使用soap头信息块来交换非业务状态的信息(例如，相关器和消息id)。

Use SOAP header blocks to exchange non-business state information (for example, correlators and message ids).

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checkIncoming(如清单4所示)演示了如何定位头信息块，这是一个不可见的过程。

Shown in Listing 4, demonstrates how to locate a header block, a non-obvious process. This method will.

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signOut going(如清单2所示)演示了如何将一个头信息块添加到一个传出SOAP消息中。

Shown in Listing 2, demonstrates how to add a header block to an outgoing SOAP message. This method will.

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