Name for HTTP Request+Response

Question

There\'s one thing I haven\'t found in rfc 2616 and that\'s a \"canonical\" name for a request/response pair. Is there such thing?

  4.1 Message Types

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Answer 1

The spec calls them "exchanges" (or "request/response exchanges"),

In HTTP/1.0, most implementations used a new connection for each
request/response exchange. In HTTP/1.1, a connection may be used for one or more request/response exchanges.