Date: Sat, 19 Feb 2005 12:18:25 +0300 From: Rojer <myself@rojer.pp.ru> To: Maxim Konovalov <maxim@macomnet.ru> Cc: freebsd-hackers@freebsd.org Subject: Re: occasional ECONNREFUSED when connect()ing. Message-ID: <42170461.6040202@rojer.pp.ru> In-Reply-To: <20050219090855.C94145@mp2.macomnet.net> References: <4215EB31.8020107@rojer.pp.ru> <20050218232313.GA80993@cirb503493.alcatel.com.au> <42169BBD.1060704@rojer.pp.ru> <20050219090855.C94145@mp2.macomnet.net>
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This is a cryptographically signed message in MIME format. --------------ms010302010105060404050204 Content-Type: text/plain; charset=KOI8-R; format=flowed Content-Transfer-Encoding: 7bit >>>>I have a strange case of occasional refused connect()'s. >>>>The system is running 4.10-STABLE. >>>> >>>... >>> >>>>The question is - why do connections get refused at all? >>>>I can think of no valid reasons... >>> >>>FWIW, I can't either. The client is single-threaded so it's difficult >>>to see why this should occur. Unfortunately, I don't have ready >>>access to a 4.x system with perl 5.8 but I don't see the problem with >>>FreeBSD 5.3. >> >>problem solved by upgrading system to 4.11-STABLE. >> >>the problem is specific to 4.10: >>it does NOT show up on any of 3 systems running >>FreeBSD 4.9-STABLE #4: Mon Nov 10 18:47:10 MSK 2003 >>it DOES, however, show up on every one of 3 other systems, running >>FreeBSD 4.10-STABLE #10: Wed Aug 4 18:42:45 MSD 2004 >>and, as i said, it seems to have had been fixed somewhere before >>FreeBSD 4.11-STABLE #12: Sun Jan 23 14:09:07 MSK 2005 >> >>i don't feel like diving deep into the issue here... thanks everyone :) > > > [Haven't read your code] > > Try to turn net.inet.ip.portrange.randomized off. > yes, this does solve the problem on 4.10-STABLE. thanks, Maxim :) mink[/home/rojer]# uname -rms FreeBSD 4.10-STABLE i386 mink[/home/rojer]# ./x.pl 24045, http://localhost:8000/junk, 2000: starting. 42 500 Can't connect to localhost:8000 (Timeout) 397 500 Can't connect to localhost:8000 (Timeout) 478 500 Can't connect to localhost:8000 (Timeout) 1303 500 Can't connect to localhost:8000 (Timeout) 1746 500 Can't connect to localhost:8000 (Timeout) mink[/home/rojer]# sysctl -w net.inet.ip.portrange.randomized=0 net.inet.ip.portrange.randomized: 1 -> 0 mink[/home/rojer]# ./x.pl 24056, http://localhost:8000/junk, 2000: starting. mink[/home/rojer]# ./x.pl 24077, http://localhost:8000/junk, 2000: starting. mink[/home/rojer]# ./x.pl 24080, http://localhost:8000/junk, 2000: starting. mink[/home/rojer]# -- Deomid Ryabkov aka Rojer myself@rojer.pp.ru rojer@sysadmins.ru ICQ: 8025844 --------------ms010302010105060404050204 Content-Type: application/x-pkcs7-signature; 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