udp-factory.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2014-2021,  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_UDP_FACTORY_HPP
#define NFD_DAEMON_FACE_UDP_FACTORY_HPP

#include "protocol-factory.hpp"
#include "udp-channel.hpp"

namespace nfd {
namespace face {

class UdpFactory final : public ProtocolFactory
{
public:
  class Error : public ProtocolFactory::Error
  {
  public:
    using ProtocolFactory::Error::Error;
  };

  static const std::string&
  getId() noexcept;

  explicit
  UdpFactory(const CtorParams& params);

  shared_ptr<UdpChannel>
  createChannel(const udp::Endpoint& localEndpoint,
                time::nanoseconds idleTimeout);

  shared_ptr<Face>
  createMulticastFace(const shared_ptr<const ndn::net::NetworkInterface>& netif,
                      const boost::asio::ip::address& localAddress,
                      const udp::Endpoint& multicastEndpoint);

private:
  void
  doProcessConfig(OptionalConfigSection configSection,
                  FaceSystem::ConfigContext& context) final;

  void
  doCreateFace(const CreateFaceRequest& req,
               const FaceCreatedCallback& onCreated,
               const FaceCreationFailedCallback& onFailure) final;

  std::vector<shared_ptr<const Channel>>
  doGetChannels() const final;

  std::vector<shared_ptr<Face>>
  applyMcastConfigToNetif(const shared_ptr<const ndn::net::NetworkInterface>& netif);

  void
  applyMcastConfig(const FaceSystem::ConfigContext& context);

private:
  bool m_wantCongestionMarking = false;
  size_t m_defaultUnicastMtu = ndn::MAX_NDN_PACKET_SIZE;
  std::map<udp::Endpoint, shared_ptr<UdpChannel>> m_channels;

  struct MulticastConfig
  {
    bool isEnabled = false;
    udp::Endpoint group = udp::getDefaultMulticastGroup();
    udp::Endpoint groupV6 = udp::getDefaultMulticastGroupV6();
    ndn::nfd::LinkType linkType = ndn::nfd::LINK_TYPE_MULTI_ACCESS;
    NetworkInterfacePredicate netifPredicate;
  };
  MulticastConfig m_mcastConfig;
  std::map<udp::Endpoint, shared_ptr<Face>> m_mcastFaces;

  signal::ScopedConnection m_netifAddConn;
  struct NetifConns
  {
    signal::ScopedConnection addrAddConn;
  };
  std::map<int, NetifConns> m_netifConns; // ifindex => signal connections
};

} // namespace face
} // namespace nfd

#endif // NFD_DAEMON_FACE_UDP_FACTORY_HPP