/*
# 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/McastPGMSocket.h
#    - wrap OpenPGM Sockets in a nicer interface -- interface
# -----------------------------------------------------------------------------
*/

#ifndef MCASTPGMSOCKET_H_
#define MCASTPGMSOCKET_H_

#include <QByteArray>
#include <QObject>
#include <QQueue>

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

class McastPGMSocket_priv;
class QTimer;

class McastPGMSocket : public QObject
{
	Q_OBJECT
public:
	enum Direction {
		PSOCK_READ,
		PSOCK_WRITE
	};

	McastPGMSocket(QObject* parent = 0);
	virtual ~McastPGMSocket();

	bool open(McastConfiguration const* config, Direction direction);
	bool finished() const;
	bool isOpen() const;
    void shutdown(int interval = DEFAULT_MULTICAST_SHUTDOWN_TIMEOUT);

signals:
    void readyToSend();
    void receivedPacket(QByteArray const& bytes);
    void connectionReset();
    void connectionFinished();
    void shutdownComplete();

public slots:
    void sendPacket(QByteArray const& bytes);
    void finish();

private slots:
	void handleNak(int fd);
	void handleData(int fd);
	void handleNak();
	void handleData();
	void handleNakTimeout();
	void handleDataTimeout();
	void canSend();

private:
	McastPGMSocket_priv* _priv;
	QQueue<QByteArray> _q;
	bool _finished;
	bool _opened;
	QTimer* _nakTimeout;
	QTimer* _dataTimeout;
	QTimer* _sendTimeout;
	QTimer* _shutdownTimer;
	int _shutdown_timeout;

	void setupNotifiers();
};

#endif /* MCASTPGMSOCKET_H_ */