System.out.printf("%.3f %s%n", elapsedNanos / 1000000000d, name);
  }

  @Override public void callStart(Call call) {
    printEvent("callStart");
  }

  @Override public void callEnd(Call call) {
    printEvent("callEnd");
  }

  @Override public void dnsStart(Call call, String domainName) {
    printEvent("dnsStart");
  }

import mockwebserver3.SocketEffect.CloseSocket
import mockwebserver3.junit5.StartStop
import okhttp3.CallEvent.CacheConditionalHit
import okhttp3.CallEvent.CacheHit
import okhttp3.CallEvent.CacheMiss
import okhttp3.CallEvent.CallEnd
import okhttp3.CallEvent.CallFailed
import okhttp3.CallEvent.CallStart
import okhttp3.CallEvent.Canceled
import okhttp3.CallEvent.ConnectEnd
import okhttp3.CallEvent.ConnectFailed
import okhttp3.CallEvent.ConnectStart

import assertk.assertions.isTrue
import kotlin.test.assertFailsWith
import mockwebserver3.MockResponse
import mockwebserver3.MockWebServer
import mockwebserver3.junit5.StartStop
import okhttp3.CallEvent.CallEnd
import okhttp3.CallEvent.CallStart
import okhttp3.CallEvent.ConnectEnd
import okhttp3.CallEvent.ConnectStart
import okhttp3.CallEvent.ConnectionAcquired
import okhttp3.CallEvent.ConnectionReleased

document's age at the time it was served based on "Last-Modified". Default expiration dates aren't used for URIs 
containing a query.

 - CallStart
 - **CacheHit**
 - CallEnd
 
### Cache Miss

Under a cache miss the normal request events are seen but an additional event shows the presence of the cache.

01-01 12:53:32.811 10999 11089 D OkHttp  : [49 ms] responseBodyEnd: byteCount=128
01-01 12:53:32.811 10999 11089 D OkHttp  : [49 ms] connectionReleased
01-01 12:53:32.811 10999 11089 D OkHttp  : [49 ms] callEnd
01-01 12:53:32.816 10999 11090 D OkHttp  : [54 ms] responseHeadersStart

  override fun responseFailed(
    call: Call,
    ioe: IOException,
  ) = onEvent(ResponseFailed(System.nanoTime(), call, ioe))

  override fun callEnd(call: Call) = onEvent(CallEnd(System.nanoTime(), call))

  override fun callFailed(
    call: Call,
    ioe: IOException,
  ) = onEvent(CallFailed(System.nanoTime(), call, ioe))

01-01 12:53:32.811 10999 11089 D OkHttp  : [49 ms] responseBodyEnd: byteCount=128
01-01 12:53:32.811 10999 11089 D OkHttp  : [49 ms] connectionReleased
01-01 12:53:32.811 10999 11089 D OkHttp  : [49 ms] callEnd
01-01 12:53:32.816 10999 11090 D OkHttp  : [54 ms] responseHeadersStart

          addAll(listOf("ConnectStart", "ConnectEnd"))
        }
        addAll(listOf("ConnectionAcquired", "ConnectionReleased", "CallEnd"))
      }

    assertThat(events2).isEqualTo(expectedEvents2)
  }

  private fun isConnectionEvent(it: CallEvent?) =
    it is CallStart ||
      it is CallEnd ||
      it is ConnectStart ||
      it is ConnectEnd ||
      it is ConnectionAcquired ||
      it is ConnectionReleased ||

  }

  override fun responseFailed(
    call: Call,
    ioe: IOException,
  ) {
    logWithTime("responseFailed: $ioe")
  }

  override fun callEnd(call: Call) {
    logWithTime("callEnd")
  }

  override fun callFailed(
    call: Call,
    ioe: IOException,
  ) {
    logWithTime("callFailed: $ioe")
  }

  override fun canceled(call: Call) {

  }

  override fun responseFailed(
    call: Call,
    ioe: IOException,
  ) {
    logWithTime("responseFailed: $ioe")
  }

  override fun callEnd(call: Call) {
    logWithTime("callEnd")
  }

  override fun callFailed(
    call: Call,
    ioe: IOException,
  ) {
    logWithTime("callFailed: $ioe")
  }

  override fun canceled(call: Call) {