On Thu, 17 Dec 2009, Timo Sirainen wrote:
On Thu, 2009-12-17 at 10:22 -0800, Mark Crispin wrote:
No server "caches the flags" as you describe. If the mail store in the
server supports multiple simultaneous sessions to the same mailbox (e.g.,
mix and mbx formats in UW), then flags are updated immediately.
Well, not necessarily immediately, at least not all servers. A NOOP
command should refresh flags and other things with most servers.
A server that requires use of the NOOP command to synchronize is broken.
A NOOP command MUST NOT do anything special. It's a no-op. Its only
purpose is to cycle the server engine if otherwise has nothing to do.
Any server refresh operations MUST be done on every command.
A client that uses the IDLE command has no reason to use the NOOP command,
ever.
Hmm. Dovecot's current behavior is that doing a FETCH FLAGS just after
its flags had changed in another session first returns one FETCH FLAGS
with the old flags (the FETCH reply), then another FETCH FLAGS with the
updated flags (after it noticed the changes).
That's OK. It's in the same set of responses, isn't it? The later flags
response overrides the former one.
-- Mark --
http://panda.com/mrc
Democracy is two wolves and a sheep deciding what to eat for lunch.
Liberty is a well-armed sheep contesting the vote.
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