/*
 *  anytun
 *
 *  The secure anycast tunneling protocol (satp) defines a protocol used
 *  for communication between any combination of unicast and anycast
 *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
 *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
 *  ethernet, ip, arp ...). satp directly includes cryptography and
 *  message authentication based on the methodes used by SRTP.  It is
 *  intended to deliver a generic, scaleable and secure solution for
 *  tunneling and relaying of packets of any protocol.
 *
 *
 *  Copyright (C) 2007-2009 Othmar Gsenger, Erwin Nindl,
 *                          Christian Pointner <satp@wirdorange.org>
 *
 *  This file is part of Anytun.
 *
 *  Anytun 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
 *  any later version.
 *
 *  Anytun 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 anytun.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _PORT_WINDOW_H_
#define _PORT_WINDOW_H_

#include <set>
#include "../threadUtils.hpp"
#include "../datatypes.h"

class PortWindow
{
public:
  typedef std::set<uint16_t> PortSet;

  PortWindow(uint16_t,uint16_t);
  ~PortWindow();

  PortSet::size_type getLength();
  bool hasPort(uint16_t);
  bool freePort(uint16_t);
  uint16_t newPort();
  void clear();


private:
  uint16_t start_port_;
  uint16_t end_port_;
  ::Mutex mutex_;
  PortSet ports_;

  PortWindow(const PortWindow& s);
  void operator=(const PortWindow& s);
};

#endif