nfd::fw::RetxSuppressionExponential Class Reference

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

#include <retx-suppression-exponential.hpp>

Collaboration diagram for nfd::fw::RetxSuppressionExponential:

Classes
class	PitInfo

Public Types
typedef time::microseconds	Duration
	time granularity More...

Public Member Functions
	RetxSuppressionExponential (const Duration &initialInterval=DEFAULT_INITIAL_INTERVAL, float multiplier=DEFAULT_MULTIPLIER, const Duration &maxInterval=DEFAULT_MAX_INTERVAL)
RetxSuppressionResult	decidePerPitEntry (pit::Entry &pitEntry)
	determines whether Interest is a retransmission per pit entry and if so, whether it shall be forwarded or suppressed More...
RetxSuppressionResult	decidePerUpstream (pit::Entry &pitEntry, Face &outFace)
	determines whether Interest is a retransmission per upstream and if so, whether it shall be forwarded or suppressed More...
void	incrementIntervalForOutRecord (pit::OutRecord &outRecord)
	Increment the suppression interval for out record. More...

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

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 41 of file retx-suppression-exponential.hpp.

Member Typedef Documentation

Duration

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

time granularity

Definition at line 46 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 59 of file retx-suppression-exponential.cpp.

Member Function Documentation

decidePerPitEntry()

RetxSuppressionResult nfd::fw::RetxSuppressionExponential::decidePerPitEntry

(

pit::Entry &

pitEntry

)

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

Definition at line 72 of file retx-suppression-exponential.cpp.

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

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

decidePerUpstream()

RetxSuppressionResult nfd::fw::RetxSuppressionExponential::decidePerUpstream	(	pit::Entry &	pitEntry,
		Face &	outFace
	)

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

Definition at line 97 of file retx-suppression-exponential.cpp.

References nfd::fw::FORWARD, nfd::pit::Entry::getOutRecord(), nfd::fw::NEW, ndn::time::steady_clock::now(), nfd::pit::Entry::out_end(), nfd::fw::SUPPRESS, and nfd::fw::RetxSuppressionExponential::PitInfo::suppressionInterval.

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

incrementIntervalForOutRecord()

void nfd::fw::RetxSuppressionExponential::incrementIntervalForOutRecord

(

pit::OutRecord &

outRecord

)

Increment the suppression interval for out record.

Definition at line 121 of file retx-suppression-exponential.cpp.

References nfd::StrategyInfoHost::insertStrategyInfo(), and nfd::fw::RetxSuppressionExponential::PitInfo::suppressionInterval.

Referenced by nfd::fw::MulticastStrategy::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 73 of file retx-suppression-exponential.hpp.

DEFAULT_MULTIPLIER

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

static

Definition at line 77 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 78 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