nfd::fw::BestRouteStrategy2 Class Reference

Best Route strategy version 3. More...

#include <best-route-strategy2.hpp>

Inheritance diagram for nfd::fw::BestRouteStrategy2:

Collaboration diagram for nfd::fw::BestRouteStrategy2:

Public Member Functions
	BestRouteStrategy2 (Forwarder &forwarder, const Name &name=STRATEGY_NAME)
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 Name &	getName () 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...
MeasurementsAccessor &	getMeasurements ()
shared_ptr< Face >	getFace (FaceId id)
const FaceTable &	getFaceTable ()
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 3.

This strategy forwards a new Interest to the lowest-cost nexthop (except downstream). After that, if consumer retransmits the Interest (and is not suppressed according to exponential backoff algorithm), the strategy forwards the Interest again to the lowest-cost nexthop (except downstream) that is not previously used. If all nexthops have been used, the strategy starts over.

Definition at line 43 of file best-route-strategy2.hpp.

Constructor & Destructor Documentation

nfd::fw::BestRouteStrategy2::BestRouteStrategy2	(	Forwarder &	forwarder,
		const Name &	name = STRATEGY_NAME
	)

Definition at line 37 of file best-route-strategy2.cpp.

Member Function Documentation

void nfd::fw::BestRouteStrategy2::afterReceiveInterest ( const Face &  inFace, const Interest &  interest, shared_ptr< fib::Entry >  fibEntry, shared_ptr< pit::Entry >  pitEntry  )

virtual

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

Note

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.

Definition at line 99 of file best-route-strategy2.cpp.

References nfd::fw::RetxSuppressionExponential::decide(), nfd::fw::findEligibleNextHopWithEarliestOutRecord(), nfd::Face::getId(), nfd::fw::RetxSuppression::NEW, NFD_LOG_DEBUG, ndn::time::steady_clock::now(), nfd::fw::predicate_NextHop_eligible(), nfd::fw::Strategy::rejectPendingInterest(), nfd::fw::Strategy::sendInterest(), and nfd::fw::RetxSuppression::SUPPRESS.

Member Data Documentation

const Name nfd::fw::BestRouteStrategy2::STRATEGY_NAME

static

Definition at line 55 of file best-route-strategy2.hpp.

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

• ndnSIM/NFD/daemon/fw/best-route-strategy2.hpp
• ndnSIM/NFD/daemon/fw/best-route-strategy2.cpp