Header(Header.RESPONSE_STATUS, "200"),
      )
    peer.sendFrame().headers(true, 2, expectedResponseHeaders)
    peer.sendFrame().data(true, 3, data(0), 0)
    peer.play()
    val observer = RecordingPushObserver()

    // Play it back.
    val connection = connect(peer, observer, Http2Connection.Listener.REFUSE_INCOMING_STREAMS)
    val client = connection.newStream(headerEntries("b", "banana"), false)