#include <TcpBaseAlg.h>

Inheritance diagram for inet::tcp::TcpBaseAlgStateVariables:

Public Member Functions
	TcpBaseAlgStateVariables ()

virtual std::string	str () const override

virtual std::string	detailedInfo () const override

Public Member Functions inherited from inet::tcp::TcpStateVariables
	TcpStateVariables ()

Public Attributes
int	rexmit_count
	retransmit count More...

simtime_t	rexmit_timeout
	current retransmission timeout (aka RTO) More...

uint	persist_factor
	persist factor More...

simtime_t	persist_timeout
	current persist timeout More...

uint32_t	snd_cwnd
	congestion window More...

uint32_t	rtseq
	round-trip time measurements More...

simtime_t	rtseq_sendtime
	time when rtseq was sent (0 if RTT measurement is not running) More...

simtime_t	srtt
	round-trip time estimation (Jacobson's algorithm) More...

simtime_t	rttvar
	variance of round-trip time More...

uint32_t	numRtos
	number of RTOs More...

uint32_t	recover
	RFC 3782 variables. More...

bool	firstPartialACK
	first partial acknowledgement (RFC 3782) More...

Public Attributes inherited from inet::tcp::TcpStateVariables
bool	active

bool	fork

uint32_t	snd_mss

uint32_t	snd_una

uint32_t	snd_nxt

uint32_t	snd_max

uint32_t	snd_wnd

uint32_t	snd_up

uint32_t	snd_wl1

uint32_t	snd_wl2

uint32_t	iss

uint32_t	rcv_nxt

uint32_t	rcv_wnd

uint32_t	rcv_up

uint32_t	irs

uint32_t	rcv_adv

int	syn_rexmit_count

simtime_t	syn_rexmit_timeout

bool	fin_ack_rcvd

bool	send_fin

uint32_t	snd_fin_seq

bool	fin_rcvd

uint32_t	rcv_fin_seq

bool	nagle_enabled

bool	delayed_acks_enabled

bool	limited_transmit_enabled

bool	increased_IW_enabled

uint32_t	full_sized_segment_counter

bool	ack_now

bool	afterRto

bool	ws_support

bool	ws_enabled

int	ws_manual_scale

bool	snd_ws

bool	rcv_ws

uint	rcv_wnd_scale

uint	snd_wnd_scale

bool	ts_support

bool	ts_enabled

bool	snd_initial_ts

bool	rcv_initial_ts

uint32_t	ts_recent

uint32_t	last_ack_sent

simtime_t	time_last_data_sent

bool	sack_support

bool	sack_enabled

bool	snd_sack_perm

bool	rcv_sack_perm

uint32_t	start_seqno

uint32_t	end_seqno

bool	snd_sack

bool	snd_dsack

SackList	sacks_array

uint32_t	highRxt

uint32_t	pipe

uint32_t	recoveryPoint

uint32_t	sackedBytes

uint32_t	sackedBytes_old

bool	lossRecovery

uint32_t	sendQueueLimit

bool	queueUpdate

uint32_t	dupacks

uint32_t	snd_sacks

uint32_t	rcv_sacks

uint32_t	rcv_oooseg

uint32_t	rcv_naseg

uint32_t	maxRcvBuffer

uint32_t	usedRcvBuffer

uint32_t	freeRcvBuffer

uint32_t	tcpRcvQueueDrops

bool	ecnEchoState

bool	sndCwr

bool	gotEce

bool	gotCeIndication

bool	ect

bool	endPointIsWillingECN

bool	ecnSynSent

bool	ecnWillingness

bool	sndAck

bool	rexmit

simtime_t	eceReactionTime

uint32_t	dupthresh

Detailed Description

State variables for TcpBaseAlg.

Constructor & Destructor Documentation

◆ TcpBaseAlgStateVariables()

inet::tcp::TcpBaseAlgStateVariables::TcpBaseAlgStateVariables ( )

 {
     rexmit_count = 0;
     rexmit_timeout = 3.0;
  
     persist_factor = 0;
     persist_timeout = 5.0;
  
     snd_cwnd = 0; // will be set to SMSS when connection is established
  
     rtseq = 0;
     rtseq_sendtime = 0;
  
     // Jacobson's alg: srtt must be initialized to 0, rttvar to a value which
     // will yield rto = 3s initially.
     srtt = 0;
     rttvar = 3.0 / 4.0;
  
     numRtos = 0;
  
     // RFC 3782, page 4:
     // "The algorithm specified in this document uses a variable "recover",
     // whose initial value is the initial send sequence number."
     recover = iss;
     firstPartialACK = false;
 }

Member Function Documentation

◆ detailedInfo()

std::string inet::tcp::TcpBaseAlgStateVariables::detailedInfo ( ) const

overridevirtual

Reimplemented from inet::tcp::TcpStateVariables.

Reimplemented in inet::tcp::TcpWestwoodStateVariables, inet::tcp::TcpVegasStateVariables, inet::tcp::TcpTahoeRenoFamilyStateVariables, and inet::tcp::DcTcpFamilyStateVariables.

 {
     std::stringstream out;
     out << TcpStateVariables::detailedInfo();
     out << "snd_cwnd=" << snd_cwnd << "\n";
     out << "rto=" << rexmit_timeout << "\n";
     out << "persist_timeout=" << persist_timeout << "\n";
     // TODO add others too
     return out.str();
 }

Referenced by inet::tcp::TcpTahoeRenoFamilyStateVariables::detailedInfo(), inet::tcp::TcpVegasStateVariables::detailedInfo(), and inet::tcp::TcpWestwoodStateVariables::detailedInfo().

◆ str()

std::string inet::tcp::TcpBaseAlgStateVariables::str ( ) const

overridevirtual

Reimplemented from inet::tcp::TcpStateVariables.

Reimplemented in inet::tcp::TcpWestwoodStateVariables, inet::tcp::TcpVegasStateVariables, inet::tcp::TcpTahoeRenoFamilyStateVariables, and inet::tcp::DcTcpFamilyStateVariables.

 {
     std::stringstream out;
     out << TcpStateVariables::str();
     out << " snd_cwnd=" << snd_cwnd;
     out << " rto=" << rexmit_timeout;
     return out.str();
 }