From: Matthias Andree <ma@dt.e-technik.uni-dortmund.de>
Cc: The Gnus Mailing List <ding@gnus.org>
Subject: Re: server disconnect leads to "article not found"
Date: Thu, 13 Jun 2002 02:37:46 +0200 [thread overview]
Message-ID: <m3zny02eud.fsf@merlin.emma.line.org> (raw)
In-Reply-To: <u8zlm9k9zgu.fsf@blackbird-2k.MITRE.ORG> (David S Goldberg's message of "Wed, 12 Jun 2002 13:30:25 -0400")
David S Goldberg <david.goldberg6@verizon.net> writes:
> I've seen this with other nntp servers (verizon and newsguy). What
> happens to me is a little different, I think, but may be related to
> the same issue.
>
> 1: I start reading news
> 2: One of the kids or my wife needs attention
> 3: In the interim the connection to the nntp server times out
> 4: I come back and try to read the next article ; it is bogusly marked
> deleted
> 5: I try to go to the next next article, gnus realizes the connection
> is gone, reestablishes it and properly finds that article.
Ok, I now have a full NNTP trace an can say what has happened. I'm not
attaching it in full, a commented excerpt is below.
1 - enter a group
2 - read an article
3 - write a follow, which takes me longer than the timeout of my NNTP
server
4 - to post, gnus connects, sends MODE READER, POST, the article,
receives 240 OK
5 - I then want to read another article of that group, Gnus sends GROUP,
which lets the server crash (it's buggy), so Gnus gets EOF in
response to the GROUP command -- at this time, Gnus claims
the article was expired or deleted.
6 - Reading a second article of the same group after the crash, Gnus
reconnects and retrieves the article properly.
So it looks as though Gnus would not recover properly from getting an
EOF in reply to a GROUP command, at least not when it had to reconnect
for a POST previously. (No, I haven't yet tracked the bug in my NNTP
server... need to get some core file first.)
-------------------------------
Here's the commented log excerpt of my NNTP session, with all CR
stripped for RFC-977/1036/2822 compliance. The trailing + are an
artifact of DJB's recordio (meaning "no LF here"), as are trailing
blanks (meaning "LF was here") and are not part of the actual chatter:
[Gnus is reading the reply to XOVER]
2002-06-13 02:11:06.681461500 11144 > 7191 Re: html editor Martin Klaffenboeck <martin.klaffenboeck@gmx.at> Thu, 13 Jun 2002 00:41:46 +0200 <86it4o5dcl.fsf@ns.kleinerdrache.org> <7a31ab73.0206101326.601597ab@posting.google.com> <iloverobin.87it4qvlsg.fsf@news.socha.net> <ae+
2002-06-13 02:11:06.681483500 11144 > 5kik$47uvb$2@ID-21915.news.dfncis.de> 1574 22 Xref: merlin.emma.line.org de.comp.os.unix.bsd:7191
2002-06-13 02:11:06.681487500 11144 > .
[Writing a followup, 5 mins after the last command, leafnode
disconnects]
2002-06-13 02:16:06.723526500 11144 > [EOF]
2002-06-13 02:16:06.723532500 tcpserver: end 11144 status 0
2002-06-13 02:16:06.723535500 tcpserver: status: 0/40
[still writing, then, to post, Gnus reconnects:]
2002-06-13 02:19:20.434905500 tcpserver: status: 1/40
2002-06-13 02:19:20.435386500 tcpserver: pid 13802 from 192.168.0.1
2002-06-13 02:19:20.441795500 tcpserver: ok 13802 merlin.emma.line.org:192.168.0.1:119 merlin.emma.line.org:192.168.0.1:emma:35542
2002-06-13 02:19:20.499434500 13802 > 200 Leafnode NNTP daemon, version 2.0b8_ma10pre3.2 at merlin.emma.line.org
2002-06-13 02:19:20.500543500 13802 < MODE READER
2002-06-13 02:19:20.715260500 13802 > 200 Leafnode 2.0b8_ma10pre3.2, pleased to meet you!
2002-06-13 02:19:20.718026500 13802 < POST
2002-06-13 02:19:20.743655500 13802 > 340 Ok, recommended ID <8eo8ea.afd.ln@merlin.emma.line.org>
2002-06-13 02:19:20.745469500 13802 < Newsgroups: de.comp.os.unix.bsd
2002-06-13 02:19:20.745476500 13802 < Subject: Re: FreeBSD 4.6: Welche IDE Platten koennen TCQ
2002-06-13 02:19:20.745479500 13802 < References: <3D04AF13.360354C5@sbox.tu-graz.ac.at> <m3zny3lziy.fsf@merlin.emma.line.org>
2002-06-13 02:19:20.745484500 13802 < <fjm4ea.gv.ln@Magelan.Leidinger.net> <m3n0u1bfe4.fsf@merlin.emma.line.org>+
2002-06-13 02:19:20.745488500 13802 <
2002-06-13 02:19:20.745489500 13802 < <8im7ea.qj.ln@mscu.best-eng.de>
2002-06-13 02:19:20.745492500 13802 < From: Matthias Andree <matthias.andree@gmx.de>
2002-06-13 02:19:20.745552500 13802 < Date: Thu, 13 Jun 2002 02:19:20 +0200
2002-06-13 02:19:20.745555500 13802 < Message-ID: <m38z5k3u9j.fsf@merlin.emma.line.org>
2002-06-13 02:19:20.745557500 13802 < Lines: 42
2002-06-13 02:19:20.745559500 13802 < User-Agent: Gnus/5.090007 (Oort Gnus v0.07) Emacs/21.1 (i686-pc-linux-g+
2002-06-13 02:19:20.745661500 13802 < nu)
2002-06-13 02:19:20.745663500 13802 < Cancel-Lock: sha1:Qr3IcUu/Aj6nMDy6XmrRljqLoTU=
2002-06-13 02:19:20.745666500 13802 < MIME-Version: 1.0
2002-06-13 02:19:20.745668500 13802 < Content-Type: text/plain; charset=iso-8859-15
2002-06-13 02:19:20.745671500 13802 < Content-Transfer-Encoding: 8bit
2002-06-13 02:19:20.745674500 13802 <
[article body omitted]
2002-06-13 02:19:20.747906500 13802 < .
2002-06-13 02:19:20.918247500 13802 > 240 Article posted, now be patient
[article posted, another article is to be displayed]
2002-06-13 02:19:27.040830500 13802 < GROUP de.comp.os.unix.bsd
2002-06-13 02:19:27.043279500 13802 > [EOF]
2002-06-13 02:19:27.043286500 tcpserver: end 13802 status 11
2002-06-13 02:19:27.043289500 tcpserver: status: 0/40
[the server has just crashed, Gnus has announced the article was gone]
[save this log for later analysis]
[Clicking on another article lets Gnus reconnect again]
2002-06-13 02:21:10.901983500 tcpserver: status: 1/40
2002-06-13 02:21:10.902438500 tcpserver: pid 14358 from 192.168.0.1
2002-06-13 02:21:10.908179500 tcpserver: ok 14358 merlin.emma.line.org:192.168.0.1:119 merlin.emma.line.org:192.168.0.1:emma:35544
2002-06-13 02:21:10.970009500 14358 > 200 Leafnode NNTP daemon, version 2.0b8_ma10pre3.2 at merlin.emma.line.org
2002-06-13 02:21:10.971141500 14358 < MODE READER
2002-06-13 02:21:11.164818500 14358 > 200 Leafnode 2.0b8_ma10pre3.2, pleased to meet you!
2002-06-13 02:21:11.166994500 14358 < GROUP de.comp.os.unix.bsd
2002-06-13 02:21:11.171458500 14358 > 211 2369 4611 7192 de.comp.os.unix.bsd group selected
2002-06-13 02:21:11.172486500 14358 < ARTICLE 7188
2002-06-13 02:21:11.189445500 14358 > 220 7188 <86elfc6uh0.fsf@ns.kleinerdrache.org> article retrieved - text follows
2002-06-13 02:21:11.190671500 14358 > Path: news.t-online.com!newsmm01.sul.t-online.com!newsfeed01.sul.t-online.de!t-online.de!fu-berlin.de!uni-berlin.de!static62-99-146-055.adsl.inode.AT!not-for-mail
2002-06-13 02:21:11.190681500 14358 > From: Martin Klaffenboeck <martin.klaffenboeck@gmx.at>
2002-06-13 02:21:11.190685500 14358 > Newsgroups: de.comp.os.unix.bsd
2002-06-13 02:21:11.190687500 14358 > Sub+
2002-06-13 02:21:11.190689500 14358 > ject: Re: FreeBSD 4.6 Release
2002-06-13 02:21:11.190692500 14358 > Date: Wed, 12 Jun 2002 23:46:35 +0200
2002-06-13 02:21:11.190753500 14358 > Lines: 20
2002-06-13 02:21:11.190755500 14358 > Message-ID: <86elfc6uh0.fsf@ns.kleinerdrache.org>
2002-06-13 02:21:11.190758500 14358 > References: <GxM2wB.H5@news.online.de>
2002-06-13 02:21:11.190761500 14358 > NNTP-Posting-Host: static62-99-146-055.adsl.inode.at (62.99.146.55)
2002-06-13 02:21:11.190764500 14358 > Mime-Version: 1+
2002-06-13 02:21:11.190766500 14358 > .0
2002-06-13 02:21:11.190767500 14358 > Content-Type: text/plain; charset=iso-8859-1
2002-06-13 02:21:11.190786500 14358 > Content-Transfer-Encoding: 8bit
2002-06-13 02:21:11.190789500 14358 > X-Trace: fu-berlin.de 1023919061 5015991 62.99.146.55 (16 [35066])
2002-06-13 02:21:11.190792500 14358 > X-Orig-Path: ns.kleinerdrache.org!nobody
2002-06-13 02:21:11.190795500 14358 > X-Url: http://create.kleinerdrache.org
2002-06-13 02:21:11.190797500 14358 > User-Agent: Gnus/5.0900+
2002-06-13 02:21:11.190799500 14358 > 07 (Oort Gnus v0.07) XEmacs/21.5 (bok choi,
2002-06-13 02:21:11.190818500 14358 > i386-unknown-freebsd4.5)
2002-06-13 02:21:11.190821500 14358 > Cancel-Lock: sha1:H3iVvfgaKvw59WP9icnRCbmF/LE=
2002-06-13 02:21:11.190848500 14358 > Xref: merlin.emma.line.org de.comp.os.unix.bsd:7188
2002-06-13 02:21:11.190851500 14358 >
[body snipped]
2002-06-13 02:21:11.191030500 14358 > .
2002-06-13 02:22:00.337190500 14358 > 6776 Re: apache PHP Permissions ? alex@lapp.tv (Alex Lapp) Mon, 27 May 2002 19:32:18 GMT <3cf28938.19545+
[rest stripped, everything is fine again]
--
Matthias Andree
next prev parent reply other threads:[~2002-06-13 0:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-11 23:21 Matthias Andree
2002-06-12 0:31 ` Matthias Andree
2002-06-12 17:30 ` David S Goldberg
2002-06-13 0:37 ` Matthias Andree [this message]
2002-06-13 11:13 ` Matthias Andree
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=m3zny02eud.fsf@merlin.emma.line.org \
--to=ma@dt.e-technik.uni-dortmund.de \
--cc=ding@gnus.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).