content: /*
   This file is part of Airsonic.
  
   Airsonic is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
  
   Airsonic is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
  
   You should have received a copy of the GNU General Public License
   along with Airsonic.  If not, see <http://www.gnu.org/licenses/>.
  
   Copyright 2016 (C) Airsonic Authors
   Based upon Subsonic, Copyright 2009 (C) Sindre Mehus
   */
  package org.airsonic.player.service.upnp;
  
  /**
   * @author Sindre Mehus
   * @version $Id$
   */
  public interface Router {
  
      /**
       * Adds a NAT entry on the UPNP device.
       *
       * @param externalPort  The external port to open on the UPNP device an map on the internal client.
       * @param internalPort  The internal client port where data should be redirected.
       * @param leaseDuration Seconds the lease duration in seconds, or 0 for an infinite time.
       */
      void addPortMapping(int externalPort, int internalPort, int leaseDuration);
  
      /**
       * Deletes a NAT entry on the UPNP device.
       *
       * @param externalPort The external port of the NAT entry to delete.
       * @param internalPort The internal port of the NAT entry to delete.
       */
      void deletePortMapping(int externalPort, int internalPort);
  }
  