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RE:S600: Comments on the Web Services Architecture Usage Scenario s document (was Re: New draft of the Web Services Architecture Usage Scen arios document)

From: Damodaran, Suresh <Suresh_Damodaran@stercomm.com>
Date: Fri, 21 Jun 2002 09:10:43 -0500
Message-ID: <40AC2C8FB855D411AE0200D0B7458B2B07C5974C@scidalmsg01.csg.stercomm.com>
To: "'Hugo Haas'" <hugo@w3.org>, www-ws-arch@w3.org


Hugo,

It is good to see "Address based discovery" in the document,
and I am in general agreement with your comments, except one.

As you know, URL, as defined in [1], includes other protocols apart from
http.
Though HTTP GET may be listed as a "candidate technology," as you suggest,
my preference is
not to limit ourselves to HTTP. An application may want to use ftp based
service discovery,
or smtp based. Or, a SOAP based service discovery (assuming whatever
underlying protocols). 

Just leave the door open for discovery:-)

Regards,

-Suresh
Sterling Commerce  

[1] http://www.w3.org/Addressing/rfc1738.txt
 



-----Original Message-----
From: Hugo Haas [mailto:hugo@w3.org]
Sent: Thursday, June 20, 2002 5:52 PM
To: www-ws-arch@w3.org

<snip>
S600 Address based Discovery[2] is useful and relates to the "no a
priori knowledge" requirement. However, the description proposed is
complex: it seems to me that if somebody has a URL for something (a
service here), the natural thing to do is to do a GET on it.

Under candidate technologies for S600, I would list HTTP GET and the
output of the Web Services Description Working Group. It seems to me
that WSIL[3] is more a catalog of services and their descriptions,
which is a different kind of usage scenario IMO. BTW, I was looking at
the specification, and was wondering how generic and how Web
service-specific it was. I was wondering if something like RDDL[4]
could be used in such a way.


Regards,

Hugo

  1. http://www.w3.org/2002/ws/arch/2/wd-wsawg-scenarios-05012002.html#S503
  2. http://www.w3.org/2002/ws/arch/2/wd-wsawg-scenarios-05012002.html#S600
  3.
http://www-106.ibm.com/developerworks/webservices/library/ws-wsilspec.html
  4. http://www.rddl.org/
-- 
Hugo Haas - W3C
mailto:hugo@w3.org - http://www.w3.org/People/Hugo/ - tel:+1-617-452-2092
Received on Friday, 21 June 2002 10:11:24 GMT

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