NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.3: NDN, CCN, CCNx, content centric networks 		API Documentation
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nfd::fw::RetxSuppressionExponential Class Reference

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

#include <retx-suppression-exponential.hpp>

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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

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

time granularity

Definition at line 46 of file retx-suppression-exponential.hpp.

Constructor & Destructor Documentation

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

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().

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().

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

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.

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

Definition at line 77 of file retx-suppression-exponential.hpp.

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.

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