peer.acceptFrame() // DATA STREAM 3
    peer.play()

    // Play it back.
    val connection = connect(peer)
    val stream1 = connection.newStream(headerEntries("a", "android"), true)
    val stream2 = connection.newStream(headerEntries("b", "banana"), true)
    connection.writePingAndAwaitPong() // Ensure the GO_AWAY that resets stream2 has been received.
    val sink1 = stream1.sink.buffer()

    check(!client) { "Client cannot push requests." }
    return newStream(associatedStreamId, requestHeaders, out)
  }

  /**
   * Returns a new locally-initiated stream.
   *
   * @param out true to create an output stream that we can use to send data to the remote peer.
   *     Corresponds to `FLAG_FIN`.
   */
  @Throws(IOException::class)
  fun newStream(
    requestHeaders: List<Header>,
    out: Boolean,

  override fun writeRequestHeaders(request: Request) {
    if (stream != null) return

    val hasRequestBody = request.body != null
    val requestHeaders = http2HeadersList(request)
    stream = http2Connection.newStream(requestHeaders, hasRequestBody)
    // We may have been asked to cancel while creating the new stream and sending the request
    // headers, but there was still no stream to close.
    if (canceled) {