with a
timer to interrupt connect().  Not sure if there is a cleaner way off
hand.

- Ben

On Wed, 4 Jul 2001 carl at bl.echidna.id.au wrote:

>
> I'm writing a network monitoring script, that has to traverse
> a bunch of firewalls (joy ...) and so for connectivity tests,
> I'm using ssh (OpenSSH 2.x).
>
> I'm being lazy, and trying to avoid parallel tasks/threading,
> so I'm interested in reducing the amount of time OpenSSH will wait
> to connect to something before giving up.  I've already set the
> ConnectionAttempts flag to 1, but am interested in reducing the amount of
> time it uses initially. From our boxes, the timeout seems to be abuot 60 seconds,
> but I haven't timed it yet, or groveled through the code enough
> to know for sure.
>
>
> Before I embark on a coding spree and hack at OpenSSH to
> do this, am I looking in the right place?  Is this behaviour
> controlled by the application or the OS?  My copy of Stevens is
> at home, and I'm not, so my usual reference isn't available right now.
>
> If it is an application specific, would the OpenSSH team be interested in
> a patch if I write one?
>
> Carl
>
>