NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.0: NDN, CCN, CCNx, content centric networks
API Documentation
best-route-strategy.cpp
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
26 #include "best-route-strategy.hpp"
27 
28 namespace nfd {
29 namespace fw {
30 
31 const Name BestRouteStrategy::STRATEGY_NAME("ndn:/localhost/nfd/strategy/best-route/%FD%01");
32 NFD_REGISTER_STRATEGY(BestRouteStrategy);
33 
35  : Strategy(forwarder, name)
36 {
37 }
38 
40 {
41 }
42 
43 static inline bool
44 predicate_PitEntry_canForwardTo_NextHop(shared_ptr<pit::Entry> pitEntry,
45  const fib::NextHop& nexthop)
46 {
47  return pitEntry->canForwardTo(*nexthop.getFace());
48 }
49 
50 void
52  const Interest& interest,
53  shared_ptr<fib::Entry> fibEntry,
54  shared_ptr<pit::Entry> pitEntry)
55 {
56  if (pitEntry->hasUnexpiredOutRecords()) {
57  // not a new Interest, don't forward
58  return;
59  }
60 
61  const fib::NextHopList& nexthops = fibEntry->getNextHops();
62  fib::NextHopList::const_iterator it = std::find_if(nexthops.begin(), nexthops.end(),
63  bind(&predicate_PitEntry_canForwardTo_NextHop, pitEntry, _1));
64 
65  if (it == nexthops.end()) {
66  this->rejectPendingInterest(pitEntry);
67  return;
68  }
69 
70  shared_ptr<Face> outFace = it->getFace();
71  this->sendInterest(pitEntry, outFace);
72 }
73 
74 } // namespace fw
75 } // namespace nfd
static bool predicate_PitEntry_canForwardTo_NextHop(shared_ptr< pit::Entry > pitEntry, const fib::NextHop &nexthop)
main class of NFD
Definition: forwarder.hpp:55
represents an Interest packet
Definition: interest.hpp:45
BestRouteStrategy(Forwarder &forwarder, const Name &name=STRATEGY_NAME)
Copyright (c) 2011-2015 Regents of the University of California.
Definition: ndn-common.hpp:40
NFD_REGISTER_STRATEGY(AccessStrategy)
std::vector< fib::NextHop > NextHopList
Definition: fib-entry.hpp:48
Name abstraction to represent an absolute name.
Definition: name.hpp:46
const shared_ptr< Face > & getFace() const
Definition: fib-nexthop.cpp:38
void rejectPendingInterest(shared_ptr< pit::Entry > pitEntry)
decide that a pending Interest cannot be forwarded
Definition: strategy.hpp:216
represents a forwarding strategy
Definition: strategy.hpp:38
void sendInterest(shared_ptr< pit::Entry > pitEntry, shared_ptr< Face > outFace, bool wantNewNonce=false)
send Interest to outFace
Definition: strategy.hpp:208
virtual void afterReceiveInterest(const Face &inFace, const Interest &interest, shared_ptr< fib::Entry > fibEntry, shared_ptr< pit::Entry > pitEntry) 1
trigger after Interest is received
represents a nexthop record in FIB entry
Definition: fib-nexthop.hpp:38