face: UdpTransport

Change-Id: I54f43248785437cdf951d50099e46e9689962a75
Refs: #3168
diff --git a/daemon/face/multicast-udp-transport.hpp b/daemon/face/multicast-udp-transport.hpp
new file mode 100644
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+++ b/daemon/face/multicast-udp-transport.hpp
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+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2015,  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_TRANSPORT_HPP
+#define NFD_DAEMON_FACE_MULTICAST_UDP_TRANSPORT_HPP
+
+#include "datagram-transport.hpp"
+
+namespace nfd {
+namespace face {
+
+/**
+ * \brief A Transport that communicates on a UDP multicast group
+ */
+class MulticastUdpTransport : public DatagramTransport<boost::asio::ip::udp, Multicast>
+{
+public:
+  /**
+   * \brief Creates a UDP-based transport for multicast communication
+   * \param recvSocket socket used to receive packets
+   * \param sendSocket socket used to send to the multicast address
+   */
+  MulticastUdpTransport(const protocol::endpoint& localEndpoint,
+                        const protocol::endpoint& multicastGroup,
+                        protocol::socket&& recvSocket, protocol::socket&& sendSocket);
+
+private:
+  virtual void
+  doSend(Transport::Packet&& packet) DECL_OVERRIDE;
+
+  virtual void
+  doClose() DECL_OVERRIDE;
+
+private:
+  protocol::endpoint m_multicastGroup;
+  protocol::socket m_sendSocket;
+};
+
+} // namespace face
+} // namespace nfd
+
+#endif // NFD_DAEMON_FACE_MULTICAST_UDP_TRANSPORT_HPP