Finds first different block betweeen two waves nodes

firstDifferentBlock.scala

object LCB extends App {

  def get(url: String) = scala.io.Source.fromURL(url).mkString
  def blockAt(nodeHttp: String, blockHeight: Int) = get(nodeHttp + "/blocks/at/" + blockHeight)
  def nodeComparator(node1: String, node2: String)(h: Int): Boolean = blockAt(node1, h) == blockAt(node2, h)

  val TESTNET1 = "http://52.30.47.67:6869"
  val TESTNET2 = "http://52.28.66.217:6869"
  val TESTNET3 = "http://52.77.111.219:6869"
  val TESTNET4 = "http://52.51.92.182:6869"

  def firstDifferent(min: Int, max: Int, areSame: Int => Boolean): Int = {
    println("searching [" + min + ", " + max + ")")
    if (max - min <= 1)
      max
    else {
      val split = (min + max) / 2
      if (areSame(split))
        firstDifferent(split, max, areSame)
      else firstDifferent(min, split, areSame)
    }
  }

  println("first different block height is " + firstDifferent(1, 87450, nodeComparator(TESTNET3, TESTNET4)))
}