tcp-error-model.h

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/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2015 Natale Patriciello <natale.patriciello@gmail.com>
 *
 * 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
 *
 */
#ifndef TCPERRORCHANNEL_H
#define TCPERRORCHANNEL_H

#include "ns3/error-model.h"
#include "ns3/tcp-header.h"
#include "ns3/ipv4-header.h"

namespace ns3 {

class TcpGeneralErrorModel : public ErrorModel
{
public:
  static TypeId GetTypeId (void);
  TcpGeneralErrorModel ();

  void SetDropCallback (Callback<void, const Ipv4Header&, const TcpHeader&> cb)
  {
    m_dropCallback = cb;
  }

protected:
  virtual bool ShouldDrop (const Ipv4Header &ipHeader, const TcpHeader &tcpHeader,
                           uint32_t packetSize) = 0;


private:
  virtual bool DoCorrupt (Ptr<Packet> p);
  Callback<void, const Ipv4Header&, const TcpHeader&> m_dropCallback;
};

class TcpSeqErrorModel : public TcpGeneralErrorModel
{
public:
  static TypeId GetTypeId (void);
  TcpSeqErrorModel () : TcpGeneralErrorModel () { }

  void AddSeqToKill (const SequenceNumber32 &seq)
  {
    m_seqToKill.insert(m_seqToKill.end(), seq);
  }

protected:
  virtual bool ShouldDrop (const Ipv4Header &ipHeader, const TcpHeader &tcpHeader,
                           uint32_t packetSize);

protected:
  std::list<SequenceNumber32> m_seqToKill;

private:
  virtual void DoReset (void);
};

class TcpFlagErrorModel : public TcpGeneralErrorModel
{
public:
  static TypeId GetTypeId (void);
  TcpFlagErrorModel ();

  void SetFlagToKill (TcpHeader::Flags_t flags)
  {
    m_flagsToKill = flags;
  }

  void SetKillRepeat (int killNumber)
  {
    m_killNumber = killNumber;
  }

protected:
  virtual bool ShouldDrop (const Ipv4Header &ipHeader, const TcpHeader &tcpHeader,
                           uint32_t packetSize);

protected:
  TcpHeader::Flags_t m_flagsToKill;
  int m_killNumber;

private:
  virtual void DoReset (void);
};

} // namespace ns3

#endif // TCPERRORCHANNEL_H