* most common configuration.
   */
  public fun noClientAuth() {
    this.clientAuth = CLIENT_AUTH_NONE
  }

  /**
   * Configure the server to [want client auth][SSLSocket.setWantClientAuth]. If the
   * client presents a certificate that is [trusted][TrustManager] the handshake will
   * proceed normally. The connection will also proceed normally if the client presents no