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Asynchronous Web Service using WS-Addressing

WS-Addressing provides way to specify message addressing information independent of transport layer. WS-Addressing provides a way to specify delivery, reply-to, and fault-handler addressing information in a SOAP envelope. WS-Addressing can be used in conjunction with other specifications such as WS-Security to authenticate and WS-Policy to define policies for the service.

WS-Addressing has two key constructs or artifacts:

  • Endpoint reference
  • Message information headers

Endpoint references in the WS-Addressing specification contain the information needed to identify/reference a Web service endpoint. Endpoint references can also be used to provide addresses for individual messages sent to and from Web services.

The WS-Addressing specification defines a set of message information headers that allow uniform addressing of messages independent of underlying transport. These message information headers convey end-to-end message characteristics, including addressing for source and destination endpoints as well as message identity. The WS-Addressing specification comes with WS-Addressing schema, which has complex types defined for endpoint references and messaging properties.

WS-Addressing specification provides a standard mechanism to send message information independent of the transport layer.

WS-Addressing provides number of benefits that include the transport layer not being restricted to HTTP, and working in conjunction with other WS-* specifications it can be used for different patterns such as request/response, one-way, or conversational Web services.

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