content: package org.libtorrent4j.alerts;
  
  import org.libtorrent4j.PortmapProtocol;
  import org.libtorrent4j.PortmapTransport;
  import org.libtorrent4j.swig.portmap_alert;
  
  /**
   * This alert is generated when a NAT router was successfully found and
   * a port was successfully mapped on it. On a NAT:ed network with a NAT-PMP
   * capable router, this is typically generated once when mapping the TCP
   * port and, if DHT is enabled, when the UDP port is mapped.
   *
   * @author gubatron
   * @author aldenml
   */
  public final class PortmapAlert extends AbstractAlert<portmap_alert> {
  
      PortmapAlert(portmap_alert alert) {
          super(alert);
      }
  
      /**
       * refers to the mapping index of the port map that failed, i.e.
       * the index returned from add_mapping().
       *
       * @return the mapping index
       */
      public int mapping() {
          return alert.get_mapping();
      }
  
      /**
       * the external port allocated for the mapping.
       *
       * @return the external port
       */
      public int externalPort() {
          return alert.getExternal_port();
      }
  
      public PortmapTransport mapTransport() {
          return PortmapTransport.fromSwig(alert.getMap_transport().swigValue());
      }
  
      /**
       * The protocol this mapping was for.
       *
       * @return the mapping protocol
       */
      public PortmapProtocol mapProtocol() {
          return PortmapProtocol.fromSwig(alert.getMap_protocol().swigValue());
      }
  }
  