Question: killing/shuting down asyncore servers

[Jim Fulton]

Are there any recommendations for shutting down
asyncore-based servers cleanly from outside the
servers?

- Can a clean signal handler be written to
handle kill events? I tried writing a signal
handler that closed all the entries in the socket
map, but I have a feeling that this isn't working
properly. One of the problems I want to solve is
getting the socket I'm listening on to close
cleanly so that it isn't in use when I restart
the server.

I suspect I could make this work with some sort of
dedicated select trigger. I think it probably wants
to be dedicated because, if I used an existing select
trigger, I'd need to worry about the possability that
the signal would interrupt I/O on the select trigger.

- I suppose I could include a shutdown server, such that
if connections were made to this server, the application 
would shut-down cleanly. I could obviously generalize this
to a more general control server, which might provide
other commands. This approach is more portable, but
requires clients more complicated than kill. :)

How are other folks solving this problem?

Jim

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