UA Part 7: Profiles - 6.6.2 Core Server Facet

6.6.2 Core Server Facet

Table 24describes the details of the Core ServerFacet. This Facet defines the core functionality required for any UA Serverimplementation. The core functionality includes the ability to discover endpoints, establish secure communication channels, create Sessions, browse the AddressSpaceand read and/or write to Attributesof Nodes. The key requirements are: support for a single Session, support for the Serverand ServerCapabilities Object, all mandatory Attributesfor Nodesin 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 ServerCapabilities” will become required, and so it is highly recommended that all Serverssupport it. For broad applicability, it is recommended that Serverssupport multiple transport and security Profiles.

Table 24– Core Server Facet

Group	Conformance Unit / **ProfileTitle**	Optional
Profile	SecurityPolicy – None	False
Profile	User Token – User Name Password ServerFacet	False
Address Space Model	Address Space Base	False
Attribute Services	AttributeRead	False
Attribute Services	AttributeWrite Index	True
Attribute Services	AttributeWrite Values	True
Base Information	Base Info Core Structure	False
Base Information	Base Info OptionSet	True
Base Information	Base Info Placeholder Modelling Rules	True
Base Information	Base Info ServerCapabilities	True
Base Information	Base Info ValueAsText	True
Discovery Services	DiscoveryFind ServersSelf	False
Discovery Services	DiscoveryGet Endpoints	False
Security	Security – No Application Authentication	True
Security	Security Administration	True
Session Services	SessionBase	False
Session Services	SessionGeneral ServiceBehaviour	False
Session Services	SessionMinimum 1	False
View Services	View Basic	False
View Services	View Minimum Continuation Point 01	False
View Services	View RegisterNodes	False
View Services	View TranslateBrowsePath	False