TrafficShaper Class Reference

Traffic Shaper. More...

#include <trafficshaper.h>

Inheritance diagram for TrafficShaper:

List of all members.

Classes
struct	TrafficShaperPacket
Public Member Functions
	TrafficShaper ()
	TrafficShaper (Socket *socket)
	~TrafficShaper ()
void	init (Socket *socket)
void	setSocket (Socket *socket)
card64	getBandwidth () const
void	setBandwidth (const card64 bandwidth)
double	getBufferDelay () const
void	setBufferDelay (const double bufferDelay)
void	flush ()
bool	refreshBuffer (const card8 trafficClass, const bool doRemapping)
cardinal	getLastSeqNum ()
ssize_t	sendTo (const void *buffer, const size_t length, const cardinal seqNum, const cardinal flags, const InternetFlow &receiver, const card8 trafficClass=0)
ssize_t	send (const void *buffer, const size_t length, const cardinal seqNum, const cardinal flags=0, const card8 trafficClass=0)
ssize_t	write (const void *buffer, const size_t length, const cardinal seqNum)
Private Types
enum	TrafficShaperCommand { TSC_Write = 0, TSC_Send = 1, TSC_SendTo = 2 }
Private Member Functions
void	sendAll ()
ssize_t	addPacket (const void *data, const cardinal bytes, const cardinal seqNum, InternetFlow &destination, const cardinal flags, const cardinal command)
Private Attributes
std::deque< TrafficShaperPacket >	Queue
Socket *	SenderSocket
card64	SendTimeStamp
card64	Bandwidth
double	BufferDelay
integer	LastError
cardinal	LastSeqNum
Static Private Attributes
static TrafficShaperSingleton	Singleton
Friends
class	TrafficShaperSingleton

---

Detailed Description

Traffic Shaper.

This class is a traffic shaper.

Author:

Thomas Dreibholz

Version:

1.0

---

Member Enumeration Documentation

enum TrafficShaper::TrafficShaperCommand [private]

Enumerator:

TSC_Write
TSC_Send
TSC_SendTo

---

Constructor & Destructor Documentation

TrafficShaper::TrafficShaper

(

)

Constructor.

TrafficShaper::TrafficShaper

(

Socket *

socket

)

Constructor.

TrafficShaper::~TrafficShaper

(

)

Destructor.

---

Member Function Documentation

ssize_t TrafficShaper::addPacket	(	const void *	data,
		const cardinal	bytes,
		const cardinal	seqNum,
		InternetFlow &	destination,
		const cardinal	flags,
		const cardinal	command
	)		[private]

void TrafficShaper::flush

(

)

Flush buffer.

card64 TrafficShaper::getBandwidth

(

)

const [inline]

Get bandwidth for following packets.

Returns:

Bandwidth.

double TrafficShaper::getBufferDelay

(

)

const [inline]

Get maximum buffer delay for following packets.

Returns:

Maximum buffer delay in microseconds.

cardinal TrafficShaper::getLastSeqNum

(

)

[inline]

Get sequence number of last packet sent.

Returns:

Sequence number.

void TrafficShaper::init

(

Socket *

socket

)

Initialize.

Parameters:

socket

Socket.

bool TrafficShaper::refreshBuffer	(	const card8	trafficClass,
		const bool	doRemapping
	)

Adapt buffer's contents to changed bandwidth and delay settings.

Parameters:

trafficClass	Traffic class to remap packets to.
doRemapping	true, to do traffic class remapping; false otherwise.

Returns:

true, if buffer flush has been necessary; false otherwise.

ssize_t TrafficShaper::send	(	const void *	buffer,
		const size_t	length,
		const cardinal	seqNum,
		const cardinal	flags = 0,
		const card8	trafficClass = 0
	)

Wrapper for send(). send() will set the packet's traffic class, if trafficClass is not 0. In this case, the packet will be sent by sendto() to the destination address, the socket is connected to!

Parameters:

buffer	Buffer with data to send.
length	Length of data to send.
seqNum	Packet's sequence number (-1 for none).
flags	Flags for sendto().
trafficClass	Traffic class for packet.

Returns:

Bytes sent or error code < 0.

void TrafficShaper::sendAll

(

)

[private]

ssize_t TrafficShaper::sendTo	(	const void *	buffer,
		const size_t	length,
		const cardinal	seqNum,
		const cardinal	flags,
		const InternetFlow &	receiver,
		const card8	trafficClass = 0
	)

Wrapper for sendto(). sendto() will set the packet's traffic class, if trafficClass is not 0.

Parameters:

buffer	Buffer with data to send.
length	Length of data to send.
seqNum	Packet's sequence number (-1 for none).
flags	Flags for sendto().
receiver	Address of receiver.

Returns:

Bytes sent or error code < 0.

void TrafficShaper::setBandwidth

(

const card64

bandwidth

)

[inline]

Set bandwidth for following packets.

Parameters:

bandwidth

Bandwidth.

void TrafficShaper::setBufferDelay

(

const double

bufferDelay

)

[inline]

Set maximum buffer delay for following packets.

Parameters:

bufferDelay

Maximum buffer delay in microseconds.

void TrafficShaper::setSocket

(

Socket *

socket

)

[inline]

Set socket to send shaped traffic to.

Parameters:

socket

Socket.

ssize_t TrafficShaper::write	(	const void *	buffer,
		const size_t	length,
		const cardinal	seqNum
	)

Wrapper for write().

Parameters:

buffer	Buffer with data to write
length	Length of data to write
seqNum	Packet's sequence number (-1 for none).

Returns:

Bytes sent or error code < 0.

---

Friends And Related Function Documentation

friend class TrafficShaperSingleton [friend]

---

Member Data Documentation

card64 TrafficShaper::Bandwidth [private]

double TrafficShaper::BufferDelay [private]

integer TrafficShaper::LastError [private]

cardinal TrafficShaper::LastSeqNum [private]

std::deque<TrafficShaperPacket> TrafficShaper::Queue [private]

Socket* TrafficShaper::SenderSocket [private]

card64 TrafficShaper::SendTimeStamp [private]

TrafficShaperSingleton TrafficShaper::Singleton [static, private]

---

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

• trafficshaper.h
• trafficshaper.cc