difficult we will backport critical fixes to the 3.12.x branch through December 31, 2021. (This
    commitment was originally through December 31, 2020; we have since extended it.)

 *  **TLSv1 and TLSv1.1 are no longer enabled by default.** Major web browsers are working towards
    removing these versions altogether in early 2020. If your servers aren't ready yet you can

    // Note that although we have two routes available, we only use one. The retry is permitted
    // because there are routes available, but it chooses the existing connection since it isn't
    // yet considered unhealthy.
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(1)
  }

  @ParameterizedTest
  @ArgumentsSource(ProtocolParamProvider::class)

        Request.Builder()
          .url(server.url("/"))
          .build(),
      )
    val response = call.execute()
    if (expectedProtocol == Protocol.HTTP_2) {
      // soft failure since client may not support depending on Platform
      Assume.assumeThat(response, matchesProtocol(Protocol.HTTP_2))
    }
    assertThat(response.protocol).isEqualTo(expectedProtocol)
    assertFailsWith<IOException> {