class for managing I/O between applications and TCP More...

#include <pending-data.h>

Collaboration diagram for ns3::PendingData:

Public Member Functions
	PendingData ()

	PendingData (uint32_t s, uint8_t *d=NULL, uint32_t msg=0, uint32_t resp=0)
	Constructor. More...

	PendingData (const std::string &s)
	Constructor from string. More...

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

virtual	~PendingData ()

virtual void	Add (uint32_t s, const uint8_t *d=0)
	Add some data to end. More...

virtual void	Add (Ptr< Packet > p)
	Add some data to end. More...

virtual void	Clear ()
	Remove all associated data. More...

PendingData *	Copy () const
	Create a copy of self. More...

virtual Ptr< Packet >	CopyFromOffset (uint32_t s, uint32_t o)
	Copy data starting from a give offset. More...

virtual Ptr< Packet >	CopyFromSeq (uint32_t s, const SequenceNumber32 &f, const SequenceNumber32 &o)
	Copy data starting from a give offset. More...

PendingData *	CopyS (uint32_t s)
	Create a copy of self with new size. More...

PendingData *	CopySD (uint32_t s, uint8_t *d)
	Create a copy of self with new size, new data. More...

virtual uint32_t	OffsetFromSeq (const SequenceNumber32 &seqFront, const SequenceNumber32 &seqOffset)
	Subtracts seqFront from seqOffset after enforcing seqFront is less than seqOffset. More...

virtual uint32_t	RemoveToSeq (const SequenceNumber32 &seqFront, const SequenceNumber32 &seqOffset)
	Permits object to clear any pending data between seqFront and seqOffset - 1). More...

uint32_t	Size () const
	Returns the size of the pending data. More...

virtual uint32_t	SizeFromOffset (uint32_t offset)

virtual uint32_t	SizeFromSeq (const SequenceNumber32 &seqFront, const SequenceNumber32 &seqOffset)
	This method returns the number of bytes in the PendingData buffer beyond the sequence number specified by seqOffset. More...

Public Attributes
std::vector< Ptr< Packet > >	data
	Corresponding data (may be null) More...

uint32_t	msgSize
	Total size of message. More...

uint32_t	responseSize
	Size of response requested. More...

uint32_t	size
	Number of data bytes. More...

Detailed Description

class for managing I/O between applications and TCP

Definition at line 41 of file pending-data.h.

Constructor & Destructor Documentation

ns3::PendingData::PendingData ( )

Definition at line 42 of file pending-data.cc.

References NS_LOG_FUNCTION.

Referenced by Copy(), CopyS(), and CopySD().

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ns3::PendingData::PendingData	(	uint32_t	s,
		uint8_t *	d = `NULL`,
		uint32_t	msg = `0`,
		uint32_t	resp = `0`
	)

Constructor.

Parameters

s	size
d	data
msg	message size
resp	response size

Definition at line 48 of file pending-data.cc.

References data, NS_LOG_FUNCTION, and size.

ns3::PendingData::PendingData ( const std::string & s )

Constructor from string.

Parameters

s string

Definition at line 58 of file pending-data.cc.

References data, NS_LOG_FUNCTION, and size.

ns3::PendingData::PendingData ( const PendingData & o )

Copy constructor.

Parameters

o	object to copy

Definition at line 66 of file pending-data.cc.

References NS_LOG_FUNCTION, and Size().

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ns3::PendingData::~PendingData ( )

virtual

Definition at line 73 of file pending-data.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

void ns3::PendingData::Add	(	uint32_t	s,
		const uint8_t *	d = `0`
	)

virtual

Add some data to end.

Parameters

s	the data size.
d	the data to store.

Definition at line 103 of file pending-data.cc.

References data, NS_LOG_FUNCTION, s, and size.

void ns3::PendingData::Add ( Ptr< Packet > p )

virtual

Add some data to end.

Parameters

p	packet containing the data.

Definition at line 110 of file pending-data.cc.

References data, ns3::Packet::GetSize(), NS_LOG_FUNCTION, and size.

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void ns3::PendingData::Clear ( void )

virtual

Remove all associated data.

Definition at line 96 of file pending-data.cc.

References data, NS_LOG_FUNCTION, and size.

Referenced by RemoveToSeq().

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PendingData * ns3::PendingData::Copy ( void ) const

Create a copy of self.

Returns: copy of pending data

Definition at line 78 of file pending-data.cc.

References NS_LOG_FUNCTION, and PendingData().

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Ptr< Packet > ns3::PendingData::CopyFromOffset	(	uint32_t	s,
		uint32_t	o
	)

virtual

Copy data starting from a give offset.

Parameters

s	size of data to copy
o	offset

Returns: a packet containing the requested data

Definition at line 142 of file pending-data.cc.

References ns3::Packet::AddAtEnd(), ns3::Packet::CreateFragment(), data, ns3::Packet::GetSize(), NS_ASSERT, NS_LOG_FUNCTION, and SizeFromOffset().

Referenced by CopyFromSeq().

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Ptr< Packet > ns3::PendingData::CopyFromSeq	(	uint32_t	s,
		const SequenceNumber32 &	f,
		const SequenceNumber32 &	o
	)

virtual

Copy data starting from a give offset.

Parameters

s	size of data to copy
f	Front sequence
o	Offset sequence

See also: PendingData::OffsetFromSeq()

Returns: a packet containing the requested data

Definition at line 213 of file pending-data.cc.

References CopyFromOffset(), NS_LOG_FUNCTION, and OffsetFromSeq().

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PendingData * ns3::PendingData::CopyS ( uint32_t s )

Create a copy of self with new size.

Assumes no associated data

Parameters

s new size

Returns: copy of pending data

Definition at line 84 of file pending-data.cc.

References msgSize, NS_LOG_FUNCTION, PendingData(), and responseSize.

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PendingData * ns3::PendingData::CopySD	(	uint32_t	s,
		uint8_t *	d
	)

Create a copy of self with new size, new data.

Assumes no associated data

Parameters

s	new size
d	new data

Returns: copy of pending data

Definition at line 90 of file pending-data.cc.

References msgSize, NS_LOG_FUNCTION, PendingData(), and responseSize.

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uint32_t ns3::PendingData::OffsetFromSeq	(	const SequenceNumber32 &	seqFront,
		const SequenceNumber32 &	seqOffset
	)

virtual

Subtracts seqFront from seqOffset after enforcing seqFront is less than seqOffset.

Parameters

seqFront	sequence number to be subtracted from seqOffset
seqOffset	higher sequence number

Returns: seqOffset-seqFront

Definition at line 132 of file pending-data.cc.

References NS_LOG_FUNCTION.

Referenced by CopyFromSeq(), RemoveToSeq(), and SizeFromSeq().

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uint32_t ns3::PendingData::RemoveToSeq	(	const SequenceNumber32 &	seqFront,
		const SequenceNumber32 &	seqOffset
	)

virtual

Permits object to clear any pending data between seqFront and seqOffset - 1).

Callers should check the return value to determine whether any data was removed from the front.

Parameters

seqFront	sequence number to start to try to remove from
seqOffset	first sequence number in buffer that should be retained

Returns: number of bytes from the front that were removed from the buffer

Definition at line 220 of file pending-data.cc.

References Clear(), current, data, NS_ASSERT_MSG, NS_LOG_FUNCTION, OffsetFromSeq(), and size.

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

inline

Returns the size of the pending data.

Returns: size of pending data

Definition at line 69 of file pending-data.h.

References size.

Referenced by PendingData().

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uint32_t ns3::PendingData::SizeFromOffset ( uint32_t offset )

virtual

Returns: number of bytes in the data buffer beyond the offset specified

Parameters

offset offset (from zero)

Todo:: should this return zero, or error out?

Definition at line 124 of file pending-data.cc.

References NS_LOG_FUNCTION, and size.

Referenced by CopyFromOffset(), and SizeFromSeq().

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uint32_t ns3::PendingData::SizeFromSeq	(	const SequenceNumber32 &	seqFront,
		const SequenceNumber32 &	seqOffset
	)

virtual

This method returns the number of bytes in the PendingData buffer beyond the sequence number specified by seqOffset.

The variables seqFront and seqOffset correspond to a sequence number space in use by the user. What is significant in this method is the difference between them; i.e. the quantity (seqOffset - seqFront). This difference is subtracted from Size(), yielding the number of bytes beyond seqOffset, from the user perspective, in the PendingData buffer.

If the first number specified is not a sequence number that corresponds to the first data byte in the PendingData buffer, the computation returned will be in error.

Returns: number of bytes

Parameters

seqFront	sequence number of assumed first byte in the PendingData
seqOffset	sequence number of offset

Definition at line 117 of file pending-data.cc.

References NS_LOG_FUNCTION, OffsetFromSeq(), and SizeFromOffset().

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Member Data Documentation

std::vector<Ptr<Packet> > ns3::PendingData::data

Corresponding data (may be null)

Definition at line 176 of file pending-data.h.

Referenced by Add(), Clear(), CopyFromOffset(), PendingData(), and RemoveToSeq().

uint32_t ns3::PendingData::msgSize

Total size of message.

Definition at line 178 of file pending-data.h.

Referenced by CopyS(), and CopySD().

uint32_t ns3::PendingData::responseSize

Size of response requested.

Definition at line 179 of file pending-data.h.

Referenced by CopyS(), and CopySD().

uint32_t ns3::PendingData::size

Number of data bytes.

Definition at line 175 of file pending-data.h.

Referenced by Add(), Clear(), PendingData(), RemoveToSeq(), Size(), and SizeFromOffset().

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

src/internet/model/pending-data.h
src/internet/model/pending-data.cc

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation