/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2009 IITP RAS

 *

 * 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

 *

 * Authors: Kirill Andreev <andreev@iitp.ru>

 */

#include "ns3/test.h"

#include "ns3/node-container.h"

#include "ns3/nstime.h"

#include "ns3/ipv4-interface-container.h"

#include "ns3/pcap-file.h"

using namespace ns3;

/**

 * \ingroup dot11s

 * \brief test for multihop path establishing and path error

 * procedures

 * Initiate scenario with 6 stations. Procedure of opening peer link

 * is the following: (PMP routines are not shown)

 * \verbatim

 *      1    2    3    4    5    6

 *      |    |    |    |    |<---|--->  ARP request (first attempt has failed!)

 *      |....|....|....|....|....|      ARP request

 *      |<---|--->|    |    |    |      ARP request

 *  <---|--->|    |    |    |    |      PREQ       } This order is broken

 *  <---|--->|    |    |    |    |      ARP request} due to BroadcastDca 

 *      |<---|--->|    |    |    |      PREQ

 *      |....|....|....|....|....|      ARP request

 *      |    |    |    |<---|--->|      PREQ

 *      |    |    |    |    |<---|      PREP

 *      |....|....|....|....|....|      PREP 

 *      |<---|    |    |    |    |      PREP

 *      |--->|    |    |    |    |      ARP response

 *      |....|....|....|....|....|      ARP response

 *      |    |    |    |    |--->|      ARP response

 *      |    |    |    |    |<---|      Data

 *      |....|....|....|....|....|      Data

 *      |<---|    |    |    |    |      Data

 *  <---|--->|    |    |    |    |      ARP request

 *      |....|....|....|....|....|      ARP request

 *      |    |    |    |    |<---|--->  ARP request

 *      |    |    |    |    |<---|      ARP response

 *      |....|....|....|....|....|      ARP response

 *      |<---|    |    |    |    |      ARP response

 *      |--->|    |    |    |    |      Data

 * At 5 station number 4 disappears, and PERR is forwarded from 3 to 1

 * and from 5 to 6, and station 6 starts path discovery procedure

 * again:

 *      |    |<---|         |--->|      PERR (one due to beacon loss and one due to TX error)

 *      |<---|    |         |    |      PERR

 *      |    |    |         |<---|--->  PREQ

 *      |    |    |     <---|--->|      PREQ

 *      |....|....|.........|....|      Repeated attempts of PREQ

 * \endverbatim

 */

class HwmpReactiveRegressionTest : public TestCase

{

public:

  HwmpReactiveRegressionTest ();

  virtual ~HwmpReactiveRegressionTest();

  virtual void DoRun ();

  void CheckResults ();

private:

  /// \internal It is important to have pointers here

  NodeContainer * m_nodes;

  /// Simulation time

  Time m_time;

  Ipv4InterfaceContainer m_interfaces;

  void CreateNodes ();

  void CreateDevices ();

  void InstallApplications ();

  void ResetPosition ();

};