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Re: UDP, checksum, ports (was: Re: Should the specifications hard-refer to UDP?)

Christian Huitema <huitema@huitema.net> Fri, 04 September 2020 17:38 UTC

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Subject: Re: UDP, checksum, ports (was: Re: Should the specifications hard-refer to UDP?)
To: sarikaya@ieee.org, Lars Eggert <lars@eggert.org>
Cc: "quic@ietf.org" <quic@ietf.org>
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From: Christian Huitema <huitema@huitema.net>
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On 9/4/2020 9:07 AM, Behcet Sarikaya wrote:
>
>
> On Fri, Sep 4, 2020 at 10:56 AM Lars Eggert <lars@eggert.org
> <mailto:lars@eggert.org>> wrote:
>
>     Hi,
>
>     On 2020-9-4, at 18:36, Behcet Sarikaya <sarikaya2012@gmail.com
>     <mailto:sarikaya2012@gmail.com>> wrote:
>     > QUIC draft mentions UDP in many places, it says QUIC is
>     UDP-based but in the draft RFC 768 is not listed as a reference
>     informative/normative.
>
>     I opened https://github.com/quicwg/base-drafts/pull/4073 to fix
>     that - thank you for noticing.
>
>     > Second, probably more importantly, UDP header has the fields
>     source/destination port and checksum. These are not mentioned in
>     the draft.
>     > I wonder why?
>
>     What would you expect the drafts to say about checksums and ports?
>
>
> Yes, I realize that the draft mentions ports. 
> What I think should be mentioned is if these header fields are
> required then what are the requirements on implementations, or just
> refer to RFC 768?


Let's just refer to RFC 768. In particular, let's not have a protracted
discussion about UDP versus UDP-lite...

-- Christian Huitema

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