| Abstract
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Watchers are defined as entities that request (i.e., subscribe to)
information about a resource. There is fairly complex state
associated with these subscriptions. The union of the state for all
subscriptions to a particular resource is called the watcher
information for that resource. This state is dynamic, changing as
subscribers come and go. As a result, it is possible, and indeed
useful, to subscribe to the watcher information for a particular
resource. In order to enable this, a format is needed to describe the
state of watchers on a resource. This specification describes an XML
document format for such state.
Table of Contents
1 Introduction ........................................ 3
2 Terminology ......................................... 3
3 Structure of Watcher Information .................... 3
4 Computing Watcher Lists from the Document ........... 5
5 Example ............................................. 6
6 XML Schema .......................................... 7
7 Security Considerations ............................. 9
8 IANA Considerations ................................. 9
8.1 application/watcherinfo+xml MIME Registration ....... 9
8.2 URN Sub-Namespace Registration for
urn:ietf:params:xml:ns:watcherinfo ............................. 10
9 Contributors ........................................ 11
10 Acknowledgements .................................... 12
11 Authors Addresses ................................... 12
12 Normative References ................................ 12
13 Informative References .............................. 13
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