Generate traffic to a single destination according to an OnOff pattern. More...

#include <onoff-application.h>

Inheritance diagram for ns3::OnOffApplication:

Collaboration diagram for ns3::OnOffApplication:

Public Member Functions
	OnOffApplication ()

virtual	~OnOffApplication ()

int64_t	AssignStreams (int64_t stream)
	Assign a fixed random variable stream number to the random variables used by this model. More...

Ptr< Socket >	GetSocket (void) const
	Return a pointer to associated socket. More...

void	SetMaxBytes (uint32_t maxBytes)
	Set the total number of bytes to send. More...

Public Member Functions inherited from ns3::Application
	Application ()

virtual	~Application ()

Ptr< Node >	GetNode () const

void	SetNode (Ptr< Node > node)

void	SetStartTime (Time start)
	Specify application start time. More...

void	SetStopTime (Time stop)
	Specify application stop time. More...

Public Member Functions inherited from ns3::Object
	Object ()

virtual	~Object ()

void	AggregateObject (Ptr< Object > other)

void	Dispose (void)
	Run the DoDispose methods of this object and all the objects aggregated to it. More...

AggregateIterator	GetAggregateIterator (void) const

virtual TypeId	GetInstanceTypeId (void) const

template<typename T >
Ptr< T >	GetObject (void) const

template<typename T >
Ptr< T >	GetObject (TypeId tid) const

void	Initialize (void)
	This method calls the virtual DoInitialize method on all the objects aggregated to this object. More...

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	Constructor. More...

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor. More...

uint32_t	GetReferenceCount (void) const
	Get the reference count of the object. More...

SimpleRefCount &	operator= (const SimpleRefCount &o)
	Assignment. More...

void	Ref (void) const
	Increment the reference count. More...

void	Unref (void) const
	Decrement the reference count. More...

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor. More...

void	GetAttribute (std::string name, AttributeValue &value) const

bool	GetAttributeFailSafe (std::string name, AttributeValue &attribute) const

void	SetAttribute (std::string name, const AttributeValue &value)

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)

Static Public Member Functions
static TypeId	GetTypeId (void)
	Get the type ID. More...

Static Public Member Functions inherited from ns3::Application
static TypeId	GetTypeId (void)
	Get the type ID. More...

Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId (void)
	Register this type. More...

Static Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
static void	Cleanup (void)
	Noop. More...

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId (void)
	Get the type ID. More...

Protected Member Functions
virtual void	DoDispose (void)
	This method is called by Object::Dispose or by the object's destructor, whichever comes first. More...

Protected Member Functions inherited from ns3::Application
virtual void	DoInitialize (void)
	This method is called only once by Object::Initialize. More...

Protected Member Functions inherited from ns3::Object
	Object (const Object &o)

virtual void	NotifyNewAggregate (void)
	This method is invoked whenever two sets of objects are aggregated together. More...

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)

virtual void	NotifyConstructionCompleted (void)
	This method is invoked once all member attributes have been initialized. More...

Private Member Functions
void	CancelEvents ()
	Cancel all pending events. More...

void	ConnectionFailed (Ptr< Socket > socket)
	Handle a Connection Failed event. More...

void	ConnectionSucceeded (Ptr< Socket > socket)
	Handle a Connection Succeed event. More...

void	ScheduleNextTx ()
	Schedule the next packet transmission. More...

void	ScheduleStartEvent ()
	Schedule the next On period start. More...

void	ScheduleStopEvent ()
	Schedule the next Off period start. More...

void	SendPacket ()
	Send a packet. More...

virtual void	StartApplication (void)
	Application specific startup code. More...

void	StartSending ()
	Start an On period. More...

virtual void	StopApplication (void)
	Application specific shutdown code. More...

void	StopSending ()
	Start an Off period. More...

Private Attributes
DataRate	m_cbrRate
	Rate that data is generated. More...

DataRate	m_cbrRateFailSafe
	Rate that data is generated (check copy) More...

bool	m_connected
	True if connected. More...

Time	m_lastStartTime
	Time last packet sent. More...

uint32_t	m_maxBytes
	Limit total number of bytes sent. More...

Ptr< RandomVariableStream >	m_offTime
	rng for Off Time More...

Ptr< RandomVariableStream >	m_onTime
	rng for On Time More...

Address	m_peer
	Peer address. More...

uint32_t	m_pktSize
	Size of packets. More...

uint32_t	m_residualBits
	Number of generated, but not sent, bits. More...

EventId	m_sendEvent
	Event id of pending "send packet" event. More...

Ptr< Socket >	m_socket
	Associated socket. More...

EventId	m_startStopEvent
	Event id for next start or stop event. More...

TypeId	m_tid
	Type of the socket used. More...

uint32_t	m_totBytes
	Total bytes sent so far. More...

TracedCallback< Ptr< const Packet > >	m_txTrace
	Traced Callback: transmitted packets. More...

Additional Inherited Members
Protected Attributes inherited from ns3::Application
Ptr< Node >	m_node
	The node that this application is installed on. More...

EventId	m_startEvent
	The event that will fire at m_startTime to start the application. More...

Time	m_startTime
	The simulation time that the application will start. More...

EventId	m_stopEvent
	The event that will fire at m_stopTime to end the application. More...

Time	m_stopTime
	The simulation time that the application will end. More...

Detailed Description

Generate traffic to a single destination according to an OnOff pattern.

This traffic generator follows an On/Off pattern: after Application::StartApplication is called, "On" and "Off" states alternate. The duration of each of these states is determined with the onTime and the offTime random variables. During the "Off" state, no traffic is generated. During the "On" state, cbr traffic is generated. This cbr traffic is characterized by the specified "data rate" and "packet size".

Note: When an application is started, the first packet transmission occurs after a delay equal to (packet size/bit rate). Note also, when an application transitions into an off state in between packet transmissions, the remaining time until when the next transmission would have occurred is cached and is used when the application starts up again. Example: packet size = 1000 bits, bit rate = 500 bits/sec. If the application is started at time 3 seconds, the first packet transmission will be scheduled for time 5 seconds (3 + 1000/500) and subsequent transmissions at 2 second intervals. If the above application were instead stopped at time 4 seconds, and restarted at time 5.5 seconds, then the first packet would be sent at time 6.5 seconds, because when it was stopped at 4 seconds, there was only 1 second remaining until the originally scheduled transmission, and this time remaining information is cached and used to schedule the next transmission upon restarting.

If the underlying socket type supports broadcast, this application will automatically enable the SetAllowBroadcast(true) socket option.

Config Paths

ns3::OnOffApplication is accessible through the following paths with Config::Set and Config::Connect:

/NodeList/[i]/ApplicationList/[i]/$ns3::OnOffApplication

Attributes

DataRate: The data rate in on state.
- Set with class: DataRateValue
- Underlying type: DataRate
- Initial value: 500000bps
- Flags: construct write read
PacketSize: The size of packets sent in on state
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 1:4294967295
- Initial value: 512
- Flags: construct write read
Remote: The address of the destination
- Set with class: AddressValue
- Underlying type: Address
- Initial value: 00-00-00
- Flags: construct write read
OnTime: A RandomVariableStream used to pick the duration of the 'On' state.
- Set with class: ns3::PointerValue
- Underlying type: ns3::Ptr< ns3::RandomVariableStream>
- Initial value: ns3::ConstantRandomVariable[Constant=1.0]
- Flags: construct write read
OffTime: A RandomVariableStream used to pick the duration of the 'Off' state.
- Set with class: ns3::PointerValue
- Underlying type: ns3::Ptr< ns3::RandomVariableStream>
- Initial value: ns3::ConstantRandomVariable[Constant=1.0]
- Flags: construct write read
MaxBytes: The total number of bytes to send. Once these bytes are sent, no packet is sent again, even in on state. The value zero means that there is no limit.
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 0
- Flags: construct write read
Protocol: The type of protocol to use.
- Set with class: TypeIdValue
- Underlying type: TypeId
- Initial value: ns3::UdpSocketFactory
- Flags: construct write read

Attributes defined in parent class ns3::Application

StartTime: Time at which the application will start
- Set with class: ns3::TimeValue
- Underlying type: Time –9223372036854775808.0ns:+9223372036854775807.0ns
- Initial value: +0.0ns
- Flags: construct write read
StopTime: Time at which the application will stop
- Set with class: ns3::TimeValue
- Underlying type: Time –9223372036854775808.0ns:+9223372036854775807.0ns
- Initial value: +0.0ns
- Flags: construct write read

TraceSources

Tx: A new packet is created and is sent

Definition at line 86 of file onoff-application.h.

Constructor & Destructor Documentation

ns3::OnOffApplication::OnOffApplication ( )

Definition at line 95 of file onoff-application.cc.

References NS_LOG_FUNCTION.

ns3::OnOffApplication::~OnOffApplication ( )

virtual

Definition at line 105 of file onoff-application.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

int64_t ns3::OnOffApplication::AssignStreams ( int64_t stream )

Assign a fixed random variable stream number to the random variables used by this model.

Parameters

stream first stream index to use

Returns: the number of stream indices assigned by this model

Definition at line 125 of file onoff-application.cc.

References m_offTime, m_onTime, NS_LOG_FUNCTION, and ns3::RandomVariableStream::SetStream().

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void ns3::OnOffApplication::CancelEvents ( )

private

Cancel all pending events.

Definition at line 194 of file onoff-application.cc.

References ns3::Simulator::Cancel(), ns3::DataRate::GetBitRate(), ns3::int64x64_t::GetHigh(), ns3::EventId::IsRunning(), m_cbrRate, m_cbrRateFailSafe, m_lastStartTime, m_residualBits, m_sendEvent, m_startStopEvent, ns3::Simulator::Now(), NS_LOG_FUNCTION, ns3::Time::S, and ns3::Time::To().

Referenced by StartApplication(), StopApplication(), and StopSending().

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void ns3::OnOffApplication::ConnectionFailed ( Ptr< Socket > socket )

private

Handle a Connection Failed event.

Parameters

socket the not connected socket

Definition at line 306 of file onoff-application.cc.

References NS_LOG_FUNCTION.

Referenced by StartApplication().

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void ns3::OnOffApplication::ConnectionSucceeded ( Ptr< Socket > socket )

private

Handle a Connection Succeed event.

Parameters

socket the connected socket

Definition at line 300 of file onoff-application.cc.

References m_connected, and NS_LOG_FUNCTION.

Referenced by StartApplication().

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void ns3::OnOffApplication::DoDispose ( void )

protectedvirtual

This method is called by Object::Dispose or by the object's destructor, whichever comes first.

Subclasses are expected to implement their real destruction code in an overriden version of this method and chain up to their parent's implementation once they are done. i.e., for simplicity, the destructor of every subclass should be empty and its content should be moved to the associated DoDispose method.

It is safe to call GetObject from within this method.

Reimplemented from ns3::Application.

Definition at line 134 of file onoff-application.cc.

References ns3::Application::DoDispose(), m_socket, and NS_LOG_FUNCTION.

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Ptr< Socket > ns3::OnOffApplication::GetSocket ( void ) const

Return a pointer to associated socket.

Returns: pointer to associated socket

Definition at line 118 of file onoff-application.cc.

References m_socket, and NS_LOG_FUNCTION.

TypeId ns3::OnOffApplication::GetTypeId ( void )

static

Get the type ID.

Returns: the object TypeId

Definition at line 52 of file onoff-application.cc.

References ns3::UdpSocketFactory::GetTypeId(), m_cbrRate, m_maxBytes, m_offTime, m_onTime, m_peer, m_pktSize, m_tid, m_txTrace, ns3::MakeTraceSourceAccessor(), and ns3::TypeId::SetParent().

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void ns3::OnOffApplication::ScheduleNextTx ( )

private

Schedule the next packet transmission.

Definition at line 228 of file onoff-application.cc.

References ns3::DataRate::GetBitRate(), m_cbrRate, m_maxBytes, m_pktSize, m_residualBits, m_sendEvent, m_totBytes, NS_LOG_FUNCTION, NS_LOG_LOGIC, ns3::Simulator::Schedule(), SendPacket(), and StopApplication().

Referenced by SendPacket(), and StartSending().

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void ns3::OnOffApplication::ScheduleStartEvent ( )

private

Schedule the next On period start.

Definition at line 248 of file onoff-application.cc.

References ns3::RandomVariableStream::GetValue(), m_offTime, m_startStopEvent, NS_LOG_FUNCTION, NS_LOG_LOGIC, ns3::Simulator::Schedule(), and StartSending().

Referenced by StartApplication(), and StopSending().

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void ns3::OnOffApplication::ScheduleStopEvent ( )

private

Schedule the next Off period start.

Definition at line 257 of file onoff-application.cc.

References ns3::RandomVariableStream::GetValue(), m_onTime, m_startStopEvent, NS_LOG_FUNCTION, NS_LOG_LOGIC, ns3::Simulator::Schedule(), and StopSending().

Referenced by StartSending().

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void ns3::OnOffApplication::SendPacket ( void )

private

Send a packet.

Definition at line 267 of file onoff-application.cc.

References ns3::InetSocketAddress::ConvertFrom(), ns3::Inet6SocketAddress::ConvertFrom(), ns3::InetSocketAddress::GetIpv4(), ns3::Inet6SocketAddress::GetIpv6(), ns3::InetSocketAddress::GetPort(), ns3::Inet6SocketAddress::GetPort(), ns3::EventId::IsExpired(), ns3::InetSocketAddress::IsMatchingType(), ns3::Inet6SocketAddress::IsMatchingType(), m_lastStartTime, m_peer, m_pktSize, m_residualBits, m_sendEvent, m_socket, m_totBytes, m_txTrace, ns3::Simulator::Now(), NS_ASSERT, NS_LOG_FUNCTION, NS_LOG_INFO, ScheduleNextTx(), and ns3::Socket::Send().

Referenced by ScheduleNextTx().

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void ns3::OnOffApplication::SetMaxBytes ( uint32_t maxBytes )

Set the total number of bytes to send.

Once these bytes are sent, no packet is sent again, even in on state. The value zero means that there is no limit.

Parameters

maxBytes the total number of bytes to send

Definition at line 111 of file onoff-application.cc.

References m_maxBytes, and NS_LOG_FUNCTION.

void ns3::OnOffApplication::StartApplication ( void )

privatevirtual

Application specific startup code.

The StartApplication method is called at the start time specified by Start This method should be overridden by all or most application subclasses.

Reimplemented from ns3::Application.

Definition at line 144 of file onoff-application.cc.

References ns3::Socket::Bind(), ns3::Socket::Bind6(), CancelEvents(), ns3::Socket::Connect(), ConnectionFailed(), ConnectionSucceeded(), ns3::Socket::CreateSocket(), ns3::Application::GetNode(), ns3::InetSocketAddress::IsMatchingType(), ns3::Inet6SocketAddress::IsMatchingType(), ns3::PacketSocketAddress::IsMatchingType(), m_cbrRate, m_cbrRateFailSafe, m_peer, m_socket, m_tid, ns3::MakeCallback(), NS_LOG_FUNCTION, ScheduleStartEvent(), ns3::Socket::SetAllowBroadcast(), ns3::Socket::SetConnectCallback(), and ns3::Socket::ShutdownRecv().

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void ns3::OnOffApplication::StartSending ( )

private

Start an On period.

Definition at line 211 of file onoff-application.cc.

References m_lastStartTime, ns3::Simulator::Now(), NS_LOG_FUNCTION, ScheduleNextTx(), and ScheduleStopEvent().

Referenced by ScheduleStartEvent().

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void ns3::OnOffApplication::StopApplication ( void )

privatevirtual

Application specific shutdown code.

The StopApplication method is called at the stop time specified by Stop This method should be overridden by all or most application subclasses.

Reimplemented from ns3::Application.

Definition at line 179 of file onoff-application.cc.

References CancelEvents(), ns3::Socket::Close(), m_socket, NS_LOG_FUNCTION, and NS_LOG_WARN.

Referenced by ScheduleNextTx().

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void ns3::OnOffApplication::StopSending ( )

private

Start an Off period.

Definition at line 219 of file onoff-application.cc.

References CancelEvents(), NS_LOG_FUNCTION, and ScheduleStartEvent().

Referenced by ScheduleStopEvent().

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Member Data Documentation

DataRate ns3::OnOffApplication::m_cbrRate

private

Rate that data is generated.

Definition at line 156 of file onoff-application.h.

Referenced by CancelEvents(), GetTypeId(), ScheduleNextTx(), and StartApplication().

DataRate ns3::OnOffApplication::m_cbrRateFailSafe

private

Rate that data is generated (check copy)

Definition at line 157 of file onoff-application.h.

Referenced by CancelEvents(), and StartApplication().

bool ns3::OnOffApplication::m_connected

private

True if connected.

Definition at line 153 of file onoff-application.h.

Referenced by ConnectionSucceeded().

Time ns3::OnOffApplication::m_lastStartTime

private

Time last packet sent.

Definition at line 160 of file onoff-application.h.

Referenced by CancelEvents(), SendPacket(), and StartSending().

uint32_t ns3::OnOffApplication::m_maxBytes

private

Limit total number of bytes sent.

Definition at line 161 of file onoff-application.h.

Referenced by GetTypeId(), ScheduleNextTx(), and SetMaxBytes().

Ptr<RandomVariableStream> ns3::OnOffApplication::m_offTime

private

rng for Off Time

Definition at line 155 of file onoff-application.h.

Referenced by AssignStreams(), GetTypeId(), and ScheduleStartEvent().

Ptr<RandomVariableStream> ns3::OnOffApplication::m_onTime

private

rng for On Time

Definition at line 154 of file onoff-application.h.

Referenced by AssignStreams(), GetTypeId(), and ScheduleStopEvent().

Address ns3::OnOffApplication::m_peer

private

Peer address.

Definition at line 152 of file onoff-application.h.

Referenced by GetTypeId(), SendPacket(), and StartApplication().

uint32_t ns3::OnOffApplication::m_pktSize

private

Size of packets.

Definition at line 158 of file onoff-application.h.

Referenced by GetTypeId(), ScheduleNextTx(), and SendPacket().

uint32_t ns3::OnOffApplication::m_residualBits

private

Number of generated, but not sent, bits.

Definition at line 159 of file onoff-application.h.

Referenced by CancelEvents(), ScheduleNextTx(), and SendPacket().

EventId ns3::OnOffApplication::m_sendEvent

private

Event id of pending "send packet" event.

Definition at line 164 of file onoff-application.h.

Referenced by CancelEvents(), ScheduleNextTx(), and SendPacket().

Ptr<Socket> ns3::OnOffApplication::m_socket

private

Associated socket.

Definition at line 151 of file onoff-application.h.

Referenced by DoDispose(), GetSocket(), SendPacket(), StartApplication(), and StopApplication().

EventId ns3::OnOffApplication::m_startStopEvent

private

Event id for next start or stop event.

Definition at line 163 of file onoff-application.h.

Referenced by CancelEvents(), ScheduleStartEvent(), and ScheduleStopEvent().

TypeId ns3::OnOffApplication::m_tid

private

Type of the socket used.

Definition at line 165 of file onoff-application.h.

Referenced by GetTypeId(), and StartApplication().

uint32_t ns3::OnOffApplication::m_totBytes

private

Total bytes sent so far.

Definition at line 162 of file onoff-application.h.

Referenced by ScheduleNextTx(), and SendPacket().

TracedCallback<Ptr<const Packet> > ns3::OnOffApplication::m_txTrace

private

Traced Callback: transmitted packets.

Definition at line 168 of file onoff-application.h.

Referenced by GetTypeId(), and SendPacket().

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

src/applications/model/onoff-application.h
src/applications/model/onoff-application.cc

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Config Paths

Attributes

Attributes defined in parent class ns3::Application

TraceSources

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation