asf-strategy.hpp
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6  * University Pierre & Marie Curie, Sorbonne University,
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8  * Beijing Institute of Technology,
9  * The University of Memphis.
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25 
26 #ifndef NFD_DAEMON_FW_ASF_STRATEGY_HPP
27 #define NFD_DAEMON_FW_ASF_STRATEGY_HPP
28 
29 #include "asf-measurements.hpp"
30 #include "asf-probing-module.hpp"
32 #include "fw/strategy.hpp"
33 
34 namespace nfd {
35 namespace fw {
36 namespace asf {
37 
46 class AsfStrategy : public Strategy
47 {
48 public:
49  explicit
50  AsfStrategy(Forwarder& forwarder, const Name& name = getStrategyName());
51 
52  static const Name&
54 
55 public: // triggers
56  void
57  afterReceiveInterest(const FaceEndpoint& ingress, const Interest& interest,
58  const shared_ptr<pit::Entry>& pitEntry) override;
59 
60  void
61  beforeSatisfyInterest(const shared_ptr<pit::Entry>& pitEntry,
62  const FaceEndpoint& ingress, const Data& data) override;
63 
64  void
65  afterReceiveNack(const FaceEndpoint& ingress, const lp::Nack& nack,
66  const shared_ptr<pit::Entry>& pitEntry) override;
67 
68 private:
69  void
70  processParams(const PartialName& parsed);
71 
72  void
73  forwardInterest(const Interest& interest, Face& outFace, const fib::Entry& fibEntry,
74  const shared_ptr<pit::Entry>& pitEntry, bool wantNewNonce = false);
75 
76  void
77  sendProbe(const Interest& interest, const FaceEndpoint& ingress, const Face& faceToUse,
78  const fib::Entry& fibEntry, const shared_ptr<pit::Entry>& pitEntry);
79 
80  Face*
81  getBestFaceForForwarding(const Interest& interest, const Face& inFace,
82  const fib::Entry& fibEntry, const shared_ptr<pit::Entry>& pitEntry,
83  bool isNewInterest = true);
84 
85  void
86  onTimeout(const Name& interestName, FaceId faceId);
87 
88  void
89  sendNoRouteNack(const FaceEndpoint& ingress, const shared_ptr<pit::Entry>& pitEntry);
90 
91 private:
92  AsfMeasurements m_measurements;
93  ProbingModule m_probing;
94  RetxSuppressionExponential m_retxSuppression;
95  size_t m_maxSilentTimeouts = 0;
96 
97  static const time::milliseconds RETX_SUPPRESSION_INITIAL;
98  static const time::milliseconds RETX_SUPPRESSION_MAX;
99 };
100 
101 } // namespace asf
102 
103 using asf::AsfStrategy;
104 
105 } // namespace fw
106 } // namespace nfd
107 
108 #endif // NFD_DAEMON_FW_ASF_STRATEGY_HPP
Main class of NFD&#39;s forwarding engine.
Definition: forwarder.hpp:51
static const Name & getStrategyName()
represents a FIB entry
Definition: fib-entry.hpp:53
void beforeSatisfyInterest(const shared_ptr< pit::Entry > &pitEntry, const FaceEndpoint &ingress, const Data &data) override
trigger before PIT entry is satisfied
void afterReceiveNack(const FaceEndpoint &ingress, const lp::Nack &nack, const shared_ptr< pit::Entry > &pitEntry) override
trigger after Nack is received
Represents a face-endpoint pair in the forwarder.
Copyright (c) 2014-2015, Regents of the University of California, Arizona Board of Regents...
Definition: algorithm.hpp:32
a retransmission suppression decision algorithm that suppresses retransmissions using exponential bac...
represents a forwarding strategy
Definition: strategy.hpp:37
void afterReceiveInterest(const FaceEndpoint &ingress, const Interest &interest, const shared_ptr< pit::Entry > &pitEntry) override
trigger after Interest is received
uint64_t FaceId
Identifies a face.
Definition: face-common.hpp:44
Adaptive SRTT-based Forwarding Strategy.
AsfStrategy(Forwarder &forwarder, const Name &name=getStrategyName())
Helper class to retrieve and create strategy measurements.