}

    upgrade()

    assertThat(server.takeRequest().connectionIndex).isEqualTo(0)
    assertThat(server.takeRequest().connectionIndex).isEqualTo(0)
  }

  @Test
  fun cannotReuseConnectionAfterUpgrade() {
    upgrade()

    server.enqueue(MockResponse(body = "normal request"))
    client.newCall(Request(server.url("/"))).execute().use { response ->