[maemo-developers] Delaying actions on network availability

[From: koos vriezen]

2010/2/20 olle <olle at nxs.se>:

> I've set up OpenVPN to tunnel all traffic on my N900 and it works beautifully with /etc/network/if-up / down scripts.
>
> Problem is, while OpenVPN is connecting, the IM clients all connect and then when the tunnel is up and default route is re-set it takes ages for them to time-out and reconnect.
>
> Is there any way to delay actions that happen on network availability (IM connect, mail sync, etc.)?

Interesting, I have a similar problem with kmplayer's download page
detecting the network connection has gone.
Looking a bit inside /proc/sys/net/ipv4/ I see that tcp_keepalive_*
might be useful in this respect. According to
http://tldp.org/HOWTO/TCP-Keepalive-HOWTO/usingkeepalive.html the
connection is terminated 9*75+7200 secs, i.e. about 2:11:15.
No idea if lowering these values will help though.

Koos