private var serverSocket: ServerSocket? = null
  private val connectionCount = AtomicInteger()
  private val openSockets = Collections.newSetFromMap(ConcurrentHashMap<Socket, Boolean>())

  fun play() {
    serverSocket = ServerSocket(0)
    executor.execute {
      val threadName = "SocksProxy ${serverSocket!!.localPort}"
      Thread.currentThread().name = threadName
      try {
        while (true) {