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/*
transport.h - Peer to peer transport
Copyright (c) 2005 by Gregg Edghill <[email protected]>
Kopete (c) 2002-2005 by the Kopete developers <[email protected]>
*************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; version 2 of the License. *
* *
*************************************************************************
*/
#ifndef PEERTOPEERTRANSPORT_H
#define PEERTOPEERTRANSPORT_H
//BEGIN QT Includes
#include <qobject.h>
#include <qguardedptr.h>
#include <qvaluelist.h>
//END
//BEGIN KDE Includes
#include <ksocketaddress.h>
//END
namespace KNetwork {
class KClientSocketBase;
}
class MSNSwitchBoardSocket;
namespace PeerToPeer {
class MessageFormatter;
class TransportBridge;
enum TransportBridgeType
{
Tcp = 1,
Udp = 2
};
/**
@author Gregg Edghill <[email protected]> */
/** @brief Represents the protocol used to send and receive message between peers. */
class Transport : public QObject
{
Q_OBJECT
public:
/** @brief Creates a new instance of the class Transport. */
Transport(QObject* parent, const char* name = 0l);
~Transport();
/** @brief Get a transport bridge with the specified address, port, type and identifier. */
TransportBridge* getBridge(const QString& address, Q_UINT16 port, TransportBridgeType type, const QString& identifier);
/** @brief Sets the default transport bridge. */
void setDefaultBridge(MSNSwitchBoardSocket* mss);
private slots:
/** @brief Invokes when a message is received on a transport bridge. */
// void slotOnReceive(Message& message);
/** @brief Invokes when a message is received on the default transport bridge (relay). */
void slotOnReceive(const QString& contact, const QByteArray& bytes);
private:
/** @brief Known SocketAddresses of peers. */
QMap<QString, KNetwork::KInetSocketAddress> mAddresses;
/** @brief The list the connected transport bridges. */
QValueList<TransportBridge*> mBridges;
/** @brief The default transport bridge (relay). */
QGuardedPtr<MSNSwitchBoardSocket> mDefaultBridge;
/** @brief Message formatter used to ser/deser message. */
MessageFormatter *mFormatter;
};
/** @brief Represents the channel connecting two peers. */
class TransportBridge : public QObject
{
Q_OBJECT
public:
virtual ~TransportBridge();
protected:
/** @brief Creates a new instance of the class TransportBridge with the specified address and formatter. */
TransportBridge(const KNetwork::KInetSocketAddress& to, MessageFormatter* formatter, QObject* parent, const char* name = 0l);
/** @brief Creates a new instance of the class TransportBridge with the specified socket and formatter. */
TransportBridge(KNetwork::KClientSocketBase* socket, MessageFormatter* formatter, QObject* parent, const char* name = 0l);
public:
/** @brief Creates a connection between two peers. */
void connect();
/** @brief Disconnects the connection between two peers. */
void disconnect();
protected slots:
virtual void slotOnConnect();
virtual void slotOnDisconnect();
virtual void slotOnError(int);
virtual void slotOnSocketClose();
virtual void slotOnSocketConnect();
virtual void slotOnSocketReceive();
signals:
void bridgeConnect();
void bridgeDisconnect();
void bridgeError(const QString& e);
void bytesReceived(const QByteArray&);
protected:
KNetwork::KInetSocketAddress mAddress;
bool mConnected;
MessageFormatter *mFormatter;
Q_UINT32 mLength;
KNetwork::KClientSocketBase *mSocket;
bool mVerified;
};
class TcpTransportBridge : public TransportBridge
{
Q_OBJECT
friend class Transport;
public:
virtual ~TcpTransportBridge();
private:
TcpTransportBridge(const KNetwork::KInetSocketAddress& to, MessageFormatter* formatter, QObject* parent, const char* name = 0l);
TcpTransportBridge(KNetwork::KClientSocketBase* socket, MessageFormatter* formatter, QObject* parent, const char* name = 0l);
protected slots:
virtual void slotOnConnect();
virtual void slotOnDisconnect();
virtual void slotOnError(int);
virtual void slotOnSocketClose();
virtual void slotOnSocketConnect();
virtual void slotOnSocketReceive();
private slots:
void slotOnSocketConnectTimeout();
signals:
void bridgeConnectTimeout();
private:
class Buffer : public QByteArray
{
public:
Buffer(Q_UINT32 length = 0);
~Buffer();
public:
void write(const QByteArray& bytes);
QByteArray read(Q_UINT32 length);
};
Buffer mBuffer;
Q_UINT32 mLength;
};
}
#endif
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