#include <uwApplication_module.h>

Inheritance diagram for uwApplicationModule:

Collaboration diagram for uwApplicationModule:

Public Member Functions
	uwApplicationModule ()

virtual	~uwApplicationModule ()

virtual int	command (int argc, const char const argv) override

virtual void	recv (Packet *) override

virtual double	GetFTT () const

virtual double	GetFTTstd () const

virtual double	GetPER () const

virtual double	GetTHR () const

virtual double	GetRTT () const

virtual double	GetRTTstd () const

virtual int	getPktSent () const

virtual int	getPktLost () const

virtual int	getPktRecv () const

virtual int	getPktsOOSequence () const

virtual int	getPktsInvalidRx () const

virtual int	getPktsPushQueue () const

virtual double	getPeriod () const

std::string	getEpoch () const

virtual void	printOnLog (LogLev log_level, const std::string &module, const std::string &message) const override

Protected Member Functions
virtual void	transmit ()

virtual bool	listenTCP ()

virtual void	acceptTCP ()

virtual void	readFromTCP (int clnSock)

virtual bool	openConnectionUDP ()

virtual void	readFromUDP ()

virtual void	stop ()

virtual bool	withoutSocket ()

virtual bool	useTCP ()

virtual bool	usePoissonTraffic ()

virtual bool	useDropOutOfOrder ()

virtual void	incrPktSent ()

virtual void	incrPktLost (int npkts)

virtual void	incrPktRecv ()

virtual void	incrPktOoseq ()

virtual void	incrPktInvalid ()

virtual void	incrPktsPushQueue ()

virtual double	getTimeBeforeNextPkt ()

virtual void	updateRTT (double rtt)

virtual void	updateFTT (double ftt)

virtual void	updateThroughput (int bytes, double dt)

Protected Attributes
bool	socket_active

bool	socket_tcp

bool *	sn_check

uint8_t	dst_addr

int	poisson_traffic

int	payloadsize

int	port_num

int	drop_out_of_order

int	uidcnt

int	hrsn

int	txsn

int	rftt

int	pkts_lost

int	pkts_recv

int	pkts_ooseq

int	pkts_invalid

int	pkts_push_queue

int	pkts_last_reset

int	sea_trial

int	node_id

int	servSockDescr

int	clnSockDescr

int	servPort

uint32_t	esn

int	rttsamples

int	fttsamples

double	period

double	lrtime

double	sumrtt

double	sumrtt2

double	sumftt

double	sumftt2

double	sumbytes

double	sumdt

struct sockaddr_in	servAddr

struct sockaddr_in	clnAddr

std::thread	socket_thread

std::mutex	socket_mutex

std::atomic< bool >	receiving

std::queue< Packet * >	queuePckReadTCP

std::queue< Packet * >	queuePckReadUDP

uwSendTimerAppl *	chkTimerPeriod

Static Protected Attributes
static uint	MAX_READ_LEN = 64

Friends
class	uwSendTimerAppl

Constructor & Destructor Documentation

◆ uwApplicationModule()

uwApplicationModule::uwApplicationModule ( )

Constructor of uwApplicationModule class

References drop_out_of_order, dst_addr, MAX_READ_LEN, node_id, payloadsize, period, poisson_traffic, port_num, sea_trial, servPort, and sn_check.

◆ ~uwApplicationModule()

uwApplicationModule::~uwApplicationModule ( )

virtual

Destructor of uwApplicationModule class

References stop().

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Member Function Documentation

◆ acceptTCP()

void uwApplicationModule::acceptTCP ( )

protectedvirtual

Method that puts in place a listening TCP socket.

References clnAddr, clnSockDescr, printOnLog(), readFromTCP(), receiving, and servSockDescr.

Referenced by command().

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◆ command()

int uwApplicationModule::command	(	int	argc,
		const char const	argv
	)

overridevirtual

TCL command interpreter. It implements the following OTCL methods:

Parameters

argc	Number of arguments in argv.
argv	Array of strings which are the command parameters (Note that argv[0] is the name of the object).

Returns: TCL_OK or TCL_ERROR whether the command has been dispatched successfully or not.

References acceptTCP(), chkTimerPeriod, GetFTT(), GetFTTstd(), GetPER(), getPktLost(), getPktRecv(), getPktSent(), getPktsInvalidRx(), getPktsOOSequence(), getPktsPushQueue(), GetRTT(), GetRTTstd(), GetTHR(), getTimeBeforeNextPkt(), listenTCP(), openConnectionUDP(), readFromUDP(), receiving, socket_active, socket_tcp, socket_thread, stop(), useTCP(), uwSendTimerAppl, and withoutSocket().

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◆ getEpoch()

std::string uwApplicationModule::getEpoch ( ) const

inline

Calculate the epoch of the event. Used in sea-trial mode.

Returns: the epoch of the system.

Referenced by printOnLog().

◆ GetFTT()

double uwApplicationModule::GetFTT ( ) const

virtual

References fttsamples, and sumftt.

Referenced by command().

◆ GetFTTstd()

double uwApplicationModule::GetFTTstd ( ) const

virtual

Return the standard deviation of the Forward Trip Time calculated

Returns: the standard deviation of the Forward Trip Time calculated

References fttsamples, sumftt, and sumftt2.

Referenced by command().

◆ GetPER()

double uwApplicationModule::GetPER ( ) const

virtual

Rerturn the Packet Error Rate calculated

Returns: the Packet Error Rate calculated

References drop_out_of_order, esn, pkts_lost, and pkts_recv.

Referenced by command().

◆ getPeriod()

virtual double uwApplicationModule::getPeriod ( ) const

inlinevirtual

Return period generation time.

Returns: period

References period.

◆ getPktLost()

virtual int uwApplicationModule::getPktLost ( ) const

inlinevirtual

return the number of DATA packets lost by the server

Returns: pkts_lost

References pkts_lost.

Referenced by command().

◆ getPktRecv()

virtual int uwApplicationModule::getPktRecv ( ) const

inlinevirtual

return the number of DATA packet correctly received by the server

Returns: pkts_recv

References pkts_recv.

Referenced by command().

◆ getPktSent()

virtual int uwApplicationModule::getPktSent ( ) const

inlinevirtual

return the number of packets sent by the server

Returns: txsn

References txsn.

Referenced by command().

◆ getPktsInvalidRx()

virtual int uwApplicationModule::getPktsInvalidRx ( ) const

inlinevirtual

return the number of DATA packets received with error by the server

Returns: pkts_invalid

References pkts_invalid.

Referenced by command().

◆ getPktsOOSequence()

virtual int uwApplicationModule::getPktsOOSequence ( ) const

inlinevirtual

return the number of DATA packets received out of order by the server

Returns: pkts_ooseq

References pkts_ooseq.

Referenced by command().

◆ getPktsPushQueue()

virtual int uwApplicationModule::getPktsPushQueue ( ) const

inlinevirtual

Return the number of DATA packets sorted in the server queue.

Returns: pkts_push_queue

References pkts_push_queue.

Referenced by command().

◆ GetRTT()

double uwApplicationModule::GetRTT ( ) const

virtual

Returns the average Round Trip Time

Returns: the average Round Trip Time

References rttsamples, and sumrtt.

Referenced by command().

◆ GetRTTstd()

double uwApplicationModule::GetRTTstd ( ) const

virtual

Return the standard deviation of the Round Trip Time calculated

Returns: the standard deviation of the Round Trip Time calculated

References rttsamples, sumrtt, and sumrtt2.

Referenced by command().

◆ GetTHR()

double uwApplicationModule::GetTHR ( ) const

virtual

Return the Throughput calculated [bps]

Returns: Throughput [bps]

References sumbytes, and sumdt.

Referenced by command().

◆ getTimeBeforeNextPkt()

double uwApplicationModule::getTimeBeforeNextPkt ( )

protectedvirtual

Compute the DATA generation rate, that can be constant and equal to the period established by the user, or can occur with a Poisson process (only without socket).

Returns: generation period for DATA packets

References period, usePoissonTraffic(), and withoutSocket().

Referenced by command(), and transmit().

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◆ incrPktInvalid()

virtual void uwApplicationModule::incrPktInvalid ( )

inlineprotectedvirtual

Increse the number of DATA packets received with error by the server

References pkts_invalid.

Referenced by recv().

◆ incrPktLost()

virtual void uwApplicationModule::incrPktLost ( int npkts )

inlineprotectedvirtual

Increase the number of DATA packets lost by the server

References pkts_lost.

Referenced by recv().

◆ incrPktOoseq()

virtual void uwApplicationModule::incrPktOoseq ( )

inlineprotectedvirtual

Increase the number of DATA packets received out of order by the server

References pkts_ooseq.

Referenced by recv().

◆ incrPktRecv()

virtual void uwApplicationModule::incrPktRecv ( )

inlineprotectedvirtual

Increase the number of DATA packet correctly received by the server

References pkts_recv.

Referenced by recv().

◆ incrPktSent()

virtual void uwApplicationModule::incrPktSent ( )

inlineprotectedvirtual

Increase the sequence number and so the number of packets sent by the server

References txsn.

Referenced by transmit().

◆ incrPktsPushQueue()

virtual void uwApplicationModule::incrPktsPushQueue ( )

inlineprotectedvirtual

Increase the number of DATA packets stored in the Server queue. This DATA packets will be sent to the below levels of ISO/OSI stack protocol.

References pkts_push_queue.

Referenced by readFromTCP(), and readFromUDP().

◆ listenTCP()

bool uwApplicationModule::listenTCP ( )

protectedvirtual

Method that binds the listening TCP socket.

Returns: true if the listening socket is bind and open.

References printOnLog(), servAddr, servPort, and servSockDescr.

Referenced by command().

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◆ openConnectionUDP()

bool uwApplicationModule::openConnectionUDP ( )

protectedvirtual

When socket communication is used, this method establish a connection between client and server. This is required because a UDP protocol is used.

Returns: true if the socket is bind.

References printOnLog(), servAddr, servPort, and servSockDescr.

Referenced by command().

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◆ printOnLog()

virtual void uwApplicationModule::printOnLog	(	LogLev	log_level,
		const std::string &	module,
		const std::string &	message
	)		const

inlineoverridevirtual

Method to send the log message to the logger. If sea_trial enabled add epoch of the event to the message and use node_id passed via tcl.

Parameters

log_level	LogLevel representing the amout of logs.
module	String name of the plugin/module.
message	String log message.

References getEpoch(), node_id, and sea_trial.

Referenced by acceptTCP(), listenTCP(), openConnectionUDP(), readFromTCP(), readFromUDP(), recv(), and transmit().

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◆ readFromTCP()

void uwApplicationModule::readFromTCP ( int clnSock )

protectedvirtual

Method that reads a TCP byte stream from external application and converts it to a Packet.

Parameters

clnSock int client file descriptor.

References incrPktsPushQueue(), MAX_READ_LEN, hdr_DATA_APPLICATION::payload_msg, hdr_DATA_APPLICATION::payload_size(), printOnLog(), queuePckReadTCP, and socket_mutex.

Referenced by acceptTCP().

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◆ readFromUDP()

void uwApplicationModule::readFromUDP ( )

protectedvirtual

Method that waits for UDP packets from external application and converts it to a Packet.

References clnAddr, incrPktsPushQueue(), hdr_DATA_APPLICATION::payload_msg, hdr_DATA_APPLICATION::payload_size(), printOnLog(), queuePckReadUDP, receiving, servSockDescr, and socket_mutex.

Referenced by command().

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◆ recv()

void uwApplicationModule::recv ( Packet * p )

overridevirtual

Performs the reception of packets from upper and lower layers.

Parameters

Packet* Pointer to the packet will be received.

References clnSockDescr, esn, hrsn, incrPktInvalid(), incrPktLost(), incrPktOoseq(), incrPktRecv(), lrtime, hdr_DATA_APPLICATION::payload_msg, hdr_DATA_APPLICATION::payload_size(), printOnLog(), PT_DATA_APPLICATION, hdr_DATA_APPLICATION::rftt(), rftt, hdr_DATA_APPLICATION::rftt_valid_, hdr_DATA_APPLICATION::sn(), hdr_DATA_APPLICATION::sn_, sn_check, updateFTT(), updateRTT(), updateThroughput(), useDropOutOfOrder(), and withoutSocket().

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◆ stop()

void uwApplicationModule::stop ( )

protectedvirtual

Close the socket connection in the case the communication take place with socket, otherwise stop the execution of the process, so force the cancellation of period time generation.

References chkTimerPeriod, clnSockDescr, receiving, servSockDescr, socket_thread, and withoutSocket().

Referenced by command(), and ~uwApplicationModule().

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◆ transmit()

void uwApplicationModule::transmit ( )

protectedvirtual

Set all the field of the DATA packet that must be send down after the creation to the below level. In this case the payload of DATA packet are generated in a random way.

References chkTimerPeriod, hdr_uwip::daddr(), hdr_uwudp::dport(), dst_addr, getTimeBeforeNextPkt(), incrPktSent(), hdr_DATA_APPLICATION::payload_size(), payloadsize, port_num, printOnLog(), hdr_DATA_APPLICATION::priority(), PT_DATA_APPLICATION, queuePckReadTCP, queuePckReadUDP, hdr_DATA_APPLICATION::rftt(), rftt, hdr_DATA_APPLICATION::rftt_valid(), hdr_DATA_APPLICATION::sn(), txsn, uidcnt, useTCP(), and withoutSocket().

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◆ updateFTT()

void uwApplicationModule::updateFTT ( double ftt )

protectedvirtual

Update the FTT after the reception of a new packet

Parameters

FTT	of the current packet received

References fttsamples, sumftt, and sumftt2.

Referenced by recv().

◆ updateRTT()

void uwApplicationModule::updateRTT ( double rtt )

protectedvirtual

Update the RTT after the reception of a new packet

Parameters

RTT	of the current packet received

References rttsamples, sumrtt, and sumrtt2.

Referenced by recv().

◆ updateThroughput()

void uwApplicationModule::updateThroughput	(	int	bytes,
		double	dt
	)

protectedvirtual

Update the Throughput after the reception of a new packet

Parameters

bytes	of the current packet received
dt	time since last rx of a packet

References sumbytes, and sumdt.

Referenced by recv().

◆ useDropOutOfOrder()

virtual bool uwApplicationModule::useDropOutOfOrder ( )

inlineprotectedvirtual

If the communication take place without sockets verify if the data packets received by the server is out of order or not. In the first case discard the data packet.

Returns: true if enable drop out of order false otherwise.

References drop_out_of_order.

Referenced by recv().

◆ usePoissonTraffic()

virtual bool uwApplicationModule::usePoissonTraffic ( )

inlineprotectedvirtual

If the communication take place without sockets verify if the data generation period is constant or a poisson random process

Returns: true if use a Poisson process false if use a constant period data generation

References poisson_traffic.

Referenced by getTimeBeforeNextPkt().

◆ useTCP()

virtual bool uwApplicationModule::useTCP ( )

inlineprotectedvirtual

Check if the socket protocol is TCP or UDP.

Returns: true if socket uses TCP protocol false if uses UDP.

References socket_tcp.

Referenced by command(), and transmit().

◆ withoutSocket()

virtual bool uwApplicationModule::withoutSocket ( )

inlineprotectedvirtual

Check if the communication take place without socket.

Returns: true if communication without socket false otherwise.

References socket_active.

Referenced by command(), getTimeBeforeNextPkt(), recv(), stop(), and transmit().

Friends And Related Symbol Documentation

◆ uwSendTimerAppl

friend class uwSendTimerAppl

friend

Referenced by command().

Member Data Documentation

◆ chkTimerPeriod

uwSendTimerAppl* uwApplicationModule::chkTimerPeriod

protected

Timer that schedule the period between successive generation of DATA packets.

Referenced by command(), stop(), and transmit().

◆ clnAddr

struct sockaddr_in uwApplicationModule::clnAddr

protected

Client address.

Referenced by acceptTCP(), and readFromUDP().

◆ clnSockDescr

int uwApplicationModule::clnSockDescr

protected

Socket descriptor for client.

Referenced by acceptTCP(), recv(), and stop().

◆ drop_out_of_order

int uwApplicationModule::drop_out_of_order

protected

Ordering of data packet received 1 enabled 0 not enabled.

Referenced by GetPER(), useDropOutOfOrder(), and uwApplicationModule().

◆ dst_addr

uint8_t uwApplicationModule::dst_addr

protected

Destination IP address.

Referenced by transmit(), and uwApplicationModule().

◆ esn

uint32_t uwApplicationModule::esn

protected

Expected serial number.

Referenced by GetPER(), and recv().

◆ fttsamples

int uwApplicationModule::fttsamples

protected

Number of FTT samples.

Referenced by GetFTT(), GetFTTstd(), and updateFTT().

◆ hrsn

int uwApplicationModule::hrsn

protected

Highest received sequence number.

Referenced by recv().

◆ lrtime

double uwApplicationModule::lrtime

protected

Time of last packet reception.

Referenced by recv().

◆ MAX_READ_LEN

uint uwApplicationModule::MAX_READ_LEN = 64

staticprotected

Maximum size (bytes) of a single read of the socket

Referenced by readFromTCP(), and uwApplicationModule().

◆ node_id

int uwApplicationModule::node_id

protected

Node id to be print in log output.

Referenced by printOnLog(), and uwApplicationModule().

◆ payloadsize

int uwApplicationModule::payloadsize

protected

Size of each data packet payaload generated.

Referenced by transmit(), and uwApplicationModule().

◆ period

double uwApplicationModule::period

protected

Time between successive generation data packets.

Referenced by getPeriod(), getTimeBeforeNextPkt(), and uwApplicationModule().

◆ pkts_invalid

int uwApplicationModule::pkts_invalid

protected

Counter of the packets received with errors by the server.

Referenced by getPktsInvalidRx(), and incrPktInvalid().

◆ pkts_last_reset

int uwApplicationModule::pkts_last_reset

protected

Used for error checking after stats are reset. Set to pkts_lost+pkts_recv each time resetStats is called.

◆ pkts_lost

int uwApplicationModule::pkts_lost

protected

Counter of the packet lost during the transmission.

Referenced by GetPER(), getPktLost(), and incrPktLost().

◆ pkts_ooseq

int uwApplicationModule::pkts_ooseq

protected

Counter of the packets received out of order by the server.

Referenced by getPktsOOSequence(), and incrPktOoseq().

◆ pkts_push_queue

int uwApplicationModule::pkts_push_queue

protected

Counter of DATA packets received by server and not yet passed to the below levels of ISO/OSI stack protocol.

Referenced by getPktsPushQueue(), and incrPktsPushQueue().

◆ pkts_recv

int uwApplicationModule::pkts_recv

protected

Counter of the packets correctly received by the server.

Referenced by GetPER(), getPktRecv(), and incrPktRecv().

◆ poisson_traffic

int uwApplicationModule::poisson_traffic

protected

Poisson process for generation of data packets 1 enabled 0 not enabled.

Referenced by usePoissonTraffic(), and uwApplicationModule().

◆ port_num

int uwApplicationModule::port_num

protected

Destination port number.

Referenced by transmit(), and uwApplicationModule().

◆ queuePckReadTCP

std::queue<Packet *> uwApplicationModule::queuePckReadTCP

protected

Atomic boolean variable that controls the socket rx looping thread Queue that store the DATA packets recevied from the client by the server using a TCP protocol.

Referenced by readFromTCP(), and transmit().

◆ queuePckReadUDP

std::queue<Packet *> uwApplicationModule::queuePckReadUDP

protected

Queue that store the DATA packets recevied from the client by the server using a UDP protocol.

Referenced by readFromUDP(), and transmit().

◆ receiving

std::atomic<bool> uwApplicationModule::receiving

protected

Referenced by acceptTCP(), command(), readFromUDP(), and stop().

◆ rftt

int uwApplicationModule::rftt

protected

Forward round trip time.

Referenced by recv(), and transmit().

◆ rttsamples

int uwApplicationModule::rttsamples

protected

Number of RTT samples.

Referenced by GetRTT(), GetRTTstd(), and updateRTT().

◆ sea_trial

int uwApplicationModule::sea_trial

protected

Set to 1 to enable epoch time in log output.

Referenced by printOnLog(), and uwApplicationModule().

◆ servAddr

struct sockaddr_in uwApplicationModule::servAddr

protected

Server address.

Referenced by listenTCP(), and openConnectionUDP().

◆ servPort

int uwApplicationModule::servPort

protected

Socket server port.

Referenced by listenTCP(), openConnectionUDP(), and uwApplicationModule().

◆ servSockDescr

int uwApplicationModule::servSockDescr

protected

Socket descriptor for server.

Referenced by acceptTCP(), listenTCP(), openConnectionUDP(), readFromUDP(), and stop().

◆ sn_check

bool* uwApplicationModule::sn_check

protected

Flag set to true if the external application is connected via a TCP socket, false if UDP. Used to keep track of the packets already received.

Referenced by recv(), and uwApplicationModule().

◆ socket_active

bool uwApplicationModule::socket_active

protected

Referenced by command(), and withoutSocket().

◆ socket_mutex

std::mutex uwApplicationModule::socket_mutex

protected

Mutex associated with the socket rx thread

Referenced by readFromTCP(), and readFromUDP().

◆ socket_tcp

bool uwApplicationModule::socket_tcp

protected

Flag set to true if packets are received from external application.

Referenced by command(), and useTCP().

◆ socket_thread

std::thread uwApplicationModule::socket_thread

protected

Object with the socket rx thread

Referenced by command(), and stop().

◆ sumbytes

double uwApplicationModule::sumbytes

protected

Sum of bytes received.

Referenced by GetTHR(), and updateThroughput().

◆ sumdt

double uwApplicationModule::sumdt

protected

Sum of the delays.

Referenced by GetTHR(), and updateThroughput().

◆ sumftt

double uwApplicationModule::sumftt

protected

Sum of FTT samples.

Referenced by GetFTT(), GetFTTstd(), and updateFTT().

◆ sumftt2

double uwApplicationModule::sumftt2

protected

Sum of (FTT^2).

Referenced by GetFTTstd(), and updateFTT().

◆ sumrtt

double uwApplicationModule::sumrtt

protected

Sum of RTT samples.

Referenced by GetRTT(), GetRTTstd(), and updateRTT().

◆ sumrtt2

double uwApplicationModule::sumrtt2

protected

Sum of (RTT^2).

Referenced by GetRTTstd(), and updateRTT().

◆ txsn

int uwApplicationModule::txsn

protected

Transmission sequence number of DATA packet.

Referenced by getPktSent(), incrPktSent(), and transmit().

◆ uidcnt

int uwApplicationModule::uidcnt

protected

Identifier counter that identify uniquely the DATA packet generated.

Referenced by transmit().

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

DESERT_Framework/DESERT/application/uwApplication/uwApplication_module.h
DESERT_Framework/DESERT/application/uwApplication/uwApplication_module.cpp
DESERT_Framework/DESERT/application/uwApplication/uwApplication_TCP_socket.cpp
DESERT_Framework/DESERT/application/uwApplication/uwApplication_UDP_socket.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Friends

Constructor & Destructor Documentation

◆ uwApplicationModule()

◆ ~uwApplicationModule()

Member Function Documentation

◆ acceptTCP()

◆ command()

◆ getEpoch()

◆ GetFTT()

◆ GetFTTstd()

◆ GetPER()

◆ getPeriod()

◆ getPktLost()

◆ getPktRecv()

◆ getPktSent()

◆ getPktsInvalidRx()

◆ getPktsOOSequence()

◆ getPktsPushQueue()

◆ GetRTT()

◆ GetRTTstd()

◆ GetTHR()

◆ getTimeBeforeNextPkt()

◆ incrPktInvalid()

◆ incrPktLost()

◆ incrPktOoseq()

◆ incrPktRecv()

◆ incrPktSent()

◆ incrPktsPushQueue()

◆ listenTCP()

◆ openConnectionUDP()

◆ printOnLog()

◆ readFromTCP()

◆ readFromUDP()

◆ recv()

◆ stop()

◆ transmit()

◆ updateFTT()

◆ updateRTT()

◆ updateThroughput()

◆ useDropOutOfOrder()

◆ usePoissonTraffic()

◆ useTCP()

◆ withoutSocket()

Friends And Related Symbol Documentation

◆ uwSendTimerAppl

Member Data Documentation

◆ chkTimerPeriod

◆ clnAddr

◆ clnSockDescr

◆ drop_out_of_order

◆ dst_addr

◆ esn

◆ fttsamples

◆ hrsn

◆ lrtime

◆ MAX_READ_LEN

◆ node_id

◆ payloadsize

◆ period

◆ pkts_invalid

◆ pkts_last_reset

◆ pkts_lost

◆ pkts_ooseq

◆ pkts_push_queue

◆ pkts_recv

◆ poisson_traffic

◆ port_num

◆ queuePckReadTCP

◆ queuePckReadUDP

◆ receiving

◆ rftt

◆ rttsamples

◆ sea_trial

◆ servAddr

◆ servPort

◆ servSockDescr