withLock {
      if (closed) throw IOException("closed")
      require(errorCode.httpCode != -1) { "errorCode.httpCode == -1" }
      frameHeader(
        streamId = 0,
        length = 8 + debugData.size,
        type = TYPE_GOAWAY,
        flags = FLAG_NONE,
      )
      sink.writeInt(lastGoodStreamId)
      sink.writeInt(errorCode.httpCode)
      if (debugData.isNotEmpty()) {
        sink.write(debugData)
      }

    writeMedium(frame, 4)
    frame.writeByte(Http2.TYPE_RST_STREAM)
    frame.writeByte(FLAG_NONE)
    frame.writeInt(expectedStreamId and 0x7fffffff)
    frame.writeInt(ErrorCode.PROTOCOL_ERROR.httpCode)
    reader.nextFrame(
      requireSettings = false,
      object : BaseTestHandler() {
        override fun rstStream(
          streamId: Int,
          errorCode: ErrorCode,
        ) {

  val ipv6 = InetAddress.getByName("2001:db8:ffff:ffff:ffff:ffff:ffff:1")

  val refusedStream =
    MockResponse
      .Builder()
      .onRequestStart(CloseStream(ErrorCode.REFUSED_STREAM.httpCode))
      .build()
  val bodyResponse = MockResponse(body = "body")

  @BeforeEach
  fun setUp() {
    socketFactory = SpecificHostSocketFactory(InetSocketAddress(server1.hostName, server1.port))

    client =

          },
        ).build()

    // Set up a same-connection retry.
    serverIpv4.enqueue(
      MockResponse
        .Builder()
        .onRequestStart(CloseStream(ErrorCode.REFUSED_STREAM.httpCode))
        .build(),
    )
    serverIpv4.enqueue(
      MockResponse(body = "this was the 2nd request on IPv4"),
    )
    serverIpv6.enqueue(
      MockResponse(body = "unexpected call to IPv6"),
    )

     */
    public fun doNotReadRequestBody(): Builder =
      apply {
        doNotReadRequestBody = true
        onResponseEnd = CloseStream(ErrorCode.NO_ERROR.httpCode)
      }

    /** Trigger [socketEffect] while reading the request body. */
    public fun onRequestBody(socketEffect: SocketEffect?): Builder =
      apply {
        this.onRequestBody = socketEffect
      }