| /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
| /** |
| * Copyright (c) 2014-2016, 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_FW_ASF_STRATEGY_HPP |
| #define NFD_DAEMON_FW_ASF_STRATEGY_HPP |
| |
| #include "asf-measurements.hpp" |
| #include "asf-probing-module.hpp" |
| #include "fw/retx-suppression-exponential.hpp" |
| #include "fw/strategy.hpp" |
| |
| namespace nfd { |
| namespace fw { |
| namespace asf { |
| |
| /** \brief Adaptive SRTT-based Forwarding Strategy |
| * |
| * \see Vince Lehman, Ashlesh Gawande, Rodrigo Aldecoa, Dmitri Krioukov, Beichuan Zhang, Lixia Zhang, and Lan Wang, |
| * "An Experimental Investigation of Hyperbolic Routing with a Smart Forwarding Plane in NDN," |
| * NDN Technical Report NDN-0042, 2016. http://named-data.net/techreports.html |
| */ |
| class AsfStrategy : public Strategy |
| { |
| public: |
| explicit |
| AsfStrategy(Forwarder& forwarder, const Name& name = STRATEGY_NAME); |
| |
| virtual |
| ~AsfStrategy(); |
| |
| public: // triggers |
| virtual void |
| afterReceiveInterest(const Face& inFace, |
| const Interest& interest, |
| shared_ptr<pit::Entry> pitEntry) override; |
| |
| virtual void |
| beforeSatisfyInterest(shared_ptr<pit::Entry> pitEntry, |
| const Face& inFace, const Data& data) override; |
| |
| virtual void |
| afterReceiveNack(const Face& inFace, const lp::Nack& nack, |
| shared_ptr<pit::Entry> pitEntry) override; |
| |
| private: |
| void |
| forwardInterest(const Interest& interest, |
| const fib::Entry& fibEntry, |
| shared_ptr<pit::Entry> pitEntry, |
| shared_ptr<Face> outFace, |
| bool wantNewNonce = false); |
| |
| const shared_ptr<Face> |
| getBestFaceForForwarding(const fib::Entry& fibEntry, const ndn::Interest& interest, const Face& inFace); |
| |
| void |
| onTimeout(const ndn::Name& interestName, nfd::face::FaceId faceId); |
| |
| void |
| sendNoRouteNack(const Face& inFace, const Interest& interest, shared_ptr<pit::Entry> pitEntry); |
| |
| public: |
| static const Name STRATEGY_NAME; |
| |
| private: |
| AsfMeasurements m_measurements; |
| ProbingModule m_probing; |
| |
| private: |
| RetxSuppressionExponential m_retxSuppression; |
| |
| static const time::milliseconds RETX_SUPPRESSION_INITIAL; |
| static const time::milliseconds RETX_SUPPRESSION_MAX; |
| }; |
| |
| } // namespace asf |
| |
| using asf::AsfStrategy; |
| |
| } // namespace fw |
| } // namespace nfd |
| |
| #endif // NFD_DAEMON_FW_ASF_STRATEGY_HPP |