class for keeping the data sent by the application to the TCP socket, i.e. More...

#include <tcp-tx-buffer.h>

Inheritance diagram for ns3::TcpTxBuffer:

Collaboration diagram for ns3::TcpTxBuffer:

Public Member Functions
	TcpTxBuffer (uint32_t n=0)
	Constructor. More...

virtual	~TcpTxBuffer (void)

bool	Add (Ptr< Packet > p)
	Append a data packet to the end of the buffer. More...

uint32_t	Available (void) const
	Returns the available capacity in this Tx window. More...

Ptr< Packet >	CopyFromSequence (uint32_t numBytes, const SequenceNumber32 &seq)
	Copy data of size numBytes into a packet, data from the range [seq, seq+numBytes) More...

void	DiscardUpTo (const SequenceNumber32 &seq)
	Discard data up to but not including this sequence number. More...

SequenceNumber32	HeadSequence (void) const
	Returns the first byte's sequence number. More...

uint32_t	MaxBufferSize (void) const
	Returns the Tx window size. More...

void	SetHeadSequence (const SequenceNumber32 &seq)
	Set the m_firstByteSeq to seq. More...

void	SetMaxBufferSize (uint32_t n)
	Set the Tx window size. More...

uint32_t	Size (void) const
	Returns total number of bytes in this Tx buffer. More...

uint32_t	SizeFromSequence (const SequenceNumber32 &seq) const
	Returns the number of bytes from the buffer in the range [seq, tailSequence) More...

SequenceNumber32	TailSequence (void) const
	Returns the last byte's sequence number + 1. 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::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...

Private Types
typedef std::list< Ptr< Packet > >::iterator	BufIterator
	container for data stored in the buffer More...

Private Attributes
std::list< Ptr< Packet > >	m_data
	Corresponding data (may be null) More...

TracedValue< SequenceNumber32 >	m_firstByteSeq
	Sequence number of the first byte in data (SND.UNA) More...

uint32_t	m_maxBuffer
	Max number of data bytes in buffer (SND.WND) More...

uint32_t	m_size
	Number of data bytes. More...

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

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

virtual void	DoInitialize (void)
	This method is called only once by Object::Initialize. More...

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...

Detailed Description

class for keeping the data sent by the application to the TCP socket, i.e.

the sending buffer.

Definition at line 40 of file tcp-tx-buffer.h.

Member Typedef Documentation

typedef std::list<Ptr<Packet> >::iterator ns3::TcpTxBuffer::BufIterator

private

container for data stored in the buffer

Definition at line 132 of file tcp-tx-buffer.h.

Constructor & Destructor Documentation

ns3::TcpTxBuffer::TcpTxBuffer ( uint32_t n = 0 )

Constructor.

Parameters

n	initial Sequence number to be transmitted

Definition at line 55 of file tcp-tx-buffer.cc.

ns3::TcpTxBuffer::~TcpTxBuffer ( void )

virtual

Definition at line 60 of file tcp-tx-buffer.cc.

Member Function Documentation

bool ns3::TcpTxBuffer::Add ( Ptr< Packet > p )

Append a data packet to the end of the buffer.

Parameters

p	The packet to be appended to the Tx buffer

Returns: Boolean to indicate success

Definition at line 101 of file tcp-tx-buffer.cc.

References Available(), ns3::Packet::GetSize(), m_data, m_firstByteSeq, m_size, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

Referenced by ns3::TcpSocketBase::Send().

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uint32_t ns3::TcpTxBuffer::Available ( void ) const

Returns the available capacity in this Tx window.

Returns: available capacity in this Tx window

Definition at line 95 of file tcp-tx-buffer.cc.

References m_maxBuffer, and m_size.

Referenced by Add(), and ns3::TcpSocketBase::GetTxAvailable().

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Ptr< Packet > ns3::TcpTxBuffer::CopyFromSequence	(	uint32_t	numBytes,
		const SequenceNumber32 &	seq
	)

Copy data of size numBytes into a packet, data from the range [seq, seq+numBytes)

Parameters

numBytes	number of bytes to copy
seq	start sequence number to extract

Returns: a packet

Definition at line 133 of file tcp-tx-buffer.cc.

References ns3::Packet::AddAtEnd(), ns3::Packet::CreateFragment(), ns3::TracedValue< T >::Get(), ns3::Packet::GetSize(), m_data, m_firstByteSeq, NS_ASSERT, NS_LOG_FUNCTION, NS_LOG_LOGIC, s, and SizeFromSequence().

Referenced by ns3::TcpSocketBase::PersistTimeout(), and ns3::TcpSocketBase::SendDataPacket().

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void ns3::TcpTxBuffer::DiscardUpTo ( const SequenceNumber32 & seq )

Discard data up to but not including this sequence number.

Parameters

seq	The sequence number of the head byte

Definition at line 208 of file tcp-tx-buffer.cc.

References ns3::TracedValue< T >::Get(), m_data, m_firstByteSeq, m_maxBuffer, m_size, NS_ASSERT, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

Referenced by ns3::TcpSocketBase::NewAck().

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TypeId ns3::TcpTxBuffer::GetTypeId ( void )

static

Get the type ID.

Returns: the object TypeId

Definition at line 36 of file tcp-tx-buffer.cc.

References m_firstByteSeq, ns3::MakeTraceSourceAccessor(), and ns3::TypeId::SetParent().

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SequenceNumber32 ns3::TcpTxBuffer::HeadSequence ( void ) const

Returns the first byte's sequence number.

Returns: the first byte's sequence number

Definition at line 65 of file tcp-tx-buffer.cc.

References m_firstByteSeq.

Referenced by ns3::TcpSocketBase::BytesInFlight(), ns3::TcpSocketBase::DoRetransmit(), ns3::TcpTahoe::DupAck(), ns3::TcpNewReno::NewAck(), ns3::TcpSocketBase::NewAck(), ns3::TcpSocketBase::ReceivedAck(), ns3::TcpNewReno::Retransmit(), ns3::TcpReno::Retransmit(), ns3::TcpTahoe::Retransmit(), ns3::TcpWestwood::Retransmit(), ns3::TcpSocketBase::Retransmit(), ns3::TcpSocketBase::ReTxTimeout(), ns3::TcpSocketBase::SendPendingData(), and ns3::TcpSocketBase::UnAckDataCount().

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uint32_t ns3::TcpTxBuffer::MaxBufferSize ( void ) const

Returns the Tx window size.

Returns: the Tx window size (in bytes)

Definition at line 83 of file tcp-tx-buffer.cc.

References m_maxBuffer.

Referenced by ns3::TcpSocketBase::GetSndBufSize().

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void ns3::TcpTxBuffer::SetHeadSequence ( const SequenceNumber32 & seq )

Set the m_firstByteSeq to seq.

Supposed to be called only when the connection is just set up and we did not send any data out yet.

Parameters

seq	The sequence number of the head byte

Definition at line 201 of file tcp-tx-buffer.cc.

References m_firstByteSeq, and NS_LOG_FUNCTION.

Referenced by ns3::TcpSocketBase::ProcessSynRcvd(), and ns3::TcpSocketBase::ProcessSynSent().

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void ns3::TcpTxBuffer::SetMaxBufferSize ( uint32_t n )

Set the Tx window size.

Parameters

n	Tx window size (in bytes)

Definition at line 89 of file tcp-tx-buffer.cc.

References m_maxBuffer.

Referenced by ns3::TcpSocketBase::SetSndBufSize().

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uint32_t ns3::TcpTxBuffer::Size ( void ) const

Returns total number of bytes in this Tx buffer.

Returns: total number of bytes in this Tx buffer

Definition at line 77 of file tcp-tx-buffer.cc.

References m_size.

Referenced by ns3::TcpSocketBase::DoRetransmit(), ns3::TcpSocketBase::NewAck(), ns3::TcpSocketBase::ProcessWait(), ns3::TcpSocketBase::Send(), ns3::TcpSocketBase::SendPendingData(), and ns3::TcpSocketBase::ShutdownSend().

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uint32_t ns3::TcpTxBuffer::SizeFromSequence ( const SequenceNumber32 & seq ) const

Returns the number of bytes from the buffer in the range [seq, tailSequence)

Parameters

seq	initial sequence number

Returns: the number of bytes from the buffer in the range

Definition at line 121 of file tcp-tx-buffer.cc.

References m_firstByteSeq, m_size, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

Referenced by ns3::TcpSocketBase::Close(), CopyFromSequence(), ns3::TcpNewReno::DupAck(), ns3::TcpSocketBase::SendDataPacket(), and ns3::TcpSocketBase::SendPendingData().

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SequenceNumber32 ns3::TcpTxBuffer::TailSequence ( void ) const

Returns the last byte's sequence number + 1.

Returns: the last byte's sequence number + 1

Definition at line 71 of file tcp-tx-buffer.cc.

References m_firstByteSeq, and m_size.

Member Data Documentation

std::list<Ptr<Packet> > ns3::TcpTxBuffer::m_data

private

Corresponding data (may be null)

Definition at line 137 of file tcp-tx-buffer.h.

Referenced by Add(), CopyFromSequence(), and DiscardUpTo().

TracedValue<SequenceNumber32> ns3::TcpTxBuffer::m_firstByteSeq

private

Sequence number of the first byte in data (SND.UNA)

Definition at line 134 of file tcp-tx-buffer.h.

Referenced by Add(), CopyFromSequence(), DiscardUpTo(), GetTypeId(), HeadSequence(), SetHeadSequence(), SizeFromSequence(), and TailSequence().

uint32_t ns3::TcpTxBuffer::m_maxBuffer

private

Max number of data bytes in buffer (SND.WND)

Definition at line 136 of file tcp-tx-buffer.h.

Referenced by Available(), DiscardUpTo(), MaxBufferSize(), and SetMaxBufferSize().

uint32_t ns3::TcpTxBuffer::m_size

private

Number of data bytes.

Definition at line 135 of file tcp-tx-buffer.h.

Referenced by Add(), Available(), DiscardUpTo(), Size(), SizeFromSequence(), and TailSequence().

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

src/internet/model/tcp-tx-buffer.h
src/internet/model/tcp-tx-buffer.cc

Public Member Functions

Static Public Member Functions

Private Types

Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation