Holds extra info about that backpressure server channel.
Represents the state of the link between the client and the backpressure server.
Holds state of the link.
Payload for opening a backpressure link.
Payload for backpressure requests.
Type of the backpressure request.
Payload for closing an existing backpressure link.
Type of the backpressure server channel.
Unique identifier for established backpressure links.