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Re: QUIC API (was: Re: Small size of core QUIC library to replace TCP for embedded system)

Martin Duke <martin.h.duke@gmail.com> Thu, 06 August 2020 23:37 UTC

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From: Martin Duke <martin.h.duke@gmail.com>
Date: Thu, 06 Aug 2020 16:37:01 -0700
Message-ID: <CAM4esxSkzijT8PMW7m2SY1j5c_AW=8L9tuq17RXWy+mmp4a0SA@mail.gmail.com>
Subject: Re: QUIC API (was: Re: Small size of core QUIC library to replace TCP for embedded system)
To: Lucas Pardue <lucaspardue.24.7@gmail.com>
Cc: Lars Eggert <lars@eggert.org>, quic <quic@ietf.org>, Paul Vixie <paul@redbarn.org>
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I am all for using TAPS concepts wherever possible, but I am not sure we
should put all of our eggs in that basket.

On Thu, Aug 6, 2020 at 4:27 PM Lucas Pardue <lucaspardue.24.7@gmail.com>
wrote:

> Would TAPS fit your bill?
>
> https://tools.ietf.org/html/draft-ietf-taps-interface-09
>
> On Thu, 6 Aug 2020, 23:57 Martin Duke, <martin.h.duke@gmail.com> wrote:
>
>> On this subject, (speaking as individual) I think it would be useful to
>> define a QUIC application API. SCTP did one (
>> https://datatracker.ietf.org/doc/rfc6458/) and the idea that an
>> application would have to be written separately for each quic
>> implementation is silly.
>>
>> On Tue, Jul 21, 2020 at 11:18 PM Lars Eggert <lars@eggert.org> wrote:
>>
>>> Hi,
>>>
>>> On 2020-7-21, at 20:02, Paul Vixie <paul@redbarn.org> wrote:
>>> > my question is, has any QUIC implementor been thinking along these
>>> lines? i
>>> > believe that the parameters to a QUIC "connect" syscall would be
>>> larger and
>>> > more numerous than for a TCP or SCTP or UDP "connect" syscall, for
>>> example.
>>>
>>> most QUIC implementations have an API that is at a high level pretty
>>> similar to the socket API, but different in all the details. And they are
>>> all different from each other.
>>>
>>> Since you asked about a "connect" equivalent, here is what some of the C
>>> stacks offer:
>>>
>>> quant:
>>> https://github.com/NTAP/quant/blob/master/lib/include/quant/quant.h#L110-L118
>>>
>>> msquic:
>>> https://github.com/microsoft/msquic/blob/master/src/inc/msquic.h#L745-L757
>>>
>>> quicly:
>>> https://github.com/h2o/quicly/blob/master/include/quicly.h#L892-L900
>>> <https://github.com/h2o/quicly/blob/master/include/quicly..h#L892-L900>
>>>
>>> Pretty different.
>>>
>>> Lars
>>>
>>

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