/usr/include/qxmpp/QXmppStun.h is in libqxmpp-dev 0.3.0-1ubuntu1.
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* Copyright (C) 2008-2011 The QXmpp developers
*
* Author:
* Jeremy Lainé
*
* Source:
* http://code.google.com/p/qxmpp
*
* This file is a part of QXmpp library.
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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.
*
*/
#ifndef QXMPPSTUN_H
#define QXMPPSTUN_H
#include <QObject>
#include "QXmppLogger.h"
#include "QXmppJingleIq.h"
class QDataStream;
class QUdpSocket;
class QTimer;
/// \internal
///
/// The QXmppStunMessage class represents a STUN message.
///
class QXmppStunMessage
{
public:
enum MethodType {
Binding = 0x1,
SharedSecret = 0x2,
Allocate = 0x3,
};
enum MessageType {
Request = 0x000,
Indication = 0x010,
Response = 0x100,
Error = 0x110,
};
QXmppStunMessage();
quint32 cookie() const;
void setCookie(quint32 cookie);
QByteArray id() const;
void setId(const QByteArray &id);
quint16 type() const;
void setType(quint16 type);
// attributes
quint32 changeRequest() const;
void setChangeRequest(quint32 changeRequest);
quint32 priority() const;
void setPriority(quint32 priority);
QString software() const;
void setSoftware(const QString &software);
QByteArray encode(const QString &password = QString(), bool addFingerprint = true) const;
bool decode(const QByteArray &buffer, const QString &password = QString(), QStringList *errors = 0);
QString toString() const;
static quint16 peekType(const QByteArray &buffer, quint32 &cookie, QByteArray &id);
// attributes
int errorCode;
QString errorPhrase;
QByteArray iceControlling;
QByteArray iceControlled;
QHostAddress changedHost;
quint16 changedPort;
QHostAddress mappedHost;
quint16 mappedPort;
QHostAddress otherHost;
quint16 otherPort;
QHostAddress sourceHost;
quint16 sourcePort;
QHostAddress xorMappedHost;
quint16 xorMappedPort;
QString username;
bool useCandidate;
private:
quint32 m_cookie;
QByteArray m_id;
quint16 m_type;
QSet<quint16> m_attributes;
quint32 m_changeRequest;
quint32 m_priority;
QString m_software;
};
/// \brief The QXmppIceComponent class represents a piece of a media stream
/// requiring a single transport address, as defined by RFC 5245
/// (Interactive Connectivity Establishment).
class QXmppIceComponent : public QXmppLoggable
{
Q_OBJECT
public:
QXmppIceComponent(bool controlling, QObject *parent=0);
~QXmppIceComponent();
void setStunServer(const QHostAddress &host, quint16 port);
QList<QXmppJingleCandidate> localCandidates() const;
void setLocalUser(const QString &user);
void setLocalPassword(const QString &password);
int component() const;
void setComponent(int component);
bool addRemoteCandidate(const QXmppJingleCandidate &candidate);
void setRemoteUser(const QString &user);
void setRemotePassword(const QString &password);
bool isConnected() const;
void setSockets(QList<QUdpSocket*> sockets);
static QList<QHostAddress> discoverAddresses();
static QList<QUdpSocket*> reservePorts(const QList<QHostAddress> &addresses, int count, QObject *parent = 0);
public slots:
void close();
void connectToHost();
qint64 sendDatagram(const QByteArray &datagram);
private slots:
void checkCandidates();
void checkStun();
void readyRead();
signals:
/// \brief This signal is emitted once ICE negotiation succeeds.
void connected();
/// \brief This signal is emitted when a data packet is received.
void datagramReceived(const QByteArray &datagram);
/// \brief This signal is emitted when the list of local candidates changes.
void localCandidatesChanged();
private:
class Pair {
public:
Pair();
QString toString() const;
QIODevice::OpenMode checked;
quint32 priority;
QXmppJingleCandidate remote;
QXmppJingleCandidate reflexive;
QByteArray transaction;
QUdpSocket *socket;
};
Pair *addRemoteCandidate(QUdpSocket *socket, const QHostAddress &host, quint16 port);
qint64 writeStun(const QXmppStunMessage &message, QXmppIceComponent::Pair *pair);
int m_component;
QList<QXmppJingleCandidate> m_localCandidates;
QString m_localUser;
QString m_localPassword;
Pair *m_activePair;
Pair *m_fallbackPair;
bool m_iceControlling;
QList<Pair*> m_pairs;
QString m_remoteUser;
QString m_remotePassword;
QList<QUdpSocket*> m_sockets;
QTimer *m_timer;
// STUN server
QByteArray m_stunId;
QHostAddress m_stunHost;
quint16 m_stunPort;
QTimer *m_stunTimer;
int m_stunTries;
};
/// \brief The QXmppIceConnection class represents a set of UDP sockets
/// capable of performing Interactive Connectivity Establishment (RFC 5245).
///
class QXmppIceConnection : public QXmppLoggable
{
Q_OBJECT
public:
QXmppIceConnection(bool controlling, QObject *parent = 0);
QXmppIceComponent *component(int component);
void addComponent(int component);
QList<QXmppJingleCandidate> localCandidates() const;
QString localUser() const;
QString localPassword() const;
void addRemoteCandidate(const QXmppJingleCandidate &candidate);
void setRemoteUser(const QString &user);
void setRemotePassword(const QString &password);
void setStunServer(const QHostAddress &host, quint16 port = 3478);
bool bind(const QList<QHostAddress> &addresses);
bool isConnected() const;
signals:
/// \brief This signal is emitted once ICE negotiation succeeds.
void connected();
/// \brief This signal is emitted when ICE negotiation fails.
void disconnected();
/// \brief This signal is emitted when the list of local candidates changes.
void localCandidatesChanged();
public slots:
void close();
void connectToHost();
private slots:
void slotConnected();
void slotTimeout();
private:
QTimer *m_connectTimer;
bool m_controlling;
QMap<int, QXmppIceComponent*> m_components;
QString m_localUser;
QString m_localPassword;
QHostAddress m_stunHost;
quint16 m_stunPort;
};
#endif
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