public final class PostFile {
  public static final MediaType MEDIA_TYPE_MARKDOWN
      = MediaType.get("text/x-markdown; charset=utf-8");

  private final OkHttpClient client = new OkHttpClient();

  public void run() throws Exception {
    File file = new File("README.md");

    Request request = new Request.Builder()
        .url("https://api.github.com/markdown/raw")
        .post(RequestBody.create(file, MEDIA_TYPE_MARKDOWN))

      .build()

  fun run() {
    try {
      val request = Request(server.url("/"))

      client.newCall(request).execute().use { response ->
        if (!response.isSuccessful) throw IOException("Unexpected code $response")

        println(response.request.url)
      }
    } finally {
      server.shutdown()
    }
  }
}

fun main() {
  DevServer().run()

import okhttp3.Request

class ParseResponseWithMoshi {
  private val client = OkHttpClient()
  private val moshi = Moshi.Builder().build()
  private val gistJsonAdapter = moshi.adapter(Gist::class.java)

  fun run() {
    val request =
      Request
        .Builder()
        .url("https://api.github.com/gists/c2a7c39532239ff261be")
        .build()
    client.newCall(request).execute().use { response ->

      return chain.proceed(chain.request());
    }
  };

  private final OkHttpClient client = new OkHttpClient.Builder()
      .addNetworkInterceptor(CHECK_HANDSHAKE_INTERCEPTOR)
      .build();

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

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

import okhttp3.MediaType.Companion.toMediaType
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.RequestBody
import okio.BufferedSink

class PostStreaming {
  private val client = OkHttpClient()

  fun run() {
    val requestBody =
      object : RequestBody() {
        override fun contentType() = MEDIA_TYPE_MARKDOWN

        override fun writeTo(sink: BufferedSink) {
          sink.writeUtf8("Numbers\n")

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

/**
 * Create UNIX domain sockets for MockWebServer and OkHttp and connect 'em together. Note that we
 * cannot do TLS over domain sockets.
 */
public class ClientAndServer {
  public void run() throws Exception {
    File socketFile = new File("/tmp/ClientAndServer.sock");
    socketFile.delete(); // Clean up from previous runs.

    MockWebServer server = new MockWebServer();

HTTPS
=====

OkHttp attempts to balance two competing concerns:

 * **Connectivity** to as many hosts as possible. That includes advanced hosts that run the latest versions of [boringssl](https://boringssl.googlesource.com/boringssl/) and less out of date hosts running older versions of [OpenSSL](https://www.openssl.org/).

  private final OkHttpClient client = new OkHttpClient.Builder()
      .addInterceptor(new LoggingInterceptor())
      .build();

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

    Response response = client.newCall(request).execute();

    Runnable setUpRunnable =
        new Runnable() {
          @Override
          public void run() {
            setUp[0] = true;
          }
        };

    boolean[] tearDown = {false};
    Runnable tearDownRunnable =
        new Runnable() {
          @Override
          public void run() {
            tearDown[0] = true;
          }
        };