A Discrete-Event Network Simulator
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ns3::UdpTraceClient Class Reference

A trace based streamer. More...

#include "udp-trace-client.h"

+ Inheritance diagram for ns3::UdpTraceClient:
+ Collaboration diagram for ns3::UdpTraceClient:

Classes

struct  TraceEntry
 Entry to send. More...
 

Public Member Functions

 UdpTraceClient ()
 
 UdpTraceClient (Ipv4Address ip, uint16_t port, char *traceFile)
 Creates a traceBasedStreamer application.
 
 ~UdpTraceClient () override
 
uint16_t GetMaxPacketSize ()
 Return the maximum packet size.
 
void SetMaxPacketSize (uint16_t maxPacketSize)
 Set the maximum packet size.
 
void SetRemote (Address addr)
 set the remote address
 
void SetRemote (Address ip, uint16_t port)
 set the remote address and port
 
void SetTraceFile (std::string filename)
 Set the trace file to be used by the application.
 
void SetTraceLoop (bool traceLoop)
 Set the trace loop flag.
 
- Public Member Functions inherited from ns3::Application
 Application ()
 
 ~Application () override
 
virtual int64_t AssignStreams (int64_t stream)
 Assign a fixed random variable stream number to the random variables used by this Application object.
 
Ptr< NodeGetNode () const
 
void SetNode (Ptr< Node > node)
 
void SetStartTime (Time start)
 Specify application start time.
 
void SetStopTime (Time stop)
 Specify application stop time.
 
- Public Member Functions inherited from ns3::Object
 Object ()
 Constructor.
 
 ~Object () override
 Destructor.
 
void AggregateObject (Ptr< Object > other)
 Aggregate two Objects together.
 
void Dispose ()
 Dispose of this Object.
 
AggregateIterator GetAggregateIterator () const
 Get an iterator to the Objects aggregated to this one.
 
TypeId GetInstanceTypeId () const override
 Get the most derived TypeId for this Object.
 
template<typename T >
Ptr< T > GetObject () const
 Get a pointer to the requested aggregated Object.
 
template<>
Ptr< ObjectGetObject () const
 Specialization of () for objects of type ns3::Object.
 
template<typename T >
Ptr< T > GetObject (TypeId tid) const
 Get a pointer to the requested aggregated Object by TypeId.
 
template<>
Ptr< ObjectGetObject (TypeId tid) const
 Specialization of (TypeId tid) for objects of type ns3::Object.
 
void Initialize ()
 Invoke DoInitialize on all Objects aggregated to this one.
 
bool IsInitialized () const
 Check if the object has been initialized.
 
void UnidirectionalAggregateObject (Ptr< Object > other)
 Aggregate an Object to another Object.
 
- Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
 SimpleRefCount ()
 Default constructor.
 
 SimpleRefCount (const SimpleRefCount &o)
 Copy constructor.
 
uint32_t GetReferenceCount () const
 Get the reference count of the object.
 
SimpleRefCountoperator= (const SimpleRefCount &o)
 Assignment operator.
 
void Ref () const
 Increment the reference count.
 
void Unref () const
 Decrement the reference count.
 
- Public Member Functions inherited from ns3::ObjectBase
virtual ~ObjectBase ()
 Virtual destructor.
 
void GetAttribute (std::string name, AttributeValue &value, bool permissive=false) const
 Get the value of an attribute, raising fatal errors if unsuccessful.
 
bool GetAttributeFailSafe (std::string name, AttributeValue &value) const
 Get the value of an attribute without raising errors.
 
void SetAttribute (std::string name, const AttributeValue &value)
 Set a single attribute, raising fatal errors if unsuccessful.
 
bool SetAttributeFailSafe (std::string name, const AttributeValue &value)
 Set a single attribute without raising errors.
 
bool TraceConnect (std::string name, std::string context, const CallbackBase &cb)
 Connect a TraceSource to a Callback with a context.
 
bool TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
 Connect a TraceSource to a Callback without a context.
 
bool TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
 Disconnect from a TraceSource a Callback previously connected with a context.
 
bool TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
 Disconnect from a TraceSource a Callback previously connected without a context.
 

Static Public Member Functions

static TypeId GetTypeId ()
 Get the type ID.
 
- Static Public Member Functions inherited from ns3::Application
static TypeId GetTypeId ()
 Get the type ID.
 
- Static Public Member Functions inherited from ns3::Object
static TypeId GetTypeId ()
 Register this type.
 
- Static Public Member Functions inherited from ns3::ObjectBase
static TypeId GetTypeId ()
 Get the type ID.
 

Private Member Functions

void LoadDefaultTrace ()
 Load the default trace.
 
void LoadTrace (std::string filename)
 Load a trace file.
 
void Send ()
 Send a packet.
 
void SendPacket (uint32_t size)
 Send a packet of a given size.
 
void StartApplication () override
 Application specific startup code.
 
void StopApplication () override
 Application specific shutdown code.
 

Private Attributes

uint32_t m_currentEntry
 Current entry index.
 
std::vector< TraceEntrym_entries
 Entries in the trace to send.
 
uint16_t m_maxPacketSize
 Maximum packet size to send (including the SeqTsHeader)
 
Address m_peerAddress
 Remote peer address.
 
uint16_t m_peerPort
 Remote peer port.
 
EventId m_sendEvent
 Event to send the next packet.
 
uint32_t m_sent
 Counter for sent packets.
 
Ptr< Socketm_socket
 Socket.
 
uint8_t m_tos
 The packets Type of Service.
 
bool m_traceLoop
 Loop through the trace file.
 

Static Private Attributes

static TraceEntry g_defaultEntries []
 Default trace to send.
 

Additional Inherited Members

- Public Types inherited from ns3::Application
typedef void(* DelayAddressCallback) (const Time &delay, const Address &from)
 Common callback signature for packet delay and address.
 
typedef void(* StateTransitionCallback) (const std::string &oldState, const std::string &newState)
 Common signature used by callbacks to application's state transition trace source.
 
- Protected Member Functions inherited from ns3::Application
void DoDispose () override
 Destructor implementation.
 
void DoInitialize () override
 Initialize() implementation.
 
- Protected Member Functions inherited from ns3::Object
 Object (const Object &o)
 Copy an Object.
 
virtual void NotifyNewAggregate ()
 Notify all Objects aggregated to this one of a new Object being aggregated.
 
- Protected Member Functions inherited from ns3::ObjectBase
void ConstructSelf (const AttributeConstructionList &attributes)
 Complete construction of ObjectBase; invoked by derived classes.
 
virtual void NotifyConstructionCompleted ()
 Notifier called once the ObjectBase is fully constructed.
 
- Protected Attributes inherited from ns3::Application
Ptr< Nodem_node
 The node that this application is installed on.
 
EventId m_startEvent
 The event that will fire at m_startTime to start the application.
 
Time m_startTime
 The simulation time that the application will start.
 
EventId m_stopEvent
 The event that will fire at m_stopTime to end the application.
 
Time m_stopTime
 The simulation time that the application will end.
 

Detailed Description

A trace based streamer.

Sends UDP packets based on a trace file of a MPEG4 stream. Trace files can be downloaded from: https://web.archive.org/web/20210113211420/http://trace.eas.asu.edu/mpeg4/index.html (the 2 first lines of the file should be removed) A valid trace file is a file with 4 columns:

  • -1- the first one represents the frame index
  • -2- the second one indicates the type of the frame: I, P or B
  • -3- the third one indicates the time on which the frame was generated by the encoder (integer, milliseconds)
  • -4- the fourth one indicates the frame size in byte

Additional trace files can be generated from MPEG4 files using the tool available in https://pypi.org/project/trace-extractor/

If no valid MPEG4 trace file is provided to the application the trace from g_defaultEntries array will be loaded.

Also note that:

  • -1- consecutive 'B' frames are sent together,
  • -2- any trace file is (by default) read again once finished (loop).

The latter behavior can be changed through the "TraceLoop" attribute.

Definition at line 52 of file udp-trace-client.h.

Constructor & Destructor Documentation

◆ UdpTraceClient() [1/2]

ns3::UdpTraceClient::UdpTraceClient ( )

Definition at line 97 of file udp-trace-client.cc.

References m_maxPacketSize, m_sendEvent, m_sent, m_socket, and NS_LOG_FUNCTION.

◆ UdpTraceClient() [2/2]

ns3::UdpTraceClient::UdpTraceClient ( Ipv4Address ip,
uint16_t port,
char * traceFile )

Creates a traceBasedStreamer application.

Parameters
ipthe destination ip address to which the stream will be sent
portthe destination udp port to which the stream will be sent
traceFilea path to an MPEG4 trace file formatted as follows: FrameNo Frametype Time[ms] Length [byte] FrameNo Frametype Time[ms] Length [byte] ...

Definition at line 106 of file udp-trace-client.cc.

References m_currentEntry, m_maxPacketSize, m_peerAddress, m_peerPort, m_sendEvent, m_sent, m_socket, NS_LOG_FUNCTION, port, and SetTraceFile().

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◆ ~UdpTraceClient()

ns3::UdpTraceClient::~UdpTraceClient ( )
override

Definition at line 122 of file udp-trace-client.cc.

References m_entries, and NS_LOG_FUNCTION.

Member Function Documentation

◆ GetMaxPacketSize()

uint16_t ns3::UdpTraceClient::GetMaxPacketSize ( )

Return the maximum packet size.

Returns
the maximum packet size

Definition at line 167 of file udp-trace-client.cc.

References m_maxPacketSize, and NS_LOG_FUNCTION.

◆ GetTypeId()

TypeId ns3::UdpTraceClient::GetTypeId ( )
static

Get the type ID.

Returns
the object TypeId

Definition at line 54 of file udp-trace-client.cc.

References m_maxPacketSize, m_peerAddress, m_peerPort, m_tos, ns3::MakeAddressAccessor(), ns3::MakeAddressChecker(), ns3::MakeBooleanAccessor(), ns3::MakeBooleanChecker(), ns3::MakeStringAccessor(), ns3::MakeStringChecker(), ns3::MakeUintegerAccessor(), ns3::MakeUintegerChecker(), ns3::TypeId::SetParent(), SetTraceFile(), and SetTraceLoop().

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◆ LoadDefaultTrace()

void ns3::UdpTraceClient::LoadDefaultTrace ( )
private

Load the default trace.

Definition at line 218 of file udp-trace-client.cc.

References ns3::UdpTraceClient::TraceEntry::frameType, g_defaultEntries, m_currentEntry, m_entries, NS_LOG_FUNCTION, prevTime, and ns3::UdpTraceClient::TraceEntry::timeToSend.

Referenced by LoadTrace(), and SetTraceFile().

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◆ LoadTrace()

void ns3::UdpTraceClient::LoadTrace ( std::string filename)
private

Load a trace file.

Parameters
filenamethe trace file path

Definition at line 174 of file udp-trace-client.cc.

References ns3::UdpTraceClient::TraceEntry::frameType, LoadDefaultTrace(), m_currentEntry, m_entries, NS_ASSERT_MSG, NS_LOG_FUNCTION, ns3::UdpTraceClient::TraceEntry::packetSize, prevTime, and ns3::UdpTraceClient::TraceEntry::timeToSend.

Referenced by SetTraceFile().

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◆ Send()

void ns3::UdpTraceClient::Send ( )
private

Send a packet.

Definition at line 348 of file udp-trace-client.cc.

References ns3::EventId::IsExpired(), m_currentEntry, m_entries, m_maxPacketSize, m_sendEvent, m_traceLoop, ns3::MilliSeconds(), NS_ASSERT, NS_LOG_FUNCTION, ns3::UdpTraceClient::TraceEntry::packetSize, ns3::Simulator::Schedule(), Send(), SendPacket(), and ns3::UdpTraceClient::TraceEntry::timeToSend.

Referenced by Send(), and StartApplication().

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◆ SendPacket()

void ns3::UdpTraceClient::SendPacket ( uint32_t size)
private

Send a packet of a given size.

Parameters
sizethe packet size

Definition at line 304 of file udp-trace-client.cc.

References ns3::Ipv4Address::ConvertFrom(), ns3::Ipv6Address::ConvertFrom(), ns3::Create(), ns3::Ipv4Address::IsMatchingType(), ns3::Ipv6Address::IsMatchingType(), m_peerAddress, m_sent, m_socket, NS_LOG_FUNCTION, NS_LOG_INFO, packetSize, ns3::Socket::Send(), and ns3::SeqTsHeader::SetSeq().

Referenced by Send().

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◆ SetMaxPacketSize()

void ns3::UdpTraceClient::SetMaxPacketSize ( uint16_t maxPacketSize)

Set the maximum packet size.

Parameters
maxPacketSizeThe maximum packet size

Definition at line 160 of file udp-trace-client.cc.

References m_maxPacketSize, and NS_LOG_FUNCTION.

◆ SetRemote() [1/2]

void ns3::UdpTraceClient::SetRemote ( Address addr)

set the remote address

Parameters
addrremote address

Definition at line 138 of file udp-trace-client.cc.

References m_entries, m_peerAddress, and NS_LOG_FUNCTION.

◆ SetRemote() [2/2]

void ns3::UdpTraceClient::SetRemote ( Address ip,
uint16_t port )

set the remote address and port

Parameters
ipremote IP address
portremote port

Definition at line 129 of file udp-trace-client.cc.

References m_entries, m_peerAddress, m_peerPort, NS_LOG_FUNCTION, and port.

◆ SetTraceFile()

void ns3::UdpTraceClient::SetTraceFile ( std::string filename)

Set the trace file to be used by the application.

Parameters
filenamea path to an MPEG4 trace file formatted as follows: Frame No Frametype Time[ms] Length [byte] Frame No Frametype Time[ms] Length [byte] ...

Definition at line 146 of file udp-trace-client.cc.

References LoadDefaultTrace(), LoadTrace(), and NS_LOG_FUNCTION.

Referenced by UdpTraceClient(), and GetTypeId().

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◆ SetTraceLoop()

void ns3::UdpTraceClient::SetTraceLoop ( bool traceLoop)

Set the trace loop flag.

Parameters
traceLooptrue if the trace should be re-used

Definition at line 384 of file udp-trace-client.cc.

References m_traceLoop.

Referenced by GetTypeId().

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◆ StartApplication()

void ns3::UdpTraceClient::StartApplication ( )
overrideprivatevirtual

◆ StopApplication()

void ns3::UdpTraceClient::StopApplication ( )
overrideprivatevirtual

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 297 of file udp-trace-client.cc.

References ns3::Simulator::Cancel(), m_sendEvent, and NS_LOG_FUNCTION.

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Member Data Documentation

◆ g_defaultEntries

UdpTraceClient::TraceEntry ns3::UdpTraceClient::g_defaultEntries
staticprivate
Initial value:
= {
{0, 534, 'I'},
{40, 1542, 'P'},
{120, 134, 'B'},
{80, 390, 'B'},
{240, 765, 'P'},
{160, 407, 'B'},
{200, 504, 'B'},
{360, 903, 'P'},
{280, 421, 'B'},
{320, 587, 'B'},
}

Default trace to send.

Definition at line 161 of file udp-trace-client.h.

Referenced by LoadDefaultTrace().

◆ m_currentEntry

uint32_t ns3::UdpTraceClient::m_currentEntry
private

Current entry index.

Definition at line 160 of file udp-trace-client.h.

Referenced by UdpTraceClient(), LoadDefaultTrace(), LoadTrace(), and Send().

◆ m_entries

std::vector<TraceEntry> ns3::UdpTraceClient::m_entries
private

Entries in the trace to send.

Definition at line 159 of file udp-trace-client.h.

Referenced by ~UdpTraceClient(), LoadDefaultTrace(), LoadTrace(), Send(), SetRemote(), and SetRemote().

◆ m_maxPacketSize

uint16_t ns3::UdpTraceClient::m_maxPacketSize
private

Maximum packet size to send (including the SeqTsHeader)

Definition at line 162 of file udp-trace-client.h.

Referenced by UdpTraceClient(), UdpTraceClient(), GetMaxPacketSize(), GetTypeId(), Send(), and SetMaxPacketSize().

◆ m_peerAddress

Address ns3::UdpTraceClient::m_peerAddress
private

Remote peer address.

Definition at line 154 of file udp-trace-client.h.

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

◆ m_peerPort

uint16_t ns3::UdpTraceClient::m_peerPort
private

Remote peer port.

Definition at line 155 of file udp-trace-client.h.

Referenced by UdpTraceClient(), GetTypeId(), SetRemote(), and StartApplication().

◆ m_sendEvent

EventId ns3::UdpTraceClient::m_sendEvent
private

Event to send the next packet.

Definition at line 157 of file udp-trace-client.h.

Referenced by UdpTraceClient(), UdpTraceClient(), Send(), StartApplication(), and StopApplication().

◆ m_sent

uint32_t ns3::UdpTraceClient::m_sent
private

Counter for sent packets.

Definition at line 152 of file udp-trace-client.h.

Referenced by UdpTraceClient(), UdpTraceClient(), and SendPacket().

◆ m_socket

Ptr<Socket> ns3::UdpTraceClient::m_socket
private

◆ m_tos

uint8_t ns3::UdpTraceClient::m_tos
private

The packets Type of Service.

Definition at line 156 of file udp-trace-client.h.

Referenced by GetTypeId(), and StartApplication().

◆ m_traceLoop

bool ns3::UdpTraceClient::m_traceLoop
private

Loop through the trace file.

Definition at line 163 of file udp-trace-client.h.

Referenced by Send(), and SetTraceLoop().


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