An outbound call scenario is an Oracle Tuxedo program that invokes an external Web service through the SALT gateway. Figure 5‑2 depicts message streaming between an Oracle Tuxedo domain and a Web service application.

The following figure Message Conversion Plug-in Works in an Outbound Call Scenario

Figure 5-2 Message Conversion Plug-in Works in an Outbound Call Scenario

When an Oracle Tuxedo request buffer is delivered to the GWWS server, GWWS tries to find if there is a message conversion plug-in instance associated with the input message conversion of the target service. If there is an associated instance, GWWS invokes the customized function(*soap_out_tuxedo__CUSTBUF), implemented in the plug-in instance.

When a SOAP response message is returned from the external Web service application, GWWS tries to find if there is a message conversion plug-in instance associated with the output message conversion of the target service. If there is an associated instance, GWWS invokes the customized function (*soap_in_tuxedo__CUSTBUF), implemented in the plug-in instance.