Creates an XML-RPC methodCall and returns a Message, ready to send, for that method call.
See build_request for serialization details.
If params is floating, it is consumed.
| uri |
URI of the XML-RPC service |
| method_name |
the name of the XML-RPC method to invoke at |
| params |
a Variant tuple |
|
a Message encoding the indicated XML-RPC request, or |