HTTPR还提供了协议规则，以保证每条消息可以正好一次地传递到目的应用程序，或是如实地报告消息无法传递。

HTTPR also provides protocol rules making it possible to ensure that each message is delivered to its destination application exactly once or is reliably reported as undeliverable.

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应用程序对象所使用的键应该嵌入到规则中，在具有规则库的情况下，请确保无法轻易地对该键进行更改。

The key used for your application object will be embedded in your rules, making it difficult to change once you have a library of rules.

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让人无奈的是，它创立的这个模式，之后被应用于那些无法在规则内但实际只能依靠秘密证据定案的案件。

Alas, it created a template that was later applied to kinds of cases that would never normally have hinged on secret evidence.

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