peer.acceptFrame() // PING
    peer.play()

    // Play it back.
    val connection =
      Http2Connection
        .Builder(true, TaskRunner.INSTANCE)
        .socket(peer.openSocket().asBufferedSocket(), "peer")
        .pushObserver(Http2ConnectionTest.IGNORE)
        .listener(realConnection)
        .build()
    connection.start(sendConnectionPreface = false)

   */
  @Test fun socketExceptionWhileWritingHeaders() {
    peer.acceptFrame() // SYN_STREAM.
    peer.play()
    val longString = repeat('a', Http2.INITIAL_MAX_FRAME_SIZE + 1)
    val socket = peer.openSocket()
    val connection =
      Http2Connection
        .Builder(true, TaskRunner.INSTANCE)
        .socket(socket.asBufferedSocket(), "peer")
        .pushObserver(IGNORE)
        .build()

 */
class SocksProxy {
  private val executor = Executors.newCachedThreadPool(threadFactory("SocksProxy"))
  private var serverSocket: ServerSocket? = null
  private val connectionCount = AtomicInteger()
  private val openSockets: MutableSet<Socket> = ConcurrentHashMap.newKeySet()

  fun play() {
    serverSocket = ServerSocket(0)
    executor.execute {
      val threadName = "SocksProxy ${serverSocket!!.localPort}"