private var extraNetworkInterceptor: Interceptor? = null

  private fun setLevel(level: Level) {
    networkInterceptor.setLevel(level)
    applicationInterceptor.setLevel(level)
  }

  @BeforeEach
  fun setUp() {
    client =
      OkHttpClient
        .Builder()
        .addNetworkInterceptor(
          Interceptor { chain ->
            when {

    )
  }

  if (androidBuild) {
    sourceSets["androidTest"].java.srcDirs(
      "../okhttp-brotli/src/test/java",
      "../okhttp-dnsoverhttps/src/test/java",
      "../okhttp-logging-interceptor/src/test/java",
      "../okhttp-sse/src/test/java"
    )
  }

  compileOptions {
    targetCompatibility(JavaVersion.VERSION_11)
    sourceCompatibility(JavaVersion.VERSION_11)
  }

  testOptions {

dependencies {
  implementation "org.bouncycastle:bcprov-jdk15on:1.65"
}
```

 *  Upgrade: [Kotlin 1.4.10][kotlin_1_4_10]. We now use Kotlin 1.4.x [functional
    interfaces][fun_interface] for `Authenticator`, `Interceptor`, and others.
 *  Upgrade: Build with Conscrypt 2.5.1.


## Version 4.8.1

_2020-08-06_

 *  Fix: Don't crash in `HeldCertificate.Builder` when creating certificates on older versions of

  fun synchronousCallAccessors() {
    val ready = CountDownLatch(2)
    val waiting = CountDownLatch(1)
    client =
      client
        .newBuilder()
        .addInterceptor(
          Interceptor { chain: Interceptor.Chain? ->
            try {
              ready.countDown()
              waiting.await()
            } catch (e: InterruptedException) {
              throw AssertionError()
            }

import okio.Buffer
import okio.Source
import okio.Timeout
import okio.buffer

/** Serves requests from the cache and writes responses to the cache. */
class CacheInterceptor : Interceptor {
  @Throws(IOException::class)
  override fun intercept(chain: Interceptor.Chain): Response {
    val call = chain.call()
    val cache = chain.cache
    val cacheCandidate = cache?.get(chain.request().requestForCache())

    // Create a client with artificial delays.
    client =
      client
        .newBuilder()
        .addInterceptor(
          Interceptor { chain: Interceptor.Chain ->
            try {
              Thread.sleep(applicationInterceptorDelay)
              return@Interceptor chain.proceed(chain.request())
            } catch (e: InterruptedException) {
              throw InterruptedIOException()
            }

## Version 3.14.1

_2019-04-10_

 *  Fix: Don't crash when an interceptor retries when there are no more routes. This was an
    edge-case regression introduced with the events cleanup in 3.14.0.

 *  Fix: Provide actionable advice when the exchange is non-null. Prior to 3.14, OkHttp would
    silently leak connections when an interceptor retries without closing the response body. With

    // Build a full stack of interceptors.
    val interceptors = mutableListOf<Interceptor>()
    interceptors += client.interceptors
    interceptors += RetryAndFollowUpInterceptor()
    interceptors += BridgeInterceptor()
    interceptors += CacheInterceptor()
    interceptors += ConnectInterceptor
    if (!forWebSocket) {
      interceptors += client.networkInterceptors
    }

        // pool, which should remain clean for subsequent tests.
        .connectionPool(ConnectionPool())
        .addNetworkInterceptor(
          Interceptor { chain: Interceptor.Chain? ->
            val response =
              chain!!.proceed(
                chain.request(),
              )
            responsesNotClosed.add(response)
            response

    // Capture the connection so that we can later make it stale.
    var connection: RealConnection? = null
    client =
      client
        .newBuilder()
        .addNetworkInterceptor(
          Interceptor { chain ->
            connection = chain.connection() as RealConnection
            chain.proceed(chain.request())
          },
        ).build()

    server.enqueue(
      MockResponse