45 lines
1.8 KiB
Plaintext
45 lines
1.8 KiB
Plaintext
MBOX-Line: From blong at google.com Tue Mar 20 15:06:24 2012
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To: imap-protocol@u.washington.edu
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From: Brandon Long <blong@google.com>
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Date: Fri Jun 8 12:34:48 2018
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Subject: [Imap-protocol] [ann] lua imap server
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In-Reply-To: <C6227176-73D4-455D-91D1-601384A7591E@mac.com>
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References: <CBFD9662-269A-4573-8EF1-E07E7BE4671C@mac.com>
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<20120319204645.GA2859@launde.brong.net>
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<E9A1A407-E02D-4FE8-82EC-B5DDC8F0EDE2@mac.com>
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<17068.1332195426.345309@puncture>
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<17068.1332235633.171765@puncture>
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<C6227176-73D4-455D-91D1-601384A7591E@mac.com>
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Message-ID: <CABa8R6taM1mpZznj3hyOWqK-GDTOuLwN11rawQ6UjjEVPur1Lw@mail.gmail.com>
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On Tue, Mar 20, 2012 at 2:33 PM, PA <petite_abeille@mac.com> wrote:
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>
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> On Mar 20, 2012, at 10:27 AM, Dave Cridland wrote:
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>
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> > No, NOOP is a command that does nothing; an EXISTS response is not
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> automatically generated - it can be generated during any command (or, for
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> extra bonus points, not during any command), but only when there are new
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> messages.
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>
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> Sure. Does it hurt though? If one send an EXISTS response even though the
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> message count hasn't changed?
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>
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We've seen some clients which will always request information about the
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last message in the folder if you give the same EXISTS. We issue duplicate
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EXISTS every N minutes on IDLE as a keepalive for the connection (to keep
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various NATs from closing the connection), but we only have to deal with
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the small number of extra FETCHes every N minutes. (we tried to use an
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untagged * XKEEPALIVE response, but some clients hang-up when they get an
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untagged response they don't understand).
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Brandon
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--
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Brandon Long <blong@google.com>
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Staff Engineer
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Gmail Delivery TLM
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