RE: [Bug 8286] New: description of Subscription End ambiguous

I agree with this proposal except for the part where support for the SubscriptionEnd operation is required. During our earlier conversations, we determined that support for the SubscriptionEnd operation is optional for the Event Source. Given that, I suggest an amended proposal (change MUST to MAY):

"If the event source terminates a subscription unexpectedly and the wse:EndTo EPR was present in the Subscribe message for that subscription (see 4.1 Subscribe), the SubscriptionEnd message MAY be sent to the endpoint referenced by that EPR. The message MUST be of the following form:"

-----Original Message-----
From: public-ws-resource-access-notifications-request@w3.org [mailto:public-ws-resource-access-notifications-request@w3.org] On Behalf Of bugzilla@wiggum.w3.org
Sent: Friday, November 13, 2009 1:44 PM
To: public-ws-resource-access-notifications@w3.org
Subject: [Bug 8286] New: description of Subscription End ambiguous

http://www.w3.org/Bugs/Public/show_bug.cgi?id=8286

           Summary: description of Subscription End ambiguous
           Product: WS-Resource Access
           Version: PR
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Eventing
        AssignedTo: public-ws-resource-access-notifications@w3.org
        ReportedBy: gilbert.pilz@oracle.com
         QAContact: public-ws-resource-access-notifications@w3.org


Section 4.5 "Subscription End" starts with the following paragraph:

"If the event source terminates a subscription unexpectedly, SubscriptionEnd SOAP message SHOULD be sent to the endpoint reference indicated when the subscription was created (see 4.1 Subscribe). This endpoint reference MUST refer to an endpoint that supports the SubscriptionEndPortType portType. The message MUST be of the following form:"

The "SHOULD" in this sentence is ambiguous. Does it refer to the act of transmitting the message or does it refer to where the message is transmitted?
In both cases this should be a "MUST"; the SubscriptionEnd message MUST be transmitted, and it MUST be transmitted to the endpoint referenced by the EndTo EPR.

The sentence "This endpoint reference MUST refer to an endpoint that supports the SubscriptionEndPortType portType" is inappropriate and redundant; this is a constraint on the event sink, not the event source. This same constraint is already documented in the description of /wse:Subscribe/wse:EndTo.

Proposal: replace the above paragraph with the following:

"If the event source terminates a subscription unexpectedly and the wse:EndTo EPR was present in the Subscribe message for that subscription (see 4.1 Subscribe), the SubscriptionEnd message MUST be sent to the endpoint referenced by that EPR. The message MUST be of the following form:"


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Received on Sunday, 3 January 2010 17:18:12 UTC