NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.3: NDN, CCN, CCNx, content centric networks
API Documentation
retx-suppression-fixed.cpp
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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3  * Copyright (c) 2014-2017, Regents of the University of California,
4  * Arizona Board of Regents,
5  * Colorado State University,
6  * University Pierre & Marie Curie, Sorbonne University,
7  * Washington University in St. Louis,
8  * Beijing Institute of Technology,
9  * The University of Memphis.
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11  * This file is part of NFD (Named Data Networking Forwarding Daemon).
12  * See AUTHORS.md for complete list of NFD authors and contributors.
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25 
27 
28 namespace nfd {
29 namespace fw {
30 
32 
34  : m_minRetxInterval(minRetxInterval)
35 {
36  BOOST_ASSERT(minRetxInterval > time::milliseconds::zero());
37 }
38 
41 {
42  bool isNewPitEntry = !hasPendingOutRecords(pitEntry);
43  if (isNewPitEntry) {
45  }
46 
47  time::steady_clock::TimePoint lastOutgoing = getLastOutgoing(pitEntry);
49  time::steady_clock::Duration sinceLastOutgoing = now - lastOutgoing;
50  bool shouldSuppress = sinceLastOutgoing < m_minRetxInterval;
52 }
53 
54 } // namespace fw
55 } // namespace nfd
time_point TimePoint
Definition: time.hpp:120
Interest is retransmission and should be forwarded.
static const time::milliseconds DEFAULT_MIN_RETX_INTERVAL
static time_point now() noexcept
Definition: time.cpp:80
boost::posix_time::time_duration milliseconds(long duration)
Definition: asio.hpp:117
Interest is retransmission and should be suppressed.
Copyright (c) 2011-2015 Regents of the University of California.
Definition: ndn-common.hpp:40
an Interest table entry
Definition: pit-entry.hpp:57
Interest is new (not a retransmission)
RetxSuppressionResult decidePerPitEntry(pit::Entry &pitEntry) const
determines whether Interest is a retransmission, and if so, whether it shall be forwarded or suppress...
bool hasPendingOutRecords(const pit::Entry &pitEntry)
determine whether pitEntry has any pending out-records
Definition: algorithm.cpp:113
time::steady_clock::TimePoint getLastOutgoing(const pit::Entry &pitEntry)
Definition: algorithm.cpp:124
RetxSuppressionFixed(const time::milliseconds &minRetxInterval=DEFAULT_MIN_RETX_INTERVAL)