val windowSize = 100
    val windowUpdateThreshold = 50

    // Write the mocking script.
    peer.sendFrame().settings(Settings())
    peer.acceptFrame() // ACK
    peer.acceptFrame() // SYN_STREAM
    peer.sendFrame().headers(false, 3, headerEntries("a", "android"))
    for (i in 0..2) {
      // Send frames of summing to size 50, which is windowUpdateThreshold.