}
  }

  companion object {
    /** Obtain a host string containing either an actual host name or a numeric IP address. */
    val InetSocketAddress.socketHost: String get() {
      // The InetSocketAddress was specified with a string (either a numeric IP or a host name). If
      // it is a name, all IPs for that name should be tried. If it is an IP address, only that IP
      // address should be tried.

    fun Response.hasVaryAll(): Boolean = "*" in headers.varyFields()

    /**
     * Returns the names of the request headers that need to be checked for equality when caching.
     */
    private fun Headers.varyFields(): Set<String> {
      var result: MutableSet<String>? = null
      for (i in 0 until size) {
        if (!"Vary".equals(name(i), ignoreCase = true)) {
          continue
        }

        val value = value(i)

  @Test
  fun requestCookies() {
    server.enqueue(MockResponse())
    val cookieJar = RecordingCookieJar()
    cookieJar.enqueueRequestCookies(
      Cookie.Builder().name("a").value("b").domain(server.hostName).build(),
      Cookie.Builder().name("c").value("d").domain(server.hostName).build(),
    )
    client =
      client.newBuilder()
        .cookieJar(cookieJar)
        .build()

        .build()
    val acceptedIssuers = handshakeCertificates.trustManager.acceptedIssuers
    val names =
      acceptedIssuers
        .map { it.subjectDN.name }
        .toSet()

    // It's safe to assume all platforms will have a major Internet certificate issuer.
    assertThat(names).matchesPredicate { strings ->
      strings.any { it.matches(Regex("[A-Z]+=Entrust.*")) }
    }
  }

    dns.assertRequests(uriHost)
    proxySelector.assertRequests() // No proxy selector requests!
  }

  /**
   * Don't call through to the proxy selector if we don't have a host name.
   * https://github.com/square/okhttp/issues/5770
   */
  @Test fun proxySelectorNotCalledForNullHost() {
    // The string '>' is okay in a hostname in HttpUrl, which does very light hostname validation.

      cachedHeaders: Headers,
      networkHeaders: Headers,
    ): Headers {
      val result = Headers.Builder()

      for (index in 0 until cachedHeaders.size) {
        val fieldName = cachedHeaders.name(index)
        val value = cachedHeaders.value(index)
        if ("Warning".equals(fieldName, ignoreCase = true) && value.startsWith("1")) {
          // Drop 100-level freshness warnings.
          continue
        }

    private val sourcePipe: Pipe,
    private val sinkPipe: Pipe,
  ) : RealWebSocket.Streams(client, sourcePipe.source.buffer(), sinkPipe.sink.buffer()) {
    private val name = if (client) "client" else "server"
    val listener = WebSocketRecorder(name)
    var webSocket: RealWebSocket? = null
    var closed = false
    var canceled = false

    fun initWebSocket(
      random: Random?,

      throw AssertionError("Thread ${Thread.currentThread().name} MUST hold lock on $this")
    }
  }

  @Suppress("NOTHING_TO_INLINE")
  internal inline fun Any.assertThreadDoesntHoldLock() {
    if (assertionsEnabled && taskRunner.lock.isHeldByCurrentThread) {
      throw AssertionError("Thread ${Thread.currentThread().name} MUST NOT hold lock on $this")
    }
  }

 *
 * See [RFC 7234, 5.2](https://tools.ietf.org/html/rfc7234#section-5.2).
 */
class CacheControl internal constructor(
  /**
   * In a response, this field's name "no-cache" is misleading. It doesn't prevent us from caching
   * the response; it only means we have to validate the response with the origin server before
   * returning it. We can do this with a conditional GET.
   *

import okhttp3.internal.http2.Http2.frameLogWindowUpdate
import okhttp3.internal.writeMedium
import okio.Buffer
import okio.BufferedSink

/** Writes HTTP/2 transport frames. */
@Suppress("NAME_SHADOWING")
class Http2Writer(
  private val sink: BufferedSink,
  private val client: Boolean,
) : Closeable {
  internal val lock: ReentrantLock = ReentrantLock()

  private val hpackBuffer: Buffer = Buffer()