TCP socket creation and multiplexing/demultiplexing. More...

#include "tcp-l4-protocol.h"

Inheritance diagram for ns3::TcpL4Protocol:

Collaboration diagram for ns3::TcpL4Protocol:

Public Member Functions
	TcpL4Protocol ()

	TcpL4Protocol (const TcpL4Protocol &)=delete

	~TcpL4Protocol () override

void	AddSocket (Ptr< TcpSocketBase > socket)
	Make a socket fully operational.

Ipv4EndPoint *	Allocate ()
	Allocate an IPv4 Endpoint.

Ipv4EndPoint *	Allocate (Ipv4Address address)
	Allocate an IPv4 Endpoint.

Ipv4EndPoint *	Allocate (Ptr< NetDevice > boundNetDevice, Ipv4Address address, uint16_t port)
	Allocate an IPv4 Endpoint.

Ipv4EndPoint *	Allocate (Ptr< NetDevice > boundNetDevice, Ipv4Address localAddress, uint16_t localPort, Ipv4Address peerAddress, uint16_t peerPort)
	Allocate an IPv4 Endpoint.

Ipv4EndPoint *	Allocate (Ptr< NetDevice > boundNetDevice, uint16_t port)
	Allocate an IPv4 Endpoint.

Ipv6EndPoint *	Allocate6 ()
	Allocate an IPv6 Endpoint.

Ipv6EndPoint *	Allocate6 (Ipv6Address address)
	Allocate an IPv6 Endpoint.

Ipv6EndPoint *	Allocate6 (Ptr< NetDevice > boundNetDevice, Ipv6Address address, uint16_t port)
	Allocate an IPv6 Endpoint.

Ipv6EndPoint *	Allocate6 (Ptr< NetDevice > boundNetDevice, Ipv6Address localAddress, uint16_t localPort, Ipv6Address peerAddress, uint16_t peerPort)
	Allocate an IPv6 Endpoint.

Ipv6EndPoint *	Allocate6 (Ptr< NetDevice > boundNetDevice, uint16_t port)
	Allocate an IPv6 Endpoint.

Ptr< Socket >	CreateSocket ()
	Create a TCP socket using the TypeId set by SocketType attribute.

Ptr< Socket >	CreateSocket (TypeId congestionTypeId)
	Create a TCP socket using the specified congestion control algorithm.

Ptr< Socket >	CreateSocket (TypeId congestionTypeId, TypeId recoveryTypeId)
	Create a TCP socket using the specified congestion control algorithm TypeId.

void	DeAllocate (Ipv4EndPoint *endPoint)
	Remove an IPv4 Endpoint.

void	DeAllocate (Ipv6EndPoint *endPoint)
	Remove an IPv6 Endpoint.

IpL4Protocol::DownTargetCallback	GetDownTarget () const override
	This method allows a caller to get the current down target callback set for this L4 protocol (IPv4 case)

IpL4Protocol::DownTargetCallback6	GetDownTarget6 () const override
	This method allows a caller to get the current down target callback set for this L4 protocol (IPv6 case)

int	GetProtocolNumber () const override
	Returns the protocol number of this protocol.

TcpL4Protocol &	operator= (const TcpL4Protocol &)=delete

IpL4Protocol::RxStatus	Receive (Ptr< Packet > p, const Ipv4Header &incomingIpHeader, Ptr< Ipv4Interface > incomingInterface) override
	Called from lower-level layers to send the packet up in the stack.

IpL4Protocol::RxStatus	Receive (Ptr< Packet > p, const Ipv6Header &incomingIpHeader, Ptr< Ipv6Interface > incomingInterface) override
	Called from lower-level layers to send the packet up in the stack.

void	ReceiveIcmp (Ipv4Address icmpSource, uint8_t icmpTtl, uint8_t icmpType, uint8_t icmpCode, uint32_t icmpInfo, Ipv4Address payloadSource, Ipv4Address payloadDestination, const uint8_t payload[8]) override
	Called from lower-level layers to send the ICMP packet up in the stack.

void	ReceiveIcmp (Ipv6Address icmpSource, uint8_t icmpTtl, uint8_t icmpType, uint8_t icmpCode, uint32_t icmpInfo, Ipv6Address payloadSource, Ipv6Address payloadDestination, const uint8_t payload[8]) override
	Called from lower-level layers to send the ICMPv6 packet up in the stack.

bool	RemoveSocket (Ptr< TcpSocketBase > socket)
	Remove a socket from the internal list.

void	SendPacket (Ptr< Packet > pkt, const TcpHeader &outgoing, const Address &saddr, const Address &daddr, Ptr< NetDevice > oif=nullptr) const
	Send a packet via TCP (IP-agnostic)

void	SetDownTarget (IpL4Protocol::DownTargetCallback cb) override
	This method allows a caller to set the current down target callback set for this L4 protocol (IPv4 case)

void	SetDownTarget6 (IpL4Protocol::DownTargetCallback6 cb) override
	This method allows a caller to set the current down target callback set for this L4 protocol (IPv6 case)

void	SetNode (Ptr< Node > node)
	Set node associated with this stack.

Public Member Functions inherited from ns3::IpL4Protocol
	~IpL4Protocol () override

Public Member Functions inherited from ns3::Object
	Object ()
	Constructor.

	~Object () override
	Destructor.

void	AggregateObject (Ptr< Object > other)
	Aggregate two Objects together.

void	Dispose ()
	Dispose of this Object.

AggregateIterator	GetAggregateIterator () const
	Get an iterator to the Objects aggregated to this one.

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

template<typename T >
Ptr< T >	GetObject () const
	Get a pointer to the requested aggregated Object.

template<>
Ptr< Object >	GetObject () const
	Specialization of () for objects of type ns3::Object.

template<typename T >
Ptr< T >	GetObject (TypeId tid) const
	Get a pointer to the requested aggregated Object by TypeId.

template<>
Ptr< Object >	GetObject (TypeId tid) const
	Specialization of (TypeId tid) for objects of type ns3::Object.

void	Initialize ()
	Invoke DoInitialize on all Objects aggregated to this one.

bool	IsInitialized () const
	Check if the object has been initialized.

void	UnidirectionalAggregateObject (Ptr< Object > other)
	Aggregate an Object to another Object.

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	Default constructor.

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor.

uint32_t	GetReferenceCount () const
	Get the reference count of the object.

SimpleRefCount &	operator= (const SimpleRefCount &o)
	Assignment operator.

void	Ref () const
	Increment the reference count.

void	Unref () const
	Decrement the reference count.

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::IpL4Protocol
static TypeId	GetTypeId ()
	Get the type ID.

Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId ()
	Register this type.

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

Static Public Attributes
static const uint8_t	PROT_NUMBER = 6
	protocol number (0x6)

Protected Member Functions
void	DoDispose () override
	Destructor implementation.

void	NoEndPointsFound (const TcpHeader &incomingHeader, const Address &incomingSAddr, const Address &incomingDAddr)
	Check if RST packet should be sent, and in case, send it.

void	NotifyNewAggregate () override
	Setup socket factory and callbacks when aggregated to a node.

IpL4Protocol::RxStatus	PacketReceived (Ptr< Packet > packet, TcpHeader &incomingTcpHeader, const Address &source, const Address &destination)
	Get the tcp header of the incoming packet and checks its checksum if needed.

Protected Member Functions inherited from ns3::Object
	Object (const Object &o)
	Copy an Object.

virtual void	DoInitialize ()
	Initialize() implementation.

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.

Private Member Functions
void	SendPacketV4 (Ptr< Packet > pkt, const TcpHeader &outgoing, const Ipv4Address &saddr, const Ipv4Address &daddr, Ptr< NetDevice > oif=nullptr) const
	Send a packet via TCP (IPv4)

void	SendPacketV6 (Ptr< Packet > pkt, const TcpHeader &outgoing, const Ipv6Address &saddr, const Ipv6Address &daddr, Ptr< NetDevice > oif=nullptr) const
	Send a packet via TCP (IPv6)

Private Attributes
TypeId	m_congestionTypeId
	The socket TypeId.

IpL4Protocol::DownTargetCallback	m_downTarget
	Callback to send packets over IPv4.

IpL4Protocol::DownTargetCallback6	m_downTarget6
	Callback to send packets over IPv6.

Ipv4EndPointDemux *	m_endPoints
	A list of IPv4 end points.

Ipv6EndPointDemux *	m_endPoints6
	A list of IPv6 end points.

Ptr< Node >	m_node
	the node this stack is associated with

TypeId	m_recoveryTypeId
	The recovery TypeId.

TypeId	m_rttTypeId
	The RTT Estimator TypeId.

uint64_t	m_socketIndex {0}
	index of the next socket to be created

std::unordered_map< uint64_t, Ptr< TcpSocketBase > >	m_sockets
	Unordered map of socket IDs and corresponding sockets.

Additional Inherited Members
Public Types inherited from ns3::IpL4Protocol
typedef Callback< void, Ptr< Packet >, Ipv4Address, Ipv4Address, uint8_t, Ptr< Ipv4Route > >	DownTargetCallback
	callback to send packets over IPv4

typedef Callback< void, Ptr< Packet >, Ipv6Address, Ipv6Address, uint8_t, Ptr< Ipv6Route > >	DownTargetCallback6
	callback to send packets over IPv6

enum	RxStatus { RX_OK , RX_CSUM_FAILED , RX_ENDPOINT_CLOSED , RX_ENDPOINT_UNREACH }
	Rx status codes. More...

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

TCP socket creation and multiplexing/demultiplexing.

A single instance of this class is held by one instance of class Node.

The creation of TcpSocket are handled in the method CreateSocket, which is called by TcpSocketFactory. Upon creation, this class is responsible to the socket initialization and handle multiplexing/demultiplexing of data between node's TCP sockets. Demultiplexing is done by receiving packets from IP, and forwards them up to the right socket. Multiplexing is done through the SendPacket function, which sends the packet down the stack.

Moreover, this class allocates "endpoint" objects (ns3::Ipv4EndPoint) for TCP, and SHOULD checksum packets its receives from the socket layer going down the stack, but currently checksumming is disabled.

See also: CreateSocket; NotifyNewAggregate; SendPacket

Definition at line 69 of file tcp-l4-protocol.h.

Constructor & Destructor Documentation

◆ TcpL4Protocol() [1/2]

ns3::TcpL4Protocol::TcpL4Protocol ( )

Definition at line 95 of file tcp-l4-protocol.cc.

References NS_LOG_FUNCTION.

◆ ~TcpL4Protocol()

ns3::TcpL4Protocol::~TcpL4Protocol ( )

override

Definition at line 102 of file tcp-l4-protocol.cc.

References NS_LOG_FUNCTION.

◆ TcpL4Protocol() [2/2]

ns3::TcpL4Protocol::TcpL4Protocol ( const TcpL4Protocol & )

delete

Member Function Documentation

◆ AddSocket()

void ns3::TcpL4Protocol::AddSocket ( Ptr< TcpSocketBase > socket )

Make a socket fully operational.

Called after a socket has been bound, it is inserted in an internal vector.

Parameters

socket Socket to be added

Definition at line 740 of file tcp-l4-protocol.cc.

References m_socketIndex, m_sockets, and NS_LOG_FUNCTION.

◆ Allocate() [1/5]

Ipv4EndPoint * ns3::TcpL4Protocol::Allocate ( )

Allocate an IPv4 Endpoint.

Returns: the Endpoint

Definition at line 220 of file tcp-l4-protocol.cc.

References ns3::Ipv4EndPointDemux::Allocate(), m_endPoints, and NS_LOG_FUNCTION.

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◆ Allocate() [2/5]

Ipv4EndPoint * ns3::TcpL4Protocol::Allocate ( Ipv4Address address )

Allocate an IPv4 Endpoint.

Parameters

address address to use

Returns: the Endpoint

Definition at line 227 of file tcp-l4-protocol.cc.

References ns3::Ipv4EndPointDemux::Allocate(), m_endPoints, and NS_LOG_FUNCTION.

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◆ Allocate() [3/5]

Ipv4EndPoint * ns3::TcpL4Protocol::Allocate	(	Ptr< NetDevice >	boundNetDevice,
		Ipv4Address	address,
		uint16_t	port )

Allocate an IPv4 Endpoint.

Parameters

boundNetDevice	Bound NetDevice (if any)
address	address to use
port	port to use

Returns: the Endpoint

Definition at line 241 of file tcp-l4-protocol.cc.

References ns3::Ipv4EndPointDemux::Allocate(), m_endPoints, NS_LOG_FUNCTION, and port.

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◆ Allocate() [4/5]

Ipv4EndPoint * ns3::TcpL4Protocol::Allocate	(	Ptr< NetDevice >	boundNetDevice,
		Ipv4Address	localAddress,
		uint16_t	localPort,
		Ipv4Address	peerAddress,
		uint16_t	peerPort )

Allocate an IPv4 Endpoint.

Parameters

boundNetDevice	Bound NetDevice (if any)
localAddress	local address to use
localPort	local port to use
peerAddress	remote address to use
peerPort	remote port to use

Returns: the Endpoint

Definition at line 248 of file tcp-l4-protocol.cc.

References ns3::Ipv4EndPointDemux::Allocate(), m_endPoints, and NS_LOG_FUNCTION.

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◆ Allocate() [5/5]

Ipv4EndPoint * ns3::TcpL4Protocol::Allocate	(	Ptr< NetDevice >	boundNetDevice,
		uint16_t	port )

Allocate an IPv4 Endpoint.

Parameters

boundNetDevice	Bound NetDevice (if any)
port	port to use

Returns: the Endpoint

Definition at line 234 of file tcp-l4-protocol.cc.

References ns3::Ipv4EndPointDemux::Allocate(), m_endPoints, NS_LOG_FUNCTION, and port.

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◆ Allocate6() [1/5]

Ipv6EndPoint * ns3::TcpL4Protocol::Allocate6 ( )

Allocate an IPv6 Endpoint.

Returns: the Endpoint

Definition at line 266 of file tcp-l4-protocol.cc.

References ns3::Ipv6EndPointDemux::Allocate(), m_endPoints6, and NS_LOG_FUNCTION.

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◆ Allocate6() [2/5]

Ipv6EndPoint * ns3::TcpL4Protocol::Allocate6 ( Ipv6Address address )

Allocate an IPv6 Endpoint.

Parameters

address address to use

Returns: the Endpoint

Definition at line 273 of file tcp-l4-protocol.cc.

References ns3::Ipv6EndPointDemux::Allocate(), m_endPoints6, and NS_LOG_FUNCTION.

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◆ Allocate6() [3/5]

Ipv6EndPoint * ns3::TcpL4Protocol::Allocate6	(	Ptr< NetDevice >	boundNetDevice,
		Ipv6Address	address,
		uint16_t	port )

Allocate an IPv6 Endpoint.

Parameters

boundNetDevice	Bound NetDevice (if any)
address	address to use
port	port to use

Returns: the Endpoint

Definition at line 287 of file tcp-l4-protocol.cc.

References ns3::Ipv6EndPointDemux::Allocate(), m_endPoints6, NS_LOG_FUNCTION, and port.

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◆ Allocate6() [4/5]

Ipv6EndPoint * ns3::TcpL4Protocol::Allocate6	(	Ptr< NetDevice >	boundNetDevice,
		Ipv6Address	localAddress,
		uint16_t	localPort,
		Ipv6Address	peerAddress,
		uint16_t	peerPort )

Allocate an IPv6 Endpoint.

Parameters

boundNetDevice	Bound NetDevice (if any)
localAddress	local address to use
localPort	local port to use
peerAddress	remote address to use
peerPort	remote port to use

Returns: the Endpoint

Definition at line 294 of file tcp-l4-protocol.cc.

References ns3::Ipv6EndPointDemux::Allocate(), m_endPoints6, and NS_LOG_FUNCTION.

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◆ Allocate6() [5/5]

Ipv6EndPoint * ns3::TcpL4Protocol::Allocate6	(	Ptr< NetDevice >	boundNetDevice,
		uint16_t	port )

Allocate an IPv6 Endpoint.

Parameters

boundNetDevice	Bound NetDevice (if any)
port	port to use

Returns: the Endpoint

Definition at line 280 of file tcp-l4-protocol.cc.

References ns3::Ipv6EndPointDemux::Allocate(), m_endPoints6, NS_LOG_FUNCTION, and port.

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◆ CreateSocket() [1/3]

Ptr< Socket > ns3::TcpL4Protocol::CreateSocket ( )

Create a TCP socket using the TypeId set by SocketType attribute.

Returns: A smart Socket pointer to a TcpSocket allocated by this instance of the TCP protocol

Definition at line 214 of file tcp-l4-protocol.cc.

References CreateSocket(), m_congestionTypeId, and m_recoveryTypeId.

Referenced by CreateSocket(), and CreateSocket().

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◆ CreateSocket() [2/3]

Ptr< Socket > ns3::TcpL4Protocol::CreateSocket ( TypeId congestionTypeId )

Create a TCP socket using the specified congestion control algorithm.

Returns: A smart Socket pointer to a TcpSocket allocated by this instance of the TCP protocol

Parameters

congestionTypeId the congestion control algorithm TypeId

Definition at line 182 of file tcp-l4-protocol.cc.

References CreateSocket(), and m_recoveryTypeId.

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◆ CreateSocket() [3/3]

Ptr< Socket > ns3::TcpL4Protocol::CreateSocket	(	TypeId	congestionTypeId,
		TypeId	recoveryTypeId )

Create a TCP socket using the specified congestion control algorithm TypeId.

Returns: A smart Socket pointer to a TcpSocket allocated by this instance of the TCP protocol

Warning: using a congestionTypeId other than TCP is a bad idea.

Parameters

congestionTypeId	the congestion control algorithm TypeId
recoveryTypeId	the recovery algorithm TypeId

Definition at line 188 of file tcp-l4-protocol.cc.

References ns3::ObjectFactory::Create(), ns3::CreateObject(), ns3::TypeId::GetName(), m_node, m_rttTypeId, m_socketIndex, m_sockets, NS_LOG_FUNCTION, and ns3::ObjectFactory::SetTypeId().

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◆ DeAllocate() [1/2]

void ns3::TcpL4Protocol::DeAllocate ( Ipv4EndPoint * endPoint )

Remove an IPv4 Endpoint.

Parameters

endPoint the end point to remove

Definition at line 259 of file tcp-l4-protocol.cc.

References ns3::Ipv4EndPointDemux::DeAllocate(), m_endPoints, and NS_LOG_FUNCTION.

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◆ DeAllocate() [2/2]

void ns3::TcpL4Protocol::DeAllocate ( Ipv6EndPoint * endPoint )

Remove an IPv6 Endpoint.

Parameters

endPoint the end point to remove

Definition at line 305 of file tcp-l4-protocol.cc.

References ns3::Ipv6EndPointDemux::DeAllocate(), m_endPoints6, and NS_LOG_FUNCTION.

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◆ DoDispose()

void ns3::TcpL4Protocol::DoDispose ( )

overrideprotectedvirtual

Destructor implementation.

This method is called by Dispose() or by the Object's destructor, whichever comes first.

Subclasses are expected to implement their real destruction code in an overridden version of this method and chain up to their parent's implementation once they are done. i.e, for simplicity, the destructor of every subclass should be empty and its content should be moved to the associated DoDispose() method.

It is safe to call GetObject() from within this method.

Reimplemented from ns3::Object.

Definition at line 158 of file tcp-l4-protocol.cc.

References ns3::Object::DoDispose(), m_downTarget, m_downTarget6, m_endPoints, m_endPoints6, m_node, m_sockets, NS_LOG_FUNCTION, and ns3::Callback< R, UArgs >::Nullify().

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◆ GetDownTarget()

IpL4Protocol::DownTargetCallback ns3::TcpL4Protocol::GetDownTarget ( ) const

overridevirtual

This method allows a caller to get the current down target callback set for this L4 protocol (IPv4 case)

Returns: current Callback for the L4 protocol

Implements ns3::IpL4Protocol.

Definition at line 779 of file tcp-l4-protocol.cc.

References m_downTarget.

◆ GetDownTarget6()

IpL4Protocol::DownTargetCallback6 ns3::TcpL4Protocol::GetDownTarget6 ( ) const

overridevirtual

This method allows a caller to get the current down target callback set for this L4 protocol (IPv6 case)

Returns: current Callback for the L4 protocol

Implements ns3::IpL4Protocol.

Definition at line 791 of file tcp-l4-protocol.cc.

References m_downTarget6.

◆ GetProtocolNumber()

int ns3::TcpL4Protocol::GetProtocolNumber ( ) const

overridevirtual

Returns the protocol number of this protocol.

Returns: the protocol number.

Implements ns3::IpL4Protocol.

Definition at line 152 of file tcp-l4-protocol.cc.

References PROT_NUMBER.

◆ GetTypeId()

TypeId ns3::TcpL4Protocol::GetTypeId ( )

static

Get the type ID.

Returns: the object TypeId

Definition at line 63 of file tcp-l4-protocol.cc.

References ns3::RttMeanDeviation::GetTypeId(), ns3::TcpCubic::GetTypeId(), ns3::TcpPrrRecovery::GetTypeId(), m_congestionTypeId, m_recoveryTypeId, m_rttTypeId, m_sockets, ns3::MakeObjectMapAccessor(), ns3::MakeObjectMapChecker(), ns3::MakeTypeIdAccessor(), ns3::MakeTypeIdChecker(), and ns3::TypeId::SetParent().

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◆ NoEndPointsFound()

void ns3::TcpL4Protocol::NoEndPointsFound	(	const TcpHeader &	incomingHeader,
		const Address &	incomingSAddr,
		const Address &	incomingDAddr )

protected

Check if RST packet should be sent, and in case, send it.

The function is called when no endpoint is found for the received packet. So TcpL4Protocol do not know to who the packet should be given to. An RST packet is sent out as reply unless the received packet has the RST flag set.

Parameters

incomingHeader	TCP header of the incoming packet
incomingSAddr	Source address of the incoming packet
incomingDAddr	Destination address of the incoming packet

Definition at line 408 of file tcp-l4-protocol.cc.

References ns3::TcpHeader::ACK, ns3::Create(), ns3::TcpHeader::GetAckNumber(), ns3::TcpHeader::GetDestinationPort(), ns3::TcpHeader::GetFlags(), ns3::TcpHeader::GetSequenceNumber(), ns3::TcpHeader::GetSourcePort(), NS_LOG_FUNCTION, ns3::TcpHeader::RST, SendPacket(), ns3::TcpHeader::SetAckNumber(), ns3::TcpHeader::SetDestinationPort(), ns3::TcpHeader::SetFlags(), ns3::TcpHeader::SetSequenceNumber(), and ns3::TcpHeader::SetSourcePort().

Referenced by Receive(), and Receive().

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◆ NotifyNewAggregate()

void ns3::TcpL4Protocol::NotifyNewAggregate ( )

overrideprotectedvirtual

Setup socket factory and callbacks when aggregated to a node.

This function will notify other components connected to the node that a new stack member is now connected. This will be used to notify Layer 3 protocol of layer 4 protocol stack to connect them together. The aggregation is completed by setting the node in the TCP stack, link it to the ipv4 or ipv6 stack and adding TCP socket factory to the node.

Reimplemented from ns3::Object.

Definition at line 115 of file tcp-l4-protocol.cc.

References ns3::CreateObject(), ns3::Object::GetObject(), ns3::Callback< R, UArgs >::IsNull(), m_downTarget, m_downTarget6, m_node, ns3::MakeCallback(), ns3::Object::NotifyNewAggregate(), NS_LOG_FUNCTION, ns3::Ipv4::Send(), ns3::Ipv6::Send(), SetDownTarget(), SetDownTarget6(), and SetNode().

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◆ operator=()

TcpL4Protocol & ns3::TcpL4Protocol::operator= ( const TcpL4Protocol & )

delete

◆ PacketReceived()

IpL4Protocol::RxStatus ns3::TcpL4Protocol::PacketReceived	(	Ptr< Packet >	packet,
		TcpHeader &	incomingTcpHeader,
		const Address &	source,
		const Address &	destination )

protected

Get the tcp header of the incoming packet and checks its checksum if needed.

Parameters

packet	Received packet
incomingTcpHeader	Overwritten with the tcp header of the packet
source	Source address (an underlying Ipv4Address or Ipv6Address)
destination	Destination address (an underlying Ipv4Address or Ipv6Address)

Returns: RX_CSUM_FAILED if the checksum check fails, RX_OK otherwise

Definition at line 377 of file tcp-l4-protocol.cc.

References ns3::Node::ChecksumEnabled(), ns3::TcpHeader::EnableChecksums(), ns3::TcpHeader::FlagsToString(), ns3::TcpHeader::GetAckNumber(), ns3::TcpHeader::GetFlags(), ns3::TcpHeader::GetSequenceNumber(), ns3::TcpHeader::InitializeChecksum(), ns3::TcpHeader::IsChecksumOk(), NS_LOG_FUNCTION, NS_LOG_INFO, NS_LOG_LOGIC, PROT_NUMBER, ns3::IpL4Protocol::RX_CSUM_FAILED, and ns3::IpL4Protocol::RX_OK.

Referenced by Receive(), and Receive().

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◆ Receive() [1/2]

IpL4Protocol::RxStatus ns3::TcpL4Protocol::Receive	(	Ptr< Packet >	p,
		const Ipv4Header &	header,
		Ptr< Ipv4Interface >	incomingInterface )

overridevirtual

Called from lower-level layers to send the packet up in the stack.

Parameters

p	packet to forward up
header	IPv4 Header information
incomingInterface	the Ipv4Interface on which the packet arrived

Returns: Rx status code

Implements ns3::IpL4Protocol.

Definition at line 445 of file tcp-l4-protocol.cc.

References ns3::Ipv4Header::GetDestination(), ns3::TcpHeader::GetDestinationPort(), ns3::Object::GetObject(), ns3::Ipv4Header::GetSource(), ns3::TcpHeader::GetSourcePort(), ns3::Ipv4EndPointDemux::Lookup(), m_endPoints, ns3::Ipv6Address::MakeIpv4MappedAddress(), NoEndPointsFound(), NS_ASSERT_MSG, NS_LOG_FUNCTION, NS_LOG_LOGIC, PacketReceived(), Receive(), ns3::IpL4Protocol::RX_ENDPOINT_CLOSED, ns3::IpL4Protocol::RX_OK, ns3::Ipv6Header::SetDestination(), and ns3::Ipv6Header::SetSource().

Referenced by Receive().

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◆ Receive() [2/2]

IpL4Protocol::RxStatus ns3::TcpL4Protocol::Receive	(	Ptr< Packet >	p,
		const Ipv6Header &	header,
		Ptr< Ipv6Interface >	incomingInterface )

overridevirtual

Called from lower-level layers to send the packet up in the stack.

Parameters

p	packet to forward up
header	IPv6 Header information
incomingInterface	the Ipv6Interface on which the packet arrived

Returns: Rx status code

Implements ns3::IpL4Protocol.

Definition at line 516 of file tcp-l4-protocol.cc.

References ns3::Ipv6Header::GetDestination(), ns3::TcpHeader::GetDestinationPort(), ns3::Ipv6Header::GetSource(), ns3::TcpHeader::GetSourcePort(), ns3::Ipv6EndPointDemux::Lookup(), m_endPoints6, NoEndPointsFound(), NS_ASSERT_MSG, NS_LOG_FUNCTION, NS_LOG_LOGIC, PacketReceived(), ns3::IpL4Protocol::RX_ENDPOINT_CLOSED, and ns3::IpL4Protocol::RX_OK.

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◆ ReceiveIcmp() [1/2]

void ns3::TcpL4Protocol::ReceiveIcmp	(	Ipv4Address	icmpSource,
		uint8_t	icmpTtl,
		uint8_t	icmpType,
		uint8_t	icmpCode,
		uint32_t	icmpInfo,
		Ipv4Address	payloadSource,
		Ipv4Address	payloadDestination,
		const uint8_t	payload[8] )

overridevirtual

Called from lower-level layers to send the ICMP packet up in the stack.

Parameters

icmpSource	the source address of the icmp message
icmpTtl	the ttl of the icmp message
icmpType	the 'type' field of the icmp message
icmpCode	the 'code' field of the icmp message
icmpInfo	extra information dependent on the icmp message generated by Icmpv4L4Protocol
payloadSource	the source address of the packet which triggered the icmp message
payloadDestination	the destination address of the packet which triggered the icmp message.
payload	the first 8 bytes of the packet payload which triggered the icmp message.

Reimplemented from ns3::IpL4Protocol.

Definition at line 312 of file tcp-l4-protocol.cc.

References ns3::Ipv4EndPoint::ForwardIcmp(), m_endPoints, NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::Ipv4EndPointDemux::SimpleLookup().

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◆ ReceiveIcmp() [2/2]

void ns3::TcpL4Protocol::ReceiveIcmp	(	Ipv6Address	icmpSource,
		uint8_t	icmpTtl,
		uint8_t	icmpType,
		uint8_t	icmpCode,
		uint32_t	icmpInfo,
		Ipv6Address	payloadSource,
		Ipv6Address	payloadDestination,
		const uint8_t	payload[8] )

overridevirtual

Called from lower-level layers to send the ICMPv6 packet up in the stack.

Parameters

icmpSource	the source address of the icmp message
icmpTtl	the ttl of the icmp message
icmpType	the 'type' field of the icmp message
icmpCode	the 'code' field of the icmp message
icmpInfo	extra information dependent on the icmp message generated by Icmpv6L4Protocol
payloadSource	the source address of the packet which triggered the icmp message
payloadDestination	the destination address of the packet which triggered the icmp message.
payload	the first 8 bytes of the packet payload which triggered the icmp message.

Reimplemented from ns3::IpL4Protocol.

Definition at line 344 of file tcp-l4-protocol.cc.

References ns3::Ipv6EndPoint::ForwardIcmp(), m_endPoints6, NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::Ipv6EndPointDemux::SimpleLookup().

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◆ RemoveSocket()

bool ns3::TcpL4Protocol::RemoveSocket ( Ptr< TcpSocketBase > socket )

Remove a socket from the internal list.

Parameters

socket socket to Remove

Returns: true if the socket has been removed

Definition at line 755 of file tcp-l4-protocol.cc.

References m_sockets, and NS_LOG_FUNCTION.

◆ SendPacket()

void ns3::TcpL4Protocol::SendPacket	(	Ptr< Packet >	pkt,
		const TcpHeader &	outgoing,
		const Address &	saddr,
		const Address &	daddr,
		Ptr< NetDevice >	oif = nullptr ) const

Send a packet via TCP (IP-agnostic)

Parameters

pkt	The packet to send
outgoing	The packet header
saddr	The source Ipv4Address
daddr	The destination Ipv4Address
oif	The output interface bound. Defaults to null (unspecified).

Definition at line 686 of file tcp-l4-protocol.cc.

References ns3::Inet6SocketAddress::ConvertFrom(), ns3::InetSocketAddress::ConvertFrom(), ns3::Ipv4Address::ConvertFrom(), ns3::Ipv6Address::ConvertFrom(), ns3::InetSocketAddress::GetIpv4(), ns3::Inet6SocketAddress::GetIpv6(), ns3::Inet6SocketAddress::IsMatchingType(), ns3::InetSocketAddress::IsMatchingType(), ns3::Ipv4Address::IsMatchingType(), ns3::Ipv6Address::IsMatchingType(), NS_ASSERT, NS_FATAL_ERROR, NS_LOG_FUNCTION, SendPacketV4(), and SendPacketV6().

Referenced by NoEndPointsFound(), and SendPacketV6().

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◆ SendPacketV4()

void ns3::TcpL4Protocol::SendPacketV4	(	Ptr< Packet >	pkt,
		const TcpHeader &	outgoing,
		const Ipv4Address &	saddr,
		const Ipv4Address &	daddr,
		Ptr< NetDevice >	oif = nullptr ) const

private

Send a packet via TCP (IPv4)

Parameters

pkt	The packet to send
outgoing	The packet header
saddr	The source Ipv4Address
daddr	The destination Ipv4Address
oif	The output interface bound. Defaults to null (unspecified).

Todo: UrgentPointer

Definition at line 576 of file tcp-l4-protocol.cc.

References ns3::Node::ChecksumEnabled(), ns3::TcpHeader::EnableChecksums(), ns3::TcpHeader::FlagsToString(), ns3::TcpHeader::GetAckNumber(), ns3::TcpHeader::GetFlags(), ns3::Object::GetObject(), ns3::TcpHeader::GetSequenceNumber(), ns3::TcpHeader::InitializeChecksum(), m_downTarget, m_node, NS_FATAL_ERROR, NS_LOG_ERROR, NS_LOG_FUNCTION, NS_LOG_LOGIC, PROT_NUMBER, ns3::Ipv4Header::SetDestination(), ns3::Ipv4Header::SetProtocol(), and ns3::Ipv4Header::SetSource().

Referenced by SendPacket().

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◆ SendPacketV6()

void ns3::TcpL4Protocol::SendPacketV6	(	Ptr< Packet >	pkt,
		const TcpHeader &	outgoing,
		const Ipv6Address &	saddr,
		const Ipv6Address &	daddr,
		Ptr< NetDevice >	oif = nullptr ) const

private

Send a packet via TCP (IPv6)

Parameters

pkt	The packet to send
outgoing	The packet header
saddr	The source Ipv4Address
daddr	The destination Ipv4Address
oif	The output interface bound. Defaults to null (unspecified).

Todo: UrgentPointer

Definition at line 627 of file tcp-l4-protocol.cc.

References ns3::Node::ChecksumEnabled(), ns3::TcpHeader::EnableChecksums(), ns3::TcpHeader::FlagsToString(), ns3::TcpHeader::GetAckNumber(), ns3::TcpHeader::GetFlags(), ns3::Ipv6Address::GetIpv4MappedAddress(), ns3::Object::GetObject(), ns3::TcpHeader::GetSequenceNumber(), ns3::TcpHeader::InitializeChecksum(), ns3::Ipv6Address::IsIpv4MappedAddress(), m_downTarget6, m_node, NS_FATAL_ERROR, NS_LOG_ERROR, NS_LOG_FUNCTION, NS_LOG_LOGIC, PROT_NUMBER, SendPacket(), ns3::Ipv6Header::SetDestination(), ns3::Ipv6Header::SetNextHeader(), and ns3::Ipv6Header::SetSource().

Referenced by SendPacket().

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◆ SetDownTarget()

void ns3::TcpL4Protocol::SetDownTarget ( IpL4Protocol::DownTargetCallback cb )

overridevirtual

This method allows a caller to set the current down target callback set for this L4 protocol (IPv4 case)

Parameters

cb	current Callback for the L4 protocol

Implements ns3::IpL4Protocol.

Definition at line 773 of file tcp-l4-protocol.cc.

References m_downTarget.

Referenced by NotifyNewAggregate().

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◆ SetDownTarget6()

void ns3::TcpL4Protocol::SetDownTarget6 ( IpL4Protocol::DownTargetCallback6 cb )

overridevirtual

This method allows a caller to set the current down target callback set for this L4 protocol (IPv6 case)

Parameters

cb	current Callback for the L4 protocol

Implements ns3::IpL4Protocol.

Definition at line 785 of file tcp-l4-protocol.cc.

References m_downTarget6.

Referenced by NotifyNewAggregate().

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◆ SetNode()

void ns3::TcpL4Protocol::SetNode ( Ptr< Node > node )

Set node associated with this stack.

Parameters

node the node

Definition at line 108 of file tcp-l4-protocol.cc.

References m_node, and NS_LOG_FUNCTION.

Referenced by NotifyNewAggregate().

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Member Data Documentation

◆ m_congestionTypeId

TypeId ns3::TcpL4Protocol::m_congestionTypeId

private

The socket TypeId.

Definition at line 331 of file tcp-l4-protocol.h.

Referenced by CreateSocket(), and GetTypeId().

◆ m_downTarget

IpL4Protocol::DownTargetCallback ns3::TcpL4Protocol::m_downTarget

private

Callback to send packets over IPv4.

Definition at line 336 of file tcp-l4-protocol.h.

Referenced by DoDispose(), GetDownTarget(), NotifyNewAggregate(), SendPacketV4(), and SetDownTarget().

◆ m_downTarget6

IpL4Protocol::DownTargetCallback6 ns3::TcpL4Protocol::m_downTarget6

private

Callback to send packets over IPv6.

Definition at line 337 of file tcp-l4-protocol.h.

Referenced by DoDispose(), GetDownTarget6(), NotifyNewAggregate(), SendPacketV6(), and SetDownTarget6().

◆ m_endPoints

Ipv4EndPointDemux* ns3::TcpL4Protocol::m_endPoints

private

A list of IPv4 end points.

Definition at line 328 of file tcp-l4-protocol.h.

Referenced by Allocate(), Allocate(), Allocate(), Allocate(), Allocate(), DeAllocate(), DoDispose(), Receive(), and ReceiveIcmp().

◆ m_endPoints6

Ipv6EndPointDemux* ns3::TcpL4Protocol::m_endPoints6

private

A list of IPv6 end points.

Definition at line 329 of file tcp-l4-protocol.h.

Referenced by Allocate6(), Allocate6(), Allocate6(), Allocate6(), Allocate6(), DeAllocate(), DoDispose(), Receive(), and ReceiveIcmp().

◆ m_node

Ptr<Node> ns3::TcpL4Protocol::m_node

private

the node this stack is associated with

Definition at line 327 of file tcp-l4-protocol.h.

Referenced by CreateSocket(), DoDispose(), NotifyNewAggregate(), SendPacketV4(), SendPacketV6(), and SetNode().

◆ m_recoveryTypeId

TypeId ns3::TcpL4Protocol::m_recoveryTypeId

private

The recovery TypeId.

Definition at line 332 of file tcp-l4-protocol.h.

Referenced by CreateSocket(), CreateSocket(), and GetTypeId().

◆ m_rttTypeId

TypeId ns3::TcpL4Protocol::m_rttTypeId

private

The RTT Estimator TypeId.

Definition at line 330 of file tcp-l4-protocol.h.

Referenced by CreateSocket(), and GetTypeId().

◆ m_socketIndex

uint64_t ns3::TcpL4Protocol::m_socketIndex {0}

private

index of the next socket to be created

Definition at line 335 of file tcp-l4-protocol.h.

Referenced by AddSocket(), and CreateSocket().

◆ m_sockets

std::unordered_map<uint64_t, Ptr<TcpSocketBase> > ns3::TcpL4Protocol::m_sockets

private

Unordered map of socket IDs and corresponding sockets.

Definition at line 334 of file tcp-l4-protocol.h.

Referenced by AddSocket(), CreateSocket(), DoDispose(), GetTypeId(), and RemoveSocket().

◆ PROT_NUMBER

const uint8_t ns3::TcpL4Protocol::PROT_NUMBER = 6

static

protocol number (0x6)

Definition at line 77 of file tcp-l4-protocol.h.

Referenced by ns3::OpenFlowSwitchNetDevice::BufferFromPacket(), ns3::EpcTftClassifier::Classify(), ns3::IpcsClassifier::Classify(), GetProtocolNumber(), PacketReceived(), SendPacketV4(), and SendPacketV6().

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

src/internet/model/tcp-l4-protocol.h
src/internet/model/tcp-l4-protocol.cc

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ TcpL4Protocol() [1/2]

◆ ~TcpL4Protocol()

◆ TcpL4Protocol() [2/2]

Member Function Documentation

◆ AddSocket()

◆ Allocate() [1/5]

◆ Allocate() [2/5]

◆ Allocate() [3/5]

◆ Allocate() [4/5]

◆ Allocate() [5/5]

◆ Allocate6() [1/5]

◆ Allocate6() [2/5]

◆ Allocate6() [3/5]

◆ Allocate6() [4/5]

◆ Allocate6() [5/5]

◆ CreateSocket() [1/3]

◆ CreateSocket() [2/3]

◆ CreateSocket() [3/3]

◆ DeAllocate() [1/2]

◆ DeAllocate() [2/2]

◆ DoDispose()

◆ GetDownTarget()

◆ GetDownTarget6()

◆ GetProtocolNumber()

◆ GetTypeId()

◆ NoEndPointsFound()

◆ NotifyNewAggregate()

◆ operator=()

◆ PacketReceived()

◆ Receive() [1/2]

◆ Receive() [2/2]

◆ ReceiveIcmp() [1/2]

◆ ReceiveIcmp() [2/2]

◆ RemoveSocket()

◆ SendPacket()

◆ SendPacketV4()

◆ SendPacketV6()

◆ SetDownTarget()

◆ SetDownTarget6()

◆ SetNode()

Member Data Documentation

◆ m_congestionTypeId

◆ m_downTarget

◆ m_downTarget6

◆ m_endPoints

◆ m_endPoints6

◆ m_node

◆ m_recoveryTypeId

◆ m_rttTypeId

◆ m_socketIndex

◆ m_sockets

◆ PROT_NUMBER