Header for the Transmission Control Protocol. More...

#include "tcp-header.h"

Inheritance diagram for ns3::TcpHeader:

Collaboration diagram for ns3::TcpHeader:

Public Types
enum	Flags_t { NONE = 0 , FIN = 1 , SYN = 2 , RST = 4 , PSH = 8 , ACK = 16 , URG = 32 , ECE = 64 , CWR = 128 }
	TCP flag field values. More...

typedef std::list< Ptr< const TcpOption > >	TcpOptionList
	List of TcpOption. More...

Public Member Functions
	TcpHeader ()

virtual	~TcpHeader ()

bool	AppendOption (Ptr< const TcpOption > option)
	Append an option to the TCP header. More...

virtual uint32_t	Deserialize (Buffer::Iterator start)

void	EnableChecksums (void)
	Enable checksum calculation for TCP. More...

SequenceNumber32	GetAckNumber () const
	Get the ACK number. More...

uint16_t	GetDestinationPort () const
	Get the destination port. More...

uint8_t	GetFlags () const
	Get the flags. More...

virtual TypeId	GetInstanceTypeId (void) const
	Get the most derived TypeId for this Object. More...

uint8_t	GetLength () const
	Get the length in words. More...

uint8_t	GetMaxOptionLength () const
	Get maximum option length. More...

Ptr< const TcpOption >	GetOption (uint8_t kind) const
	Get the option specified. More...

uint8_t	GetOptionLength () const
	Get the total length of appended options. More...

const TcpOptionList &	GetOptionList (void) const
	Get the list of option in this header. More...

SequenceNumber32	GetSequenceNumber () const
	Get the sequence number. More...

virtual uint32_t	GetSerializedSize (void) const

uint16_t	GetSourcePort () const
	Get the source port. More...

uint16_t	GetUrgentPointer () const
	Get the urgent pointer. More...

uint16_t	GetWindowSize () const
	Get the window size. More...

bool	HasOption (uint8_t kind) const
	Check if the header has the option specified. More...

void	InitializeChecksum (const Address &source, const Address &destination, uint8_t protocol)
	Initialize the TCP checksum. More...

void	InitializeChecksum (const Ipv4Address &source, const Ipv4Address &destination, uint8_t protocol)
	Initialize the TCP checksum. More...

void	InitializeChecksum (const Ipv6Address &source, const Ipv6Address &destination, uint8_t protocol)
	Initialize the TCP checksum. More...

bool	IsChecksumOk (void) const
	Is the TCP checksum correct ? More...

virtual void	Print (std::ostream &os) const

virtual void	Serialize (Buffer::Iterator start) const

void	SetAckNumber (SequenceNumber32 ackNumber)
	Set the ACK number. More...

void	SetDestinationPort (uint16_t port)
	Set the destination port. More...

void	SetFlags (uint8_t flags)
	Set flags of the header. More...

void	SetSequenceNumber (SequenceNumber32 sequenceNumber)
	Set the sequence Number. More...

void	SetSourcePort (uint16_t port)
	Set the source port. More...

void	SetUrgentPointer (uint16_t urgentPointer)
	Set the urgent pointer. More...

void	SetWindowSize (uint16_t windowSize)
	Set the window size. More...

Public Member Functions inherited from ns3::Header
virtual	~Header ()

virtual uint32_t	Deserialize (Buffer::Iterator start)=0
	Deserialize the object from a buffer iterator. More...

virtual uint32_t	Deserialize (Buffer::Iterator start, Buffer::Iterator end)
	Deserialize the object from a buffer iterator. More...

Public Member Functions inherited from ns3::Chunk
virtual uint32_t	Deserialize (Buffer::Iterator start, Buffer::Iterator end)
	Deserialize the object from a buffer iterator. More...

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

void	GetAttribute (std::string name, AttributeValue &value) const
	Get the value of an attribute, raising fatal errors if unsuccessful. More...

bool	GetAttributeFailSafe (std::string name, AttributeValue &value) const
	Get the value of an attribute without raising erros. More...

void	SetAttribute (std::string name, const AttributeValue &value)
	Set a single attribute, raising fatal errors if unsuccessful. More...

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)
	Set a single attribute without raising errors. More...

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)
	Connect a TraceSource to a Callback with a context. More...

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
	Connect a TraceSource to a Callback without a context. More...

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected with a context. More...

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected without a context. More...

Static Public Member Functions
static std::string	FlagsToString (uint8_t flags, const std::string &delimiter="\|")
	Converts an integer into a human readable list of Tcp flags. More...

static TypeId	GetTypeId (void)
	Get the type ID. More...

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

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

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

Private Member Functions
uint16_t	CalculateHeaderChecksum (uint16_t size) const
	Calculate the header checksum. More...

uint8_t	CalculateHeaderLength () const
	Calculates the header length (in words) More...

Private Attributes
SequenceNumber32	m_ackNumber
	ACK number. More...

bool	m_calcChecksum
	Flag to calculate checksum. More...

Address	m_destination
	Destination IP address. More...

uint16_t	m_destinationPort
	Destination port. More...

uint8_t	m_flags
	Flags (really a uint6_t) More...

bool	m_goodChecksum
	Flag to indicate that checksum is correct. More...

uint8_t	m_length
	Length (really a uint4_t) in words. More...

TcpOptionList	m_options
	TcpOption present in the header. More...

uint8_t	m_optionsLen
	Tcp options length. More...

uint8_t	m_protocol
	Protocol number. More...

SequenceNumber32	m_sequenceNumber
	Sequence number. More...

Address	m_source
	Source IP address. More...

uint16_t	m_sourcePort
	Source port. More...

uint16_t	m_urgentPointer
	Urgent pointer. More...

uint16_t	m_windowSize
	Window size. More...

Static Private Attributes
static const uint8_t	m_maxOptionsLen = 40
	Maximum options length. More...

Friends
std::ostream &	operator<< (std::ostream &os, TcpHeader const &tc)
	Print a TCP header into an output stream. More...

bool	operator== (const TcpHeader &lhs, const TcpHeader &rhs)
	Comparison operator. More...

Additional Inherited Members
Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)
	Complete construction of ObjectBase; invoked by derived classes. More...

virtual void	NotifyConstructionCompleted (void)
	Notifier called once the ObjectBase is fully constructed. More...

Related Functions inherited from ns3::ObjectBase
static TypeId	GetObjectIid (void)
	Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly. More...

Detailed Description

Header for the Transmission Control Protocol.

Introspection did not find any typical Config paths.

This class has fields corresponding to those in a network TCP header (port numbers, sequence and acknowledgement numbers, flags, etc) as well as methods for serialization to and deserialization from a byte buffer.

No Attributes are defined for this type.
No TraceSources are defined for this type.
Size of this type is 112 bytes (on a 64-bit architecture).

Definition at line 44 of file tcp-header.h.

Member Typedef Documentation

◆ TcpOptionList

typedef std::list< Ptr<const TcpOption> > ns3::TcpHeader::TcpOptionList

List of TcpOption.

Definition at line 50 of file tcp-header.h.

Member Enumeration Documentation

◆ Flags_t

enum ns3::TcpHeader::Flags_t

TCP flag field values.

Enumerator
NONE	No flags.
FIN	FIN.
SYN	SYN.
RST	Reset.
PSH	Push.
ACK	Ack.
URG	Urgent.
ECE	ECE.
CWR	CWR.

Definition at line 279 of file tcp-header.h.

Constructor & Destructor Documentation

◆ TcpHeader()

ns3::TcpHeader::TcpHeader ( )

Definition at line 35 of file tcp-header.cc.

◆ ~TcpHeader()

ns3::TcpHeader::~TcpHeader ( )

virtual

Definition at line 50 of file tcp-header.cc.

Member Function Documentation

◆ AppendOption()

bool ns3::TcpHeader::AppendOption ( Ptr< const TcpOption > option )

Append an option to the TCP header.

Parameters

option The option to append

Returns: true if option has been appended, false otherwise

Definition at line 463 of file tcp-header.cc.

References ns3::TcpOption::END, ns3::TcpOption::GetKind(), ns3::TcpOption::GetSerializedSize(), ns3::TcpOption::IsKindKnown(), m_length, m_maxOptionsLen, m_options, m_optionsLen, and NS_LOG_WARN.

Referenced by ns3::TcpSocketBase::AddOptionSack(), ns3::TcpSocketBase::AddOptionSackPermitted(), ns3::TcpSocketBase::AddOptionTimestamp(), ns3::TcpSocketBase::AddOptionWScale(), TcpHeaderWithRFC793OptionTestCase::CheckCorrectDeserialize(), TcpHeaderWithRFC793OptionTestCase::CheckNoPadding(), and TcpHeaderWithRFC793OptionTestCase::OneOptionAtTime().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ CalculateHeaderChecksum()

uint16_t ns3::TcpHeader::CalculateHeaderChecksum ( uint16_t size ) const

private

Calculate the header checksum.

Parameters

size	packet size

Returns: the checksum

Definition at line 221 of file tcp-header.cc.

References ns3::Buffer::AddAtStart(), ns3::Buffer::Begin(), ns3::Buffer::Iterator::CalculateIpChecksum(), ns3::Ipv4Address::IsMatchingType(), m_destination, m_protocol, m_source, ns3::Address::MAX_SIZE, ns3::WriteTo(), ns3::Buffer::Iterator::WriteU16(), and ns3::Buffer::Iterator::WriteU8().

Referenced by Deserialize(), and Serialize().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ CalculateHeaderLength()

uint8_t ns3::TcpHeader::CalculateHeaderLength ( ) const

private

Calculates the header length (in words)

Given the standard size of the header, the method checks for options and calculates the real length (in words).

Returns: header length in 4-byte words

Definition at line 445 of file tcp-header.cc.

References m_options.

Referenced by Deserialize(), and GetSerializedSize().

Here is the caller graph for this function:

◆ Deserialize()

uint32_t ns3::TcpHeader::Deserialize ( Buffer::Iterator start )

virtual

Parameters

start an iterator which points to where the header should read from.

Returns: the number of bytes read.

This method is used by Packet::RemoveHeader to re-create a header from the byte buffer of a packet. The data read is expected to match bit-for-bit the representation of this header in real networks.

Note that data is not actually removed from the buffer to which the iterator points. Both Packet::RemoveHeader() and Packet::PeekHeader() call Deserialize(), but only the RemoveHeader() has additional statements to remove the header bytes from the underlying buffer and associated metadata.

Implements ns3::Header.

Definition at line 360 of file tcp-header.cc.

References CalculateHeaderChecksum(), CalculateHeaderLength(), ns3::Buffer::Iterator::CalculateIpChecksum(), ns3::TcpOption::CreateOption(), ns3::TcpOption::END, GetSerializedSize(), ns3::TcpOption::IsKindKnown(), m_ackNumber, m_calcChecksum, m_destinationPort, m_flags, m_goodChecksum, m_length, m_maxOptionsLen, m_options, m_optionsLen, m_sequenceNumber, m_sourcePort, m_urgentPointer, m_windowSize, ns3::Buffer::Iterator::Next(), NS_LOG_ERROR, NS_LOG_WARN, ns3::Buffer::Iterator::PeekU8(), ns3::Buffer::Iterator::ReadNtohU16(), ns3::Buffer::Iterator::ReadNtohU32(), visualizer.core::start(), and ns3::TcpOption::UNKNOWN.

Referenced by TcpHeaderWithRFC793OptionTestCase::CheckCorrectDeserialize(), TcpHeaderGetSetTestCase::DoRun(), and TcpHeaderWithRFC793OptionTestCase::OneOptionAtTime().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ EnableChecksums()

void ns3::TcpHeader::EnableChecksums ( void )

Enable checksum calculation for TCP.

Todo:: currently has no effect

Definition at line 83 of file tcp-header.cc.

References m_calcChecksum.

Referenced by ns3::TcpL4Protocol::SendPacketV4(), and ns3::TcpL4Protocol::SendPacketV6().

Here is the caller graph for this function:

◆ FlagsToString()

std::string ns3::TcpHeader::FlagsToString	(	uint8_t	flags,
		const std::string &	delimiter = `"\|"`
	)

static

Converts an integer into a human readable list of Tcp flags.

Parameters

flags	Bitfield of TCP flags to convert to a readable string
delimiter	String to insert between flags

FIN=0x1, SYN=0x2, RST=0x4, PSH=0x8, ACK=0x10, URG=0x20, ECE=0x40, CWR=0x80 TcpHeader::FlagsToString (0x1) should return the following string; "FIN"

TcpHeader::FlagsToString (0xff) should return the following string; "FIN|SYN|RST|PSH|ACK|URG|ECE|CWR";

Returns: the generated string

Definition at line 55 of file tcp-header.cc.

Referenced by Print(), ns3::TcpSocketBase::ProcessClosing(), ns3::TcpSocketBase::ProcessEstablished(), ns3::TcpSocketBase::ProcessLastAck(), ns3::TcpSocketBase::ProcessSynRcvd(), ns3::TcpSocketBase::ProcessSynSent(), ns3::TcpSocketBase::ProcessWait(), ns3::TcpL4Protocol::SendPacketV4(), and ns3::TcpL4Protocol::SendPacketV6().

Here is the caller graph for this function:

◆ GetAckNumber()

SequenceNumber32 ns3::TcpHeader::GetAckNumber ( ) const

Get the ACK number.

Returns: the ACK number for this TcpHeader

Definition at line 149 of file tcp-header.cc.

References m_ackNumber.

Here is the caller graph for this function:

◆ GetDestinationPort()

uint16_t ns3::TcpHeader::GetDestinationPort ( ) const

Get the destination port.

Returns: the destination port for this TcpHeader

Definition at line 137 of file tcp-header.cc.

References m_destinationPort.

Referenced by ns3::IpcsClassifier::Classify(), ns3::EpcTftClassifier::Classify(), ns3::TcpSocketBase::DoForwardUp(), TcpHeaderGetSetTestCase::DoRun(), ns3::Ipv4QueueDiscItem::Hash(), ns3::Ipv6QueueDiscItem::Hash(), and ns3::TcpL4Protocol::NoEndPointsFound().

Here is the caller graph for this function:

◆ GetFlags()

uint8_t ns3::TcpHeader::GetFlags ( ) const

Get the flags.

Returns: the flags for this TcpHeader

Definition at line 173 of file tcp-header.cc.

References m_flags.

Here is the caller graph for this function:

◆ GetInstanceTypeId()

TypeId ns3::TcpHeader::GetInstanceTypeId ( void ) const

virtual

Get the most derived TypeId for this Object.

This method is typically implemented by ns3::Object::GetInstanceTypeId but some classes which derive from ns3::ObjectBase directly have to implement it themselves.

Returns: The TypeId associated to the most-derived type of this instance.

Implements ns3::ObjectBase.

Definition at line 281 of file tcp-header.cc.

References GetTypeId().

Here is the call graph for this function:

◆ GetLength()

uint8_t ns3::TcpHeader::GetLength ( void ) const

Get the length in words.

A word is 4 bytes; without Tcp Options, header is 5 words (20 bytes). With options, it can reach up to 15 words (60 bytes).

Returns: the length of this TcpHeader

Definition at line 155 of file tcp-header.cc.

References m_length.

Referenced by TcpHeaderWithRFC793OptionTestCase::CheckNoPadding(), TcpHeaderGetSetTestCase::DoRun(), TcpHeaderWithRFC793OptionTestCase::OneOptionAtTime(), and Serialize().

Here is the caller graph for this function:

◆ GetMaxOptionLength()

uint8_t ns3::TcpHeader::GetMaxOptionLength ( ) const

Get maximum option length.

Returns: the maximum option length

Definition at line 167 of file tcp-header.cc.

References m_maxOptionsLen.

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

Here is the caller graph for this function:

◆ GetOption()

Ptr< const TcpOption > ns3::TcpHeader::GetOption ( uint8_t kind ) const

Get the option specified.

Parameters

kind	the option to retrieve

Returns: Whether the header contains a specific kind of option, or 0

Definition at line 495 of file tcp-header.cc.

References m_options.

Referenced by ns3::TcpSocketBase::DoForwardUp(), and ns3::TcpSocketBase::EstimateRtt().

Here is the caller graph for this function:

◆ GetOptionLength()

uint8_t ns3::TcpHeader::GetOptionLength ( ) const

Get the total length of appended options.

Returns: the total length of options appended to this TcpHeader

Definition at line 161 of file tcp-header.cc.

References m_optionsLen.

Referenced by ns3::TcpSocketBase::AddOptionSack(), and TcpHeaderWithRFC793OptionTestCase::OneOptionAtTime().

Here is the caller graph for this function:

◆ GetOptionList()

const TcpHeader::TcpOptionList & ns3::TcpHeader::GetOptionList ( void ) const

Get the list of option in this header.

Returns: a const reference to the option list

Definition at line 489 of file tcp-header.cc.

References m_options.

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

Here is the caller graph for this function:

◆ GetSequenceNumber()

SequenceNumber32 ns3::TcpHeader::GetSequenceNumber ( void ) const

Get the sequence number.

Returns: the sequence number for this TcpHeader

Definition at line 143 of file tcp-header.cc.

References m_sequenceNumber.

Here is the caller graph for this function:

◆ GetSerializedSize()

uint32_t ns3::TcpHeader::GetSerializedSize ( void ) const

virtual

Returns: the expected size of the header.

This method is used by Packet::AddHeader to store a header into the byte buffer of a packet. This method should return the number of bytes which are needed to store the full header data by Serialize.

Implements ns3::Header.

Definition at line 309 of file tcp-header.cc.

References CalculateHeaderLength().

Referenced by TcpHeaderWithRFC793OptionTestCase::CheckNoPadding(), Deserialize(), TcpHeaderGetSetTestCase::DoRun(), and TcpHeaderWithRFC793OptionTestCase::OneOptionAtTime().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ GetSourcePort()

uint16_t ns3::TcpHeader::GetSourcePort ( ) const

Get the source port.

Returns: The source port for this TcpHeader

Definition at line 131 of file tcp-header.cc.

References m_sourcePort.

Referenced by ns3::IpcsClassifier::Classify(), ns3::EpcTftClassifier::Classify(), ns3::TcpSocketBase::DoForwardUp(), TcpHeaderGetSetTestCase::DoRun(), ns3::Ipv4QueueDiscItem::Hash(), ns3::Ipv6QueueDiscItem::Hash(), and ns3::TcpL4Protocol::NoEndPointsFound().

Here is the caller graph for this function:

◆ GetTypeId()

TypeId ns3::TcpHeader::GetTypeId ( void )

static

Get the type ID.

Returns: the object TypeId

Definition at line 270 of file tcp-header.cc.

References ns3::TypeId::SetParent().

Referenced by GetInstanceTypeId().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ GetUrgentPointer()

uint16_t ns3::TcpHeader::GetUrgentPointer ( ) const

Get the urgent pointer.

Returns: the urgent pointer for this TcpHeader

Definition at line 185 of file tcp-header.cc.

References m_urgentPointer.

Referenced by TcpHeaderGetSetTestCase::DoRun().

Here is the caller graph for this function:

◆ GetWindowSize()

uint16_t ns3::TcpHeader::GetWindowSize ( ) const

Get the window size.

Returns: the window size for this TcpHeader

Definition at line 179 of file tcp-header.cc.

References m_windowSize.

Referenced by ns3::TcpSocketBase::DoForwardUp(), TcpHeaderGetSetTestCase::DoRun(), TcpZeroWindowTest::Rx(), WScalingTestCase::Tx(), TcpZeroWindowTest::Tx(), and ns3::TcpSocketBase::UpdateWindowSize().

Here is the caller graph for this function:

◆ HasOption()

bool ns3::TcpHeader::HasOption ( uint8_t kind ) const

Check if the header has the option specified.

Parameters

kind	Option to check for

Returns: true if the header has the option, false otherwise

Definition at line 511 of file tcp-header.cc.

References m_options.

Referenced by TcpHeaderWithRFC793OptionTestCase::CheckCorrectDeserialize(), ns3::TcpSocketBase::DoForwardUp(), ns3::TcpSocketBase::EstimateRtt(), TcpHeaderWithRFC793OptionTestCase::OneOptionAtTime(), SackPermittedTestCase::Tx(), TimestampTestCase::Tx(), and WScalingTestCase::Tx().

Here is the caller graph for this function:

◆ InitializeChecksum() [1/3]

void ns3::TcpHeader::InitializeChecksum	(	const Address &	source,
		const Address &	destination,
		uint8_t	protocol
	)

Initialize the TCP checksum.

If you want to use tcp checksums, you should call this method prior to adding the header to a packet.

Parameters

source	the IP source to use in the underlying IP packet.
destination	the IP destination to use in the underlying IP packet.
protocol	the protocol number to use in the underlying IP packet.

Definition at line 211 of file tcp-header.cc.

References m_destination, m_protocol, and m_source.

◆ InitializeChecksum() [2/3]

void ns3::TcpHeader::InitializeChecksum	(	const Ipv4Address &	source,
		const Ipv4Address &	destination,
		uint8_t	protocol
	)

Initialize the TCP checksum.

If you want to use tcp checksums, you should call this method prior to adding the header to a packet.

Parameters

source	the IP source to use in the underlying IP packet.
destination	the IP destination to use in the underlying IP packet.
protocol	the protocol number to use in the underlying IP packet.

Definition at line 191 of file tcp-header.cc.

References m_destination, m_protocol, and m_source.

Referenced by ns3::TcpL4Protocol::SendPacketV4(), and ns3::TcpL4Protocol::SendPacketV6().

Here is the caller graph for this function:

◆ InitializeChecksum() [3/3]

void ns3::TcpHeader::InitializeChecksum	(	const Ipv6Address &	source,
		const Ipv6Address &	destination,
		uint8_t	protocol
	)

Initialize the TCP checksum.

If you want to use tcp checksums, you should call this method prior to adding the header to a packet.

Parameters

source	the IP source to use in the underlying IP packet.
destination	the IP destination to use in the underlying IP packet.
protocol	the protocol number to use in the underlying IP packet.

Definition at line 201 of file tcp-header.cc.

References m_destination, m_protocol, and m_source.

◆ IsChecksumOk()

bool ns3::TcpHeader::IsChecksumOk ( void ) const

Is the TCP checksum correct ?

Returns: true if the checksum is correct, false otherwise.

Definition at line 264 of file tcp-header.cc.

References m_goodChecksum.

◆ Print()

void ns3::TcpHeader::Print ( std::ostream & os ) const

virtual

Parameters

os output stream This method is used by Packet::Print to print the content of a header as ascii data to a c++ output stream. Although the header is free to format its output as it wishes, it is recommended to follow a few rules to integrate with the packet pretty printer: start with flags, small field values located between a pair of parens. Values should be separated by whitespace. Follow the parens with the important fields, separated by whitespace. i.e.: (field1 val1 field2 val2 field3 val3) field4 val4 field5 val5

Implements ns3::Header.

Definition at line 287 of file tcp-header.cc.

References FlagsToString(), m_ackNumber, m_destinationPort, m_flags, m_options, m_sequenceNumber, m_sourcePort, and m_windowSize.

Here is the call graph for this function:

◆ Serialize()

void ns3::TcpHeader::Serialize ( Buffer::Iterator start ) const

virtual

Parameters

start an iterator which points to where the header should be written.

This method is used by Packet::AddHeader to store a header into the byte buffer of a packet. The data written is expected to match bit-for-bit the representation of this header in a real network.

Implements ns3::Header.

Definition at line 315 of file tcp-header.cc.

References CalculateHeaderChecksum(), ns3::Buffer::Iterator::CalculateIpChecksum(), ns3::TcpOption::END, GetLength(), ns3::SequenceNumber< NUMERIC_TYPE, SIGNED_TYPE >::GetValue(), m_ackNumber, m_calcChecksum, m_destinationPort, m_flags, m_options, m_sequenceNumber, m_sourcePort, m_urgentPointer, m_windowSize, ns3::Buffer::Iterator::Next(), visualizer.core::start(), ns3::Buffer::Iterator::WriteHtonU16(), ns3::Buffer::Iterator::WriteHtonU32(), ns3::Buffer::Iterator::WriteU16(), and ns3::Buffer::Iterator::WriteU8().

Referenced by TcpHeaderWithRFC793OptionTestCase::CheckCorrectDeserialize(), TcpHeaderWithRFC793OptionTestCase::CheckNoPadding(), TcpHeaderGetSetTestCase::DoRun(), and TcpHeaderWithRFC793OptionTestCase::OneOptionAtTime().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ SetAckNumber()

void ns3::TcpHeader::SetAckNumber ( SequenceNumber32 ackNumber )

Set the ACK number.

Parameters

ackNumber the ACK number for this TcpHeader

Definition at line 107 of file tcp-header.cc.

References m_ackNumber.

Referenced by ns3::TcpSocketBase::DoForwardUp(), TcpHeaderGetSetTestCase::DoRun(), ns3::TcpL4Protocol::NoEndPointsFound(), ns3::TcpSocketBase::PersistTimeout(), ns3::TcpSocketBase::SendDataPacket(), TcpDctcpCongestedRouter::SendDataPacket(), ns3::TcpSocketCongestedRouter::SendDataPacket(), ns3::TcpSocketBase::SendEmptyPacket(), and ns3::TcpSocketSmallAcks::SendEmptyPacket().

Here is the caller graph for this function:

◆ SetDestinationPort()

void ns3::TcpHeader::SetDestinationPort ( uint16_t port )

Set the destination port.

Parameters

port	the destination port for this TcpHeader

Definition at line 95 of file tcp-header.cc.

References m_destinationPort, and port.

Referenced by ns3::TcpSocketBase::DoForwardUp(), TcpHeaderGetSetTestCase::DoRun(), FqCobaltQueueDiscTCPFlowsSeparation::DoRun(), FqCoDelQueueDiscTCPFlowsSeparation::DoRun(), FqPieQueueDiscTCPFlowsSeparation::DoRun(), ns3::TcpL4Protocol::NoEndPointsFound(), ns3::TcpSocketBase::PersistTimeout(), ns3::TcpSocketBase::SendDataPacket(), TcpDctcpCongestedRouter::SendDataPacket(), ns3::TcpSocketCongestedRouter::SendDataPacket(), ns3::TcpSocketBase::SendEmptyPacket(), and ns3::TcpSocketSmallAcks::SendEmptyPacket().

Here is the caller graph for this function:

◆ SetFlags()

void ns3::TcpHeader::SetFlags ( uint8_t flags )

Set flags of the header.

Parameters

flags the flags for this TcpHeader

Definition at line 113 of file tcp-header.cc.

References m_flags.

Referenced by ns3::TcpSocketBase::DoForwardUp(), TcpHeaderGetSetTestCase::DoRun(), ns3::TcpL4Protocol::NoEndPointsFound(), ns3::TcpSocketBase::SendDataPacket(), TcpDctcpCongestedRouter::SendDataPacket(), ns3::TcpSocketCongestedRouter::SendDataPacket(), ns3::TcpSocketBase::SendEmptyPacket(), and ns3::TcpSocketSmallAcks::SendEmptyPacket().

Here is the caller graph for this function:

◆ SetSequenceNumber()

void ns3::TcpHeader::SetSequenceNumber ( SequenceNumber32 sequenceNumber )

Set the sequence Number.

Parameters

sequenceNumber the sequence number for this TcpHeader

Definition at line 101 of file tcp-header.cc.

References m_sequenceNumber.

Referenced by ns3::TcpSocketBase::DoForwardUp(), TcpHeaderGetSetTestCase::DoRun(), ns3::TcpL4Protocol::NoEndPointsFound(), ns3::TcpSocketBase::PersistTimeout(), ns3::TcpSocketBase::SendDataPacket(), TcpDctcpCongestedRouter::SendDataPacket(), ns3::TcpSocketCongestedRouter::SendDataPacket(), ns3::TcpSocketBase::SendEmptyPacket(), ns3::TcpSocketSmallAcks::SendEmptyPacket(), and TcpRxBufferTestCase::TestUpdateSACKList().

Here is the caller graph for this function:

◆ SetSourcePort()

void ns3::TcpHeader::SetSourcePort ( uint16_t port )

Set the source port.

Parameters

port	The source port for this TcpHeader

Definition at line 89 of file tcp-header.cc.

References m_sourcePort, and port.

Referenced by ns3::TcpSocketBase::DoForwardUp(), TcpHeaderGetSetTestCase::DoRun(), FqCobaltQueueDiscTCPFlowsSeparation::DoRun(), FqCoDelQueueDiscTCPFlowsSeparation::DoRun(), FqPieQueueDiscTCPFlowsSeparation::DoRun(), ns3::TcpL4Protocol::NoEndPointsFound(), ns3::TcpSocketBase::PersistTimeout(), ns3::TcpSocketBase::SendDataPacket(), TcpDctcpCongestedRouter::SendDataPacket(), ns3::TcpSocketCongestedRouter::SendDataPacket(), ns3::TcpSocketBase::SendEmptyPacket(), and ns3::TcpSocketSmallAcks::SendEmptyPacket().

Here is the caller graph for this function:

◆ SetUrgentPointer()

void ns3::TcpHeader::SetUrgentPointer ( uint16_t urgentPointer )

Set the urgent pointer.

Parameters

urgentPointer the urgent pointer for this TcpHeader

Definition at line 125 of file tcp-header.cc.

References m_urgentPointer.

Referenced by TcpHeaderGetSetTestCase::DoRun().

Here is the caller graph for this function:

◆ SetWindowSize()

void ns3::TcpHeader::SetWindowSize ( uint16_t windowSize )

Set the window size.

Parameters

windowSize the window size for this TcpHeader

Definition at line 119 of file tcp-header.cc.

References m_windowSize.

Referenced by ns3::TcpSocketBase::DoForwardUp(), TcpHeaderGetSetTestCase::DoRun(), ns3::TcpSocketBase::PersistTimeout(), ns3::TcpSocketBase::SendDataPacket(), TcpDctcpCongestedRouter::SendDataPacket(), ns3::TcpSocketCongestedRouter::SendDataPacket(), ns3::TcpSocketBase::SendEmptyPacket(), and ns3::TcpSocketSmallAcks::SendEmptyPacket().

Here is the caller graph for this function:

Friends And Related Function Documentation

◆ operator<<

std::ostream& operator<<	(	std::ostream &	os,
		TcpHeader const &	tc
	)

friend

Print a TCP header into an output stream.

Parameters

os	output stream
tc	TCP header to print

Returns: The ostream passed as first argument

Definition at line 540 of file tcp-header.cc.

◆ operator==

bool operator==	(	const TcpHeader &	lhs,
		const TcpHeader &	rhs
	)

friend

Comparison operator.

Parameters

lhs	left operand
rhs	right operand

Returns: true if the operands are equal

Definition at line 527 of file tcp-header.cc.

Member Data Documentation

◆ m_ackNumber

SequenceNumber32 ns3::TcpHeader::m_ackNumber

private

ACK number.

Definition at line 338 of file tcp-header.h.

Referenced by Deserialize(), GetAckNumber(), Print(), Serialize(), and SetAckNumber().

◆ m_calcChecksum

bool ns3::TcpHeader::m_calcChecksum

private

Flag to calculate checksum.

Definition at line 348 of file tcp-header.h.

Referenced by Deserialize(), EnableChecksums(), and Serialize().

◆ m_destination

Address ns3::TcpHeader::m_destination

private

Destination IP address.

Definition at line 345 of file tcp-header.h.

Referenced by CalculateHeaderChecksum(), and InitializeChecksum().

◆ m_destinationPort

uint16_t ns3::TcpHeader::m_destinationPort

private

Destination port.

Definition at line 336 of file tcp-header.h.

Referenced by Deserialize(), GetDestinationPort(), Print(), Serialize(), and SetDestinationPort().

◆ m_flags

uint8_t ns3::TcpHeader::m_flags

private

Flags (really a uint6_t)

Definition at line 340 of file tcp-header.h.

Referenced by Deserialize(), GetFlags(), Print(), Serialize(), and SetFlags().

◆ m_goodChecksum

bool ns3::TcpHeader::m_goodChecksum

private

Flag to indicate that checksum is correct.

Definition at line 349 of file tcp-header.h.

Referenced by Deserialize(), and IsChecksumOk().

◆ m_length

uint8_t ns3::TcpHeader::m_length

private

Length (really a uint4_t) in words.

Definition at line 339 of file tcp-header.h.

Referenced by AppendOption(), Deserialize(), and GetLength().

◆ m_maxOptionsLen

const uint8_t ns3::TcpHeader::m_maxOptionsLen = 40

staticprivate

Maximum options length.

Definition at line 351 of file tcp-header.h.

Referenced by AppendOption(), Deserialize(), and GetMaxOptionLength().

◆ m_options

TcpOptionList ns3::TcpHeader::m_options

private

TcpOption present in the header.

Definition at line 352 of file tcp-header.h.

Referenced by AppendOption(), CalculateHeaderLength(), Deserialize(), GetOption(), GetOptionList(), HasOption(), Print(), and Serialize().

◆ m_optionsLen

uint8_t ns3::TcpHeader::m_optionsLen

private

Tcp options length.

Definition at line 353 of file tcp-header.h.

Referenced by AppendOption(), Deserialize(), and GetOptionLength().

◆ m_protocol

uint8_t ns3::TcpHeader::m_protocol

private

Protocol number.

Definition at line 346 of file tcp-header.h.

Referenced by CalculateHeaderChecksum(), and InitializeChecksum().

◆ m_sequenceNumber

SequenceNumber32 ns3::TcpHeader::m_sequenceNumber

private

Sequence number.

Definition at line 337 of file tcp-header.h.

Referenced by Deserialize(), GetSequenceNumber(), Print(), Serialize(), and SetSequenceNumber().

◆ m_source

Address ns3::TcpHeader::m_source

private

Source IP address.

Definition at line 344 of file tcp-header.h.

Referenced by CalculateHeaderChecksum(), and InitializeChecksum().

◆ m_sourcePort

uint16_t ns3::TcpHeader::m_sourcePort

private

Source port.

Definition at line 335 of file tcp-header.h.

Referenced by Deserialize(), GetSourcePort(), Print(), Serialize(), and SetSourcePort().

◆ m_urgentPointer

uint16_t ns3::TcpHeader::m_urgentPointer

private

Urgent pointer.

Definition at line 342 of file tcp-header.h.

Referenced by Deserialize(), GetUrgentPointer(), Serialize(), and SetUrgentPointer().

◆ m_windowSize

uint16_t ns3::TcpHeader::m_windowSize

private

Window size.

Definition at line 341 of file tcp-header.h.

Referenced by Deserialize(), GetWindowSize(), Print(), Serialize(), and SetWindowSize().

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

src/internet/model/tcp-header.h
src/internet/model/tcp-header.cc

Public Types

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Friends

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ TcpOptionList

Member Enumeration Documentation

◆ Flags_t

Constructor & Destructor Documentation

◆ TcpHeader()

◆ ~TcpHeader()

Member Function Documentation

◆ AppendOption()

◆ CalculateHeaderChecksum()

◆ CalculateHeaderLength()

◆ Deserialize()

◆ EnableChecksums()

◆ FlagsToString()

◆ GetAckNumber()

◆ GetDestinationPort()

◆ GetFlags()

◆ GetInstanceTypeId()

◆ GetLength()

◆ GetMaxOptionLength()

◆ GetOption()

◆ GetOptionLength()

◆ GetOptionList()

◆ GetSequenceNumber()

◆ GetSerializedSize()

◆ GetSourcePort()

◆ GetTypeId()

◆ GetUrgentPointer()

◆ GetWindowSize()

◆ HasOption()

◆ InitializeChecksum() [1/3]

◆ InitializeChecksum() [2/3]

◆ InitializeChecksum() [3/3]

◆ IsChecksumOk()

◆ Print()

◆ Serialize()

◆ SetAckNumber()

◆ SetDestinationPort()

◆ SetFlags()

◆ SetSequenceNumber()

◆ SetSourcePort()

◆ SetUrgentPointer()

◆ SetWindowSize()

Friends And Related Function Documentation

◆ operator<<

◆ operator==

Member Data Documentation

◆ m_ackNumber

◆ m_calcChecksum

◆ m_destination

◆ m_destinationPort

◆ m_flags

◆ m_goodChecksum

◆ m_length

◆ m_maxOptionsLen

◆ m_options

◆ m_optionsLen

◆ m_protocol

◆ m_sequenceNumber

◆ m_source

◆ m_sourcePort

◆ m_urgentPointer

◆ m_windowSize