On Thu, 1 Aug 2002, Simon Josefsson wrote:
>Andreas Aardal Hanssen <[EMAIL PROTECTED]> writes:
>> Had you selected INBOX/KUN/employment when you sent the STATUS command?
>Yes, I assume so, although that part of the protocol dump wasn't
>provided by the user.
ok
>> If so, this is bad client behavior because you will get all the info you
>> need by sending "noop". Sending STATUS is unnecessary, and may be
>> confusing for the client, as STATUS may return other data than what you
>> got from the session you're in. It's a race..
>> STATUS returns a snapshot of the information you need, and you can make no
>> assumptions on it being exact later on.
>I cannot infer this from the specification. Where does it say this in
>the RFC? Reading the specification, it seems legal.
>How would sending NOOP discover the UIDNEXT value? I don't think NOOP
>can do this.
You get UIDNEXT from the SELECT response, then NOOP, IDLE etc will give
you status updates, so that you can find this number yourself.
It's not explicitly in the 2060 rfc, it's just common sense; it doesn't
make any sense to check the status of the folder that you are staring at,
using a method that gives you unreliable snapshot info.
Fyi, from rfc2683 (IMAP4 Implementation Recommendations):
3.1.1. Multiple Accesses of the Same Mailbox
(...)
4. you must avoid using the STATUS command on a mailbox that you have
selected (with some server implementations the STATUS command has
the same problems with multiple access as do the SELECT and
EXAMINE commands).
A further note about STATUS: The STATUS command is sometimes used to
check a non-selected mailbox for new mail. This mechanism must not
be used to check for new mail in the selected mailbox; section 5.2 of
[RFC-2060] specifically forbids this in its last paragraph.
RFC2060, 5.2:
Regardless of what implementation decisions a client makes on
remembering data from the server, a client implementation MUST record
mailbox size updates. It MUST NOT assume that any command after
initial mailbox selection will return the size of the mailbox.
Andy
--
Andreas Aardal Hanssen
