The XML Configuration Access Protocol (XCAP) is an application layer protocol that allows a client to read, write, and modify application configuration data stored in XML format on a server.
XCAP maps XML document sub-trees and element attributes to HTTP URIs, so that these components can be directly accessed by clients using HTTP protocol. An XCAP server is used by XCAP clients to store data like buddy lists and presence policy in combination with a SIP Presence server that supports PUBLISH, SUBSCRIBE and NOTIFY methods to provide a complete SIP SIMPLE server solution.
The following operations are supported via XCAP protocol in a client-server interaction:
The operations above can be executed on the following items:
The XCAP addressing mechanism is based on XPath, that provides the ability to navigate around the XML tree.
The following applications are provided by XCAP, by using specific auid (Application Unique Id):