Yanbiao Li
32dab97321
Feasibility of transport persistency change can be checked with Transport::canChangePersistencyTo before executing the actual change. This enables management to verify persistency and other parameters in a faces/update command before applying the updates. Change-Id: Ia283f0daf678f47aad7b78b7e06dee4827f57cab refs: #3232
94 lines
3.5 KiB
C++
94 lines
3.5 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/**
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* Copyright (c) 2014-2017, Regents of the University of California,
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* Arizona Board of Regents,
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* Colorado State University,
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* University Pierre & Marie Curie, Sorbonne University,
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* Washington University in St. Louis,
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* Beijing Institute of Technology,
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* The University of Memphis.
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*
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* This file is part of NFD (Named Data Networking Forwarding Daemon).
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* See AUTHORS.md for complete list of NFD authors and contributors.
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*
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* NFD is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Foundation,
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* either version 3 of the License, or (at your option) any later version.
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*
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* NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "multicast-udp-transport.hpp"
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#include "udp-protocol.hpp"
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namespace nfd {
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namespace face {
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NFD_LOG_INCLASS_2TEMPLATE_SPECIALIZATION_DEFINE(DatagramTransport, MulticastUdpTransport::protocol,
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Multicast, "MulticastUdpTransport");
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MulticastUdpTransport::MulticastUdpTransport(const protocol::endpoint& localEndpoint,
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const protocol::endpoint& multicastGroup,
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protocol::socket&& recvSocket,
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protocol::socket&& sendSocket)
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: DatagramTransport(std::move(recvSocket))
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, m_multicastGroup(multicastGroup)
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, m_sendSocket(std::move(sendSocket))
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{
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this->setLocalUri(FaceUri(localEndpoint));
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this->setRemoteUri(FaceUri(multicastGroup));
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this->setScope(ndn::nfd::FACE_SCOPE_NON_LOCAL);
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this->setPersistency(ndn::nfd::FACE_PERSISTENCY_PERMANENT);
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this->setLinkType(ndn::nfd::LINK_TYPE_MULTI_ACCESS);
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this->setMtu(udp::computeMtu(localEndpoint));
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NFD_LOG_FACE_INFO("Creating transport");
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}
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void
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MulticastUdpTransport::doSend(Transport::Packet&& packet)
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{
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NFD_LOG_FACE_TRACE(__func__);
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m_sendSocket.async_send_to(boost::asio::buffer(packet.packet), m_multicastGroup,
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bind(&MulticastUdpTransport::handleSend, this,
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boost::asio::placeholders::error,
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boost::asio::placeholders::bytes_transferred,
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packet.packet));
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}
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void
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MulticastUdpTransport::doClose()
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{
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if (m_sendSocket.is_open()) {
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NFD_LOG_FACE_TRACE("Closing sending socket");
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// Cancel all outstanding operations and close the socket.
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// Use the non-throwing variants and ignore errors, if any.
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boost::system::error_code error;
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m_sendSocket.cancel(error);
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m_sendSocket.close(error);
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}
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DatagramTransport::doClose();
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}
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template<>
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Transport::EndpointId
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DatagramTransport<boost::asio::ip::udp, Multicast>::makeEndpointId(const protocol::endpoint& ep)
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{
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// IPv6 multicast is not supported
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BOOST_ASSERT(ep.address().is_v4());
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return (static_cast<uint64_t>(ep.port()) << 32) |
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static_cast<uint64_t>(ep.address().to_v4().to_ulong());
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}
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} // namespace face
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} // namespace nfd
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