||Note: Core Server Facet has been deprecated as it is superseded with Core 2017 Server Facet in v1.04.
This Facet defines the core functionality required for any UA Server implementation. The core functionality includes the ability to discover endpoints, establish secure communication channels, create Sessions, browse the AddressSpace and read and/or write to Attributes of Nodes. The key requirements are: support for a single Session, support for the Server and Server Capabilities Object, all mandatory Attributes for Nodes in the AddressSpace, and authentication with UserName and Password. This Facet has been extended with additional Base Information ConformanceUnits. They are optional to provide backward compatibility. In the future the ConformanceUnit “Base Info Server Capabilities” will become required, and so it is highly recommended that all Servers support it. For broad applicability, it is recommended that Servers support multiple transport and security Profiles.