misc/66629: socket connecting with itself (race condition?)

[Maxim Konovalov]

The following reply was made to PR misc/66629; it has been noted by GNATS.

From: Maxim Konovalov <maxim at macomnet.ru>
To: Fabien MENEMENLIS <fabien at iliad.fr>
Cc: bug-followup at freebsd.org
Subject: Re: misc/66629: socket connecting with itself (race condition?)
Date: Fri, 14 May 2004 14:58:17 +0400 (MSD)

 On Fri, 14 May 2004, 03:43-0700, Fabien MENEMENLIS wrote:
 
 >
 > >Number:         66629
 > >Category:       misc
 > >Synopsis:       socket connecting with itself (race condition?)
 [...]
 > >Environment:
 > FreeBSD huge.dir.com 4.9-STABLE FreeBSD 4.9-STABLE #2: Fri Mar  5 15:58:16 CET 2004     fabien at huge.iliad.fr:/usr/obj/usr/src/sys/DUAL  i386
 >
 > >Description:
 > When connecting to a closed local port in PF_INET space with many clients, it happens once in a while that connect() succeeds. The output of netstat -A for the given connection is then:
 > ea2c0e40 tcp4       0      0  localhost.4555     localhost.4555     ESTABLISHED
 
 It's expected behaviour called "simultaneous open".
 
 > I've not been able to reproduce the problem on a 5.2.1 environment.
 
 Probably due to differences in portranges between HEAD and RELENG_4.
 
 [...]
 
 -- 
 Maxim Konovalov