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Subject: RE: Issue 122 - WS-Discovery - Remove special "ad-hoc" scope


Please ignore this thread. I will reassign this to a new issue 123. Thanks.

 

From: Ram Jeyaraman [mailto:Ram.Jeyaraman@microsoft.com]
Sent: Monday, December 15, 2008 6:57 PM
To: ws-dd@lists.oasis-open.org
Subject: [ws-dd] Issue 122 - WS-Discovery - Remove special "ad-hoc" scope

 

This issue is assigned the number 122. For further discussions on this issue, please refer to this issue number or use this thread.

 

From: Vipul Modi
Sent: Monday, December 15, 2008 4:06 PM
To: Ram Jeyaraman
Subject: New Issue: WS-Discovery: Remove special "ad-hoc" scope

 

Spec: WS-Discovery

Version: Working Draft 04

Details:

Section 4.1 Hello specifies that if a service does not have a Scope it is said to be in an “adhoc” scope http://docs.oasis-open.org/ws-dd/discovery/2008/09/adhoc.

 

The absence of the Scopes in the Hello may not mean that a Target Service does not have any scopes. The Target Service may not advertise the scopes because of the security reason or because of the size limitation. In such case it is difficult for the client to assume that service is in an “ad-hoc” scope. What happens when the Probe include this special value, should all services that advertised empty Scopes respond or should the services that do not have any scopes configured respond? Furthermore there does not appear to be any scenario for this special treatment for the empty Scopes field. It is seems to be an unused feature that is not well understood and defined.

 

Proposal:

Remove the special “ad-hoc” scope.

 

Section 4.1

/s:Envelope/s:Body/*/d:Scopes

Unordered set of Scopes the Target Service (or Discovery Proxy) is in, which MAY be of more than one URI scheme. If included, MUST be a set of absolute URIs, and contained URIs MUST NOT contain white space. If omitted or empty no implied value implied value is a set that includes "http://docs.oasis-open.org/ws-dd/discovery/2008/09/adhoc".

In a managed mode, all Scopes SHOULD be included.

 



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