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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2011 University of California, Los Angeles
*
* 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: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
*/
#ifndef NDNSIM_NACKS_H
#define NDNSIM_NACKS_H
#include "ns3/ndn-forwarding-strategy.h"
namespace ns3 {
namespace ndn {
namespace fw {
/**
* @ingroup ndn-fw
* @brief Implementation of experimental NACK messages (enables with EnableNACKs option)
*/
class Nacks :
public ForwardingStrategy
{
private:
typedef ForwardingStrategy super;
public:
static TypeId
GetTypeId ();
// from super
virtual void
OnInterest (Ptr<Face> face,
Ptr<Interest> interest);
protected:
// from super
virtual void
DidReceiveDuplicateInterest (Ptr<Face> inFace,
Ptr<const Interest> interest,
Ptr<pit::Entry> pitEntry);
// from super
virtual void
DidExhaustForwardingOptions (Ptr<Face> inFace,
Ptr<const Interest> interest,
Ptr<pit::Entry> pitEntry);
virtual void
OnNack (Ptr<Face> inFace,
Ptr<Interest> nack);
virtual void
DidReceiveValidNack (Ptr<Face> inFace,
uint32_t nackCode,
Ptr<const Interest> nack,
Ptr<pit::Entry> pitEntry);
protected:
bool m_nacksEnabled;
TracedCallback<Ptr<const Interest>,
Ptr<const Face> > m_outNacks; ///< @brief trace of outgoing NACKs
TracedCallback<Ptr<const Interest>,
Ptr<const Face> > m_inNacks; ///< @brief trace of incoming NACKs
TracedCallback<Ptr<const Interest>,
Ptr<const Face> > m_dropNacks; ///< @brief trace of dropped NACKs
};
} // namespace fw
} // namespace ndn
} // namespace ns3
#endif // NDNSIM_NACKS