[Dovecot] More effective mailbox fetching over high RTT link

[Andrzej Adam Filip]

Ben Winslow <rain at bluecherry.net> wrote:

> On Sun, 09 Aug 2009 22:20:41 +0200
> Andrzej Adam Filip <andrzej.filip at gmail.com> wrote:
>
>> Could you offer some suggestion how to fetch mailbox content over 
>> high RTT link (with negligible packet loss)?
>> 
>> Currently I use IMAP+IDLE *but* it fails to use full available
>> bandwidth due to high RTT and "send command wait for response" nature
>> of POP3 and IMAP4 protocols.
>
> The entire purpose of the command tag in IMAP is to facilitate
> batching or concurrent commands.  See RFC3501 section 5.5.  It
> shouldn't be too difficult to batch requests for new messages, or even
> select all the new messages in one request for a single folder.

Could you recommend tool/client program capable to use "IMAP pipelining"?

-- 
[pl>en: Andrew] Andrzej Adam Filip : anfi at onet.eu
Virtue does not always demand a heavy sacrifice -- only the willingness
to make it when necessary.
  -- Frederick Dunn