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

/*

 * Copyright 2007 University of Washington

 * 

 * 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:  Tom Henderson (tomhend@u.washington.edu)

 */

#include "ns3/address.h"

#include "ns3/log.h"

#include "ns3/inet-socket-address.h"

#include "ns3/node.h"

#include "ns3/socket.h"

#include "ns3/simulator.h"

#include "ns3/socket-factory.h"

#include "ns3/packet.h"

#include "packet-sink.h"

using namespace std;

namespace ns3 {

NS_LOG_COMPONENT_DEFINE ("PacketSinkApplication");

// Constructors

PacketSink::PacketSink (Ptr<Node> n, 

                        const Address &local,

                        std::string iid)

  :  Application(n)

{

  Construct (n, local, iid);

}

void

PacketSink::Construct (Ptr<Node> n, 

                       const Address &local,

                       std::string iid)

{

  m_socket = 0;

  m_local = local;

  m_iid = iid;

}

PacketSink::~PacketSink()

{}

void

PacketSink::DoDispose (void)

{

  m_socket = 0;

  // chain up

  Application::DoDispose ();

}

// Application Methods

void PacketSink::StartApplication()    // Called at time specified by Start

{

  // Create the socket if not already

  if (!m_socket)

    {

      InterfaceId iid = InterfaceId::LookupByName (m_iid);

      Ptr<SocketFactory> socketFactory = 

        GetNode ()->QueryInterface<SocketFactory> (iid);

      m_socket = socketFactory->CreateSocket ();

      m_socket->Bind (m_local);

    }

  m_socket->SetRecvCallback (MakeCallback(&PacketSink::Receive, this));

}

void PacketSink::StopApplication()     // Called at time specified by Stop

{

  if (!m_socket) 

    {

      m_socket->SetRecvCallback (MakeNullCallback<void, Ptr<Socket>, 

    }

}

// This LOG output inspired by the application on Joseph Kopena's wiki

void PacketSink::Receive(Ptr<Socket> socket, Ptr<Packet> packet,

                       const Address &from) 

{

  if (InetSocketAddress::IsMatchingType (from))

    {

      InetSocketAddress address = InetSocketAddress::ConvertFrom (from);

      NS_LOG_INFO ("Received " << packet->GetSize() << " bytes from " << 

        address.GetIpv4() << " [" << address << "]---'" << 

        packet->PeekData() << "'");

      // TODO:  Add a tracing source here

    }

}

} // Namespace ns3