writerQueue.schedule("$connectionName ping", pingIntervalNanos) {
        val failDueToMissingPong =
          this.withLock {
            if (intervalPongsReceived < intervalPingsSent) {
              return@withLock true
            } else {
              intervalPingsSent++
              return@withLock false
            }
          }
        if (failDueToMissingPong) {
          failConnection(null)

    }
  }

  @Throws(IOException::class)
  fun flush() {
    this.withLock {
      if (closed) throw IOException("closed")
      sink.flush()
    }
  }

  @Throws(IOException::class)
  fun rstStream(
    streamId: Int,
    errorCode: ErrorCode,
  ) {
    this.withLock {
      if (closed) throw IOException("closed")
      require(errorCode.httpCode != -1)

    if (!flushHeaders) {
      this.withLock {
        flushHeaders = (connection.writeBytesTotal >= connection.writeBytesMaximum)
      }
    }

    connection.writeHeaders(id, outFinished, responseHeaders)

    if (flushHeaders) {
      connection.flush()
    }
  }

  fun enqueueTrailers(trailers: Headers) {
    this.withLock {
      check(!sink.finished) { "already finished" }

    while (i.hasNext()) {
      val connection = i.next()
      val socketToClose =
        connection.withLock {
          if (connection.calls.isEmpty()) {
            i.remove()
            connection.noNewExchanges = true
            return@withLock connection.socket()
          } else {
            return@withLock null
          }
        }
      if (socketToClose != null) {
        socketToClose.closeQuietly()

    taskRunner.lock.withLock {
      check(currentTask == TestThreadSerialTask)
      nanoTime = newTime
      yieldUntil(ResumePriority.AfterOtherTasks)
    }
  }

  /** Confirm all tasks have completed. Used by the test thread only. */
  fun assertNoMoreTasks() {
    taskRunner.assertThreadDoesntHoldLock()

    taskRunner.lock.withLock {
      assertThat(activeThreads).isEqualTo(0)

  }

  fun newQueue(): TaskQueue {
    val name = lock.withLock { nextQueueName++ }
    return TaskQueue(this, "Q$name")
  }

  /**
   * Returns a snapshot of queues that currently have tasks scheduled. The task runner does not
   * necessarily track queues that have no tasks scheduled.
   */
  fun activeQueues(): List<TaskQueue> {
    lock.withLock {
      return busyQueues + readyQueues
    }
  }

import okhttp3.internal.assertNotHeld
import okhttp3.internal.assertThreadDoesntHoldLock
import okhttp3.internal.cache.CacheInterceptor
import okhttp3.internal.closeQuietly
import okhttp3.internal.connection.Locks.withLock
import okhttp3.internal.http.BridgeInterceptor
import okhttp3.internal.http.CallServerInterceptor
import okhttp3.internal.http.RealInterceptorChain
import okhttp3.internal.http.RetryAndFollowUpInterceptor

  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
    }
  }

import okhttp3.FakeRoutePlanner
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.TestUtil.awaitGarbageCollection
import okhttp3.internal.concurrent.TaskRunner
import okhttp3.internal.connection.Locks.withLock
import okhttp3.internal.http2.Http2
import okhttp3.internal.http2.Http2Connection
import okhttp3.internal.http2.Http2ConnectionTest
import okhttp3.internal.http2.MockHttp2Peer
import okhttp3.internal.http2.Settings

import okhttp3.Route
import okhttp3.internal.USER_AGENT
import okhttp3.internal.canReuseConnectionFor
import okhttp3.internal.closeQuietly
import okhttp3.internal.concurrent.TaskRunner
import okhttp3.internal.connection.Locks.withLock
import okhttp3.internal.connection.RoutePlanner.Plan
import okhttp3.internal.platform.Platform
import okhttp3.internal.toHostHeader

class RealRoutePlanner(
  private val taskRunner: TaskRunner,