Re: [Driu] [DNSOP] SRV and HTTP

Mark Nottingham <mnot@mnot.net> Wed, 11 July 2018 01:32 UTC

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From: Mark Nottingham <mnot@mnot.net>
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Date: Wed, 11 Jul 2018 11:32:02 +1000
Cc: Joe Abley <jabley@hopcount.ca>, dnsop@ietf.org, DoH WG <doh@ietf.org>, Adam Roach <adam@nostrum.com>, driu@ietf.org, HTTP Working Group <ietf-http-wg@w3.org>
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References: <m1fcoe5-0000GuC@stereo.hq.phicoh.net> <alpine.LRH.2.21.1807101056140.5219@bofh.nohats.ca> <4a845808-5348-d6e4-dda2-59aaf0e85c14@nostrum.com> <3DF5A66C-CCBF-4116-A1FC-35CF8E05808B@hopcount.ca> <e1675184-f0bc-670d-3db1-b99a9daf1657@nostrum.com> <CAJhMdTOZtOpF_aK-ZzP0DfkDMcAtTKFLdSpKkrSPvP1cOgnOjQ@mail.gmail.com> <e658445a-242b-5f94-f1fc-0bc4c850319d@nostrum.com> <CAJhMdTOPjhbOK=NQijnYZ3kCY_+f-87n7wwwuR38ifHUG5msqA@mail.gmail.com> <F6C1AF50-EB1B-4E09-9A72-229AD4AC7E57@mnot.net> <82099DED-CCB6-4CDC-BFE6-97B1AB3EB0A4@isc.org>
To: Mark Andrews <marka@isc.org>
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Subject: Re: [Driu] [DNSOP] SRV and HTTP
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I didn't find those, but I found many others.

I'll start collecting. How about Tuesday, say 6:45-7:45pm?



> On 11 Jul 2018, at 11:30 am, Mark Andrews <marka@isc.org>; wrote:
> 
> 
> 
>> On 11 Jul 2018, at 11:22 am, Mark Nottingham <mnot@mnot.net>; wrote:
>> 
>> 
>> 
>>> On 11 Jul 2018, at 3:55 am, Joe Abley <jabley@hopcount.ca>; wrote:
>>> 
>>> On Jul 10, 2018, at 18:02, Adam Roach <adam@nostrum.com>; wrote:
>>> 
>>>> In large part because DNS provides "a richer scheme that accommodates address families and multiple addresses with priorities".
>>> 
>>> *cups hand to ear*
>>> 
>>> Was that the sound of a distant desire to specify use of SRV for HTTP?
>>> 
>> 
>> I recently did some digging on this topic, and can try to characterise what the issues / objections are.
> 
> I think there are three main objections.
> 
> 1) Wildcards don’t work with prefixes.
> 2) Additional data isn’t always returned it may require multiple round trips.
> 3) Additional data processing doesn’t support negative responses.
> 
> All of these issues are trivially easy to fix.  It just require willingness to implement.
> 
> 1) is addressed by defining a new type(s) rather than using prefixes.
> 2) is addressed by getting recursive servers to fill in missing additional data before returning.  Named has code in review for this for SRV as proof of concept.
> 3) is addressed by adding some signalling between the client and recursive server to indicate if the additional section is complete or not.
> 
> 
>> Would people be interested in a (hopefully brief) side meeting to discuss and maybe come to a shared understanding of the problem space?
>> 
>> Cheers,
>> 
>> --
>> Mark Nottingham   https://www.mnot.net/
>> 
>> _______________________________________________
>> DNSOP mailing list
>> DNSOP@ietf.org
>> https://www.ietf.org/mailman/listinfo/dnsop
> 
> -- 
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742              INTERNET: marka@isc.org

--
Mark Nottingham   https://www.mnot.net/