Return-Path: Delivered-To: apmail-httpd-dev-archive@www.apache.org Received: (qmail 32098 invoked from network); 7 Feb 2008 13:28:40 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 7 Feb 2008 13:28:40 -0000 Received: (qmail 77603 invoked by uid 500); 7 Feb 2008 13:28:26 -0000 Delivered-To: apmail-httpd-dev-archive@httpd.apache.org Received: (qmail 77550 invoked by uid 500); 7 Feb 2008 13:28:26 -0000 Mailing-List: contact dev-help@httpd.apache.org; run by ezmlm Precedence: bulk Reply-To: dev@httpd.apache.org list-help: list-unsubscribe: List-Post: List-Id: Delivered-To: mailing list dev@httpd.apache.org Received: (qmail 77539 invoked by uid 99); 7 Feb 2008 13:28:26 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 07 Feb 2008 05:28:26 -0800 X-ASF-Spam-Status: No, hits=-0.0 required=10.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: local policy) Received: from [85.91.5.16] (HELO infiltrator.stdlib.net) (85.91.5.16) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 07 Feb 2008 13:27:57 +0000 Received: from colmmacc by infiltrator.stdlib.net with local (Exim 4.60) (envelope-from ) id 1JN6nL-0005uU-7S for dev@httpd.apache.org; Thu, 07 Feb 2008 13:28:03 +0000 Date: Thu, 7 Feb 2008 13:28:03 +0000 From: Colm MacCarthaigh To: dev@httpd.apache.org Subject: Re: tcp_get_info().... Message-ID: <20080207132803.GA22605@infiltrator.gizzard.com> Reply-To: colm@allcosts.net References: <561142.55289.qm@web58501.mail.re3.yahoo.com> <20080207112504.GA31883@infiltrator.gizzard.com> <0FA5AFEA-5275-412C-BF3B-0FCF2254EF97@webweaving.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <0FA5AFEA-5275-412C-BF3B-0FCF2254EF97@webweaving.org> User-Agent: Mutt/1.5.11 X-Virus-Checked: Checked by ClamAV on apache.org On Thu, Feb 07, 2008 at 12:39:14PM +0100, Dirk-Willem van Gulik wrote: > Have a look at the ntp protocol - it is fairly effective at this - > and I would not rule out that you'd be able to do something similar > (abeit less accurate) on a keep-alive connection. NTP does it via phase-lock loop, and it's pretty clever alright, a PLL could be applied to the back and forth traffic for HTTP alright, as long as the implementor took great care to work around things like accept filters (so throw away the first session). It'd be interesting, mod_youre_on_sattellite_broadband ;-) -- Colm MacC�rthaigh Public Key: colm+pgp@stdlib.net