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 ()
	c-tor More...

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

void	Clear ()
	Clear header. More...

uint32_t	Deserialize (Buffer::Iterator start)

uint8_t	GetDestCount () const
	Return number of unreachable destinations in RERR message. More...

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

bool	GetNoDelete () const

uint32_t	GetSerializedSize () const

bool	operator== (RerrHeader const &o) const

void	Print (std::ostream &os) const

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

void	Serialize (Buffer::Iterator i) const

void	SetNoDelete (bool f)

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

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 TypeId	GetTypeId ()

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 Attributes
uint8_t	m_flag
	No delete flag. More...

uint8_t	m_reserved
	Not used. More...

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

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

Definition at line 272 of file aodv-packet.h.

Constructor & Destructor Documentation

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

c-tor

Definition at line 495 of file aodv-packet.cc.

Member Function Documentation

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

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

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

Definition at line 589 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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void ns3::aodv::RerrHeader::Clear ( )

Clear header.

Definition at line 611 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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uint32_t ns3::aodv::RerrHeader::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 540 of file aodv-packet.cc.

References first::address, ns3::Buffer::Iterator::GetDistanceFrom(), GetSerializedSize(), m_flag, m_reserved, m_unreachableDstSeqNo, NS_ASSERT, ns3::ReadFrom(), ns3::Buffer::Iterator::ReadNtohU32(), ns3::Buffer::Iterator::ReadU8(), and visualizer.core::start().

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

inline

Return number of unreachable destinations in RERR message.

Definition at line 302 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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TypeId ns3::aodv::RerrHeader::GetInstanceTypeId ( ) 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 514 of file aodv-packet.cc.

References GetTypeId().

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

Definition at line 583 of file aodv-packet.cc.

References m_flag.

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

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uint32_t ns3::aodv::RerrHeader::GetSerializedSize ( ) 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 520 of file aodv-packet.cc.

References GetDestCount().

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

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

static

Definition at line 503 of file aodv-packet.cc.

References ns3::TypeId::SetParent().

Referenced by GetInstanceTypeId().

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

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

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

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void ns3::aodv::RerrHeader::Print ( std::ostream & os ) const

virtual

Parameters

os output stream This method is used by Packet::Print to print the content of a trailer as ascii data to a c++ output stream. Although the trailer 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 562 of file aodv-packet.cc.

References m_unreachableDstSeqNo.

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

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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.

Returns: true on success

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

References m_unreachableDstSeqNo.

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

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void ns3::aodv::RerrHeader::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 526 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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