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 ()

virtual	~TcpL4Protocol ()

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

Ipv4EndPoint *	Allocate (void)
	Allocate an IPv4 Endpoint. More...

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

Ipv4EndPoint *	Allocate (uint16_t port)
	Allocate an IPv4 Endpoint. More...

Ipv4EndPoint *	Allocate (Ipv4Address address, uint16_t port)
	Allocate an IPv4 Endpoint. More...

Ipv4EndPoint *	Allocate (Ipv4Address localAddress, uint16_t localPort, Ipv4Address peerAddress, uint16_t peerPort)
	Allocate an IPv4 Endpoint. More...

Ipv6EndPoint *	Allocate6 (void)
	Allocate an IPv6 Endpoint. More...

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

Ipv6EndPoint *	Allocate6 (uint16_t port)
	Allocate an IPv6 Endpoint. More...

Ipv6EndPoint *	Allocate6 (Ipv6Address address, uint16_t port)
	Allocate an IPv6 Endpoint. More...

Ipv6EndPoint *	Allocate6 (Ipv6Address localAddress, uint16_t localPort, Ipv6Address peerAddress, uint16_t peerPort)
	Allocate an IPv6 Endpoint. More...

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

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

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

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

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

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

virtual int	GetProtocolNumber (void) const
	Returns the protocol number of this protocol. More...

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

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

virtual 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])
	Called from lower-level layers to send the ICMP packet up in the stack. More...

virtual 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])
	Called from lower-level layers to send the ICMPv6 packet up in the stack. More...

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

void	SendPacket (Ptr< Packet > pkt, const TcpHeader &outgoing, const Address &saddr, const Address &daddr, Ptr< NetDevice > oif=0) const
	Send a packet via TCP (IP-agnostic) More...

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

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

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

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

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

virtual	~Object ()
	Destructor. More...

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

void	Dispose (void)
	Dispose of this Object. More...

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

virtual TypeId	GetInstanceTypeId (void) const
	Implement the GetInstanceTypeId method defined in ObjectBase. More...

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

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

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

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

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

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor. More...

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

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

void	Ref (void) const
	Increment the reference count. More...

void	Unref (void) const
	Decrement the reference count. 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 TypeId	GetTypeId (void)
	Get the type ID. More...

Static Public Member Functions inherited from ns3::IpL4Protocol
static TypeId	GetTypeId (void)
	Get the type ID. More...

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

Static Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
static void	Cleanup (void)
	Noop. More...

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

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

Protected Member Functions
virtual void	DoDispose (void)
	Destructor implementation. More...

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

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

enum 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. More...

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

virtual void	DoInitialize (void)
	Initialize() implementation. More...

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...

Private Member Functions
	TcpL4Protocol (const TcpL4Protocol &)
	Copy constructor. More...

TcpL4Protocol &	operator= (const TcpL4Protocol &)
	Copy constructor. More...

void	SendPacketV4 (Ptr< Packet > pkt, const TcpHeader &outgoing, const Ipv4Address &saddr, const Ipv4Address &daddr, Ptr< NetDevice > oif=0) const
	Send a packet via TCP (IPv4) More...

void	SendPacketV6 (Ptr< Packet > pkt, const TcpHeader &outgoing, const Ipv6Address &saddr, const Ipv6Address &daddr, Ptr< NetDevice > oif=0) const
	Send a packet via TCP (IPv6) More...

Private Attributes
TypeId	m_congestionTypeId
	The socket TypeId. More...

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

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

Ipv4EndPointDemux *	m_endPoints
	A list of IPv4 end points. More...

Ipv6EndPointDemux *	m_endPoints6
	A list of IPv6 end points. More...

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

TypeId	m_rttTypeId
	The RTT Estimator TypeId. More...

std::vector< Ptr< TcpSocketBase > >	m_sockets
	list of sockets More...

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 More...

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

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

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

Config Paths

ns3::TcpL4Protocol is accessible through the following paths with Config::Set and Config::Connect:

"/NodeList/[i]/$ns3::TcpL4Protocol"

Attributes

RttEstimatorType: Type of RttEstimator objects.
- Set with class: TypeIdValue
- Underlying type: TypeId
- Initial value: ns3::RttMeanDeviation
- Flags: construct write read
SocketType: Socket type of TCP objects.
- Set with class: TypeIdValue
- Underlying type: TypeId
- Initial value: ns3::TcpNewReno
- Flags: construct write read
SocketList: The list of sockets associated to this protocol.
- Set with class: ns3::ObjectPtrContainerValue
- Underlying type: ns3::Ptr< ns3::TcpSocketBase>
- Flags: read

Attributes defined in parent class ns3::IpL4Protocol

ProtocolNumber: The IP protocol number.
- Set with class: ns3::IntegerValue
- Underlying type: int32_t 0:255
- Flags: read

No TraceSources are defined for this type.
Size of this type is 104 bytes (on a 64-bit architecture).

Definition at line 80 of file tcp-l4-protocol.h.

Constructor & Destructor Documentation

ns3::TcpL4Protocol::TcpL4Protocol ( )

Definition at line 91 of file tcp-l4-protocol.cc.

References NS_LOG_FUNCTION_NOARGS, and NS_LOG_LOGIC.

ns3::TcpL4Protocol::~TcpL4Protocol ( )

virtual

Definition at line 98 of file tcp-l4-protocol.cc.

References NS_LOG_FUNCTION.

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

private

Copy constructor.

Defined and not implemented to avoid misuse

Member Function Documentation

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 686 of file tcp-l4-protocol.cc.

References m_sockets, and NS_LOG_FUNCTION.

Ipv4EndPoint * ns3::TcpL4Protocol::Allocate ( void )

Allocate an IPv4 Endpoint.

Returns: the Endpoint

Definition at line 206 of file tcp-l4-protocol.cc.

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

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

Allocate an IPv4 Endpoint.

Parameters

address address to use

Returns: the Endpoint

Definition at line 213 of file tcp-l4-protocol.cc.

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

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Ipv4EndPoint * ns3::TcpL4Protocol::Allocate ( uint16_t port )

Allocate an IPv4 Endpoint.

Parameters

port	port to use

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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Ipv4EndPoint * ns3::TcpL4Protocol::Allocate	(	Ipv4Address	address,
		uint16_t	port
	)

Allocate an IPv4 Endpoint.

Parameters

address	address to use
port	port 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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Ipv4EndPoint * ns3::TcpL4Protocol::Allocate	(	Ipv4Address	localAddress,
		uint16_t	localPort,
		Ipv4Address	peerAddress,
		uint16_t	peerPort
	)

Allocate an IPv4 Endpoint.

Parameters

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 234 of file tcp-l4-protocol.cc.

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

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Ipv6EndPoint * ns3::TcpL4Protocol::Allocate6 ( void )

Allocate an IPv6 Endpoint.

Returns: the Endpoint

Definition at line 250 of file tcp-l4-protocol.cc.

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

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

Allocate an IPv6 Endpoint.

Parameters

address address to use

Returns: the Endpoint

Definition at line 257 of file tcp-l4-protocol.cc.

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

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Ipv6EndPoint * ns3::TcpL4Protocol::Allocate6 ( uint16_t port )

Allocate an IPv6 Endpoint.

Parameters

port	port to use

Returns: the Endpoint

Definition at line 264 of file tcp-l4-protocol.cc.

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

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Ipv6EndPoint * ns3::TcpL4Protocol::Allocate6	(	Ipv6Address	address,
		uint16_t	port
	)

Allocate an IPv6 Endpoint.

Parameters

address	address to use
port	port to use

Returns: the Endpoint

Definition at line 271 of file tcp-l4-protocol.cc.

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

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Ipv6EndPoint * ns3::TcpL4Protocol::Allocate6	(	Ipv6Address	localAddress,
		uint16_t	localPort,
		Ipv6Address	peerAddress,
		uint16_t	peerPort
	)

Allocate an IPv6 Endpoint.

Parameters

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 278 of file tcp-l4-protocol.cc.

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

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

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 200 of file tcp-l4-protocol.cc.

References m_congestionTypeId.

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

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

Definition at line 178 of file tcp-l4-protocol.cc.

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

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

Remove an IPv4 Endpoint.

Parameters

endPoint the end point to remove

Definition at line 243 of file tcp-l4-protocol.cc.

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

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

Remove an IPv6 Endpoint.

Parameters

endPoint the end point to remove

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

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

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void ns3::TcpL4Protocol::DoDispose ( void )

protectedvirtual

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 overriden 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 154 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, T1, T2, T3, T4, T5, T6, T7, T8, T9 >::Nullify().

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

virtual

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 731 of file tcp-l4-protocol.cc.

References m_downTarget.

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

virtual

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 743 of file tcp-l4-protocol.cc.

References m_downTarget6.

int ns3::TcpL4Protocol::GetProtocolNumber ( void ) const

virtual

Returns the protocol number of this protocol.

Returns: the protocol number.

Implements ns3::IpL4Protocol.

Definition at line 148 of file tcp-l4-protocol.cc.

References PROT_NUMBER.

TypeId ns3::TcpL4Protocol::GetTypeId ( void )

static

Get the type ID.

Returns: the object TypeId

Definition at line 67 of file tcp-l4-protocol.cc.

References ns3::RttMeanDeviation::GetTypeId(), ns3::TcpNewReno::GetTypeId(), m_congestionTypeId, m_rttTypeId, m_sockets, ns3::MakeObjectVectorAccessor(), ns3::MakeTypeIdAccessor(), ns3::MakeTypeIdChecker(), and ns3::TypeId::SetParent().

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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 377 of file tcp-l4-protocol.cc.

References ns3::TcpHeader::ACK, ns3::TcpHeader::GetAckNumber(), ns3::TcpHeader::GetDestinationPort(), ns3::TcpHeader::GetFlags(), ns3::TcpHeader::GetSequenceNumber(), ns3::TcpHeader::GetSourcePort(), NS_LOG_FUNCTION, ns3::TcpHeader::RST, SendPacket(), and ns3::TcpHeader::SetFlags().

Referenced by Receive().

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void ns3::TcpL4Protocol::NotifyNewAggregate ( void )

protectedvirtual

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 111 of file tcp-l4-protocol.cc.

References ns3::Object::AggregateObject(), ns3::Object::GetObject(), ns3::Callback< R, T1, T2, T3, T4, T5, T6, T7, T8, T9 >::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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TcpL4Protocol& ns3::TcpL4Protocol::operator= ( const TcpL4Protocol & )

private

Copy constructor.

Defined and not implemented to avoid misuse

Returns

enum 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 348 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::Packet::GetSize(), ns3::TcpHeader::InitializeChecksum(), ns3::TcpHeader::IsChecksumOk(), NS_LOG_FUNCTION, NS_LOG_INFO, NS_LOG_LOGIC, ns3::Packet::PeekHeader(), PROT_NUMBER, ns3::IpL4Protocol::RX_CSUM_FAILED, and ns3::IpL4Protocol::RX_OK.

Referenced by Receive().

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

virtual

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 414 of file tcp-l4-protocol.cc.

References ns3::Ipv4Header::GetDestination(), ns3::TcpHeader::GetDestinationPort(), 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(), ns3::IpL4Protocol::RX_ENDPOINT_CLOSED, ns3::IpL4Protocol::RX_OK, ns3::Ipv6Header::SetDestinationAddress(), and ns3::Ipv6Header::SetSourceAddress().

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

virtual

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 481 of file tcp-l4-protocol.cc.

References ns3::Ipv6Header::GetDestinationAddress(), ns3::Ipv6Header::GetSourceAddress(), 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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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]
	)

virtual

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 294 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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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]
	)

virtual

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 321 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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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 705 of file tcp-l4-protocol.cc.

References m_sockets, and NS_LOG_FUNCTION.

void ns3::TcpL4Protocol::SendPacket	(	Ptr< Packet >	pkt,
		const TcpHeader &	outgoing,
		const Address &	saddr,
		const Address &	daddr,
		Ptr< NetDevice >	oif = `0`
	)		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 640 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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void ns3::TcpL4Protocol::SendPacketV4	(	Ptr< Packet >	pkt,
		const TcpHeader &	outgoing,
		const Ipv4Address &	saddr,
		const Ipv4Address &	daddr,
		Ptr< NetDevice >	oif = `0`
	)		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 535 of file tcp-l4-protocol.cc.

References ns3::Packet::AddHeader(), ns3::Node::ChecksumEnabled(), ns3::TcpHeader::EnableChecksums(), ns3::TcpHeader::FlagsToString(), ns3::TcpHeader::GetAckNumber(), ns3::TcpHeader::GetFlags(), ns3::Object::GetObject(), ns3::TcpHeader::GetSequenceNumber(), ns3::Packet::GetSize(), 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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void ns3::TcpL4Protocol::SendPacketV6	(	Ptr< Packet >	pkt,
		const TcpHeader &	outgoing,
		const Ipv6Address &	saddr,
		const Ipv6Address &	daddr,
		Ptr< NetDevice >	oif = `0`
	)		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).