then apps are responsible for calling `OkHttp.initialize(applicationContext)` in `Application.onCreate`.

OkHttp depends on [Okio][okio] for high-performance I/O and the [Kotlin standard library][kotlin]. Both are small libraries with strong backward-compatibility.

We highly recommend you keep OkHttp up-to-date. As with auto-updating web browsers, staying current

import assertk.assertions.isNotNull
import assertk.assertions.isNull
import okhttp3.HttpUrl.Companion.defaultPort
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
import okio.buffer
import okio.source
import org.junit.jupiter.params.ParameterizedTest
import org.junit.jupiter.params.provider.ArgumentsSource

/** Runs the web platform URL tests against Java URL models.  */
class WebPlatformUrlTest {

import mockwebserver3.SocketEffect
import mockwebserver3.SocketEffect.CloseSocket
import mockwebserver3.SocketEffect.CloseStream
import mockwebserver3.SocketEffect.ShutdownConnection
import okio.Buffer
import okio.ByteString

internal fun Dispatcher.wrap(): mockwebserver3.Dispatcher {
  if (this is QueueDispatcher) return this.delegate

  val delegate = this
  return object : mockwebserver3.Dispatcher() {

import java.net.ProtocolException
import java.util.Random
import kotlin.test.assertFailsWith
import okhttp3.internal.format
import okio.Buffer
import okio.ByteString
import okio.ByteString.Companion.EMPTY
import okio.ByteString.Companion.decodeHex
import okio.ByteString.Companion.encodeUtf8
import okio.ByteString.Companion.toByteString
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.Test

class WebSocketReaderTest {

package okhttp3.internal.http

import java.io.IOException
import okhttp3.Headers
import okhttp3.Request
import okhttp3.Response
import okhttp3.Route
import okhttp3.internal.connection.RealCall
import okio.Sink
import okio.Socket
import okio.Source

/** Encodes HTTP requests and decodes HTTP responses. */
interface ExchangeCodec {
  /** The connection or CONNECT tunnel that owns this codec. */
  val carrier: Carrier

import okhttp3.internal.ws.WebSocketProtocol.PAYLOAD_LONG
import okhttp3.internal.ws.WebSocketProtocol.PAYLOAD_SHORT
import okhttp3.internal.ws.WebSocketProtocol.toggleMask
import okio.Buffer
import okio.BufferedSource
import okio.ByteString

/**
 * An [RFC 6455][rfc_6455]-compatible WebSocket frame reader.
 *
 * This class is not thread safe.
 *
 * [rfc_6455]: http://tools.ietf.org/html/rfc6455
 */

import java.security.Security
import okhttp3.Cache
import okhttp3.OkHttpClient
import okhttp3.survey.ssllabs.SslLabsClient
import okhttp3.survey.types.Client
import okhttp3.survey.types.SuiteId
import okio.FileSystem
import okio.Path.Companion.toPath
import org.conscrypt.Conscrypt

@Suppress("ktlint:standard:property-naming")
suspend fun main() {
  val includeConscrypt = false

  val client =
    OkHttpClient

import java.security.PublicKey
import java.security.Signature
import java.security.SignatureException
import java.security.cert.CertificateFactory
import java.security.cert.X509Certificate
import okio.Buffer
import okio.ByteString
import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement

internal data class Certificate(
  val tbsCertificate: TbsCertificate,
  val signatureAlgorithm: AlgorithmIdentifier,

import okhttp3.internal.http2.Header
import okhttp3.internal.http2.Http2Connection
import okhttp3.internal.http2.Http2Stream
import okhttp3.internal.platform.Platform
import okhttp3.tls.internal.TlsUtil.localhost
import okio.buffer
import okio.source

/** A basic HTTP/2 server that serves the contents of a local directory.  */
class Http2Server(
  private val baseDirectory: File,
  private val sslSocketFactory: SSLSocketFactory,

plugins {
  kotlin("jvm")
}

dependencies {
  testImplementation(libs.squareup.okio)
  testImplementation(libs.squareup.moshi)
  testImplementation(libs.squareup.moshi.kotlin)
  testImplementation(projects.okhttp)
  testImplementation(projects.okhttpTestingSupport)
  testImplementation(projects.mockwebserver)
  testImplementation(libs.junit)