is there any way to specify custom diameter-messages (with custom commands, attributes) using XML-mapping?
Or DIAMETER API gives possibility to create new Attributes/Commands programmaticaly only (using define() method)?
OCSG diameter plugin doesn't provided any option to customize diameter messages. Only way out is to use PDS to create your own diameter plugin and deploy on OCSG. Based diamater library is provided by OCSG. You need to build only classes specific to your requirements.