XmlRpcMethodResponse * vortex_xml_rpc_invoke_sync VortexChannel channel,
XmlRpcMethodCall method_call
 

Perform a synchronous XML-RPC invocation.

Parameters:
channel The channel where the invocation will be performed.
method_call The invocator object, representing the method call.
Returns:
A XmlRpcMethodResponse with the reply or NULL if fails.