Hello network gurus!
To make a clean reboot of a remote embedded system, I need to have
<somebody> send a FIN to every connected hosts. In an interactive
system, init usually kills all the tasks, which forces an exit().
The kernel then closes all the sockets/fd's, etc. This usually is
sufficient to have most of the connected hosts disconnect before
the server crashes. This seems to be more time-related than anything
else.
In this embedded system, my home-made init does a kill(-1, 9) before
it reboots, but this is not sufficient. No FINs are sent to connected
hosts even if I sleep() a second after this.
Also, the equivalent of `ifconfig eth0 down` does not close these
sockets. I haven't mucked with routing yet.
Does anybody know if there is a socket call (or any other way), to
tell the network to disconnect __everybody__ __now__?
The connected hosts do disconnect after the embedded system reboots.
Cheers,
Dick Johnson
Penguin : Linux version 2.2.15 on an i686 machine (797.90 BogoMips).
"Memory is like gasoline. You use it up when you are running. Of
course you get it all back when you reboot..."; Actual explanation
obtained from the Micro$oft help desk.
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