I think part of the solution is a new class of keepalives.. With this new class, a keepalive is sent every N second (3600?) but if no response is heard, no action is taken. The only action that is taken is if a NAK is recieved in response.
Most IP addresses woudl be re-used within a few days, so even if someonen hangs up, in most cases SOMETHING will respond with a NACK withinthe next day or two. julian On Sat, 5 Jun 1999, Matthew Dillon wrote: > : There is no logical reason for a well-designed web server to enable > :keepalives. Of course, they don't hurt anything. > : > :... > : > : Agreed. Telnetd is the exception, keepalives are great for it. For > :everything else, almost, data timeouts make far more sense. And keepalives > :will do nothing, but won't hurt anything. > : > : As I have said before, any application that does not implement data > :timeouts for all states, and does not enable keepalives is BROKEN. > > You are missing the point, big time. > > There are hundreds of programmers writing hundreds of servers, most > written by third-parties. New ones pop up every day. Nobody > is going to go through and make sure all of them turn on keepalives. > Nobody is going to go and try to contact all the authors involved to > try to get them to implement their own timeouts. There are, in fact, > many servers where implementing a timeout is *inappropriate*. > > ssh, rsh, and telnet for example. nntp is an example of a server where > the timeout depends on the use. Some ISP's might want to implement a > timeout, others might not. At BEST I decided to *not* have a timeout... > people can stay connected and idle for hours if they want. > > Your 'solution' is no solution at all. You aren't thinking through the > problem carefully enough. > > The Keepalive capability exists for a reason. The original reasons for > not turning them on by default all those years ago no longer exist, and > the only reasons people come up with now are extremely shallow and > uninformed. > > I have yet to hear a single informed opinion against turning on > keepalives. > > All I hear is mob-mentality stuff: people with opinions not backed by > real facts, or people with opinions based on assumptions that are > incorrect. > > -Matt > Matthew Dillon > <dil...@backplane.com> > > > To Unsubscribe: send mail to majord...@freebsd.org > with "unsubscribe freebsd-current" in the body of the message > To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-current" in the body of the message
