An implementation of a stream socket using TCP. More...

#include <tcp-reno.h>

Inheritance diagram for ns3::TcpReno:

Collaboration diagram for ns3::TcpReno:

Public Member Functions
	TcpReno (void)
	TcpReno (const TcpReno &sock)
virtual	~TcpReno (void)
virtual int	Connect (const Address &address)
virtual int	Listen (void)
Public Member Functions inherited from ns3::TcpSocketBase
	TcpSocketBase (void)
	TcpSocketBase (const TcpSocketBase &sock)
virtual	~TcpSocketBase (void)
virtual int	Bind (void)
virtual int	Bind (const Address &address)
virtual int	Bind6 (void)
	Allocate a local IPv6 endpoint for this socket.
virtual void	BindToNetDevice (Ptr< NetDevice > netdevice)
virtual int	Close (void)
virtual enum SocketErrno	GetErrno (void) const
virtual Ptr< Node >	GetNode (void) const
virtual uint32_t	GetRxAvailable (void) const
virtual enum SocketType	GetSocketType (void) const
virtual int	GetSockName (Address &address) const
virtual uint32_t	GetTxAvailable (void) const
virtual Ptr< Packet >	Recv (uint32_t maxSize, uint32_t flags)
virtual Ptr< Packet >	RecvFrom (uint32_t maxSize, uint32_t flags, Address &fromAddress)
virtual int	Send (Ptr< Packet > p, uint32_t flags)
virtual int	SendTo (Ptr< Packet > p, uint32_t flags, const Address &toAddress)
virtual void	SetNode (Ptr< Node > node)
virtual void	SetRtt (Ptr< RttEstimator > rtt)
virtual void	SetTcp (Ptr< TcpL4Protocol > tcp)
virtual int	ShutdownRecv (void)
virtual int	ShutdownSend (void)
Public Member Functions inherited from ns3::TcpSocket
	TcpSocket (void)
virtual	~TcpSocket (void)
Public Member Functions inherited from ns3::Socket
	Socket (void)
virtual	~Socket (void)
Ptr< NetDevice >	GetBoundNetDevice ()
	Returns socket's bound netdevice, if any.
bool	IsRecvPktInfo () const
	Get status indicating whether enable/disable packet information to socket.
Ptr< Packet >	Recv (void)
	Read a single packet from the socket.
int	Recv (uint8_t *buf, uint32_t size, uint32_t flags)
	Recv data (or dummy data) from the remote host.
Ptr< Packet >	RecvFrom (Address &fromAddress)
	Read a single packet from the socket and retrieve the sender address.
int	RecvFrom (uint8_t *buf, uint32_t size, uint32_t flags, Address &fromAddress)
	Read a single packet from the socket and retrieve the sender address.
int	Send (Ptr< Packet > p)
	Send data (or dummy data) to the remote host.
int	Send (const uint8_t *buf, uint32_t size, uint32_t flags)
	Send data (or dummy data) to the remote host.
int	SendTo (const uint8_t *buf, uint32_t size, uint32_t flags, const Address &address)
	Send data to a specified peer.
void	SetAcceptCallback (Callback< bool, Ptr< Socket >, const Address & > connectionRequest, Callback< void, Ptr< Socket >, const Address & > newConnectionCreated)
	Accept connection requests from remote hosts.
void	SetCloseCallbacks (Callback< void, Ptr< Socket > > normalClose, Callback< void, Ptr< Socket > > errorClose)
	Detect socket recv() events such as graceful shutdown or error.
void	SetConnectCallback (Callback< void, Ptr< Socket > > connectionSucceeded, Callback< void, Ptr< Socket > > connectionFailed)
	Specify callbacks to allow the caller to determine if the connection succeeds of fails.
void	SetDataSentCallback (Callback< void, Ptr< Socket >, uint32_t > dataSent)
	Notify application when a packet has been sent from transport protocol (non-standard socket call)
void	SetRecvCallback (Callback< void, Ptr< Socket > >)
	Notify application when new data is available to be read.
void	SetRecvPktInfo (bool flag)
	Enable/Disable receive packet information to socket.
void	SetSendCallback (Callback< void, Ptr< Socket >, uint32_t > sendCb)
	Notify application when space in transmit buffer is added.
Public Member Functions inherited from ns3::Object
	Object ()
virtual	~Object ()
void	AggregateObject (Ptr< Object > other)
void	Dispose (void)
AggregateIterator	GetAggregateIterator (void) const
virtual TypeId	GetInstanceTypeId (void) const
template<typename T >
Ptr< T >	GetObject (void) const
template<typename T >
Ptr< T >	GetObject (TypeId tid) const
void	Start (void)
Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	SimpleRefCount (const SimpleRefCount &o)
uint32_t	GetReferenceCount (void) const
SimpleRefCount &	operator= (const SimpleRefCount &o)
void	Ref (void) const
void	Unref (void) const
Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
void	GetAttribute (std::string name, AttributeValue &value) const
bool	GetAttributeFailSafe (std::string name, AttributeValue &attribute) const
void	SetAttribute (std::string name, const AttributeValue &value)
bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)
bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)
bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)

Static Public Member Functions
static TypeId	GetTypeId (void)
	This method returns the TypeId associated to ns3::TcpReno.

Protected Member Functions
virtual void	DupAck (const TcpHeader &t, uint32_t count)
virtual Ptr< TcpSocketBase >	Fork (void)
virtual uint32_t	GetInitialCwnd (void) const
virtual uint32_t	GetSSThresh (void) const
virtual void	NewAck (const SequenceNumber32 &seq)
virtual void	Retransmit (void)
virtual void	SetInitialCwnd (uint32_t cwnd)
virtual void	SetSegSize (uint32_t size)
virtual void	SetSSThresh (uint32_t threshold)
virtual uint32_t	Window (void)
Protected Member Functions inherited from ns3::TcpSocketBase
virtual void	AddOptions (TcpHeader &)
virtual uint16_t	AdvertisedWindowSize (void)
virtual uint32_t	AvailableWindow (void)
virtual uint32_t	BytesInFlight (void)
void	CancelAllTimers (void)
void	CloseAndNotify (void)
void	CompleteFork (Ptr< Packet >, const TcpHeader &, const Address &fromAddress, const Address &toAdress)
void	ConnectionSucceeded (void)
void	DeallocateEndPoint (void)
virtual void	DelAckTimeout (void)
void	Destroy (void)
void	Destroy6 (void)
int	DoClose (void)
int	DoConnect (void)
virtual void	DoForwardUp (Ptr< Packet > packet, Ipv4Header header, uint16_t port, Ptr< Ipv4Interface > incomingInterface)
virtual void	DoForwardUp (Ptr< Packet > packet, Ipv6Address saddr, Ipv6Address daddr, uint16_t port)
void	DoPeerClose (void)
virtual void	DoRetransmit (void)
virtual void	EstimateRtt (const TcpHeader &)
void	ForwardUp (Ptr< Packet > packet, Ipv4Header header, uint16_t port, Ptr< Ipv4Interface > incomingInterface)
void	ForwardUp6 (Ptr< Packet > packet, Ipv6Address saddr, Ipv6Address daddr, uint16_t port)
virtual bool	GetAllowBroadcast (void) const
	Query whether broadcast datagram transmissions are allowed.
virtual uint32_t	GetConnCount (void) const
virtual Time	GetConnTimeout (void) const
virtual uint32_t	GetDelAckMaxCount (void) const
virtual Time	GetDelAckTimeout (void) const
virtual Time	GetPersistTimeout (void) const
virtual uint32_t	GetRcvBufSize (void) const
virtual uint32_t	GetSegSize (void) const
virtual uint32_t	GetSndBufSize (void) const
virtual bool	GetTcpNoDelay (void) const
virtual void	LastAckTimeout (void)
bool	OutOfRange (SequenceNumber32 head, SequenceNumber32 tail) const
void	PeerClose (Ptr< Packet >, const TcpHeader &)
virtual void	PersistTimeout (void)
void	ProcessClosing (Ptr< Packet >, const TcpHeader &)
void	ProcessEstablished (Ptr< Packet >, const TcpHeader &)
void	ProcessLastAck (Ptr< Packet >, const TcpHeader &)
void	ProcessListen (Ptr< Packet >, const TcpHeader &, const Address &, const Address &)
void	ProcessSynRcvd (Ptr< Packet >, const TcpHeader &, const Address &, const Address &)
void	ProcessSynSent (Ptr< Packet >, const TcpHeader &)
void	ProcessWait (Ptr< Packet >, const TcpHeader &)
virtual void	ReadOptions (const TcpHeader &)
virtual void	ReceivedAck (Ptr< Packet >, const TcpHeader &)
virtual void	ReceivedData (Ptr< Packet >, const TcpHeader &)
virtual void	ReTxTimeout (void)
uint32_t	SendDataPacket (SequenceNumber32 seq, uint32_t maxSize, bool withAck)
void	SendEmptyPacket (uint8_t flags)
bool	SendPendingData (bool withAck=false)
void	SendRST (void)
virtual bool	SetAllowBroadcast (bool allowBroadcast)
	Configure whether broadcast datagram transmissions are allowed.
virtual void	SetConnCount (uint32_t count)
virtual void	SetConnTimeout (Time timeout)
virtual void	SetDelAckMaxCount (uint32_t count)
virtual void	SetDelAckTimeout (Time timeout)
virtual void	SetPersistTimeout (Time timeout)
virtual void	SetRcvBufSize (uint32_t size)
virtual void	SetSndBufSize (uint32_t size)
virtual void	SetTcpNoDelay (bool noDelay)
int	SetupCallback (void)
int	SetupEndpoint (void)
int	SetupEndpoint6 (void)
void	TimeWait (void)
virtual uint32_t	UnAckDataCount (void)

Protected Attributes
TracedValue< uint32_t >	m_cWnd
bool	m_inFastRec
uint32_t	m_initialCWnd
uint32_t	m_retxThresh
uint32_t	m_ssThresh
Protected Attributes inherited from ns3::TcpSocketBase
bool	m_closeNotified
bool	m_closeOnEmpty
uint32_t	m_cnCount
uint32_t	m_cnRetries
Time	m_cnTimeout
bool	m_connected
uint32_t	m_delAckCount
EventId	m_delAckEvent
uint32_t	m_delAckMaxCount
Time	m_delAckTimeout
uint32_t	m_dupAckCount
Ipv4EndPoint *	m_endPoint
Ipv6EndPoint *	m_endPoint6
enum SocketErrno	m_errno
TracedValue< SequenceNumber32 >	m_highTxMark
EventId	m_lastAckEvent
TracedValue< Time >	m_lastRtt
uint16_t	m_maxWinSize
double	m_msl
TracedValue< SequenceNumber32 >	m_nextTxSequence
Ptr< Node >	m_node
bool	m_noDelay
EventId	m_persistEvent
Time	m_persistTimeout
EventId	m_retxEvent
TracedValue< Time >	m_rto
Ptr< RttEstimator >	m_rtt
TracedValue< uint32_t >	m_rWnd
TcpRxBuffer	m_rxBuffer
uint32_t	m_segmentSize
bool	m_shutdownRecv
bool	m_shutdownSend
TracedValue< TcpStates_t >	m_state
Ptr< TcpL4Protocol >	m_tcp
EventId	m_timewaitEvent
TcpTxBuffer	m_txBuffer

Private Member Functions
void	InitializeCwnd (void)

Additional Inherited Members
Public Types inherited from ns3::Socket
enum	SocketErrno { ERROR_NOTERROR, ERROR_ISCONN, ERROR_NOTCONN, ERROR_MSGSIZE, ERROR_AGAIN, ERROR_SHUTDOWN, ERROR_OPNOTSUPP, ERROR_AFNOSUPPORT, ERROR_INVAL, ERROR_BADF, ERROR_NOROUTETOHOST, ERROR_NODEV, ERROR_ADDRNOTAVAIL, ERROR_ADDRINUSE, SOCKET_ERRNO_LAST }
enum	SocketType { NS3_SOCK_STREAM, NS3_SOCK_SEQPACKET, NS3_SOCK_DGRAM, NS3_SOCK_RAW }
Static Public Attributes inherited from ns3::TcpSocket
static const char *const	TcpStateName [LAST_STATE] = { "CLOSED", "LISTEN", "SYN_SENT", "SYN_RCVD", "ESTABLISHED", "CLOSE_WAIT", "LAST_ACK", "FIN_WAIT_1", "FIN_WAIT_2", "CLOSING", "TIME_WAIT" }

Detailed Description

An implementation of a stream socket using TCP.

This class contains the Reno implementation of TCP, according to RFC2581, except sec.4.1 "re-starting idle connections", which we do not detect for idleness and thus no slow start upon resumption.

Definition at line 38 of file tcp-reno.h.

Constructor & Destructor Documentation

ns3::TcpReno::TcpReno ( void )

Create an unbound tcp socket.

Definition at line 54 of file tcp-reno.cc.

References NS_LOG_FUNCTION.

ns3::TcpReno::TcpReno ( const TcpReno & sock )

Definition at line 59 of file tcp-reno.cc.

References NS_LOG_FUNCTION, and NS_LOG_LOGIC.

ns3::TcpReno::~TcpReno ( void )

virtual

Definition at line 71 of file tcp-reno.cc.

Member Function Documentation

int ns3::TcpReno::Connect ( const Address & address )

virtual

We initialize m_cWnd from this function, after attributes initialized

Reimplemented from ns3::TcpSocketBase.

Definition at line 86 of file tcp-reno.cc.

References InitializeCwnd(), and NS_LOG_FUNCTION.

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void ns3::TcpReno::DupAck	(	const TcpHeader &	t,
		uint32_t	count
	)

protectedvirtual

Implements ns3::TcpSocketBase.

Definition at line 146 of file tcp-reno.cc.

References ns3::TcpSocketBase::BytesInFlight(), ns3::TcpSocketBase::DoRetransmit(), ns3::TcpSocketBase::m_connected, m_cWnd, m_inFastRec, m_retxThresh, ns3::TcpSocketBase::m_segmentSize, m_ssThresh, NS_LOG_FUNCTION, NS_LOG_INFO, and ns3::TcpSocketBase::SendPendingData().

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Ptr< TcpSocketBase > ns3::TcpReno::Fork ( void )

protectedvirtual

Implements ns3::TcpSocketBase.

Definition at line 102 of file tcp-reno.cc.

uint32_t ns3::TcpReno::GetInitialCwnd ( void ) const

protectedvirtual

Implements ns3::TcpSocketBase.

Definition at line 216 of file tcp-reno.cc.

References m_initialCWnd.

uint32_t ns3::TcpReno::GetSSThresh ( void ) const

protectedvirtual

Implements ns3::TcpSocketBase.

Definition at line 203 of file tcp-reno.cc.

References m_ssThresh.

TypeId ns3::TcpReno::GetTypeId ( void )

static

This method returns the TypeId associated to ns3::TcpReno.

Attributes defined for this type:

ReTxThreshold: Threshold for fast retransmit
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 3
- Flags: construct write read

Attributes defined in parent class ns3::TcpSocketBase:

MaxSegLifetime: Maximum segment lifetime in seconds, use for TIME_WAIT state transition to CLOSED state
- Set with class: ns3::DoubleValue
- Underlying type: double 0:1.79769e+308
- Initial value: 120
- Flags: construct write read
MaxWindowSize: Max size of advertised window
- Set with class: ns3::UintegerValue
- Underlying type: uint16_t 0:65535
- Initial value: 65535
- Flags: construct write read

Attributes defined in parent class ns3::TcpSocket:

SndBufSize: TcpSocket maximum transmit buffer size (bytes)
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 131072
- Flags: construct write read
RcvBufSize: TcpSocket maximum receive buffer size (bytes)
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 131072
- Flags: construct write read
SegmentSize: TCP maximum segment size in bytes (may be adjusted based on MTU discovery)
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 536
- Flags: construct write read
SlowStartThreshold: TCP slow start threshold (bytes)
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 65535
- Flags: construct write read
InitialCwnd: TCP initial congestion window size (segments)
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 1
- Flags: construct write read
ConnTimeout: TCP retransmission timeout when opening connection (seconds)
- Set with class: TimeValue
- Underlying type: Time
- Initial value: +3000000000.0ns
- Flags: construct write read
ConnCount: Number of connection attempts (SYN retransmissions) before returning failure
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 6
- Flags: construct write read
DelAckTimeout: Timeout value for TCP delayed acks, in seconds
- Set with class: TimeValue
- Underlying type: Time
- Initial value: +200000000.0ns
- Flags: construct write read
DelAckCount: Number of packets to wait before sending a TCP ack
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 2
- Flags: construct write read
TcpNoDelay: Set to true to disable Nagle's algorithm
- Set with class: BooleanValue
- Underlying type: bool
- Initial value: true
- Flags: construct write read
PersistTimeout: Persist timeout to probe for rx window
- Set with class: TimeValue
- Underlying type: Time
- Initial value: +6000000000.0ns
- Flags: construct write read