* [Call.request] is a redirect to a different address.
   */
  open fun requestBodyStart(call: Call) {
  }

  /**
   * Invoked immediately after sending a request body.
   *
   * This method is always invoked after [requestBodyStart].
   */
  open fun requestBodyEnd(
    call: Call,
    byteCount: Long,
  ) {
  }

  /**

  override fun requestHeadersEnd(
    call: Call,
    request: Request,
  ) = logEvent(RequestHeadersEnd(System.nanoTime(), call, request.headers.byteCount()))

  override fun requestBodyStart(call: Call) = logEvent(RequestBodyStart(System.nanoTime(), call))

  override fun requestBodyEnd(
    call: Call,
    byteCount: Long,
  ) = logEvent(RequestBodyEnd(System.nanoTime(), call, byteCount))

import okhttp3.CallEvent.ConnectionAcquired
import okhttp3.CallEvent.DnsEnd
import okhttp3.CallEvent.DnsStart
import okhttp3.CallEvent.FollowUpDecision
import okhttp3.CallEvent.RequestBodyEnd
import okhttp3.CallEvent.RequestBodyStart
import okhttp3.CallEvent.RequestHeadersEnd
import okhttp3.CallEvent.RequestHeadersStart
import okhttp3.CallEvent.ResponseBodyEnd
import okhttp3.CallEvent.ResponseBodyStart
import okhttp3.CallEvent.ResponseFailed

      assertThat(response.code).isEqualTo(200)
      assertThat(response.socket).isNull()
      assertThat(response.body.string()).isEqualTo("normal request")
    }
    // Confirm there's no RequestBodyStart/RequestBodyEnd on failed upgrades.
    assertThat(listener.recordedEventTypes()).containsExactly(
      "CallStart",
      "ProxySelectStart",
      "ProxySelectEnd",
      "DnsStart",
      "DnsEnd",

    call: Call,
    request: Request,
  ) {
    logWithTime("requestHeadersEnd")

    delegate.requestHeadersEnd(call, request)
  }

  override fun requestBodyStart(call: Call) {
    logWithTime("requestBodyStart")

    delegate.requestBodyStart(call)
  }

  override fun requestBodyEnd(
    call: Call,
    byteCount: Long,
  ) {
    logWithTime("requestBodyEnd: byteCount=$byteCount")

  }

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

  data class RequestBodyEnd(
    override val timestampNs: Long,
    override val call: Call,
    val bytesWritten: Long,
  ) : CallEvent() {
    override fun closes(event: CallEvent): Boolean = event is RequestBodyStart && call == event.call
  }

    }
    expectedEvents += "ConnectEnd"
    expectedEvents += "ConnectionAcquired"
    expectedEvents += "RequestHeadersStart"
    expectedEvents += "RequestHeadersEnd"
    expectedEvents += "RequestBodyStart"
    // ... but we can read the response even after writing the request fails.
    expectedEvents += "RequestFailed"
    expectedEvents += "ResponseHeadersStart"
    expectedEvents += "ResponseHeadersEnd"

  @Throws(IOException::class)
  fun createRequestBody(
    request: Request,
    duplex: Boolean,
  ): Sink {
    this.isDuplex = duplex
    val contentLength = request.body!!.contentLength()
    eventListener.requestBodyStart(call)
    val rawRequestBody = codec.createRequestBody(request, contentLength)
    return RequestBodySink(rawRequestBody, contentLength)
  }

  @Throws(IOException::class)
  fun flushRequest() {
    try {

      "ConnectStart",
      "SecureConnectStart",
      "SecureConnectEnd",
      "ConnectEnd",
      "ConnectionAcquired",
      "RequestHeadersStart",
      "RequestHeadersEnd",
      "RequestBodyStart",
      "ResponseHeadersStart",
      "ResponseHeadersEnd",
      "FollowUpDecision",
      "ResponseBodyStart",
      "ResponseBodyEnd",
      "RequestBodyEnd",
      "ConnectionReleased",

        ),
      ).assertLogMatch(Regex("""requestHeadersStart"""))
      .assertLogMatch(Regex("""requestHeadersEnd"""))
      .assertLogMatch(Regex("""requestBodyStart"""))
      .assertLogMatch(Regex("""requestBodyEnd: byteCount=6"""))
      .assertLogMatch(Regex("""responseHeadersStart"""))