WS-Discovery message semantics

WS-Discovery defines the following message semantics for managing and discovering the availability of networked services.

See WS-Discovery terms for explanation of some common terms.

Hello

A service must send a one-way multicast Hello message when it joins a network, or its metadata changes.

Probe

To discover services, optionally limited to a particular service type or scope, a client sends a Probe message. Probe can be unicast or multicast.

Probe match

When a service receives a matching Probe, it must respond with a Probe Match message.

Resolve

A client may send a one-way multicast Resolve message to locate service address(es).

Resolve match

When a service matches a Resolve message, it must respond with a unicast Resolve Match message.

Bye

A service should send a one-way multicast Bye message when preparing to leave a network.