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Subject: WS-Eventing

FYI - A new WS-* specification: "BEA, Microsoft, and Tibco Release Web
Services Eventing (WS-Eventing) Specification [1]"


- The WS-Eventing specification "describes a protocol that allows Web
services to subscribe to or accept subscriptions for event notification

- An example request to create a subscription for storm warnings is used
to illustrate the notification protocol. 

- "Web services often want to receive messages when events occur in
other services and applications. A mechanism for registering interest is
needed because the set of Web services interested in receiving such
messages is often unknown in advance or will change over time." 

- The specification intends to define a "means to create and delete
event subscriptions, to define expiration for subscriptions, and to
allow them to be renewed. 

- It defines how an event sink can determine which subscriptions it is
receiving notifications for, and how one event sink can subscribe on
behalf of another. 

- The specification is meant to leverage other Web service
specifications for secure, reliable, transacted message delivery.

Kind Regards,
Joe Chiusano
Booz | Allen | Hamilton

[1] http://xml.coverpages.org/ni2004-01-07-a.html

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