udt.packets
Class NegativeAcknowledgement

java.lang.Object
  udt.packets.ControlPacket
      udt.packets.NegativeAcknowledgement

All Implemented Interfaces:

Comparable<UDTPacket>, UDTPacket

public class NegativeAcknowledgement
extends ControlPacket

NAK carries information about lost packets loss info is described in the spec on p.15

Nested Class Summary

Nested classes/interfaces inherited from class udt.packets.ControlPacket

ControlPacket.ControlPacketType

Field Summary

Fields inherited from class udt.packets.ControlPacket

ackSequenceNumber, controlInformation, controlPacketType, destinationID, messageNumber, timeStamp

Constructor Summary

NegativeAcknowledgement()

NegativeAcknowledgement(byte[] controlInformation)

Method Summary

void	addLossInfo(List<Long> sequenceNumbers) pack the given list of sequence numbers and add them to the loss info
void	addLossInfo(long singleSequenceNumber) add a single lost packet number
void	addLossInfo(long firstSequenceNumber, long lastSequenceNumber) add an interval of lost packet numbers
byte[]	encodeControlInformation() this method builds the control information from the control parameters
boolean	equals(Object obj)
List<Integer>	getDecodedLossInfo() Return the lost packet numbers

Methods inherited from class udt.packets.ControlPacket

compareTo, forSender, getAckSequenceNumber, getControlPacketType, getDestinationID, getEncoded, getHeader, getMessageNumber, getPacketSequenceNumber, getSession, getTimeStamp, isConnectionHandshake, isControlPacket, setAckSequenceNumber, setDestinationID, setMessageNumber, setSession, setTimeStamp

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NegativeAcknowledgement

public NegativeAcknowledgement()

NegativeAcknowledgement

public NegativeAcknowledgement(byte[] controlInformation)

Method Detail

addLossInfo

public void addLossInfo(long singleSequenceNumber)

add a single lost packet number

Parameters:

singleSequenceNumber -

addLossInfo

public void addLossInfo(long firstSequenceNumber,
                        long lastSequenceNumber)

add an interval of lost packet numbers

Parameters:

firstSequenceNumber -

lastSequenceNumber -

addLossInfo

public void addLossInfo(List<Long> sequenceNumbers)

pack the given list of sequence numbers and add them to the loss info

Parameters:

sequenceNumbers - - a list of sequence numbers

getDecodedLossInfo

public List<Integer> getDecodedLossInfo()

Return the lost packet numbers

Returns:

encodeControlInformation

public byte[] encodeControlInformation()

Description copied from class: ControlPacket

this method builds the control information from the control parameters

Specified by:

encodeControlInformation in class ControlPacket

Returns:

equals

public boolean equals(Object obj)

Overrides:

equals in class ControlPacket