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I need to close all ongoing Linux TCP sockets as soon as the Ethernet interface drops (ie cable is disconnected, interface is down’ed and so on).
Hacking into /proc seems not to do the trick. Not found any valuable ioctl’s.
Doint it by hand at application level is not what I want, I’m really looking for a brutal and global way of doing it.
Did anyane experienced this before and willing to share his foundings ?
The brutal way which avoids application level coding is hacking your kernel to activate TCP keepalive with a low timeout for all your connections.