2010/2/21 olle <[email protected]>: > On Sat, Feb 20, 2010 at 09:49:48PM +0100, koos vriezen wrote: >> >> > 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. > > I'd rather not tweak the actual timeouts but delay the connections til after > the VPN is up. > Another possible solution I thought about is faking a network > disconnect/connect over dbus after th VPN is up to make all apps reconnect. > Thoughts?
Yeah and whether SO_KEEPALIVE is at all. A wifi disconnect doesn't close sockets, so the app has to response to the CON_IC_STATUS_DISCONNECTED signal to close its sockets. I always assumed that sockets can survive a fast reconnection (NAT connection tables might be flushed in case the hotspot is the NAT router, dunno). I guess you can simulate this by disconnecting/connecting your wifi/3g connection? Koos _______________________________________________ maemo-developers mailing list [email protected] https://lists.maemo.org/mailman/listinfo/maemo-developers
