ipv4-routing-helper.h

Go to the documentation of this file.

/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2008 INRIA
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * 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
 *
 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
 */

#ifndef IPV4_ROUTING_HELPER_H
#define IPV4_ROUTING_HELPER_H

#include "ns3/ptr.h"
#include "ns3/nstime.h"
#include "ns3/output-stream-wrapper.h"
#include "ns3/ipv4-list-routing.h"

namespace ns3 {

class Ipv4RoutingProtocol;
class Node;

class Ipv4RoutingHelper
{
public:
  /*
   * Destroy an instance of an Ipv4RoutingHelper
   */
  virtual ~Ipv4RoutingHelper ();

  virtual Ipv4RoutingHelper* Copy (void) const = 0;

  virtual Ptr<Ipv4RoutingProtocol> Create (Ptr<Node> node) const = 0;

  void PrintRoutingTableAllAt (Time printTime, Ptr<OutputStreamWrapper> stream) const;

  void PrintRoutingTableAllEvery (Time printInterval, Ptr<OutputStreamWrapper> stream) const;

  void PrintRoutingTableAt (Time printTime, Ptr<Node> node, Ptr<OutputStreamWrapper> stream) const;

  void PrintRoutingTableEvery (Time printInterval, Ptr<Node> node, Ptr<OutputStreamWrapper> stream) const;

  template<class T>
  static Ptr<T> GetRouting (Ptr<Ipv4RoutingProtocol> protocol);
  
private:
  void Print (Ptr<Node> node, Ptr<OutputStreamWrapper> stream) const;
  void PrintEvery (Time printInterval, Ptr<Node> node, Ptr<OutputStreamWrapper> stream) const;
};


template<class T>
Ptr<T> Ipv4RoutingHelper::GetRouting (Ptr<Ipv4RoutingProtocol> protocol)
{
  Ptr<T> ret = DynamicCast<T> (protocol);
  if (ret == 0)
    {
      // trying to check if protocol is a list routing
      Ptr<Ipv4ListRouting> lrp = DynamicCast<Ipv4ListRouting> (protocol);
      if (lrp != 0)
        {
          for (uint32_t i = 0; i < lrp->GetNRoutingProtocols ();  i++)
            {
              int16_t priority;
              ret = GetRouting<T> (lrp->GetRoutingProtocol (i, priority)); // potential recursion, if inside ListRouting is ListRouting
              if (ret != 0)
                break;
            }
        }
    }

  return ret;
}

} // namespace ns3


#endif /* IPV4_ROUTING_HELPER_H */