JAX - RPC调用中的大多数代码是双向的，因此，在服务器上使用的相同代码也可在客户机上使用。

Most of the code within a JAX-RPC call is bidirectional, so the same code used on the server is also used on the client.

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对于双向ssl，我们需要客户机密钥和服务器密钥。

For mutual SSL, we'll need both client and server keys.

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客户端和服务器之间的交互完全基于双向传输的资源。

The interaction between a client and the server is solely based on a two-way transfer of resources.

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