import okhttp3.CallEvent.RequestHeadersStart
import okhttp3.CallEvent.ResponseBodyEnd
import okhttp3.CallEvent.ResponseBodyStart
import okhttp3.CallEvent.ResponseHeadersEnd
import okhttp3.CallEvent.ResponseHeadersStart
import okhttp3.EventRecorder
import okhttp3.Headers.Companion.headersOf
import okhttp3.OkHttpClientTestRule
import okhttp3.Protocol
import okhttp3.RecordingHostnameVerifier
import okhttp3.Request

        if ("100-continue".equals(request.header("Expect"), ignoreCase = true)) {
          exchange.flushRequest()
          responseBuilder = exchange.readResponseHeaders(expectContinue = true)
          exchange.responseHeadersStart()
          invokeStartEvent = false
        }
        if (responseBuilder == null) {
          if (requestBody.isDuplex()) {
            // Prepare a duplex body so that the application can send a request body later.

  override fun requestFailed(
    call: Call,
    ioe: IOException,
  ) = onEvent(RequestFailed(System.nanoTime(), call, ioe))

  override fun responseHeadersStart(call: Call) =
    onEvent(
      ResponseHeadersStart(
        System.nanoTime(),
        call,
      ),
    )

  override fun responseHeadersEnd(
    call: Call,
    response: Response,

  }

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

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

  override fun responseHeadersEnd(
    call: Call,
    response: Response,
  ) {
    logWithTime("responseHeadersEnd: $response")
  }

0.587 connectionAcquired
0.588 requestHeadersStart
0.590 requestHeadersEnd
0.591 responseHeadersStart
0.675 responseHeadersEnd
0.676 responseBodyStart
0.679 responseBodyEnd
0.679 connectionReleased
0.680 callEnd
REQUEST 2 (pooled connection)
0.000 callStart
0.001 connectionAcquired
0.001 requestHeadersStart
0.001 requestHeadersEnd
0.002 responseHeadersStart
0.082 responseHeadersEnd
0.082 responseBodyStart
0.082 responseBodyEnd

import okhttp3.CallEvent.RequestHeadersStart
import okhttp3.CallEvent.ResponseBodyEnd
import okhttp3.CallEvent.ResponseBodyStart
import okhttp3.CallEvent.ResponseHeadersEnd
import okhttp3.CallEvent.ResponseHeadersStart
import okhttp3.EventRecorder
import okhttp3.Headers
import okhttp3.OkHttpClientTestRule
import okhttp3.Request
import okhttp3.sse.EventSource
import okhttp3.sse.EventSources.createFactory

    }

    @Override public void requestFailed(Call call, IOException ioe) {
      printEvent("requestFailed");
    }

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

    @Override public void responseHeadersEnd(Call call, Response response) {
      printEvent("responseHeadersEnd");
    }

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
01-01 12:53:32.816 10999 11090 D OkHttp  : [54 ms] responseHeadersEnd: Response{protocol=h2, code=200, message=, url=https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAAA3d3dwhmYWNlYm9vawNjb20AAAEAAQ}

  }

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

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

  override fun responseHeadersEnd(
    call: Call,
    response: Response,
  ) {
    logWithTime("responseHeadersEnd: $response")
  }

  }

  data class ResponseHeadersStart(
    override val timestampNs: Long,
    override val call: Call,
  ) : CallEvent()

  data class ResponseHeadersEnd(
    override val timestampNs: Long,
    override val call: Call,
    val headerLength: Long,
  ) : CallEvent() {
    override fun closes(event: CallEvent): Boolean = event is ResponseHeadersStart && call == event.call
  }