On Fri, 2 Dec 2005 12:54:48 +0800 (CST), Suet Lung Cheung <[EMAIL PROTECTED]>
wrote:
Hi everyone,
I am writing a TCP server program using twisted. I cannot use pb since the
client side is not in python. I decided to use twisted.application and run it
as internet.TCPServer(...). My problem is that I want to make it save something
to a database whenever a connection closed. I do this in returning a deferred
under Protocol.connectionLost(). I would like to make this work when the server
is shut down. However when the server is down, it doesn't wait for the deferred
to finish the callback and quit. I would like to make it save to db as normal
but the server will wait for all deferred has called back. Is there anyway I
can do this? Any suggestions? Thanks a lot
Services receive shutdown notification via their stopService() method. The
method is called all the way down the service hierarchy when a twistd process
is preparing to terminate. If a stopService() method returns a Deferred, the
Deferred will be allowed to fire before shutdown completes. So you probably
want a custom Service implementation which knows about the Deferreds from your
connectionLost() and can return them from stopService() if necessary.
Jean-Paul
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