#include <TCPBaseAlg.h>

Inheritance diagram for inet::tcp::TCPBaseAlgStateVariables:

Public Member Functions
	TCPBaseAlgStateVariables ()

virtual std::string	info () 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	snd_cwnd
	congestion window More...


uint32	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	numRtos
	number of RTOs More...


uint32	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	snd_mss

uint32	snd_una

uint32	snd_nxt

uint32	snd_max

uint32	snd_wnd

uint32	snd_up

uint32	snd_wl1

uint32	snd_wl2

uint32	iss

uint32	rcv_nxt

uint32	rcv_wnd

uint32	rcv_up

uint32	irs

uint32	rcv_adv

int	syn_rexmit_count

simtime_t	syn_rexmit_timeout

bool	fin_ack_rcvd

bool	send_fin

uint32	snd_fin_seq

bool	fin_rcvd

uint32	rcv_fin_seq

uint32	sentBytes

bool	nagle_enabled

bool	delayed_acks_enabled

bool	limited_transmit_enabled

bool	increased_IW_enabled

uint32	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	ts_recent

uint32	last_ack_sent

simtime_t	time_last_data_sent

bool	sack_support

bool	sack_enabled

bool	snd_sack_perm

bool	rcv_sack_perm

uint32	start_seqno

uint32	end_seqno

bool	snd_sack

bool	snd_dsack

SackList	sacks_array

uint32	highRxt

uint32	pipe

uint32	recoveryPoint

uint32	sackedBytes

uint32	sackedBytes_old

bool	lossRecovery

uint32	sendQueueLimit

bool	queueUpdate

uint32	dupacks

uint32	snd_sacks

uint32	rcv_sacks

uint32	rcv_oooseg

uint32	rcv_naseg

uint32	maxRcvBuffer

uint32	usedRcvBuffer

uint32	freeRcvBuffer

uint32	tcpRcvQueueDrops

Detailed Description

State variables for TCPBaseAlg.

Constructor & Destructor Documentation

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

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

overridevirtual

Reimplemented from inet::tcp::TCPStateVariables.

Reimplemented in inet::tcp::TCPVegasStateVariables, inet::tcp::TCPWestwoodStateVariables, and inet::tcp::TCPTahoeRenoFamilyStateVariables.

Referenced by inet::tcp::TCPTahoeRenoFamilyStateVariables::detailedInfo(), inet::tcp::TCPWestwoodStateVariables::detailedInfo(), and inet::tcp::TCPVegasStateVariables::detailedInfo().

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

std::string inet::tcp::TCPBaseAlgStateVariables::info ( ) const

overridevirtual

Reimplemented from inet::tcp::TCPStateVariables.

Reimplemented in inet::tcp::TCPVegasStateVariables, inet::tcp::TCPWestwoodStateVariables, and inet::tcp::TCPTahoeRenoFamilyStateVariables.

Referenced by inet::tcp::TCPTahoeRenoFamilyStateVariables::info(), inet::tcp::TCPWestwoodStateVariables::info(), inet::tcp::TCPVegasStateVariables::info(), and inet::tcp::TCPBaseAlg::processRexmitTimer().

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