// Write the mocking script.
    peer.sendFrame().settings(Settings())
    peer.acceptFrame() // ACK
    peer.acceptFrame() // SYN_STREAM
    peer.acceptFrame() // PING
    peer.sendFrame().headers(false, 3, headerEntries("a", "android"))
    peer.sendFrame().data(true, 3, Buffer().writeUtf8("robot"), 5)
    peer.sendFrame().rstStream(3, ErrorCode.NO_ERROR)
    peer.sendFrame().ping(true, Http2Connection.AWAIT_PING, 0) // PONG

  }

  /** Maximum length of an outbound data frame.  */
  fun maxOutboundDataLength(): Int = writer.maxDataLength()

  /** Count of frames sent or received.  */
  fun frameCount(): Int = frameCount

  fun sendFrame(): Http2Writer {
    outFrames.add(OutFrame(frameCount++, bytesOut.size, false))
    return writer
  }

  /**
   * Shortens the last frame from its original length to `length`. This will cause the peer to