The RFC for the IDLE says:
This document specifies the syntax of an IDLE command, which will
allow a client to tell the server that it's ready to accept such
real-time updates.
This doesn't say anything about keeping connections
open, it only talks about the near-instant new email notification.
-Chris
On 11/23/2010 10:01 AM, Ron Vachiyer wrote:
> Date: Tue, 23 Nov 2010 14:44:34 +0000
> From: iane@xxxxxxxxxxxx
> To: proutfoo@xxxxxxxxxxx; info-cyrus@xxxxxxxxxxxxxxxxxxxx
> Subject: Re: disable IMAP IDLE
>
>
>
> --On 22 November 2010 18:40:37 -0500 Ron Vachiyer
<proutfoo@xxxxxxxxxxx>
> wrote:
>
> >
> > Hello,
> >
> > I thought it was possible in Cyrus to disable the IDLE
functionality,
> > either with imapidlepoll: 0 in imapd.conf, or by
commenting idled in
> > cyrus.conf. However, having both disabled, clients still
connect and
> > maintain their socket open on tcp 143. Is it not
possible or am I going
> > about it wrong?
>
> I thought sessions remained open for efficiency, regardless
of IDLE, until
> closed by the client or 30 minutes have elapsed.
>
> IDLE just lets the server notify the client if new email
arrives, doesn't
> it?
>
> Even without IDLE, there are benefits in leaving the session
open.
Hello,
I won't argue since clearly I am in the minority ;) Using
courier-imap on our Plesk servers, TCP/143 is closed after every
new mail verification. A dovecot server I checked does the same.
Cyrus seems to allow the session to be maintained, and yes, it
does not advertise IDLE.
Below is an example courier-imap capability;
* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE
THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA ACL ACL2=UNION
STARTTLS] Courier-IMAP ready. Copyright 1998-2004 Double
Precision, Inc. See COPYING for distribution information.
. CAPABILITY
* CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE
THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA ACL ACL2=UNION
STARTTLS
this one is cyrus 2.4.4
. capability
* CAPABILITY IMAP4rev1 LITERAL+ ID ENABLE STARTTLS AUTH=PLAIN
SASL-IR ACL RIGHTS=kxte QUOTA MAILBOX-REFERRALS NAMESPACE UIDPLUS
NO_ATOMIC_RENAME UNSELECT CHILDREN MULTIAPPEND BINARY CATENATE
CONDSTORE ESEARCH SORT SORT=MODSEQ THREAD=ORDEREDSUBJECT
THREAD=REFERENCES ANNOTATEMORE LIST-EXTENDED WITHIN QRESYNC SCAN
XLIST URLAUTH URLAUTH=BINARY X-NETSCAPE COMPRESS=DEFLATE
. OK Completed
I was asked by IT to not permit IDLE since the current server went
down after 4-500 blackberries ate up all the (limited)
capabilities of that machine. Perhaps I am looking in the wrong
place, the point is the demand I am facing is to have IMAP that
essentially behaves as a POP3 client when it comes to inbox scans.
I believe there was an issue as well where POP clients using
outlook would cause mailbox corruption when they popped a mailbox
being maintained by a blackberry connected via IMAP.
R.
----
Cyrus Home Page: http://www.cyrusimap.org/
List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
|
----
Cyrus Home Page: http://www.cyrusimap.org/
List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
