Re: [6lowapp] BOF proposal: update

Hi,

Sam Roberts wrote:
> On Mon, Sep 28, 2009 at 11:04 AM, Brian Frank <brian.tridium@gmail.com> wrote:
>> Couple of my thoughts to echo what some others have said:
>> - I believe the application protocol should be format agnostic.  I suspect
>> that it will be difficult to achieve consensus on data formats. I am not
>> sure how that might limit the scope of 6lowapp, but certainly I hope that a
>> debate on formats doesn't derail the transport protocol itself
> 
> I share the hope that format discussions won't bog things down.
> 
> Perhaps I misunderstand what you mean by "format agnostic", won't
> non-specification of such an important aspect prevent independantly
> developed implementations of the protocol from interoperating?

By format agnostic, we only mean that the protocol must have a content 
type/encoding identifier. The same philosophy is used by HTTP. Here our 
challenge is to represent that with 1-2 bytes. Once you have that, 
application developers may use any kind of content-type over this 
protocol, including e.g. text/xml, text/plain, rdf+xml, 
application/octet-stream using any content-encoding such as x-exi.

>> - I personally believe that naming should be based on URIs; however it seems
>> as this is already presumed as a requirement?
> 
> Have I missed discussion of this, or has rehosting the zigbee
> application support layer and cluster library on top of IPv6 over
> 802.15.4 already been discussed and/or discarded as a possibility?

The current indication from ZigBee/IP and Smart Energy is that they will 
use a web based approach. The ZigBee application layer is not being used 
in Smart Energy 2.0 at all, which is currently the only profile being 
developed for "ZigBee/IP". I would say this is something we should 
consider in the future (a later re-chartering) if we see there is a need 
  from the other organizations involved. For this charter the goal is to 
stick to the most urgent tasks.

> A profile supporting RESTful URI based request/response could exit at
> a zigbee endpoint.

Sure, I think you could definitely make them interact, and this would be 
an interesting draft!

Zach

> 
> Cheers,
> Sam
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Zach Shelby
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