Package net.i2p.router.transport.udp

Class SimpleBandwidthEstimator

java.lang.Object

net.i2p.router.transport.udp.SimpleBandwidthEstimator

All Implemented Interfaces:

BandwidthEstimator

class SimpleBandwidthEstimator
extends Object
implements BandwidthEstimator

A Westwood+ bandwidth estimator with a first stage anti-aliasing low pass filter based on RTT, and the time-varying Westwood filter based on inter-arrival time. Ref: TCP Westwood: End-to-End Congestion Control for Wired/Wireless Networks Casetti et al (Westwood) Ref: End-to-End Bandwidth Estimation for Congestion Control in Packet Networks Grieco and Mascolo (Westwood+) Adapted from: Linux kernel tcp_westwood.c (GPLv2)

Since:

0.9.49 adapted from streaming

Constructor Summary

Constructors

Constructor	Description
SimpleBandwidthEstimator(I2PAppContext ctx, PeerState state)

Method Summary

Modifier and Type	Method	Description
void	addSample(int acked)	Records an arriving ack.
float	getBandwidthEstimate()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

SimpleBandwidthEstimator

SimpleBandwidthEstimator(I2PAppContext ctx,
 PeerState state)

Method Details

addSample

public void addSample(int acked)

Records an arriving ack.

Specified by:

addSample in interface BandwidthEstimator

Parameters:

acked - how many bytes were acked with this ack

getBandwidthEstimate

public float getBandwidthEstimate()

Specified by:

getBandwidthEstimate in interface BandwidthEstimator

Returns:

the current bandwidth estimate in bytes/ms.

toString

public String toString()

Overrides:

toString in class Object