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Re: UPnP service implementing an intent

From: Jean-Claude Dufourd <jean-claude.dufourd@telecom-paristech.fr>
Date: Wed, 23 Nov 2011 19:37:28 +0100
Message-ID: <4ECD3D68.5010304@telecom-paristech.fr>
To: James Hawkins <jhawkins@chromium.org>
CC: public-web-intents@w3.org
Thanks for that sentence, now I think I got it:
Web Intents does not provide a discovery mechanism. Web Intents provides 
a registry and broker mechanism.
So if another technology provides a discovery mechanism (e.g. the UPnP 
service broadcast announcement, SSDP) and some entity implements the 
adaptation from SSDP to intent registration, the Web Intents can be used 
as the interface from web apps to services discovered with the other 
technology.

All my confusion (shared by others I believe) came from trying to 
understand how Web Intents provided discovery, which was hopeless :)

We just need to make sure, by implementing it, that it is possible for 
some entity to implement the adaptation from SSDP to intent registration.

Best regards
JC

On 23/11/11 18:03 , James Hawkins wrote:
> Can't the UA receive the broadcast of the UPnP service and add it to 
> the intent registry?  In general our model has the UA being the broker 
> for platform-level interactions with intents.
>
> James
>
> On Wed, Nov 23, 2011 at 7:38 AM, Jean-Claude Dufourd 
> <jean-claude.dufourd@telecom-paristech.fr 
> <mailto:jean-claude.dufourd@telecom-paristech.fr>> wrote:
>
>     Dear all,
>
>     In the Home Network TF of Web and TV IG, we discussed discovery of
>     services, including the discovery of those services offered
>     through existing protocols such as UPnP.
>     I heard at the TPAC that web intents are the way to satisfy the
>     HNTF requirements on discovery.
>     From reading the emails on this list, I do not see how it is
>     possible to wrap UPnP services as intents.
>     It seems a mediator or proxy would be needed, receiving the
>     initial broadcast of the UPnP service announcing itself,
>     translating that to an intent registration and sending it to the
>     intents broker.
>     If so, then no, web intents do not satisfy the HNTF requirements
>     on discovery, or at least, there is a significant missing part.
>     Best regards
>     JC
>
>     -- 
>     JC Dufourd
>     Directeur d'Etudes/Professor
>     Groupe Multimedia/Multimedia Group
>     Traitement du Signal et Images/Signal and Image Processing
>     Telecom ParisTech, 37-39 rue Dareau, 75014 Paris, France
>     Tel: +33145817733 <tel:%2B33145817733> - Mob: +33677843843
>     <tel:%2B33677843843> - Fax: +33145817144 <tel:%2B33145817144>
>
>
>


-- 
JC Dufourd
Directeur d'Etudes/Professor
Groupe Multimedia/Multimedia Group
Traitement du Signal et Images/Signal and Image Processing
Telecom ParisTech, 37-39 rue Dareau, 75014 Paris, France
Tel: +33145817733 - Mob: +33677843843 - Fax: +33145817144
Received on Wednesday, 23 November 2011 18:38:01 UTC

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