Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!lll-lcc!pyramid!athertn!joshua
From: joshua@athertn.Atherton.COM (Sleaze Hack)
Newsgroups: comp.protocols.tcp-ip
Subject: Re:  Writing more than 2K to a TCP socket (summary)
Message-ID: <252@olive.athertn.Atherton.COM>
Date: 13 Dec 88 23:52:11 GMT
Reply-To: joshua@Atherton.COM (Sleaze Hack)
Distribution: na
Organization: Atherton Technology, Sunnyvale, CA
Lines: 19

Thanks to everyone who responded to my cry for help.  It seems that
SunOS 3.4 is the _SunOS from Hell_ and has many known TCP bugs.  

Several people suggested replacing the TCP code with the newer "Van
Jacobson" TCP code.  This in ucbarpa.berkeley.edu:pub/43net/tcp.tar.Z
(or something similar).  You can annonymously ftp it.

John A. Shriver (jas@proteon.com) pointed out that there was an
option to setsockopt which did exactly what I wanted, but was only
available in 4.3bsd.  With 4.2bsd I needed to patch the kernal which
adjusts the space globally.  The kernal variables are tcpsendspace and
tcprcvspace.

Josh
--------                Quote: "If you haven't ported your program, it's not
Addresses:                      a portable program.  No exceptions."  
joshua@atherton.com OR         
sun!athertn!joshua  OR                 
{backbone}!{decwrl!hpda}!athertn!joshua  work:(408)734-9822 home:(415)968-3718