A one-way operation is a communication in one direction and thus has no corresponding SOAP message responses. But as the HTTP is used in the transfer protocol of the one-way messages, the Web Services client waits for an HTTP response, the HTTP body of which does not have a SOAP message. On the other hand, for the one-way operations for Web Services Implementation Class, the service-side JAX-WS engine returns the HTTP response as an HTTP status code 202 Accepted before invoking a method belonging to Web Services Implementation Class.

The following figure shows the sequence of a one-way operation

Figure 10-9 Sequence of a one-way operation

Organization of this section

10.22.1 Notes on one-way operations