From: Chris Shenton <chris@shenton.org>
Subject: Re: nnimap:$server unavailable... Go offline?
Date: Sat, 10 Jan 2004 15:20:35 -0500 [thread overview]
Message-ID: <86ptdr8sj0.fsf@PECTOPAH.shenton.org> (raw)
In-Reply-To: <iluptexx6eh.fsf@latte.josefsson.org> (Simon Josefsson's message of "Tue, 09 Dec 2003 18:11:50 +0100")
Chris Shenton <chris@shenton.org> writes:
>> I have an nnimap server, connect to it (with starttls), read mail for
>> a while, then ignore it a while. When I return, and do a "g" to check
>> mail (or go into a group to check headers, or...) Gnus reports
>>
>> Unable to open nnimap:myservername, go offline?
Simon Josefsson <jas@extundo.com> writes:
> Gnus do try to re-open the connection, but apparently it failed to do
> so, and asked that question. Look in the *Message* buffer for any
> earlier errors that may suggest why it was unable to reopen the
> connection.
I don't see anything interesting in *Message* but did turn on
imap-debug, imap-log, and nnimap-debug; I only see an *imap-log*
buffer, however. It's a little helpful but I'm still not able to
reconnect -- at least not with STARTTLS. Details below.
I've pulled Gnus "No Gnus v0.2" from CVS a few days ago but I'm still
getting disconnected and Gnus doesn't reconnect. The disconnect
happens when the IMAP daemon times out and says BYE, from *imap-log*:
* BYE Disconnected for inactivity.
When I type "G" in groups, it fails to connect (as I reported earlier)
and I have to answer Yes to take it offline. Nothing is said on port
143 when I sniff the connection while trying to do this "G" after the
disconnect -- it's not really trying to login to IMAP!
If I quit gnus then restart, it reconnects ok. That's odd.
I've done some testing and believe it's an interaction problem between
nnimap and starttls. My select methods are like:
(setq
gnus-secondary-select-methods
'(
(nnimap "pectopah"
(nnimap-address "pectopah.shenton.org")
)
)))
The server offers STARTTLS but doesn't require it from my LAN. Gnus
finds the "starttls" binary I got from ftp://ftp.opaopa.org/pub/elisp/
and does the STARTTLS ok.
If I hide the "starttls" binary or tell it to use plaintext in the
server definition with the attribute:
(nnimap "pectopah" ;use ~/.authinfo for user/passwd
(nnimap-address "pectopah.shenton.org")
(nnimap-stream "network")
)
then it *is* able to reconnect after a BYE disconnect. So there
appears to be an interaction problem with nnimap and starttls.
If I use "^" in *Group* to go into the *Server* buffer I see my IMAP
server is offline after the BYE timeout above:
{nnimap:pectopah} (offline) (agent)
I can say "O" to take it online:
{nnimap:pectopah} (opened) (agent)
Then I can read as normal, from the *imap-log*; note the first command
below is the same as Gnus sent after the timeout above but that one
failed; this one succeeds:
4887 STARTTLS
* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE AUTH=PLAIN STARTTLS LOGINDISABLED] Courier-IMAP ready. Copyright 1998-2003 Double Precision, Inc. See COPYING for distribution information.
4887 OK Begin SSL/TLS negotiation now.
4888 LOGIN "chris" "yeahright"
So what's the difference? I can't see anything more detailed in
various logs.
* Why does nnimap reconnect when there's no "starttls" binary involved?
* Why does nnimap reconnect using "starttls" binary if I "Open" the Server?
* Why doesn't it reconnect with "starttls" when I do "G" in *Group*
or let it time out and try to retrieve the next message in *Summary*?
Any suggestions how to debug, diagnose, and fix?
Thanks.
prev parent reply other threads:[~2004-01-10 20:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-09 17:01 Chris Shenton
2003-12-09 17:11 ` Simon Josefsson
2004-01-10 20:20 ` Chris Shenton [this message]
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