NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.0: NDN, CCN, CCNx, content centric networks
API Documentation
nfd::fw::BestRouteStrategy Class Reference

Best Route strategy version 1. More...

#include <best-route-strategy.hpp>

Inheritance diagram for nfd::fw::BestRouteStrategy:
Collaboration diagram for nfd::fw::BestRouteStrategy:

Public Member Functions

 BestRouteStrategy (Forwarder &forwarder, const Name &name=STRATEGY_NAME)
virtual ~BestRouteStrategy ()
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 More...
- Public Member Functions inherited from nfd::fw::Strategy
 Strategy (Forwarder &forwarder, const Name &name)
 construct a strategy instance More...
virtual ~Strategy ()
const NamegetName () const
 a Name that represent the Strategy program More...
virtual void beforeSatisfyInterest (shared_ptr< pit::Entry > pitEntry, const Face &inFace, const Data &data)
 trigger before PIT entry is satisfied More...
virtual void beforeExpirePendingInterest (shared_ptr< pit::Entry > pitEntry)
 trigger before PIT entry expires More...

Static Public Attributes

static const Name STRATEGY_NAME

Additional Inherited Members

- Protected Member Functions inherited from nfd::fw::Strategy
void sendInterest (shared_ptr< pit::Entry > pitEntry, shared_ptr< Face > outFace, bool wantNewNonce=false)
 send Interest to outFace More...
void rejectPendingInterest (shared_ptr< pit::Entry > pitEntry)
 decide that a pending Interest cannot be forwarded More...
MeasurementsAccessorgetMeasurements ()
shared_ptr< FacegetFace (FaceId id)
const FaceTablegetFaceTable ()
- Protected Attributes inherited from nfd::fw::Strategy
signal::Signal< FaceTable, shared_ptr< Face > > & afterAddFace
signal::Signal< FaceTable, shared_ptr< Face > > & beforeRemoveFace

Detailed Description

Best Route strategy version 1.

This strategy forwards a new Interest to the lowest-cost nexthop that is not same as the downstream, and does not violate scope. Subsequent similar Interests or consumer retransmissions are suppressed until after InterestLifetime expiry.

This strategy is superceded by Best Route strategy version 2, which allows consumer retransmissions. This version is kept for comparison purposes and is not recommended for general usage.

Definition at line 45 of file best-route-strategy.hpp.

Constructor & Destructor Documentation

nfd::fw::BestRouteStrategy::BestRouteStrategy ( Forwarder forwarder,
const Name name = STRATEGY_NAME 

Definition at line 34 of file best-route-strategy.cpp.

nfd::fw::BestRouteStrategy::~BestRouteStrategy ( )

Definition at line 39 of file best-route-strategy.cpp.

Member Function Documentation

void nfd::fw::BestRouteStrategy::afterReceiveInterest ( const Face inFace,
const Interest interest,
shared_ptr< fib::Entry fibEntry,
shared_ptr< pit::Entry pitEntry 

trigger after Interest is received

The Interest:

  • does not violate Scope
  • is not looped
  • cannot be satisfied by ContentStore
  • is under a namespace managed by this strategy

The strategy should decide whether and where to forward this Interest.

  • If the strategy decides to forward this Interest, invoke this->sendInterest one or more times, either now or shortly after
  • If strategy concludes that this Interest cannot be forwarded, invoke this->rejectPendingInterest so that PIT entry will be deleted shortly
The strategy is permitted to store a weak reference to fibEntry. Do not store a shared reference, because PIT entry may be deleted at any moment. fibEntry is passed by value to allow obtaining a weak reference from it.
The strategy is permitted to store a shared reference to pitEntry. pitEntry is passed by value to reflect this fact.

Implements nfd::fw::Strategy.

Reimplemented in nfd::fw::ClientControlStrategy.

Definition at line 51 of file best-route-strategy.cpp.

References nfd::fw::predicate_PitEntry_canForwardTo_NextHop(), nfd::fw::Strategy::rejectPendingInterest(), and nfd::fw::Strategy::sendInterest().

Referenced by nfd::fw::ClientControlStrategy::afterReceiveInterest().

Member Data Documentation

const Name nfd::fw::BestRouteStrategy::STRATEGY_NAME

Definition at line 60 of file best-route-strategy.hpp.

The documentation for this class was generated from the following files: