Package com.aelitis.azureus.core.networkmanager.admin.impl

Source Code of com.aelitis.azureus.core.networkmanager.admin.impl.NetworkAdminNATUDPCodecs

/*
* Created on 1 Nov 2006
* Created by Paul Gardner
* Copyright (C) 2006 Aelitis, All Rights Reserved.
*
* This program 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 2
* of the License, or (at your option) any later version.
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*
* AELITIS, SAS au capital de 63.529,40 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/


package com.aelitis.azureus.core.networkmanager.admin.impl;

import java.io.DataInputStream;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.HashMap;
import java.util.Map;

import com.aelitis.net.udp.uc.PRUDPPacketHandler;
import com.aelitis.net.udp.uc.PRUDPPacketReply;
import com.aelitis.net.udp.uc.PRUDPPacketReplyDecoder;
import com.aelitis.net.udp.uc.PRUDPPacketRequest;
import com.aelitis.net.udp.uc.PRUDPPacketRequestDecoder;

public class
NetworkAdminNATUDPCodecs
{
  public static final int ACT_NAT_REQUEST  = 40;
  public static final int ACT_NAT_REPLY  = 41;
 
  private static boolean  registered  = false;
 
  static{
    registerCodecs();
  }
 
  public static void
  registerCodecs()
  {
    if ( registered ){
     
      return;
    }
 
    registered  = true;
   
    PRUDPPacketReplyDecoder  reply_decoder =
      new PRUDPPacketReplyDecoder()
      {
        public PRUDPPacketReply
        decode(
          PRUDPPacketHandler  handler,
          InetSocketAddress  originator,
          DataInputStream    is,
          int          action,
          int          transaction_id )
       
          throws IOException
        {
          switch( action ){
         
            case ACT_NAT_REPLY:
            {
              return( new NetworkAdminNATUDPReply(is, transaction_id ));
            }
            default:
            {
              throw( new IOException( "Unrecognised action '" + action + "'" ));
            }
          }
        }
      };
         
    Map  reply_decoders = new HashMap();
   
    reply_decoders.put( new Integer( ACT_NAT_REPLY ), reply_decoder );
   
    PRUDPPacketReply.registerDecoders( reply_decoders );
   
    PRUDPPacketRequestDecoder  request_decoder =
      new PRUDPPacketRequestDecoder()
      {
        public PRUDPPacketRequest
        decode(
          PRUDPPacketHandler  handler,
          DataInputStream    is,
          long        connection_id,
          int          action,
          int          transaction_id )
       
          throws IOException
        {
          switch( action ){
            case ACT_NAT_REQUEST:
            {
              return( new NetworkAdminNATUDPRequest(is, connection_id, transaction_id ));
            }
            default:
            {
              throw( new IOException( "unsupported request type"));
            }
          }
        }
      };

    Map  request_decoders = new HashMap();
   
    request_decoders.put( new Integer( ACT_NAT_REQUEST ), request_decoder );
   
    PRUDPPacketRequest.registerDecoders( request_decoders );
  }
}
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