Base class for all the ICMP packet headers. More...

#include "icmpv4.h"

Inheritance diagram for ns3::Icmpv4Header:

Collaboration diagram for ns3::Icmpv4Header:

Public Types
enum	Type_e { ICMPV4_ECHO_REPLY = 0 , ICMPV4_DEST_UNREACH = 3 , ICMPV4_ECHO = 8 , ICMPV4_TIME_EXCEEDED = 11 }
	ICMP type code. More...

Public Member Functions
	Icmpv4Header ()

	~Icmpv4Header () override

uint32_t	Deserialize (Buffer::Iterator start) override

void	EnableChecksum ()
	Enables ICMP Checksum calculation. More...

uint8_t	GetCode () const
	Get ICMP code. More...

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

uint32_t	GetSerializedSize () const override

uint8_t	GetType () const
	Get ICMP type. More...

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

void	Serialize (Buffer::Iterator start) const override

void	SetCode (uint8_t code)
	Set ICMP code. More...

void	SetType (uint8_t type)
	Set ICMP type. More...

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

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 errors. 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 TypeId	GetTypeId ()
	Get the type ID. More...

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

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

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

Private Attributes
bool	m_calcChecksum
	true if checksum is calculated More...

uint8_t	m_code
	ICMP code. More...

uint8_t	m_type
	ICMP type. 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 ()
	Notifier called once the ObjectBase is fully constructed. More...

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

Detailed Description

Base class for all the ICMP packet headers.

This header is the common part in all the ICMP packets.

Definition at line 42 of file icmpv4.h.

Member Enumeration Documentation

◆ Type_e

enum ns3::Icmpv4Header::Type_e

ICMP type code.

Enumerator
ICMPV4_ECHO_REPLY
ICMPV4_DEST_UNREACH
ICMPV4_ECHO
ICMPV4_TIME_EXCEEDED

Definition at line 48 of file icmpv4.h.

Constructor & Destructor Documentation

◆ Icmpv4Header()

ns3::Icmpv4Header::Icmpv4Header ( )

Definition at line 46 of file icmpv4.cc.

References NS_LOG_FUNCTION.

◆ ~Icmpv4Header()

ns3::Icmpv4Header::~Icmpv4Header ( )

override

Definition at line 54 of file icmpv4.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

◆ Deserialize()

uint32_t ns3::Icmpv4Header::Deserialize ( Buffer::Iterator start )

overridevirtual

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 99 of file icmpv4.cc.

References m_code, m_type, NS_LOG_FUNCTION, and two-ray-to-three-gpp-ch-calibration::start.

◆ EnableChecksum()

void ns3::Icmpv4Header::EnableChecksum ( )

Enables ICMP Checksum calculation.

Definition at line 60 of file icmpv4.cc.

References m_calcChecksum, and NS_LOG_FUNCTION.

Referenced by ns3::Ping::Send(), ns3::V4TraceRoute::Send(), ns3::Icmpv4L4Protocol::SendMessage(), ChainRegressionTest::SendPing(), and ns3::olsr::Bug780Test::SendPing().

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◆ GetCode()

uint8_t ns3::Icmpv4Header::GetCode ( ) const

Get ICMP code.

Returns: the ICMP code

Definition at line 137 of file icmpv4.cc.

References m_code, and NS_LOG_FUNCTION.

Referenced by ns3::Icmpv4L4Protocol::Forward().

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◆ GetInstanceTypeId()

TypeId ns3::Icmpv4Header::GetInstanceTypeId ( ) const

overridevirtual

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 67 of file icmpv4.cc.

References GetTypeId(), and NS_LOG_FUNCTION.

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◆ GetSerializedSize()

uint32_t ns3::Icmpv4Header::GetSerializedSize ( ) const

overridevirtual

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 74 of file icmpv4.cc.

References NS_LOG_FUNCTION.

◆ GetType()

uint8_t ns3::Icmpv4Header::GetType ( ) const

Get ICMP type.

Returns: the ICMP type

Definition at line 130 of file icmpv4.cc.

References m_type, and NS_LOG_FUNCTION.

Referenced by ns3::Icmpv4L4Protocol::Forward(), ns3::Ipv4RawSocketImpl::ForwardUp(), ns3::Icmpv4L4Protocol::Receive(), ns3::Ping::Receive(), ns3::V4TraceRoute::Receive(), ns3::olsr::Bug780Test::Receive(), IcmpEchoReplyTestCase::ReceivePkt(), and IcmpTimeExceedTestCase::ReceivePkt().

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◆ GetTypeId()

TypeId ns3::Icmpv4Header::GetTypeId ( void )

static

Get the type ID.

Returns: the object TypeId

Definition at line 37 of file icmpv4.cc.

References ns3::TypeId::SetParent().

Referenced by GetInstanceTypeId().

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◆ Print()

void ns3::Icmpv4Header::Print ( std::ostream & os ) const

overridevirtual

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 109 of file icmpv4.cc.

References m_code, m_type, and NS_LOG_FUNCTION.

◆ Serialize()

void ns3::Icmpv4Header::Serialize ( Buffer::Iterator start ) const

overridevirtual

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 81 of file icmpv4.cc.

References ns3::Buffer::Iterator::CalculateIpChecksum(), ns3::Buffer::Iterator::GetSize(), m_calcChecksum, m_code, m_type, ns3::Buffer::Iterator::Next(), NS_LOG_FUNCTION, two-ray-to-three-gpp-ch-calibration::start, ns3::Buffer::Iterator::WriteHtonU16(), ns3::Buffer::Iterator::WriteU16(), and ns3::Buffer::Iterator::WriteU8().