[core] Re: [dtn] Fwd: New Version Notification for draft-gomez-core-coap-bp-00.txt

Carles Gomez Montenegro <carles.gomez@upc.edu> Wed, 29 May 2024 07:42 UTC

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From: Carles Gomez Montenegro <carles.gomez@upc.edu>
Date: Wed, 29 May 2024 09:41:50 +0200
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To: Christian Amsüss <christian@amsuess.com>
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CC: Rick Taylor <rick@tropicalstormsoftware.com>, "core@ietf.org" <core@ietf.org>, "dtn@ietf.org" <dtn@ietf.org>, Anna Calveras Auge <anna.calveras@upc.edu>
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Subject: [core] Re: [dtn] Fwd: New Version Notification for draft-gomez-core-coap-bp-00.txt
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Hello again, Christian,

On the point below:

On Tue, 19 Mar 2024 at 12:32, Christian Amsüss <christian@amsuess.com>
wrote:

> On Tue, Mar 19, 2024 at 07:59:15AM +0000, Rick Taylor wrote:
> > In BPv7 bundles are (mostly uniquely) identified by the tuple of
> > (Source EID, Timestamp) both in the primary block:
>
> Hm, even if we can assume that the Source EID is constant across
> retransmissions (we likely can) and the transmission timestamp is made
> available to the application after transmission (is it?), and even if we
> could know the current bundle's timestamp in advance (likely not), even
> a delta compressed version of that in CBOR soon exceeds the 24bit of the
> extended MID -- and thus, it's not only more complex than sticking with
> MIDs, it's also larger.
>
> Using the presence of the send time stamp (independent of the MID
> considerations) should make Observe easier to handle, though:
> Notifications in NONs might be implicitly ordered by their send time
> stamps;


Regarding your last paragraph above, it is a very useful suggestion, and we
plan to incorporate it in -01.

Once again, many thanks!

Best regards,

Carles and Anna

not sure whether we have anything in our toolkit already to help
> with CON notifications.
>
> BR
> Christian
>
> --
> To use raw power is to make yourself infinitely vulnerable to greater
> powers.
>   -- Bene Gesserit axiom
>