首先，我希望让开发人员在使用异步消息传递机制(无论是否使用Web Service)时，能够以一种固定的方式编写其服务层。

First of all I wanted to formalize the way Service Layer classes were written when using asynchronous messaging (regardless of Web Services).

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应用程序消息通过一个简单的回调机制异步传递，并且只以字节数组有效负载的格式提供。

Application messages are delivered asynchronously through a simple callback mechanism and are provided only in byte array payload format.

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