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;
  
  import com.hoodcomputing.natpmp.MapRequestMessage;
  import com.hoodcomputing.natpmp.NatPmpDevice;
  
  /**
   * @author Sindre Mehus
   * @version $Id$
   */
  public class NATPMPRouter implements Router {
  
      private final NatPmpDevice device;
  
      private NATPMPRouter(NatPmpDevice device) {
          this.device = device;
      }
  
      public static NATPMPRouter findRouter() {
          try {
              return new NATPMPRouter(new NatPmpDevice(false));
          } catch (Exception x) {
              return null;
          }
      }
  
      public void addPortMapping(int externalPort, int internalPort, int leaseDuration) {
  
          // Use one week if lease duration is "forever".
          if (leaseDuration == 0) {
              leaseDuration = 7 * 24 * 3600;
          }
  
          MapRequestMessage map = new MapRequestMessage(true, internalPort, externalPort, leaseDuration, null);
          device.enqueueMessage(map);
          device.waitUntilQueueEmpty();
      }
  
      public void deletePortMapping(int externalPort, int internalPort) {
          MapRequestMessage map = new MapRequestMessage(true, internalPort, externalPort, 0, null);
          device.enqueueMessage(map);
          device.waitUntilQueueEmpty();
      }
  }
  