inner class AsyncCall(
    private val responseCallback: Callback,
  ) : Runnable {
    @Volatile var callsPerHost = AtomicInteger(0)
      private set

    fun reuseCallsPerHostFrom(other: AsyncCall) {
      this.callsPerHost = other.callsPerHost
    }

    val host: String
      get() = originalRequest.url.host

    val request: Request
      get() = originalRequest

    val call: RealCall

  override fun noNewExchanges() {
    this.withLock {
      noNewExchanges = true
    }
    connectionListener.noNewExchanges(this)
  }

  /** Prevent this connection from being used for hosts other than the one in [route]. */
  internal fun noCoalescedConnections() {
    this.withLock {
      noCoalescedConnections = true
    }
  }

  internal fun incrementSuccessCount() {
    this.withLock {

    ping. OkHttp had a race condition bug.


## Version 4.6.0

_2020-04-28_

 *  Fix: Follow HTTP 307 and 308 redirects on methods other than GET and POST. We're reluctant to
    change OkHttp's behavior in handling common HTTP status codes, but this fix is overdue! The new
    behavior is now consistent with [RFC 7231][rfc_7231_647], which is newer than OkHttp itself.

        return
      }
      val stream: Http2Stream?
      ******@****.***ck {
        stream = getStream(streamId)

        if (stream == null) {
          // If we're shutdown, don't bother with this stream.
          if (isShutdown) return

          // If the stream ID is less than the last created ID, assume it's already closed.
          if (streamId <= lastGoodStreamId) return

package okhttp3.internal

import java.net.HttpURLConnection.HTTP_MOVED_PERM
import java.net.HttpURLConnection.HTTP_MOVED_TEMP
import java.net.HttpURLConnection.HTTP_MULT_CHOICE
import java.net.HttpURLConnection.HTTP_SEE_OTHER
import okhttp3.CacheControl
import okhttp3.Headers
import okhttp3.MediaType
import okhttp3.Protocol
import okhttp3.Request
import okhttp3.Response
import okhttp3.ResponseBody

        .protocols(listOf(Protocol.H2_PRIOR_KNOWLEDGE, Protocol.HTTP_1_1))
    }.also { expected ->
      assertThat(expected.message).isEqualTo(
        "protocols containing h2_prior_knowledge cannot use other protocols: " +
          "[h2_prior_knowledge, http/1.1]",
      )
    }
  }

  @Test fun testH2PriorKnowledgeOkHttpClientConstructionDuplicates() {
    assertFailsWith<IllegalArgumentException> {

            !response.cacheControl.isPublic &&
            !response.cacheControl.isPrivate
          ) {
            return false
          }
        }

        else -> {
          // All other codes cannot be cached.
          return false
        }
      }

      // A 'no-store' directive on request or response prevents the response from being cached.

  /**
   * The dispatcher used to respond to HTTP requests. The default dispatcher is a [QueueDispatcher],
   * which serves a fixed sequence of responses from a [queue][enqueue].
   *
   * Other dispatchers can be configured. They can vary the response based on timing or the content
   * of the request.
   */
  var dispatcher: Dispatcher = QueueDispatcher()

  private var portField: Int = -1
  val port: Int

    try {
      val connection = exchangeFinderFactory(this, state.address, PoolConnectionUser).find()

      // RealRoutePlanner will add the connection to the pool itself, other RoutePlanners may not
      // TODO: make all RoutePlanners consistent in this behavior
      if (connection !in connections) {
        connection.withLock { put(connection) }
      }

   *
   * @param callerIsIdle true if the caller isn't sending any more bytes until the peer responds.
   *     This is true after a `Expect-Continue` request, false for duplex requests, and false for
   *     all other requests.
   */
  @Throws(IOException::class)
  fun takeHeaders(callerIsIdle: Boolean = false): Headers {
    this.withLock {
      while (headersQueue.isEmpty() && errorCode == null) {