Dovecot IDLE problem (was Re: [Dovecot] inotify support in dovecot)

[Reuben Farrelly]

Hi,

I've come across some possibly buggy behaviour with regards to Dovecot and the 
use of the IDLE keyword.  Found this while testing out inotify support for 
Johannes - although after asking him and him reproducing it, he is of the 
opinion that it's not a inotify specific problem.

The behaviour is that when the client is idling, Dovecot seems to only alert 
to the first new message received, and if a subsequent new message comes in 
before the client finishes idling, that second new message is not notified to 
the connected client.

To reproduce:

$ maildirmake /tmp/imap-test
$ cat >/tmp/1 <<EOF
From: test
To: test
Subject: test

test!
<Ctrl-D>
$ MAIL=Maildir:/tmp/imap-test /usr/libexec/dovecot/imap
...
A SELECT INBOX
B IDLE

[now, in a different terminal, copy /tmp/1 to /tmp/imap-test/new, you
should instantly be notified of it in your imap session]

** Dovecot correctly responds with:

* 1 EXISTS
* 1 RECENT

[if a second message is delivered, eg by copying /tmp/1 to 
/tmp/imap-test/new/2 then you should be notified as well, but this never occurs]

DONE
C LOGOUT
$

Timo - what do you think?

Reuben