From owner-freebsd-hackers  Sun Jun 13  8: 1:30 1999
Delivered-To: freebsd-hackers@freebsd.org
Received: from janus.syracuse.net (janus.syracuse.net [205.232.47.15])
	by hub.freebsd.org (Postfix) with ESMTP id 384CC14D22
	for <hackers@FreeBSD.ORG>; Sun, 13 Jun 1999 08:01:27 -0700 (PDT)
	(envelope-from green@unixhelp.org)
Received: from localhost (green@localhost)
	by janus.syracuse.net (8.9.2/8.8.7) with ESMTP id LAA26460;
	Sun, 13 Jun 1999 11:01:26 -0400 (EDT)
Date: Sun, 13 Jun 1999 11:01:26 -0400 (EDT)
From: Brian Feldman <green@unixhelp.org>
X-Sender: green@janus.syracuse.net
To: Dag-Erling Smorgrav <des@flood.ping.uio.no>
Cc: hackers@FreeBSD.ORG
Subject: Re: select(2) breakage
In-Reply-To: <xzpu2scxs3t.fsf@flood.ping.uio.no>
Message-ID: <Pine.BSF.4.10.9906131100140.26380-100000@janus.syracuse.net>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

On 13 Jun 1999, Dag-Erling Smorgrav wrote:

> Brian Feldman <green@unixhelp.org> writes:
> >   Another problem that came up with this: I originally started at port 1024.
> > I monopolized 30000 ports (almost all consecutive, of course). When I try to
> > connect() a TCP socket as non-root, it fails with EAGAIN (I only tracked it
> > far enough down as in_pcbbind().) It seems that eventually it gives up trying
> > to find a port... :-/
> 
> What kind of connects are you doing? If you try to connect all your
> sockets to the same destination,port tuple you'll quickly run out of
> source ports, since there are only a little less than 4,000 ports
> available:
> 
> des@des ~% sysctl -A | grep portrange
> net.inet.ip.portrange.lowfirst: 1023
> net.inet.ip.portrange.lowlast: 600
> net.inet.ip.portrange.first: 1024
> net.inet.ip.portrange.last: 5000
> net.inet.ip.portrange.hifirst: 49152
> net.inet.ip.portrange.hilast: 65535
> 
> connect() normally uses the 1024-5000 range. Try the following:
> 
> # sysctl -w net.inet.ip.portrange.last=40000
> 
> and see if it solves the EAGAIN problem.

Actually, this is the perfect explanation. I think that this should go in
the FAQ. Why in the world are we limiting the ports we can use other than
from 1-1023?

> 
> DES
> -- 
> Dag-Erling Smorgrav - des@flood.ping.uio.no
> 
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-hackers" in the body of the message
> 

 Brian Feldman                _ __ ___ ____  ___ ___ ___  
 green@unixhelp.org                _ __ ___ | _ ) __|   \ 
     FreeBSD: The Power to Serve!      _ __ | _ \._ \ |) |
         http://www.freebsd.org           _ |___/___/___/ 
 "<green_> THAT'S WRONG WRONG WRONG!"



To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message