* provides support.
   */
  QUIC("quic"),

  /**
   * HTTP/3 is the third and upcoming major version of the Hypertext Transfer Protocol used to
   * exchange information. HTTP/3 runs over QUIC, which is published as RFC 9000.
   *
   * HTTP/3 is not natively supported by OkHttp, but provided to allow a theoretical interceptor
   * that provides support.
   */

    }

  val request = Request("http://google.com/robots.txt".toHttpUrl())

  @Test
  fun testHttpLoggingInterceptor() {
    val interceptor =
      HttpLoggingInterceptor().apply {
        level = HttpLoggingInterceptor.Level.BASIC
      }

    val client = clientBuilder.addInterceptor(interceptor).build()

    try {
      client.newCall(request).execute()
    } catch (uhe: UnknownHostException) {
      // expected
    }

// https://github.com/square/okhttp/issues/8901
//sourceSets {
//  test {
//    java.srcDirs(
//      "../okhttp-brotli/src/test/java",
//      "../okhttp-dnsoverhttps/src/test/java",
//      "../okhttp-logging-interceptor/src/test/java",
//      "../okhttp-sse/src/test/java",
//    )
//  }
//}

dependencies {
  implementation(projects.okhttp)

  testImplementation(projects.mockwebserver3Junit5)

import okio.Timeout
import okio.buffer

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

    val now = System.currentTimeMillis()

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

        // 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

    )
  }

  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 {

  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 {

       // define any required OkHttp artifacts without version
       implementation("com.squareup.okhttp3:okhttp")
       implementation("com.squareup.okhttp3:logging-interceptor")
    }
```

Maven and JVM Projects
----------------------

OkHttp is published as a Kotlin Multiplatform project. While Gradle handles this automatically,

    // Capture the protocol as it is observed by the interceptor.
    val protocolRef = AtomicReference<Protocol?>()
    val interceptor =
      Interceptor { chain: Interceptor.Chain ->
        protocolRef.set(chain.connection()!!.protocol())
        chain.proceed(chain.request())
      }
    client =
      client
        .newBuilder()
        .addNetworkInterceptor(interceptor)
        .build()