qt5base-lts/examples/network/torrent/trackerclient.h

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef TRACKERCLIENT_H
#define TRACKERCLIENT_H

#include <QByteArray>
#include <QList>
#include <QObject>
#include <QHostAddress>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QAuthenticator>

#include "metainfo.h"
#include "torrentclient.h"

class TorrentClient;

class TrackerClient : public QObject
{
    Q_OBJECT

public:
    explicit TrackerClient(TorrentClient *downloader, QObject *parent = 0);

    void start(const MetaInfo &info);
    void stop();
    void startSeeding();

signals:
    void connectionError(QNetworkReply::NetworkError error);

    void failure(const QString &reason);
    void warning(const QString &message);
    void peerListUpdated(const QList<TorrentPeer> &peerList);

    void uploadCountUpdated(qint64 newUploadCount);
    void downloadCountUpdated(qint64 newDownloadCount);

    void stopped();

protected:
    void timerEvent(QTimerEvent *event) Q_DECL_OVERRIDE;

private slots:
    void fetchPeerList();
    void httpRequestDone(QNetworkReply *reply);
    void provideAuthentication(QNetworkReply *reply, QAuthenticator *auth);

private:
    TorrentClient *torrentDownloader;

    int requestInterval;
    int requestIntervalTimer;
    QNetworkAccessManager http;
    MetaInfo metaInfo;
    QByteArray trackerId;
    QList<TorrentPeer> peers;
    qint64 uploadedBytes;
    qint64 downloadedBytes;
    qint64 length;
    QString uname;
    QString pwd;

    bool firstTrackerRequest;
    bool lastTrackerRequest;
    bool firstSeeding;
};

#endif