udt
Interface CongestionControl

All Known Implementing Classes:

SimpleTCP, UDTCongestionControl

public interface CongestionControl

congestion control interface

Method Summary

void	close() Callback function to be called when a UDT connection is closed.
long	getAckInterval() get the ACK interval.
double	getCongestionWindowSize() get the congestion window size
long	getEstimatedLinkCapacity() get the current value of the estimated link capacity
long	getPacketArrivalRate() get the current value of the packet arrival
double	getSendInterval() get the current value of the inter-packet interval in microseconds
void	init() Callback function to be called (only) at the start of a UDT connection.
void	onACK(long ackSeqno) Callback function to be called when an ACK packet is received.
void	onLoss(List<Integer> lossInfo) Callback function to be called when a loss report is received.
void	onPacketReceive(long packetSeqNo) Callback function to be called when a data packet is received.
void	onPacketSend(long packetSeqNo) Callback function to be called when a data packet is sent.
void	onTimeout() Callback function to be called when a timeout event occurs
void	setAckInterval(long ackInterval) set the ACK interval.
void	setRTT(long rtt, long rttVar) set roundtrip time and associated variance
void	updatePacketArrivalRate(long rate, long linkCapacity) update packet arrival rate and link capacity with the values received in an ACK packet

Method Detail

init

void init()

Callback function to be called (only) at the start of a UDT connection. when the UDT socket is conected

setRTT

void setRTT(long rtt,
            long rttVar)

set roundtrip time and associated variance

Parameters:

rtt - - round trip time in microseconds

rttVar - - round trip time variance in microseconds

updatePacketArrivalRate

void updatePacketArrivalRate(long rate,
                             long linkCapacity)

update packet arrival rate and link capacity with the values received in an ACK packet

Parameters:

rate - - packet rate in packets per second

linkCapacity - - estimated link capacity in packets per second

getPacketArrivalRate

long getPacketArrivalRate()

get the current value of the packet arrival

getEstimatedLinkCapacity

long getEstimatedLinkCapacity()

get the current value of the estimated link capacity

getSendInterval

double getSendInterval()

get the current value of the inter-packet interval in microseconds

getCongestionWindowSize

double getCongestionWindowSize()

get the congestion window size

getAckInterval

long getAckInterval()

get the ACK interval. If larger than 0, the receiver should acknowledge every n'th packet

setAckInterval

void setAckInterval(long ackInterval)

set the ACK interval. If larger than 0, the receiver should acknowledge every n'th packet

onACK

void onACK(long ackSeqno)

Callback function to be called when an ACK packet is received.

Parameters:

ackSeqno - - the data sequence number acknowledged by this ACK. see spec. page(16-17)

onLoss

void onLoss(List<Integer> lossInfo)

Callback function to be called when a loss report is received.

Parameters:

lossInfo - - list of sequence number of packets

onTimeout

void onTimeout()

Callback function to be called when a timeout event occurs

onPacketSend

void onPacketSend(long packetSeqNo)

Callback function to be called when a data packet is sent.

Parameters:

packetSeqNo - - the data packet sequence number

onPacketReceive

void onPacketReceive(long packetSeqNo)

Callback function to be called when a data packet is received.

Parameters:

packetSeqNo - - the data packet sequence number.

close

void close()

Callback function to be called when a UDT connection is closed.