> >> Is there a way at the O/S level (unix-linux and windows) to set the
> >> keepalive for the O/S. Can you do it by port ?
> > 
> > Yes, the last ICS V5 BETA contains code for setting the keepalive.
> > Experience show that it doesn't work on all the OS version. Search in
> > messages posted in the list since last few month, we talked about this
> > issue. 
> 
> Francois,
> 
> I'm going to believe that something must be strange with your TCP settings,
> because I can control the keep-alive stuff on W2K as well as XP Sp2 just fine.
> 
> To enable keep-alive packets an application has to call setsockopt().
> If the application does not explizitly set KeepAliveTime and KeepAliveInterval
> system settings apply. Either the defaults or the values set in registry.
> But if the application sets KeepAliveTime and KeepAliveInterval by a call
> to WSAIoctl() those custom values apply. So current changes to the keep-alive
> stuff breaks backward compatibility due to the hardcoded values (Angus
> already reported such a case with a buggy router).

I will remove this code in the next ICS beta upload.

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