val request = Request(server.url("/"))
    val response1 = client.newCall(request).execute()
    val response2 = client.newCall(request).execute()
    response1.body.string() // Discard the response body.
    response2.body.string() // Discard the response body.
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(0)
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(1)
  }

  @Test