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Re: [core] FW: New Version Notification for draft-liu-core-coap-delay-attacks-01.txt

Carsten Bormann <cabo@tzi.org> Mon, 13 November 2017 08:42 UTC

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From: Carsten Bormann <cabo@tzi.org>
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Date: Mon, 13 Nov 2017 16:41:42 +0800
Cc: "Zhujintao (Julian)" <jintao.zhu@huawei.com>, "core@ietf.org" <core@ietf.org>
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To: Göran Selander <goran.selander@ericsson.com>
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Subject: Re: [core] FW: New Version Notification for draft-liu-core-coap-delay-attacks-01.txt
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On Nov 13, 2017, at 15:07, Göran Selander <goran.selander@ericsson.com> wrote:
> 
> 3. Your draft could be implemented as an application of CoAP, i.e. in the
> CoAP payload. Considering that the freshness requirements may be very
> specific depending on use cases, maybe some parts should be left to the
> application?

(That is actually true of the nonce-based freshness, too.
Application-layer is the way nonce-based freshness is done in the Web.
The Echo option proposal just reflects that there is an advantage in having a common way of doing this.)

Grüße, Carsten

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