Hi Brian.
The answer consists of a selection of text of section 7 of the draft.
The discovery follows the standard coap discovery.
________________________________________________________________
The discovery of the Join-Proxy by the
Pledge is an extension to the discovery described in section 4 of
[I-D.ietf-anima-bootstrapping-keyinfra]. In particular this section
replaces section 4.2 of [I-D.ietf-anima-bootstrapping-keyinfra].
The Pledge can discover a Join-Proxy by sending a link-local
multicast message to ALL CoAP Nodes with address FF01::FD. Multiple
or no nodes may respond. The handling of multiple responses and the
absence of responses follow section 4 of
[I-D.ietf-anima-bootstrapping-keyinfra].
The presence and location of (path to) the join-proxy resource are
discovered by sending a MC GET request to "/.well-known/core"
including
a resource type (RT) parameter with the value "brski-proxy"
[RFC6690]. Upon success, the return payload will contain the root
resource of the Join-Proxy resources.
____________________________________________________________ Looking
forward to your comments and suggestions,
Peter
Brian E Carpenter schreef op 2018-10-05 04:03:
> How does the constrained pledge discover the LL address of the constrained
> proxy?
>
> Regards
> Brian Carpenter
>
> On 2018-09-30 09:13, [email protected] wrote:
>
>> A New Internet-Draft is available from the on-line Internet-Drafts
>> directories.
>>
>> Title : Constrained Join Proxy for Bootstrapping Protocols
>> Authors : Michael Richardson
>> Peter van der Stok
>> Panos Kampanakis
>> Filename : draft-vanderstok-constrained-anima-dtls-join-proxy-00.txt
>> Pages : 10
>> Date : 2018-09-29
>>
>> Abstract:
>> This document defines a protocol to securely assign a pledge to an
>> owner, using an intermediary node between pledge and owner. This
>> intermediary node is known as a "constrained-join-proxy".
>>
>> This document extends the work of
>> [I-D.ietf-anima-bootstrapping-keyinfra] by replacing the Circuit-
>> proxy by a stateless constrained join-proxy, that uses IP
>> encapsulation.
>>
>> The IETF datatracker status page for this draft is:
>> https://datatracker.ietf.org/doc/draft-vanderstok-constrained-anima-dtls-join-proxy/
>>
>> There are also htmlized versions available at:
>> https://tools.ietf.org/html/draft-vanderstok-constrained-anima-dtls-join-proxy-00
>> https://datatracker.ietf.org/doc/html/draft-vanderstok-constrained-anima-dtls-join-proxy-00
>>
>> Please note that it may take a couple of minutes from the time of submission
>> until the htmlized version and diff are available at tools.ietf.org.
>>
>> Internet-Drafts are also available by anonymous FTP at:
>> ftp://ftp.ietf.org/internet-drafts/
>>
>> _______________________________________________
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>> Internet-Draft directories: http://www.ietf.org/shadow.html
>> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
>
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