@Throws(IOException::class)
  override fun startHandshake() {
    delegate!!.startHandshake()
  }

  override fun setUseClientMode(mode: Boolean) {
    delegate!!.useClientMode = mode
  }

  override fun getUseClientMode(): Boolean {
    return delegate!!.useClientMode
  }

  override fun setNeedClientAuth(need: Boolean) {
    delegate!!.needClientAuth = need
  }

  override fun setWantClientAuth(want: Boolean) {