This class is in the `logging-interceptor` artifact.
 *  New: `Headers.Builder.addUnsafeNonAscii()` allows non-ASCII values to be added without an
    immediate exception.
 *  New: Headers can be redacted in `HttpLoggingInterceptor`.
 *  New: `Headers.Builder` now accepts dates.
 *  New: OkHttp now accepts `java.time.Duration` for timeouts on Java 8+ and Android 26+.

  }

  @Test
  fun upgradeRefusedByServer() {
    server.enqueue(MockResponse(body = "normal request"))
    val requestWithUpgrade =
      Request
        .Builder()
        .url(server.url("/"))
        .header("Connection", "upgrade")
        .build()
    client.newCall(requestWithUpgrade).execute().use { response ->
      assertThat(response.code).isEqualTo(200)
      assertThat(response.socket).isNull()

  private val client: OkHttpClient =
    OkHttpClient
      .Builder()
      .cache(
        Cache(
          directory = cacheDirectory,
          // 1 MiB.
          maxSize = 10L * 1024L * 1024L,
        ),
      ).build()

  fun run() {
    val request =
      Request
        .Builder()
        .url("http://publicobject.com/helloworld.txt")
        .build()

    val response1Body =

    server.start();

    OkHttpClient client = new OkHttpClient.Builder()
        .socketFactory(new UnixDomainSocketFactory(socketFile))
        .protocols(Collections.singletonList(Protocol.H2_PRIOR_KNOWLEDGE))
        .build();

    Request request = new Request.Builder()
        .url("http://publicobject.com/helloworld.txt")
        .build();

    try (Response response = client.newCall(request).execute()) {

      }
    };

    OkHttpClient client = new OkHttpClient.Builder()
        .addNetworkInterceptor(chain -> {
          Response originalResponse = chain.proceed(chain.request());
          return originalResponse.newBuilder()
              .body(new ProgressResponseBody(originalResponse.body(), progressListener))
              .build();
        })
        .build();

    try (Response response = client.newCall(request).execute()) {

    Collection<ProducedArtifact> getArtifacts();

    @Nonnull
    static ArtifactInstallerRequestBuilder builder() {
        return new ArtifactInstallerRequestBuilder();
    }

    @Nonnull
    static ArtifactInstallerRequest build(Session session, Collection<ProducedArtifact> artifacts) {
        return builder()
                .session(requireNonNull(session, "session cannot be null"))

fun main() {
  val client =
    OkHttpClient
      .Builder()
      .addInterceptor(BrotliInterceptor)
      .build()

  sendRequest("https://httpbin.org/brotli", client)
  sendRequest("https://httpbin.org/gzip", client)
}

private fun sendRequest(
  url: String,
  client: OkHttpClient,
) {
  val req = Request.Builder().url(url).build()

  client.newCall(req).execute().use {
    println(it.body.string())

        .sslSocketFactory(certificates.sslSocketFactory(), certificates.trustManager)
        .build()
  }

  fun run() {
    showUrl("https://squareup.com/robots.txt")
    showUrl("https://publicobject.com/helloworld.txt")
  }

  private fun showUrl(url: String) {
    val request = Builder().url(url).build()
    client
      .newCall(request)
      .execute()
      .use { response ->

    val largeHeaders =
      Headers
        .Builder()
        .apply {
          repeat(32) {
            add("name-$it", "value-$it-" + "0".repeat(1024))
          }
        }.build()
    val call2 =
      client.newCall(
        Request
          .Builder()
          .url(server.url("/"))
          .headers(largeHeaders)
          .build(),
      )

    val exception =

  public PreemptiveAuth() {
    client = new OkHttpClient.Builder()
        .addInterceptor(
            new BasicAuthInterceptor("publicobject.com", "jesse", "password1"))
        .build();
  }

  public void run() throws Exception {
    Request request = new Request.Builder()
        .url("https://publicobject.com/secrets/hellosecret.txt")
        .build();

    try (Response response = client.newCall(request).execute()) {