MBOX-Line: From arnt at gulbrandsen.priv.no  Mon Oct 28 06:25:22 2013
To: imap-protocol@u.washington.edu
From: Arnt Gulbrandsen <arnt@gulbrandsen.priv.no>
Date: Fri Jun  8 12:34:51 2018
Subject: [Imap-protocol] Mac OS 10.9 particularly buggy implementation of
	IMAP
In-Reply-To: <1382749818.11252.38686053.54FA9CC9@webmail.messagingengine.com>
References: <1382749818.11252.38686053.54FA9CC9@webmail.messagingengine.com>
Message-ID: <20131028132511.GA13146@gulbrandsen.priv.no>

On Sat, Oct 26, 2013 at 12:10:18PM +1100, Bron Gondwana wrote:
> (there's another interesting pattern, it appears to send the 'D' of
> 'DONE' in a separate packet when finishing IDLE... no idea why.  I've
> never seen DONE split over two reads before)

Two possibilities:

1. It's a neat hack to learn whether a middlebox has killed the
   connection.

2. They're sending the D, O and N separately to extend NAT timeouts.

Arnt

