Re: Advertising WebSocket support in the HTTPS resource record

Hi,

On Tue, Oct 19, 2021 at 11:53 PM Ben Schwartz <bemasc@google.com> wrote:

> Thanks for this draft, Dragana!
>
> As a matter of IETF procedure, I think it's best to avoid specifying a
> number for the SvcParam in your draft at least until it is adopted by a
> working group.  (Right now we are in a slightly awkward position, as the
> SvcParam registry will be First-Come-First-Served, but it does not yet
> exist.)  Your chosen value, for example, happens to collide with
> draft-ietf-dnsop-svcb-dns.
>

Thank you. I will fix it and I will remember for further drafts.


>
> On the technical side, I wonder if you've looked at
> https://datatracker.ietf.org/doc/html/draft-vvv-httpbis-alps?  That
> proposal would provide the SETTINGS frame earlier in the handshake,
> achieving the same goal of avoiding this delay.  Compared to delivery over
> DNS, it has some important benefits.  For example, it reduces the amount of
> information that needs to be synchronized between HTTP servers and their
> DNS zones, and encompasses any future HTTP SETTINGS as well.
>

The draft will eliminate some of this delay, but the TLS handshake still
needs to be completed. There can be situation where it is possible to use
HTTP/3 and HTTP/2, the client could choose to try HTTP/3, fallback to
HTTP/2 and than to HTTP/1.1 or skip one of the steps.

Dragana


>
> On Tue, Oct 19, 2021 at 5:41 PM Dragana Damjanovic <
> dragana.damjano@gmail.com> wrote:
>
>> Hi,
>>
>> I wrote a sort draft to support advertising WebSocket support using HTTPS
>> RR records.
>>
>> Any feedback is welcome.
>>
>> Kind Regards,
>> Dragana
>>
>>
>> ---------- Forwarded message ---------
>> From: <internet-drafts@ietf.org>
>> Date: Tue, Oct 19, 2021 at 10:54 PM
>> Subject: New Version Notification for
>> draft-damjanovic-websockets-https-rr-00.txt
>> To: Dragana Damjanovic <dragana.damjano@gmail.com>
>>
>>
>>
>> A new version of I-D, draft-damjanovic-websockets-https-rr-00.txt
>> has been successfully submitted by Dragana Damjanovic and posted to the
>> IETF repository.
>>
>> Name:           draft-damjanovic-websockets-https-rr
>> Revision:       00
>> Title:          Advertising WebSocket support in the HTTPS resource record
>> Document date:  2021-10-19
>> Group:          Individual Submission
>> Pages:          5
>> URL:
>> https://www.ietf.org/archive/id/draft-damjanovic-websockets-https-rr-00.txt
>> Status:
>> https://datatracker.ietf.org/doc/draft-damjanovic-websockets-https-rr/
>> Htmlized:
>> https://datatracker.ietf.org/doc/html/draft-damjanovic-websockets-https-rr
>>
>>
>> Abstract:
>>    This specification introduces a way to advertise the support for the
>>    extended CONNECT feature that is used for running the WebSocket
>>    protocol over a single stream of an HTTP/2 and HTTP/3 connection
>>    using HTTPS resource records [HTTPSRR].
>>
>>
>>
>>
>> The IETF Secretariat
>>
>>
>>