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From: Archie Cobbs <archie@whistle.com>
Message-Id: <199611062046.MAA08387@bubba.whistle.com>
Subject: Re: Limiting bandwidth on a socket?  (SO_RCVBUF?)
In-Reply-To: <199611061411.IAA08311@brasil.moneng.mei.com> from Joe Greco at "Nov 6, 96 08:11:58 am"
To: jgreco@brasil.moneng.mei.com (Joe Greco)
Date: Wed, 6 Nov 1996 12:46:15 -0800 (PST)
Cc: hannibal@cyberstation.net, hackers@freebsd.org
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> > I'm trying to come up with some way to limit the amount of bandwidth on a
> > socket, so I can have my mail and large files retrieve without slowing
> > down a telnet session that much.
> >
> > [ ... ]
> >
> > Anyone know how to do this?
> 
> int s, rval;
> 
> s = socket(...);
> 
> while ((rval = read(..., 1024)) > 0) {
> 	sleep(1);
> }
> 
> if (rval < 0) {
> 	perror(...);
> }

This also might be a good application for divert(4) sockets .. just
stick in a daemon that throttles the I/O on whatever connections you
want to throttle... basically, doing the same as above except your
exiting applications don't have to be modified.

-Archie

___________________________________________________________________________
Archie Cobbs   *   Whistle Communications, Inc.  *   http://www.whistle.com