/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
 * Copyright (c) 2014,  Regents of the University of California,
 *                      Arizona Board of Regents,
 *                      Colorado State University,
 *                      University Pierre & Marie Curie, Sorbonne University,
 *                      Washington University in St. Louis,
 *                      Beijing Institute of Technology,
 *                      The University of Memphis
 *
 * This file is part of NFD (Named Data Networking Forwarding Daemon).
 * See AUTHORS.md for complete list of NFD authors and contributors.
 *
 * NFD is free software: you can redistribute it and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 *
 * NFD 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
 * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef NFD_DAEMON_FACE_MULTICAST_UDP_FACE_HPP
#define NFD_DAEMON_FACE_MULTICAST_UDP_FACE_HPP

#include "datagram-face.hpp"

namespace nfd {

/**
 * \brief Implementation of Face abstraction that uses
 *        multicast UDP as underlying transport mechanism
 */
class MulticastUdpFace : public DatagramFace<boost::asio::ip::udp, Multicast>
{
public:
  /**
   * \brief Creates a UDP-based face for multicast communication
   */
  MulticastUdpFace(const shared_ptr<protocol::socket>& recvSocket,
                   const shared_ptr<protocol::socket>& sendSocket,
                   const protocol::endpoint& localEndpoint,
                   const protocol::endpoint& multicastEndpoint);

  const protocol::endpoint&
  getMulticastGroup() const;

  // from Face
  void
  sendInterest(const Interest& interest) DECL_OVERRIDE;

  void
  sendData(const Data& data) DECL_OVERRIDE;

  bool
  isMultiAccess() const DECL_OVERRIDE;

private:
  void
  sendBlock(const Block& block);

private:
  protocol::endpoint m_multicastGroup;
  shared_ptr<protocol::socket> m_sendSocket;
};

} // namespace nfd

#endif // NFD_DAEMON_FACE_MULTICAST_UDP_FACE_HPP