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SOAP builds on the general XML-RPC web service concept and provides
a richer, albeit more complex, means for transferring typed data.
SOAP web services typically provide a Web Service Description Language
file (WSDL) that specifies the web service calls, data types, and
service URL. While ActionScript 3 does not provide direct support
for SOAP, you can construct a SOAP XML message “by hand,” post it
to the server, and then parse the results. However, for anything except
the simplest SOAP web service, you can probably save a significant amount
of development time using an existing SOAP library.
The Flex framework includes libraries for accessing SOAP web
services. In Flash Builder the library, rpc.swc, is automatically
included in Flex projects, since it is part of the Flex framework.
In Flash Professional, you can add the Flex framework.swc and rpc.swc
to the library path of a project and then access the Flex classes
with ActionScript.
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