Date: Tue, 1 Jun 1999 13:14:05 -0700 (PDT) From: Julian Elischer <julian@whistle.com> To: Matthew Hunt <mph@astro.caltech.edu> Cc: kip@lyris.com, Nate Williams <nate@mt.sri.com>, Poul-Henning Kamp <phk@FreeBSD.ORG>, current@FreeBSD.ORG Subject: Re: net.inet.tcp.always_keepalive on as default ? Message-ID: <Pine.BSF.3.95.990601131045.13159G-100000@current1.whistle.com> In-Reply-To: <19990601130331.A21176@wopr.caltech.edu>
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this is less and less of a problem because if you lose your link on PPP you are liable to get a differetn IP address on your redial. for network outages in the middle it works though.. but I'd rather have a keepalive of 10 x 4 hour pings before failure.. (or something as long..) It's really a per-connection decision on what makes sense julian On Tue, 1 Jun 1999, Matthew Hunt wrote: > On Tue, Jun 01, 1999 at 12:40:34PM -0700, kip@lyris.com wrote: > > > declared dead. I think it somewhat silly to say that this is consuming a > > lot of bandwidth. The average mail message (4k) is 4 packets, the average > > The other issue is that you don't necessarily want the TCP connection > to close just because you lose connectivity for a few hours. If we > send keepalives by default, might that not surprise users who don't > expect it? > > I'm thinking of long-lived connections like telnet and ssh; if you're > doing work over such a connection, it would be nice if the connection > endured an outage while you're away sleeping, like it does without > keepalives. > > -- > Matthew Hunt <mph@astro.caltech.edu> * UNIX is a lever for the > http://www.pobox.com/~mph/ * intellect. -J.R. Mashey > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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