val socketHandler =
      MockSocketHandler()
        .apply {
          receiveRequest("client says hello\n")
          sendResponse("server says hello\n")
          receiveRequest("client says goodbye\n")
          sendResponse("server says goodbye\n")
          exhaustResponse()
          exhaustRequest()
        }
    server.enqueue(socketHandler.upgradeResponse())

    client

        .socketHandler(body1)
        .build(),
    )
    val body =
      MockSocketHandler()
        .sendResponse("response body\n")
        .exhaustResponse()
        .receiveRequest("request body\n")
        .exhaustRequest()
    server.enqueue(
      MockResponse
        .Builder()
        .clearHeaders()
        .socketHandler(body)
        .build(),
    )

    component headers.

 *  Breaking: Change `RecordedRequest.body` from a mutable `Buffer` to an immutable `ByteString`.

 *  Breaking: Adopt Okio's new `Socket` interface for `MockResponse.socketHandler`.

Note that any _Breaking_ changes above impact only APIs introduced in earlier 5.0.0-alpha releasees.
We don't break binary compatibility with non-alpha APIs.


## Version 5.0.0-alpha.16

_2025-05-29_