

通过dubbo-compiler的插件生成了接口，会自动生成xxxAsync()方法，但是它只是通过CompletableFuture.completedFuture()包装了同步方法，它仍然会阻塞consumer的业务线程。这么实现的目的是什么？

![image](https://user-images.githubusercontent.com/18373569/216303859-4c8fe6e5-428b-417c-baa5-df4aa444719c.png)

![image](https://user-images.githubusercontent.com/18373569/216304057-e564e268-14e6-40e3-8244-7380fd9c9c85.png)


## Ask your question here
我当前使用dubbo 3.1.4的triple协议(同时使用了IDL+protobuf)，想提供CompletableFuture<Result>返回值的异步调用，应该怎么做？

客户端如果不使用proxy=“nativestub”，会抛出以下错误：

This serialization only support google protobuf messages, but the actual input type is :java.util.concurrent.CompletableFuture

客户端如果使用proxy=“nativestub”，调用kickOffDeviceAsync(),实际上会调用CompletableFuture.completedFuture(kickOffDevice(request));.如此就会造成阻塞了，没有达到异步的目的





this.stream = stream;
        this.acceptEncoding = acceptEncoding;
    }
    
    @Override
    public void onHeader(Map<String, Object> requestMetadata) {
        this.requestMetadata = requestMetadata;
        if (serviceDescriptor == null) {
            responseErr(
                TriRpcStatus.UNIMPLEMENTED.withDescription("Service not found:" + serviceName));
            return;
        }
        startCall();
    }
    protected void startCall() {
        RpcInvocation invocation = buildInvocation(methodDescriptor);
        listener = startInternalCall(invocation, methodDescriptor, invoker);
    }
    @Override
    public final void request(int numMessages) {
        stream.request(numMessages);
    }
    @Override
    public final void sendMessage(Object message) {
        if (closed) {
            throw new IllegalStateException("Stream has already canceled");
        }
        
        doSendMessage(message);
    }