MessagePortClient
interface MessagePortClient
Interface for handling messages received from the other end of a MessagePort channel.
A MessagePortClient implementation must be provided when creating a message channel using createMessageChannel, and its methods are invoked on the specified Executor.
A reference to a MessagePortClient is kept alive by its associated local MessagePort, which in turn is kept alive so long as the message channel is alive.
A client may be notified of multiple messages throughout its lifetime.