/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
/*
 * Copyright (c) 2013 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>
 *
 */

#include "ndn-udp-face.hpp"
#include "ns3/ndn-l3-protocol.hpp"

#include "ns3/log.h"
#include "ns3/packet.h"
#include "ns3/node.h"
#include "ns3/pointer.h"
#include "ns3/udp-socket-factory.h"

using namespace std;

NS_LOG_COMPONENT_DEFINE("ndn.UdpFace");

namespace ns3 {
namespace ndn {

NS_OBJECT_ENSURE_REGISTERED(UdpFace);

TypeId
UdpFace::GetTypeId()
{
  static TypeId tid = TypeId("ns3::ndn::UdpFace").SetParent<Face>().SetGroupName("Ndn");
  return tid;
}

/**
 * By default, Ndn face are created in the "down" state.  Before
 * becoming useable, the user must invoke SetUp on the face
 */
UdpFace::UdpFace(Ptr<Node> node, Ptr<Socket> socket, Ipv4Address address)
  : Face(node)
  , m_socket(socket)
  , m_address(address)
{
  SetMetric(1); // default metric
}

UdpFace::~UdpFace()
{
  NS_LOG_FUNCTION_NOARGS();
}

UdpFace& UdpFace::operator= (const UdpFace &)
{
  return *this;
}

bool
UdpFace::ReceiveFromUdp(Ptr<const Packet> p)
{
  return Face::Receive(p);
}

bool
UdpFace::Send(Ptr<Packet> packet)
{
  if (!Face::Send(packet)) {
    return false;
  }

  NS_LOG_FUNCTION(this << packet);
  m_socket->Send(packet);

  return true;
}

Ipv4Address
UdpFace::GetAddress() const
{
  return m_address;
}

std::ostream&
UdpFace::Print(std::ostream& os) const
{
  os << "dev=udp(" << GetId() << "," << GetAddress() << ")";
  return os;
}

} // namespace ndn
} // namespace ns3