记住，服务调用方并不知道服务的具体实现方式。
Remember, callers of your service don't know how you choose to implement your service.
任务完成后，将产生相应的结果，服务会返回到其调用方，并将此结果作为输出数据传递给调用方。
After the task is completed and there is a result, the service returns to its caller, passing the result as output data.
发起方(调用服务器)必须明确地对证书执行此检查。
The initiator (the calling server) has to specifically perform this check of the certificate.
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