Route Error (RERR) Message Format. More...

#include "aodv-packet.h"

Inheritance diagram for ns3::aodv::RerrHeader:

Collaboration diagram for ns3::aodv::RerrHeader:

Public Member Functions
	RerrHeader ()
	constructor

bool	AddUnDestination (Ipv4Address dst, uint32_t seqNo)
	Add unreachable node address and its sequence number in RERR header.

void	Clear ()
	Clear header.

uint32_t	Deserialize (Buffer::Iterator start) override

uint8_t	GetDestCount () const

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

bool	GetNoDelete () const
	Get the no delete flag.

uint32_t	GetSerializedSize () const override

bool	operator== (const RerrHeader &o) const
	Comparison operator.

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

bool	RemoveUnDestination (std::pair< Ipv4Address, uint32_t > &un)
	Delete pair (address + sequence number) from REER header, if the number of unreachable destinations > 0.

void	Serialize (Buffer::Iterator i) const override

void	SetNoDelete (bool f)
	Set the no delete flag.

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

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

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

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

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

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

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

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

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

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

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

Static Public Member Functions
static TypeId	GetTypeId ()
	Get the type ID.

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

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

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

Private Attributes
uint8_t	m_flag
	No delete flag.

uint8_t	m_reserved
	Not used (must be 0)

std::map< Ipv4Address, uint32_t >	m_unreachableDstSeqNo
	List of Unreachable destination: IP addresses and sequence numbers.

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

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

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

Detailed Description

Route Error (RERR) Message Format.

Introspection did not find any typical Config paths.

0                   1                   2                   3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|     Type      |N|          Reserved           |   DestCount   |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|            Unreachable Destination IP Address (1)             |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|         Unreachable Destination Sequence Number (1)           |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-|
|  Additional Unreachable Destination IP Addresses (if needed)  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|Additional Unreachable Destination Sequence Numbers (if needed)|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

No Attributes are defined for this type.
No TraceSources are defined for this type.
Group: Aodv

Size of this type is 64 bytes (on a 64-bit architecture).

Definition at line 580 of file aodv-packet.h.

Constructor & Destructor Documentation

◆ RerrHeader()

ns3::aodv::RerrHeader::RerrHeader ( )

constructor

Definition at line 510 of file aodv-packet.cc.

Member Function Documentation

◆ AddUnDestination()

bool ns3::aodv::RerrHeader::AddUnDestination	(	Ipv4Address	dst,
		uint32_t	seqNo )

Add unreachable node address and its sequence number in RERR header.

Parameters

dst	unreachable IPv4 address
seqNo	unreachable sequence number

Returns: false if we already added maximum possible number of unreachable destinations

Definition at line 606 of file aodv-packet.cc.

References GetDestCount(), m_unreachableDstSeqNo, and NS_ASSERT.

Referenced by ns3::aodv::RerrHeaderTest::DoRun(), ns3::aodv::RoutingProtocol::RecvError(), ns3::aodv::RoutingProtocol::SendRerrWhenBreaksLinkToNextHop(), and ns3::aodv::RoutingProtocol::SendRerrWhenNoRouteToForward().

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◆ Clear()

void ns3::aodv::RerrHeader::Clear ( )

Clear header.

Definition at line 632 of file aodv-packet.cc.

References m_flag, m_reserved, and m_unreachableDstSeqNo.

Referenced by ns3::aodv::RoutingProtocol::RecvError(), and ns3::aodv::RoutingProtocol::SendRerrWhenBreaksLinkToNextHop().

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◆ Deserialize()

uint32_t ns3::aodv::RerrHeader::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 554 of file aodv-packet.cc.

References ns3::Buffer::Iterator::GetDistanceFrom(), GetSerializedSize(), m_flag, m_reserved, m_unreachableDstSeqNo, NS_ASSERT, ns3::ReadFrom(), ns3::Buffer::Iterator::ReadNtohU32(), and ns3::Buffer::Iterator::ReadU8().

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◆ GetDestCount()

uint8_t ns3::aodv::RerrHeader::GetDestCount ( ) const

inline

Returns: number of unreachable destinations in RERR message

Definition at line 629 of file aodv-packet.h.

References m_unreachableDstSeqNo.

Referenced by AddUnDestination(), ns3::aodv::RerrHeaderTest::DoRun(), GetSerializedSize(), operator==(), ns3::aodv::RoutingProtocol::RecvError(), ns3::aodv::RoutingProtocol::SendRerrWhenBreaksLinkToNextHop(), and Serialize().

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◆ GetInstanceTypeId()

TypeId ns3::aodv::RerrHeader::GetInstanceTypeId ( ) const

overridevirtual

Get the most derived TypeId for this Object.

This method is provided by ns3::Object::GetInstanceTypeId but classes which derive from ns3::ObjectBase directly have to implement it themselves. Typically, this method should simply return the output of GetTypeId().

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

Implements ns3::ObjectBase.

Definition at line 529 of file aodv-packet.cc.

References GetTypeId().

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◆ GetNoDelete()

bool ns3::aodv::RerrHeader::GetNoDelete ( ) const

Get the no delete flag.

Returns: the no delete flag

Definition at line 600 of file aodv-packet.cc.

References m_flag.

Referenced by ns3::aodv::RerrHeaderTest::DoRun().

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◆ GetSerializedSize()

uint32_t ns3::aodv::RerrHeader::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 535 of file aodv-packet.cc.

References GetDestCount().

Referenced by Deserialize(), and ns3::aodv::RerrHeaderTest::DoRun().

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◆ GetTypeId()

TypeId ns3::aodv::RerrHeader::GetTypeId ( )

static

Get the type ID.

Returns: the object TypeId

Definition at line 519 of file aodv-packet.cc.

References ns3::TypeId::SetParent().

Referenced by GetInstanceTypeId().

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◆ operator==()

bool ns3::aodv::RerrHeader::operator== ( const RerrHeader & o ) const

Comparison operator.

Parameters

o	RERR header to compare

Returns: true if the RERR headers are equal

Definition at line 640 of file aodv-packet.cc.

References GetDestCount(), m_flag, m_reserved, and m_unreachableDstSeqNo.

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◆ Print()

void ns3::aodv::RerrHeader::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 576 of file aodv-packet.cc.

References m_unreachableDstSeqNo.

Referenced by ns3::aodv::operator<<().

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◆ RemoveUnDestination()

bool ns3::aodv::RerrHeader::RemoveUnDestination ( std::pair< Ipv4Address, uint32_t > & un )

Delete pair (address + sequence number) from REER header, if the number of unreachable destinations > 0.

Parameters

un	unreachable pair (address + sequence number)

Returns: true on success

Definition at line 619 of file aodv-packet.cc.

References m_unreachableDstSeqNo.

Referenced by ns3::aodv::RoutingProtocol::RecvError().

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◆ Serialize()

void ns3::aodv::RerrHeader::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 541 of file aodv-packet.cc.

References GetDestCount(), m_flag, m_reserved, m_unreachableDstSeqNo, ns3::Buffer::Iterator::WriteHtonU32(), ns3::WriteTo(), and ns3::Buffer::Iterator::WriteU8().

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◆ SetNoDelete()

void ns3::aodv::RerrHeader::SetNoDelete ( bool f )

Set the no delete flag.

Parameters

f	the no delete flag

Definition at line 587 of file aodv-packet.cc.

References m_flag.

Referenced by ns3::aodv::RerrHeaderTest::DoRun().

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Member Data Documentation

◆ m_flag

uint8_t ns3::aodv::RerrHeader::m_flag

private

No delete flag.

Definition at line 642 of file aodv-packet.h.

Referenced by Clear(), Deserialize(), GetNoDelete(), operator==(), Serialize(), and SetNoDelete().

◆ m_reserved

uint8_t ns3::aodv::RerrHeader::m_reserved

private

Not used (must be 0)

Definition at line 643 of file aodv-packet.h.

Referenced by Clear(), Deserialize(), operator==(), and Serialize().

◆ m_unreachableDstSeqNo

std::map<Ipv4Address, uint32_t> ns3::aodv::RerrHeader::m_unreachableDstSeqNo

private

List of Unreachable destination: IP addresses and sequence numbers.

Definition at line 646 of file aodv-packet.h.

Referenced by AddUnDestination(), Clear(), Deserialize(), GetDestCount(), operator==(), Print(), RemoveUnDestination(), and Serialize().

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

src/aodv/model/aodv-packet.h
src/aodv/model/aodv-packet.cc

Public Member Functions

Static Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ RerrHeader()

Member Function Documentation

◆ AddUnDestination()

◆ Clear()

◆ Deserialize()

◆ GetDestCount()

◆ GetInstanceTypeId()

◆ GetNoDelete()

◆ GetSerializedSize()

◆ GetTypeId()

◆ operator==()

◆ Print()

◆ RemoveUnDestination()

◆ Serialize()

◆ SetNoDelete()

Member Data Documentation

◆ m_flag

◆ m_reserved

◆ m_unreachableDstSeqNo