assumeNotWindows()
    server.enqueue(
      MockResponse
        .Builder()
        .body("Hello!")
        .setHeader("Content-Type", PLAIN)
        .build(),
    )
    val response = client.newCall(request().build()).execute()
    assertThat(response.body).isNotNull()
    response.body.bytes()
    logRecorder
      .assertLogMatch(Regex("""callStart: Request\{method=GET, url=$url\}"""))

    val request =
      Request
        .Builder()
        .url("https://square.com/".toHttpUrl())
        .tag(Integer::class, 5 as Integer)
        .tag(String::class, "hello")
        .build()
    val call = client.newCall(request)

    // Check the Kotlin-focused APIs.
    assertThat(call.tag(String::class)).isEqualTo("hello")
    assertThat(call.tag(Integer::class)).isEqualTo(5)
    assertThat(call.tag(Boolean::class)).isNull()

    val client =
      clientTestRule
        .newClientBuilder()
        .sslSocketFactory(clientCertificates.sslSocketFactory(), clientCertificates.trustManager)
        .build()

    val call = client.newCall(Request(server.url("/")))
    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.handshake!!.cipherSuite).isNotNull()
    assertThat(response.handshake!!.tlsVersion).isNotNull()

    server.useHttps(socketFactory)
    server.requestClientAuth()
    server.enqueue(
      MockResponse
        .Builder()
        .body("abc")
        .build(),
    )
    val call = client.newCall(Request.Builder().url(server.url("/")).build())
    val response = call.execute()
    assertThat(response.handshake!!.peerPrincipal)
      .isEqualTo(X500Principal("CN=Local Host"))

    val response1 = client.newCall(request1).execute()
    assertThat(response1.code).isEqualTo(401)
    assertThat(response1.body.string())
      .isEqualTo("{\"error\":{\"message\":\"No auth credentials found\",\"code\":401}}")

    val request2 = request1.newBuilder().header("Authorization", "XYZ").build()
    val response2 = client.newCall(request2).execute()
    processResponse(response2, listener)

  }

  @Test
  fun testTlsv13Works() {
    enableTls()

    server.enqueue(MockResponse(body = "abc"))

    val request = Request(server.url("/"))

    val response = client.newCall(request).execute()

    response.use {
      assertEquals(200, response.code)
      assertEquals(TlsVersion.TLS_1_3, response.handshake?.tlsVersion)
      assertEquals(Protocol.HTTP_2, response.protocol)

    // The request should complete successfully.
    server.enqueue(
      MockResponse
        .Builder()
        .body("abc")
        .build(),
    )
    val call1 =
      client.newCall(
        Request
          .Builder()
          .url(server.url("/"))
          .build(),
      )
    val response1 = call1.execute()
    assertThat(response1.body.string()).isEqualTo("abc")
  }

  }

  @Test
  fun testMockWebServer() {
    server.enqueue(MockResponse(body = "abc"))
    server.start()

    client.newCall(Request(url = server.url("/"))).execute().use {
      assertThat(it.body.string()).isEqualTo("abc")
    }
  }

  @Test
  fun testExternalSite() {
    client.newCall(Request(url = "https://google.com/robots.txt".toHttpUrl())).execute().use {
      assertThat(it.code).isEqualTo(200)
    }
  }

  private val server = MockWebServer()

  val request by lazy { Request(server.url("/")) }

  @Test
  fun suspendCall() {
    runTest {
      server.enqueue(MockResponse(body = "abc"))

      val call = client.newCall(request)

      call.executeAsync().use {
        withContext(Dispatchers.IO) {
          assertThat(it.body.string()).isEqualTo("abc")
        }
      }
    }
  }

  @Test
  fun timeoutCall() {

    client.newCall(request).execute().use {
      assertThat(it.protocol).isEqualTo(Protocol.HTTP_2)
      assertThat(it.handshake!!.tlsVersion).isEqualTo(TlsVersion.TLS_1_3)
    }
  }

  @Test
  @Disabled
  fun testGoogle() {
    assumeNetwork()

    val request = Request.Builder().url("https://google.com/robots.txt").build()

    client.newCall(request).execute().use {