1.7 Versioning and Capability Negotiation

The WS-Management Protocol defines a simple request-response operation called "Identify" to facilitate the process of finding the protocol version or versions supported by the service.<1>

Negotiation of Robust-Connection/full-duplex support between client and server proceeds by a different mechanism. When sending the first message on an operation, the client indicates that it supports Robust-Connection/full-duplex support by including the OperationId field (see section 2.2.4.45). In that case, the server also includes the OperationId field on its first response message indicating the same. Once the capabilities are stored, the client and server will only issue Robust-connections/full-duplex messages if both parties support it.