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A QUIC implementation in Java

There is a newer version: 0.9.1

/*
 * Copyright © 2020, 2021, 2022, 2023 Peter Doornbosch
 *
 * This file is part of Kwik, an implementation of the QUIC protocol in Java.
 *
 * Kwik is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * Kwik is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
 * more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see .
 */
package net.luminis.quic;

import net.luminis.quic.send.SendStatistics;

public class Statistics {

    private final SendStatistics senderStatistics;

    public Statistics(SendStatistics statistics) {
        senderStatistics = statistics;
    }

    @SuppressWarnings("NarrowCalculation")
    public float efficiency() {
        return senderStatistics.bytesSent() > 0? (float) ((senderStatistics.dataBytesSent() * 1000 / senderStatistics.bytesSent()) / 10.0) : 0;
    }

    @Override
    public String toString() {
        return String.format(
                "datagrams sent: %d\npackets send: %d\nbytes sent: %d\ndata sent: %d\nefficieny: %.1f\npackets lost: %d" +
                "\nsmoothed RTT: %d\nRTT var: %d\nlatest RTT: %d",
                senderStatistics.datagramsSent(), senderStatistics.packetsSent(), senderStatistics.bytesSent(),
                senderStatistics.dataBytesSent(),
                efficiency(),
                senderStatistics.lostPackets(),
                senderStatistics.smoothedRtt(), senderStatistics.rttVar(), senderStatistics.latestRtt());
    }
}