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To: Archie Cobbs <archie@whistle.com>
cc: jgreco@brasil.moneng.mei.com (Joe Greco), hannibal@cyberstation.net,
        hackers@freebsd.org
Subject: Re: Limiting bandwidth on a socket? (SO_RCVBUF?) 
In-reply-to: Your message of "Wed, 06 Nov 1996 12:46:15 PST."
             <199611062046.MAA08387@bubba.whistle.com> 
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Date: Wed, 06 Nov 1996 13:25:00 -0800
From: Amancio Hasty <hasty@rah.star-gate.com>
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What about kernel modifications?
In a commercial environment it can  be very beneficial to provide rate
control. QOS --- that ugly old OSI term or more recently reservation
bandwith services.

	Amancio

>From The Desk Of Archie Cobbs :
> 
> > > 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
>