val recordedRequest1 = server.takeRequest()
    assertThat(recordedRequest1.method).isEqualTo("POST")
    assertThat(recordedRequest1.body?.utf8()).isEqualTo(body)
    assertThat(recordedRequest1.headers["Authorization"]).isNull()
    val recordedRequest2 = server.takeRequest()
    assertThat(recordedRequest2.method).isEqualTo("POST")
    assertThat(recordedRequest2.body?.utf8()).isEqualTo(body)

    val response1 = client.newCall(request1).execute()
    assertThat(response1.body.string()).isEqualTo("ABC")
    val recordedRequest1 = server.takeRequest()
    assertThat(recordedRequest1.requestLine).isEqualTo("GET /foo HTTP/1.1")
    assertThat(recordedRequest1.connectionIndex).isEqualTo(0)
    assertThat(recordedRequest1.exchangeIndex).isEqualTo(0)
    val request2 = Request.Builder().url(server.url("/bar")).build()

 *  New: MockWebServer now supports client authentication (mutual TLS). Call `requestClientAuth()`
    to permit an optional client certificate or `requireClientAuth()` to require one.
 *  New: `RecordedRequest.getHandshake()` returns the HTTPS handshake of a request sent to
    `MockWebServer`.
 *  Fix: Honor the `MockResponse` header delay in MockWebServer.