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Re: [Spud] New Version Notification for draft-hildebrand-spud-prototype-02.txt

"Joe Hildebrand (jhildebr)" <jhildebr@cisco.com> Mon, 09 March 2015 19:29 UTC

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From: "Joe Hildebrand (jhildebr)" <jhildebr@cisco.com>
To: Szilveszter Nadas <Szilveszter.Nadas@ericsson.com>, "spud@ietf.org" <spud@ietf.org>
Thread-Topic: New Version Notification for draft-hildebrand-spud-prototype-02.txt
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Date: Mon, 09 Mar 2015 19:29:12 +0000
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Subject: Re: [Spud] New Version Notification for draft-hildebrand-spud-prototype-02.txt
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On 3/5/15, 10:04 AM, "Szilveszter Nadas" <Szilveszter.Nadas@ericsson.com> wrote:

>Hi,
>
>Some minor comments/questions.
>
>Section 5 and 6 "may contain CBOR" contradicts for me with "0 key MUST NOT be used when the adec ot pdec bit is set" of Section 4.6. Or do you mean that adec=0 pdec=0 packets may also contain declarations?

I was thinking about end-to-end things for the non-0 keys in an open packet. a0p0 packets may contain non-0 keys, but I'm not thinking of those as declarations.  We'll find out more as we prototype a real transport on top of SPUD.

I suggest we leave it intentionally vague for the moment.

>Section 5: it is unclear for me what does "proof of implementation" mean. 

e.g. websockets (RFC 6455, section 1.3).  The client provides a nonce.  The server does some calculation that proves with higher confidence than the magic number provided that it is speaking SPUD, sending the result in the ack packet.

>Section 10: "which may always have the following keys"  - I assume that this key is optional but it is often expected to be used. Or shall it always be used when responding to a specific path declarations.

Probably only when responding to a specific path declaration.  I'm going to change the name to "midpoint token" to make it clear that this is not a cookie in the HTTP sense.

-- 
Joe Hildebrand

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