From owner-freebsd-hackers Wed Jul 14 13: 9:21 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from lamb.sas.com (lamb.sas.com [192.35.83.8]) by hub.freebsd.org (Postfix) with ESMTP id 5D23614D69 for ; Wed, 14 Jul 1999 13:09:18 -0700 (PDT) (envelope-from jwd@unx.sas.com) Received: from mozart (mozart.unx.sas.com [192.58.184.8]) by lamb.sas.com (8.9.3/8.9.1) with SMTP id QAA18220 for ; Wed, 14 Jul 1999 16:08:45 -0400 (EDT) Received: from bb01f39.unx.sas.com by mozart (5.65c/SAS/Domains/5-6-90) id AA15674; Wed, 14 Jul 1999 16:08:15 -0400 Received: (from jwd@localhost) by bb01f39.unx.sas.com (8.9.1/8.9.1) id QAA69071 for freebsd-hackers@freebsd.org; Wed, 14 Jul 1999 16:08:14 -0400 (EDT) (envelope-from jwd) From: "John W. DeBoskey" Message-Id: <199907142008.QAA69071@bb01f39.unx.sas.com> Subject: tcp windowsize query? To: freebsd-hackers@freebsd.org Date: Wed, 14 Jul 1999 16:08:14 -0400 (EDT) X-Mailer: ELM [version 2.4ME+ PL43 (25)] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hi, I'm trying to dynamically determine the tcp windowsize. Sysctl has the following to say, but the name/value pairs are not documented. net.inet.tcp.rfc1323: 0 net.inet.tcp.rfc1644: 0 net.inet.tcp.mssdflt: 512 net.inet.tcp.rttdflt: 3 net.inet.tcp.keepidle: 14400 net.inet.tcp.keepintvl: 150 net.inet.tcp.sendspace: 16384 net.inet.tcp.recvspace: 16384 net.inet.tcp.keepinit: 150 net.inet.tcp.log_in_vain: 0 net.inet.tcp.delayed_ack: 1 net.inet.tcp.path_mtu_discovery: 1 net.inet.tcp.pcbcount: 156 net.inet.tcp.always_keepalive: 1 The rfc values are self-explanatory... send/recv space might be what I'm looking for... delayed ack sounds interesting.... Any comments, documentation, or pointers are much appreciated. I'm now off to dig through the kernel... Thanks, john To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message