// ndppd - NDP Proxy Daemon
// Copyright (C) 2011  Daniel Adolfsson <daniel.adolfsson@tuhox.com>
//
// 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 3 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, see <http://www.gnu.org/licenses/>.
#ifndef __NDPPD_SESSION_H
#define __NDPPD_SESSION_H

#include <vector>

#include "ndppd.h"

__NDPPD_NS_BEGIN

class proxy;
class iface;

class session
{
private:
   weak_ptr<session> _ptr;

   strong_ptr<proxy> _pr;

   address _saddr, _daddr, _taddr;

   // An array of interfaces this session is monitoring for
   // ND_NEIGHBOR_ADVERT on.
   std::list<strong_ptr<iface> > _ifaces;

   // The remaining time in miliseconds the object will stay in the
   // interface's session array or cache.
   int _ttl;

   int _status;

   static std::list<weak_ptr<session> > _sessions;

public:
   enum
   {
      WAITING, // Waiting for an advert response.
      VALID,   // Valid;
      INVALID  // Invalid;
   };

   static void update_all(int elapsed_time);

   // Destructor.
   ~session();

   static strong_ptr<session> create(const strong_ptr<proxy>& pr, const address& saddr,
      const address& daddr, const address& taddr);

   void add_iface(const strong_ptr<iface>& ifa);

   const address& taddr() const;

   const address& daddr() const;

   const address& saddr() const;

   int status() const;

   void handle_advert();

   void send_advert();

   void send_solicit();

   void refesh();


};

__NDPPD_NS_END

#endif // __NDPPD_PROXY_H