XML-RPC is a protocol which uses XML messages to perform Remote Procedure Calls. The requests are encoded in XML format and sent via HTTP POST. The responsible of XML are embedded in the body of the HTTP response.
The XML-RPC is the combination of HTTP + XML + Remote Procedure Calls. It is a platform independent, diverse applications can communicate with one another. For example, a Java client can speak XML-RPC to a Sql server.
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