client =
      client
        .newBuilder()
        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),
          handshakeCertificates.trustManager,
        ).hostnameVerifier(RecordingHostnameVerifier())
        .build()
    val response = getResponse(newRequest("/foo"))
    assertContent("this response comes via HTTPS", response)
    val request = server.takeRequest()

    server.enqueue(MockResponse.Builder().failHandshake().build())
    server.enqueue(MockResponse(body = "abc"))
    client =
      client
        .newBuilder()
        .hostnameVerifier(RecordingHostnameVerifier())
        .connectionSpecs(
          // Attempt RESTRICTED_TLS then fall back to MODERN_TLS.
          listOf(
            ConnectionSpec.RESTRICTED_TLS,
            ConnectionSpec.MODERN_TLS,