This specification defines service discovery method values for use in DNS Resource Record service fields. A method is first specified to query and retrieve a URL for metadata services.
Two metadata service types are then defined. Also an auxiliary method pattern for discovering a registration service to enable access to metadata services is described. The methods defined here are instances of the generic pattern defined within IETF RFCs for Dynamic Delegation Discovery Services (DDDS).
This specification therefore defines DDDS applications for metadata and metadata-registration services.