Modifier and Type	Class and Description
public static record	QuicRttEstimator.QuicRttEstimatorState

Modifier and Type	Field and Description
private Deadline	firstSample
private static final long	GRANULARITY_MICROS
private static final long	INITIAL_RTT
private long	latestRttMicros
public static final long	MAX_PTO_BACKOFF
public static final Duration	MAX_PTO_BACKOFF_TIMEOUT
public static final Duration	MIN_PTO_BACKOFF_TIMEOUT
private long	minRttMicros
private long	ptoBackoffFactor
private long	rttSampleCount
private long	rttVarMicros
private long	smoothedRttMicros

Access	Constructor and Description
public	QuicRttEstimator()

Method Summary

Modifier and Type	Method and Description
public synchronized void	consumeRttSample(long time between when packet was sent and ack was received, in microseconds latestRttMicros, long ack delay received in ack frame, decoded to microseconds ackDelayMicros, Deadline time at which latestRttMicros was calculated now) Update the estimator with latest RTT sample.
public synchronized Duration	Returns: the amount of time to wait for acknowledgement of a sent packet, excluding max ack delay getBasePtoDuration() Returns the amount of time to wait for acknowledgement of a sent packet, excluding max ack delay.
public synchronized Duration	Returns: time threshold for time-based loss detection getLossThreshold() Returns time threshold for time-based loss detection.
public synchronized long	getPtoBackoff()
public synchronized long	increasePtoBackoff()
public synchronized boolean	isMinBackoffTimeoutExceeded()
public synchronized void	resetPtoBackoff()
public synchronized QuicRttEstimator.QuicRttEstimatorState	state()

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

firstSample	back to summary
private Deadline firstSample

GRANULARITY_MICROS	back to summary
private static final long GRANULARITY_MICROS

INITIAL_RTT	back to summary
private static final long INITIAL_RTT

latestRttMicros	back to summary
private long latestRttMicros

MAX_PTO_BACKOFF	back to summary
public static final long MAX_PTO_BACKOFF

MAX_PTO_BACKOFF_TIMEOUT	back to summary
public static final Duration MAX_PTO_BACKOFF_TIMEOUT

MIN_PTO_BACKOFF_TIMEOUT	back to summary
public static final Duration MIN_PTO_BACKOFF_TIMEOUT

minRttMicros	back to summary
private long minRttMicros

ptoBackoffFactor	back to summary
private long ptoBackoffFactor

rttSampleCount	back to summary
private long rttSampleCount

rttVarMicros	back to summary
private long rttVarMicros

smoothedRttMicros	back to summary
private long smoothedRttMicros

Constructor Detail

QuicRttEstimator	back to summary
public QuicRttEstimator()

Method Detail

consumeRttSample	back to summary
public synchronized void consumeRttSample(long latestRttMicros, long ackDelayMicros, Deadline now) Update the estimator with latest RTT sample. Use only samples where: - the largest acknowledged PN is newly acknowledged - at least one of the newly acked packets is ack-eliciting Parameters latestRttMicros:long time between when packet was sent and ack was received, in microseconds ackDelayMicros:long ack delay received in ack frame, decoded to microseconds now:Deadline time at which latestRttMicros was calculated

consumeRttSample

back to summary

public synchronized void consumeRttSample(long latestRttMicros, long ackDelayMicros, Deadline now)

Update the estimator with latest RTT sample. Use only samples where: - the largest acknowledged PN is newly acknowledged - at least one of the newly acked packets is ack-eliciting

Parameters

latestRttMicros:long: time between when packet was sent and ack was received, in microseconds
ackDelayMicros:long: ack delay received in ack frame, decoded to microseconds
now:Deadline: time at which latestRttMicros was calculated

getBasePtoDuration	back to summary
public synchronized Duration getBasePtoDuration() Returns the amount of time to wait for acknowledgement of a sent packet, excluding max ack delay. See RFC 9002 section 6.1.2 Returns:Duration the amount of time to wait for acknowledgement of a sent packet, excluding max ack delay

getBasePtoDuration

back to summary

public synchronized Duration getBasePtoDuration()

Returns the amount of time to wait for acknowledgement of a sent packet, excluding max ack delay. See RFC 9002 section 6.1.2

Returns:Duration: the amount of time to wait for acknowledgement of a sent packet, excluding max ack delay

getLossThreshold	back to summary
public synchronized Duration getLossThreshold() Returns time threshold for time-based loss detection. See RFC 9002 section 6.1.2 Returns:Duration time threshold for time-based loss detection

getLossThreshold

back to summary

public synchronized Duration getLossThreshold()

Returns time threshold for time-based loss detection. See RFC 9002 section 6.1.2

Returns:Duration: time threshold for time-based loss detection

getPtoBackoff	back to summary
public synchronized long getPtoBackoff()

increasePtoBackoff	back to summary
public synchronized long increasePtoBackoff()

isMinBackoffTimeoutExceeded	back to summary
public synchronized boolean isMinBackoffTimeoutExceeded()

resetPtoBackoff	back to summary
public synchronized void resetPtoBackoff()

state	back to summary
public synchronized QuicRttEstimator.QuicRttEstimatorState state()

jdk.internal.net.http.quic back to summary

public final Record QuicRttEstimator.QuicRttEstimatorState

Class Inheritance

extends Record

java.lang.Object
java.lang.Record
jdk.internal.net.http.quic.QuicRttEstimator.QuicRttEstimatorState

Record Components

latestRttMicros:long
minRttMicros:long
smoothedRttMicros:long
rttVarMicros:long
rttSampleCount:long

Field Summary

Modifier and Type	Field and Description
private final long	latestRttMicros Record Component accessed by latestRttMicros().
private final long	minRttMicros Record Component accessed by minRttMicros().
private final long	rttSampleCount Record Component accessed by rttSampleCount().
private final long	rttVarMicros Record Component accessed by rttVarMicros().
private final long	smoothedRttMicros Record Component accessed by smoothedRttMicros().

Constructor Summary

Access	Constructor and Description
public	QuicRttEstimatorState(long latestRttMicros, long minRttMicros, long smoothedRttMicros, long rttVarMicros, long rttSampleCount)

Method Summary

Modifier and Type	Method and Description
public final boolean	equals(Object o) Implements abstract java.lang.Record.equals. Indicates whether some other object is "equal to" this one.
public final int	hashCode() Implements abstract java.lang.Record.hashCode. Returns a hash code value for the record.
public long	latestRttMicros() Record Component getter of latestRttMicros.
public long	minRttMicros() Record Component getter of minRttMicros.
public long	rttSampleCount() Record Component getter of rttSampleCount.
public long	rttVarMicros() Record Component getter of rttVarMicros.
public long	smoothedRttMicros() Record Component getter of smoothedRttMicros.
public final String	toString() Implements abstract java.lang.Record.toString. Returns a string representation of the record.

Field Detail

latestRttMicros	back to summary
private final long latestRttMicros Record Component accessed by latestRttMicros().

minRttMicros	back to summary
private final long minRttMicros Record Component accessed by minRttMicros().

rttSampleCount	back to summary
private final long rttSampleCount Record Component accessed by rttSampleCount().

rttVarMicros	back to summary
private final long rttVarMicros Record Component accessed by rttVarMicros().

smoothedRttMicros	back to summary
private final long smoothedRttMicros Record Component accessed by smoothedRttMicros().

Constructor Detail

QuicRttEstimatorState	back to summary
public QuicRttEstimatorState(long latestRttMicros, long minRttMicros, long smoothedRttMicros, long rttVarMicros, long rttSampleCount)

Method Detail

equals back to summary

equals	back to summary
public final boolean equals(Object o) Implements abstract java.lang.Record.equals. Doc from java.lang.Record.equals. Indicates whether some other object is "equal to" this one. In addition to the general contract of `Object.equals`, record classes must further obey the invariant that when a record instance is "copied" by passing the result of the record component accessor methods to the canonical constructor, as follows: R copy = new R(r.c1(), r.c2(), ..., r.cn()); then it must be the case that `r.equals(copy)`.

public final boolean equals(Object o)

Implements abstract java.lang.Record.equals.

Doc from java.lang.Record.equals.

Indicates whether some other object is "equal to" this one. In addition to the general contract of Object.equals, record classes must further obey the invariant that when a record instance is "copied" by passing the result of the record component accessor methods to the canonical constructor, as follows:

    R copy = new R(r.c1(), r.c2(), ..., r.cn());

then it must be the case that r.equals(copy).

hashCode back to summary

hashCode	back to summary
public final int hashCode() Implements abstract java.lang.Record.hashCode. Doc from java.lang.Record.hashCode. Returns a hash code value for the record. Obeys the general contract of `Object.hashCode`. For records, hashing behavior is constrained by the refined contract of `Record.equals`, so that any two records created from the same components must have the same hash code.

public final int hashCode()

Implements abstract java.lang.Record.hashCode.

Doc from java.lang.Record.hashCode.

Returns a hash code value for the record. Obeys the general contract of Object.hashCode. For records, hashing behavior is constrained by the refined contract of Record.equals, so that any two records created from the same components must have the same hash code.

latestRttMicros	back to summary
public long latestRttMicros() Record Component getter of latestRttMicros.

minRttMicros	back to summary
public long minRttMicros() Record Component getter of minRttMicros.

rttSampleCount	back to summary
public long rttSampleCount() Record Component getter of rttSampleCount.

rttVarMicros	back to summary
public long rttVarMicros() Record Component getter of rttVarMicros.

smoothedRttMicros	back to summary
public long smoothedRttMicros() Record Component getter of smoothedRttMicros.

toString back to summary

toString	back to summary
public final String toString() Implements abstract java.lang.Record.toString. Doc from java.lang.Record.toString. Returns a string representation of the record. In accordance with the general contract of `Object#toString()`, the `toString` method returns a string that "textually represents" this record. The result should be a concise but informative representation that is easy for a person to read. In addition to this general contract, record classes must further participate in the invariant that any two records which are equal must produce equal strings. This invariant is necessarily relaxed in the rare case where corresponding equal component values might fail to produce equal strings for themselves.

public final String toString()

Implements abstract java.lang.Record.toString.

Doc from java.lang.Record.toString.

Returns a string representation of the record. In accordance with the general contract of Object#toString(), the toString method returns a string that "textually represents" this record. The result should be a concise but informative representation that is easy for a person to read.

In addition to this general contract, record classes must further participate in the invariant that any two records which are equal must produce equal strings. This invariant is necessarily relaxed in the rare case where corresponding equal component values might fail to produce equal strings for themselves.

public Class QuicRttEstimator

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

public final Record QuicRttEstimator.QuicRttEstimatorState

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail