client =
      client.newBuilder()
        .protocols(Arrays.asList(Protocol.HTTP_1_1))
        .build()
    assertContent("A", getResponse(newRequest("/")))
  }

  @Test
  fun setProtocolsWithoutHttp11() {
    assertFailsWith<IllegalArgumentException> {
      OkHttpClient.Builder()
        .protocols(Arrays.asList(Protocol.HTTP_2))
    }
  }

  @Test
  fun setProtocolsWithNull() {