/*
# Copyright (c) 2009 - OpenSLX Project, Computer Center University of Freiburg
#
# This program is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your suggestions, praise, or complaints to feedback@openslx.org
#
# General information about OpenSLX can be found at http://openslx.org/
# -----------------------------------------------------------------------------
# src/net/mcast/McastReceiver.h
#    - implement the receiver-side multicast file transfer protocol -- interface
# -----------------------------------------------------------------------------
*/

#ifndef MCASTRECEIVER_H_
#define MCASTRECEIVER_H_

#include <QByteArray>
#include <QCryptographicHash>
#include <QIODevice>
#include <QObject>
#include <QtGlobal>

#include <src/net/mcast/McastConfiguration.h>
#include <src/net/mcast/McastPGMSocket.h>

class McastReceiver : public QObject
{
	Q_OBJECT
public:
	enum Result {
	    RES_OK,
	    RES_ABORTED,
        RES_OFFSET_MISMATCH,
	    RES_CHECKSUM_MISMATCH,
	    RES_MD5_MISMATCH,
	    RES_CONNECTION_RESET
	};

	McastReceiver(QIODevice* iodev, McastConfiguration* config = 0, QObject* parent = 0);
	virtual ~McastReceiver();

	McastConfiguration* config()
    {
	    return _config;
    }

	static inline bool is_error(Result result)
	{
	    return result != RES_OK;
	}

signals:
    void finished(int result);

public slots:
    void start();

private:
	McastConfiguration* _config;
	McastPGMSocket* _socket;
	quint64 _curoffs;
    bool _closed;
    QCryptographicHash _hash;
    QIODevice* _iodev;

private slots:
	void receivedPacket(QByteArray const& bytes);
	void connectionReset();

	void _close(Result result);
};

#endif /* MCASTRECEIVER_H_ */