import javax.security.auth.callback.Callback
import javax.security.auth.callback.CallbackHandler
import javax.security.auth.callback.PasswordCallback
import javax.security.auth.callback.UnsupportedCallbackException
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.internal.SuppressSignatureCheck
import okhttp3.internal.platform.Platform

/**
 * Example of using a hardware key to perform client auth.

import java.util.Arrays
import mockwebserver3.MockResponse
import mockwebserver3.MockWebServer
import mockwebserver3.junit5.StartStop
import okhttp3.HttpUrl
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.OkHttpClient
import okhttp3.OkHttpClientTestRule
import okhttp3.Protocol
import okhttp3.Request
import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.Response
import okhttp3.TestUtil.assumeNotWindows

  private final HttpUrl baseUrl = HttpUrl.get("https://slack.com/api/");
  private final OkHttpClient httpClient;
  private final Moshi moshi;

  public final String clientId;
  public final String clientSecret;
  public final int port;

  public SlackApi(String clientId, String clientSecret, int port) {
    this.httpClient = new OkHttpClient.Builder()
        .build();
    this.moshi = new Moshi.Builder()

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.survey.ssllabs

import com.squareup.moshi.Moshi
import okhttp3.Call
import okhttp3.OkHttpClient
import okhttp3.survey.types.Client
import okhttp3.survey.types.SuiteId
import retrofit2.Retrofit
import retrofit2.converter.moshi.MoshiConverterFactory

class SslLabsClient(
  callFactory: Call.Factory,
) {

import assertk.assertThat
import assertk.assertions.isEqualTo
import assertk.assertions.matches
import mockwebserver3.MockResponse
import mockwebserver3.MockWebServer
import mockwebserver3.junit5.StartStop
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.testing.PlatformRule
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

/**
 * OkHttp.
 *
 * https://square.github.io/okhttp/

Applications that want to use the global SSL context with OkHttp should configure their
OkHttpClient instances with the following:

```java
okHttpClient.setSslSocketFactory(HttpsURLConnection.getDefaultSSLSocketFactory());
```

A simpler solution is to avoid the shared default SSL socket factory. Instead, if you
need to customize SSL, do so for your specific OkHttpClient instance only.

##### Synthetic headers have changed

import okhttp3.Connection;
import okhttp3.EventListener;
import okhttp3.Handshake;
import okhttp3.HttpUrl;
import okhttp3.OkHttpClient;
import okhttp3.Protocol;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.ResponseBody;

public final class PrintEvents {
  private final OkHttpClient client = new OkHttpClient.Builder()
      .eventListenerFactory(PrintingEventListener.FACTORY)
      .build();

import java.io.File
import java.io.IOException
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.MultipartBody
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.RequestBody.Companion.asRequestBody

class PostMultipart {
  private val client = OkHttpClient()

  fun run() {
    // Use the imgur image upload API as documented at https://api.imgur.com/endpoints/image
    val requestBody =

```kotlin
testImplementation("com.squareup.okhttp3:okhttp-dnsoverhttps:5.3.0")
```

### Usage

```
  val appCache = Cache(File("cacheDir", "okhttpcache"), 10 * 1024 * 1024)
  val bootstrapClient = OkHttpClient.Builder().cache(appCache).build()

  val dns = DnsOverHttps.Builder().client(bootstrapClient)
    .url("https://dns.google/dns-query".toHttpUrl())

These are the primary classes involved with establishing, sharing, and terminating connections:

 * **RealConnectionPool** manages reuse of HTTP and HTTP/2 connections for reduced latency. Every OkHttpClient has one, and its lifetime spans the lifetime of the OkHttpClient.