assertThat(reader.readLine()).isEqualTo("hello world")
    val request = server.takeRequest()
    assertThat(request.requestLine).isEqualTo("GET / HTTP/1.1")
    assertThat(request.getHeader("Accept-Language")).isEqualTo("en-US")

    // Server has no more requests.
    assertThat(server.takeRequest(100, TimeUnit.MILLISECONDS)).isNull()
  }

  @Test
  fun redirect() {
    server.enqueue(

    }
    val c0e0 = server.takeRequest()
    assertThat(c0e0.connectionIndex).isEqualTo(0)
    assertThat(c0e0.exchangeIndex).isEqualTo(0)
    val c0e1 = server.takeRequest()
    assertThat(c0e1.connectionIndex).isEqualTo(0)
    assertThat(c0e1.exchangeIndex).isEqualTo(1)
    val c1e0 = server.takeRequest()
    assertThat(c1e0.connectionIndex).isEqualTo(1) // Fresh connection.

    val requestA = Request(server.url("/"))
    val responseA = client.newCall(requestA).execute()

    assertThat(responseA.body.string()).isEqualTo("a")
    assertThat(server.takeRequest().exchangeIndex).isEqualTo(0)

    // Give the socket a chance to become stale.
    connection!!.idleAtNs -= IDLE_CONNECTION_HEALTHY_NS
    Thread.sleep(250)

    val requestB =
      Request(

    val response = request.send()
    assertThat(response.status).isEqualTo(200)
    assertThat(response.contentAsString).isEqualTo("hello, Jetty HTTP Client")

    val recorded = server.takeRequest()
    assertThat(recorded.headers["Accept"]).isEqualTo("text/plain")
    assertThat(recorded.headers["Accept-Encoding"]).isEqualTo("gzip")
    assertThat(recorded.headers["Connection"]).isNull()

    val response = httpClient.send(request, BodyHandlers.ofString())
    assertThat(response.statusCode()).isEqualTo(200)
    assertThat(response.body()).isEqualTo("hello, Java HTTP Client")

    val recorded = server.takeRequest()
    assertThat(recorded.headers["Accept"]).isEqualTo("text/plain")
    assertThat(recorded.headers["Accept-Encoding"]).isNull() // No built-in gzip.

    assertThat(get(url).body.string()).isEqualTo("B")
    assertThat(server.takeRequest().headers["If-None-Match"]).isNull()
    assertThat(server.takeRequest().headers["If-None-Match"]).isEqualTo("v1")
    assertThat(server.takeRequest().headers["If-None-Match"]).isEqualTo("v1")
    assertThat(server.takeRequest().headers["If-None-Match"]).isEqualTo("v2")
  }

  @Test

    val call = client.newCall(Request(url))
    val response = call.execute()
    assertThat(response.body.string()).isEqualTo("this was the 2nd request on IPv4")
    assertThat(serverIpv4.takeRequest().exchangeIndex).isEqualTo(0)
    assertThat(serverIpv4.takeRequest().exchangeIndex).isEqualTo(1)
  }

        .Builder()
        .url(webServer.url("/"))
        .build()
    val response = client.newCall(regularRequest).execute()
    response.close()
    assertThat(webServer.takeRequest().exchangeIndex).isEqualTo(0)
    assertThat(webServer.takeRequest().exchangeIndex).isEqualTo(1)
  }

  /** https://github.com/square/okhttp/issues/5705  */
  @Test
  fun closeWithoutSuccessfulConnect() {
    val request =

        .build()
    val response = client.newCall(request).execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.body.string()).isEqualTo("hello, OkHttp")

    val recorded = server.takeRequest()
    assertThat(recorded.headers["Accept"]).isEqualTo("text/plain")
    assertThat(recorded.headers["Accept-Encoding"]).isEqualTo("gzip")
    assertThat(recorded.headers["Connection"]).isEqualTo("Keep-Alive")

        .build()
    val request =
      Request
        .Builder()
        .url(server.url("/"))
        .get()
        .build()
    client.newCall(request).execute()
    val recordedRequest = server.takeRequest()
    assertThat(recordedRequest.method).isEqualTo("POST")
    assertThat(recordedRequest.body?.utf8()).isEqualTo("abc")
  }

  @Test
  fun applicationInterceptorsRewriteRequestToServer() {