stunnel: warning: can't get client address: Bad file descriptor

[Adamsonh]

hi, stunnel 4.25 does not kill all stunnel instances after issuing "stop";
you have to kill all old stunnel jobs before restarting it.


noahwallach wrote:
> 
> Just upgraded stunnel and getting the following error message in the
> /var/log/messages file.  It appears that when I restart stunnel it 
> complains "Error binding pop3s to 0.0.0.0:995 and bind: Address already 
> in use (48)".  therefore the 995 port never becomes available during the 
> restart.  Why is that happening?  She the stunel logs below.
> 
> any clues?
> 
> ---- snip ---
> 
> Jun  8 13:17:04  stunnel: warning: can't get client address: Bad file
> descriptor
> Jun  8 13:17:34  last message repeated 530400 times
> Jun  8 13:18:00  last message repeated 488687 times
> 
> ---- snip ---
> 
> 
> ---- here is the stunnel.log -----
> 
> n# tail -n 50 -f /var/log/stunnel.log
> Jun  8 00:00:00 typhoon newsyslog[72831]: logfile turned over
> 2008.06.08 04:05:41 LOG7[21238:134664192]: Snagged 64 random bytes from 
> /root/.rnd
> 2008.06.08 04:05:41 LOG7[21238:134664192]: Wrote 1024 new random bytes 
> to /root/.rnd
> 2008.06.08 04:05:41 LOG7[21238:134664192]: RAND_status claims sufficient 
> entropy for the PRNG
> 2008.06.08 04:05:41 LOG7[21238:134664192]: PRNG seeded successfully
> 2008.06.08 04:05:41 LOG7[21238:134664192]: Certificate: 
> /usr/local/etc/stunnel/mail.pem
> 2008.06.08 04:05:41 LOG7[21238:134664192]: Certificate loaded
> 2008.06.08 04:05:41 LOG7[21238:134664192]: Key file: 
> /usr/local/etc/stunnel/mail.pem
> 2008.06.08 04:05:41 LOG7[21238:134664192]: Private key loaded
> 2008.06.08 04:05:41 LOG7[21238:134664192]: SSL context initialized for 
> service pop3s
> 2008.06.08 04:05:41 LOG5[21238:134664192]: stunnel 4.25 on 
> i386-unknown-freebsd6.2 with OpenSSL 0.9.8h 28 May 2008
> 2008.06.08 04:05:41 LOG5[21238:134664192]: Threading:PTHREAD SSL:ENGINE 
> Sockets:POLL,IPv6 Auth:LIBWRAP
> 2008.06.08 04:05:41 LOG6[21238:134664192]: file ulimit = 11095 (can be 
> changed with 'ulimit -n')
> 2008.06.08 04:05:41 LOG6[21238:134664192]: poll() used - no FD_SETSIZE 
> limit for file descriptors
> 2008.06.08 04:05:41 LOG5[21238:134664192]: 5417 clients allowed
> 2008.06.08 04:05:41 LOG7[21238:134664192]: FD 5 in non-blocking mode
> 2008.06.08 04:05:41 LOG7[21238:134664192]: FD 6 in non-blocking mode
> 2008.06.08 04:05:41 LOG7[21238:134664192]: FD 7 in non-blocking mode
> 2008.06.08 04:05:41 LOG7[21238:134664192]: SO_REUSEADDR option set on 
> accept socket
> 2008.06.08 04:05:41 LOG3[21238:134664192]: Error binding pop3s to 
> 0.0.0.0:995
> 2008.06.08 04:05:41 LOG3[21238:134664192]: bind: Address already in use
> (48)
> 
> 
> --- configuration -------
> 
> # cat /usr/local/etc/stunnel/stunnel.conf
> # Sample stunnel configuration file
> # Copyright by Michal Trojnara 2002
> 
> # Comment it out on Win32
> cert = /usr/local/etc/stunnel/mail.pem
> chroot = /var/run/stunnel
> #chroot = /var/run
> # PID is created inside chroot jail
> pid = /stunnel.pid
> setuid = stunnel
> setgid = stunnel
> # grep stunnel /etc/rc.conf
> stunnel_enable="YES"
> # cat /usr/local/etc/rc.d/stunnel
> #!/bin/sh
> #
> # $FreeBSD: ports/security/stunnel/files/stunnel.in,v 1.9 2008/01/26
> 14:18:12 roam Exp $
> #
> 
> # PROVIDE: stunnel
> # REQUIRE: NETWORKING SERVERS
> # BEFORE: DAEMON
> # KEYWORD: shutdown
> 
> #
> # Add some of the following variables to /etc/rc.conf to configure
> stunnel:
> # stunnel_enable (bool):        Set to "NO" by default.
> #                               Set it to "YES" to enable stunnel.
> # stunnel_config (str):         Default
> "/usr/local/etc/stunnel/stunnel.conf"
> #                               Set it to the full path to the config file
> #                               that stunnel will use during the automated
> #                               start-up.
> # stunnel_pidfile (str):        Default
> "/usr/local/var/stunnel/stunnel.pid"
> #                               Set it to the value of 'pid' in
> #                               the stunnel.conf file.
> #
> 
> . /etc/rc.subr
> 
> name="stunnel"
> rcvar=`set_rcvar`
> 
> load_rc_config $name
> 
> : ${stunnel_enable="NO"}
> : ${stunnel_config="/usr/local/etc/stunnel/${name}.conf"}
> : ${stunnel_pidfile="/var/run/stunnel/${name}.pid"}
> 
> command="/usr/local/bin/stunnel"
> command_args=${stunnel_config}
> pidfile=${stunnel_pidfile}
> 
> required_files="${stunnel_config}"
> 
> run_rc_command "$1"
> 
> 
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