Is it possible to disable pipelining in imapc?

[Aki Tuomi]

On 11.09.2017 11:59, Nagy, Attila wrote:
> On 09/11/2017 10:42 AM, Sami Ketola wrote:
>>> On 11 Sep 2017, at 11.24, Nagy, Attila <bra at fsn.hu> wrote:
>>> I use dovecot with a broken IMAP server (which doesn't properly
>>> implement command pipelining amongst others) as an imapc backend.
>>> Dovecot issues the above command sequence (SELECT and UID FETCH
>>> pipelined), which doesn't work with this server.
>>>
>>> Therefore I'm requesting an imapc_features setting,
>>> IMAPC_FEATURE_NO_PIPELINING, which disables PIPELINING in dovecot
>>> imapc. Similarly to other workarounds, like
>>> IMAPC_FEATURE_FETCH_MSN_WORKAROUNDS,
>>> IMAPC_FEATURE_FETCH_FIX_BROKEN_MAILS et al.
>>
>> Dovecot IMAPC should not pipeline unless remote advertises pipelining
>> support in CAPABILITY response.
>> Are you saying that you have imap server which advertses support for
>> it but then does not support it
>> after all?
>>
> It's a capability in POP3 and an extension in (E)SMTP.
> I don't know about pipelining capability in IMAP (BTW, the server
> doesn't advertise such capability, in fact, it doesn't support any
> capabilities), it's standard, plain old IMAP RFC:
> https://tools.ietf.org/html/rfc3501#section-5.5
>
> The whole topic is about a bad IMAP server, which doesn't properly
> implement pipelining (hence IMAP RFC), like others, for which dovecot
> implements a workaround in imapc.

But are you using it like with doveadm? or proxying connection to? How
are you invoking imapc?

Aki