The application data section contains all actual message data (payload) and any additional headers, such as the transmission header or the IMS information header.
应用程序数据部分包含所有实际消息数据(有效负载)和任何附加头，比如传输头或IMS信息头。
The additional information need to correlate request and response in the HTTPR asynchronous (or pseudo-synchronous) environment is put into the HTTPR message context header.
需要将httpr异步(或伪同步)环境中的请求与响应关联起来的附加信息被放进了HTTPR消息上下文头中。
Oftentimes you will not need to specify any additional information beyond the request method and header fields.
除了请求方法和头字段外，通常不需要指定任何其他信息。
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