Messages Functions

Communicate as a network queue using the publish-subscribe model. Use messages to send commands, status updates, and stream data between your systems and server.

Open

Creates a message session with the server.

Close

Terminates the message session with the server.

Publish

Writes a message to a topic, which immediately sends the message to subscribers of the topic.

Read

Returns a message from the queue.

Subscribe

Registers a session to receive messages published to a specific topic.

Unsubscribe

Unregisters a session from a specific topic to stop receiving messages.

Flush

Clears all queued messages associated with the session from the queue.

Message Properties

Provides access to properties of an open SystemLink message session.