nfd::fw::RetxSuppressionExponential Class Reference

a retransmission suppression decision algorithm that suppresses retransmissions using exponential backoff More...

#include <retx-suppression-exponential.hpp>

Inheritance diagram for nfd::fw::RetxSuppressionExponential:

Collaboration diagram for nfd::fw::RetxSuppressionExponential:

Classes
class	PitInfo

Public Types
typedef time::microseconds	Duration
	time granularity More...
Public Types inherited from nfd::fw::RetxSuppression
enum	Result { NEW, FORWARD, SUPPRESS }

Public Member Functions
	RetxSuppressionExponential (const Duration &initialInterval=DEFAULT_INITIAL_INTERVAL, float multiplier=DEFAULT_MULTIPLIER, const Duration &maxInterval=DEFAULT_MAX_INTERVAL)
virtual Result	decide (const Face &inFace, const Interest &interest, pit::Entry &pitEntry) const override
	determines whether Interest is a retransmission, and if so, whether it shall be forwarded or suppressed More...

Static Public Attributes
static const Duration	DEFAULT_INITIAL_INTERVAL
static const float	DEFAULT_MULTIPLIER = 2.0
static const Duration	DEFAULT_MAX_INTERVAL

Additional Inherited Members
Protected Member Functions inherited from nfd::fw::RetxSuppression
time::steady_clock::TimePoint	getLastOutgoing (const pit::Entry &pitEntry) const

Detailed Description

a retransmission suppression decision algorithm that suppresses retransmissions using exponential backoff

The i-th retransmission will be suppressed if the last transmission (out-record) occurred within MIN(initialInterval * multiplier^(i-1), maxInterval)

Definition at line 40 of file retx-suppression-exponential.hpp.

Member Typedef Documentation

Duration

typedef time::microseconds nfd::fw::RetxSuppressionExponential::Duration

time granularity

Definition at line 45 of file retx-suppression-exponential.hpp.

Constructor & Destructor Documentation

RetxSuppressionExponential()

nfd::fw::RetxSuppressionExponential::RetxSuppressionExponential ( const Duration &  initialInterval = DEFAULT_INITIAL_INTERVAL, float  multiplier = DEFAULT_MULTIPLIER, const Duration &  maxInterval = DEFAULT_MAX_INTERVAL  )

explicit

Definition at line 60 of file retx-suppression-exponential.cpp.

Member Function Documentation

decide()

RetxSuppression::Result nfd::fw::RetxSuppressionExponential::decide ( const Face &  inFace, const Interest &  interest, pit::Entry &  pitEntry  ) const

overridevirtual

determines whether Interest is a retransmission, and if so, whether it shall be forwarded or suppressed

Implements nfd::fw::RetxSuppression.

Definition at line 73 of file retx-suppression-exponential.cpp.

References nfd::fw::RetxSuppression::FORWARD, nfd::fw::RetxSuppression::getLastOutgoing(), nfd::fw::hasPendingOutRecords(), nfd::StrategyInfoHost::insertStrategyInfo(), nfd::fw::RetxSuppression::NEW, ndn::time::steady_clock::now(), nfd::fw::RetxSuppression::SUPPRESS, and nfd::fw::RetxSuppressionExponential::PitInfo::suppressionInterval.

Referenced by nfd::fw::asf::AsfStrategy::afterReceiveInterest(), and nfd::fw::BestRouteStrategy2::afterReceiveInterest().

Member Data Documentation

DEFAULT_INITIAL_INTERVAL

const RetxSuppressionExponential::Duration nfd::fw::RetxSuppressionExponential::DEFAULT_INITIAL_INTERVAL

static

Initial value:

=
    time::milliseconds(1)

Definition at line 62 of file retx-suppression-exponential.hpp.

DEFAULT_MULTIPLIER

const float nfd::fw::RetxSuppressionExponential::DEFAULT_MULTIPLIER = 2.0

static

Definition at line 66 of file retx-suppression-exponential.hpp.

DEFAULT_MAX_INTERVAL

const RetxSuppressionExponential::Duration nfd::fw::RetxSuppressionExponential::DEFAULT_MAX_INTERVAL

static

Initial value:

=
    time::milliseconds(250)

Definition at line 67 of file retx-suppression-exponential.hpp.

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

• ndnSIM/NFD/daemon/fw/retx-suppression-exponential.hpp
• ndnSIM/NFD/daemon/fw/retx-suppression-exponential.cpp