Listener. open Async(CancellationToken cancellationToken) 方法
This method causes the communication listener to be opened. Once the Open completes, the communication listener becomes usable - accepts and sends messages.
public CompletableFuture<String> openAsync(CancellationToken cancellationToken)
CancellationToken object to indicate the cancellation status of the operation.
A CompletableFuture that represents outstanding operation. The result of the Task is the endpoint string.