On Sat, 2008-08-09 at 17:43 +0100, Matthew Woodcraft wrote: > Don Dailey wrote: > > I am looking at this page: > > > > http://cryp.to/publications/masquerading-idle-connections/ > > > > and wondering if it's relevant. It seems to describe the problem > > pretty well, talks about a 15 minute timeout which would do it and the > > timeout is built into the linux kernel but can be changed. > > > > I'm really very weak on networking so I'm not sure what I'm actually > > reading or whether this fix needs to be applied on the server end or the > > client end. Any ideas is this is relevant? > > That page is talking about long-obsolete software, but yes, it seems very > likely that this is the basic issue. > > Most home 'internet routers' and many firewalls do network address > translation, and will fail to maintain a connection after some amount of idle > time. > > Trying to reconfigure the firewalls to have a longer timeout is probably a > waste of effort. I think arranging for either the CGOS server or the client to > send some boring message every few minutes will be the most practical > solution.
CGOS has an info message that can be sent to the clients. It is designed to send messages which can be basically ignored, or to support future monitoring features, perhaps announcing match-ups of the current round, etc, or broadcasting messages that the system will be going down. A future graphical client might perhaps display whatever messages are sent in a message box or something. I used to broadcast an estimate of the time remaining until the next round. I took it out, now I am putting it back in to see what happens. It will serve as a type of keepalive signal perhaps. The estimate isn't very accurate because it's based on the assumption that everyone left will use all their time remaining which rarely happens. If there is some kind of inactivity timeout, hopefully it will not require the client to also send messages. - Don > > -M- > _______________________________________________ > computer-go mailing list > [email protected] > http://www.computer-go.org/mailman/listinfo/computer-go/ _______________________________________________ computer-go mailing list [email protected] http://www.computer-go.org/mailman/listinfo/computer-go/
