/usr/include/qxmpp/QXmppStun.h is in libqxmpp-dev 0.7.6-1.
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* Copyright (C) 2008-2012 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 QXMPP_EXPORT QXmppStunMessage
{
public:
enum MethodType {
Binding = 0x1,
SharedSecret = 0x2,
Allocate = 0x3,
Refresh = 0x4,
Send = 0x6,
Data = 0x7,
CreatePermission = 0x8,
ChannelBind = 0x9,
};
enum ClassType {
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 messageClass() const;
quint16 messageMethod() const;
quint16 type() const;
void setType(quint16 type);
// attributes
quint32 changeRequest() const;
void setChangeRequest(quint32 changeRequest);
quint16 channelNumber() const;
void setChannelNumber(quint16 channelNumber);
QByteArray data() const;
void setData(const QByteArray &data);
quint32 lifetime() const;
void setLifetime(quint32 changeRequest);
QByteArray nonce() const;
void setNonce(const QByteArray &nonce);
quint32 priority() const;
void setPriority(quint32 priority);
QString realm() const;
void setRealm(const QString &realm);
QByteArray reservationToken() const;
void setReservationToken(const QByteArray &reservationToken);
quint8 requestedTransport() const;
void setRequestedTransport(quint8 requestedTransport);
QString software() const;
void setSoftware(const QString &software);
QString username() const;
void setUsername(const QString &username);
QByteArray encode(const QByteArray &key = QByteArray(), bool addFingerprint = true) const;
bool decode(const QByteArray &buffer, const QByteArray &key = QByteArray(), 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;
QHostAddress xorPeerHost;
quint16 xorPeerPort;
QHostAddress xorRelayedHost;
quint16 xorRelayedPort;
bool useCandidate;
private:
quint32 m_cookie;
QByteArray m_id;
quint16 m_type;
// attributes
QSet<quint16> m_attributes;
quint32 m_changeRequest;
quint16 m_channelNumber;
QByteArray m_data;
quint32 m_lifetime;
QByteArray m_nonce;
quint32 m_priority;
QString m_realm;
quint8 m_requestedTransport;
QByteArray m_reservationToken;
QString m_software;
QString m_username;
};
/// \internal
///
/// The QXmppStunTransaction class represents a STUN transaction.
///
class QXMPP_EXPORT QXmppStunTransaction : public QXmppLoggable
{
Q_OBJECT
public:
QXmppStunTransaction(const QXmppStunMessage &request, QObject *parent);
QXmppStunMessage request() const;
QXmppStunMessage response() const;
signals:
void finished();
void writeStun(const QXmppStunMessage &request);
public slots:
void readStun(const QXmppStunMessage &response);
private slots:
void retry();
private:
QXmppStunMessage m_request;
QXmppStunMessage m_response;
QTimer *m_retryTimer;
int m_tries;
};
/// \internal
///
/// The QXmppTurnAllocation class represents a TURN allocation as defined
/// by RFC 5766 Traversal Using Relays around NAT (TURN).
///
class QXMPP_EXPORT QXmppTurnAllocation : public QXmppLoggable
{
Q_OBJECT
public:
enum AllocationState
{
UnconnectedState,
ConnectingState,
ConnectedState,
ClosingState,
};
QXmppTurnAllocation(QObject *parent = 0);
~QXmppTurnAllocation();
QHostAddress relayedHost() const;
quint16 relayedPort() const;
AllocationState state() const;
void setServer(const QHostAddress &host, quint16 port = 3478);
void setUser(const QString &user);
void setPassword(const QString &password);
qint64 writeDatagram(const QByteArray &data, const QHostAddress &host, quint16 port);
signals:
/// \brief This signal is emitted once TURN allocation succeeds.
void connected();
/// \brief This signal is emitted when a data packet is received.
void datagramReceived(const QByteArray &data, const QHostAddress &host, quint16 port);
/// \brief This signal is emitted when TURN allocation fails.
void disconnected();
public slots:
void connectToHost();
void disconnectFromHost();
private slots:
void readyRead();
void refresh();
void refreshChannels();
void transactionFinished();
void writeStun(const QXmppStunMessage &message);
private:
void handleDatagram(const QByteArray &datagram, const QHostAddress &host, quint16 port);
void setState(AllocationState state);
QUdpSocket *socket;
QTimer *m_timer;
QTimer *m_channelTimer;
QString m_password;
QString m_username;
QHostAddress m_relayedHost;
quint16 m_relayedPort;
QHostAddress m_turnHost;
quint16 m_turnPort;
// channels
typedef QPair<QHostAddress, quint16> Address;
quint16 m_channelNumber;
QMap<quint16, Address> m_channels;
// state
quint32 m_lifetime;
QByteArray m_key;
QString m_realm;
QByteArray m_nonce;
AllocationState m_state;
QList<QXmppStunTransaction*> m_transactions;
};
/// \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 QXMPP_EXPORT QXmppIceComponent : public QXmppLoggable
{
Q_OBJECT
public:
QXmppIceComponent(QObject *parent=0);
~QXmppIceComponent();
void setIceControlling(bool controlling);
void setStunServer(const QHostAddress &host, quint16 port);
void setTurnServer(const QHostAddress &host, quint16 port);
void setTurnUser(const QString &user);
void setTurnPassword(const QString &password);
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 handleDatagram(const QByteArray &datagram, const QHostAddress &host, quint16 port, QUdpSocket *socket = 0);
void readyRead();
void turnConnected();
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(int component, bool controlling);
quint64 priority() const;
QString toString() const;
QIODevice::OpenMode checked;
QXmppJingleCandidate remote;
QXmppJingleCandidate reflexive;
QByteArray transaction;
QUdpSocket *socket;
private:
int m_component;
bool m_controlling;
};
Pair *addRemoteCandidate(QUdpSocket *socket, const QHostAddress &host, quint16 port, quint32 priority);
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;
quint32 m_peerReflexivePriority;
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;
// TURN server
QXmppTurnAllocation *m_turnAllocation;
bool m_turnConfigured;
};
/// \brief The QXmppIceConnection class represents a set of UDP sockets
/// capable of performing Interactive Connectivity Establishment (RFC 5245).
///
class QXMPP_EXPORT QXmppIceConnection : public QXmppLoggable
{
Q_OBJECT
public:
QXmppIceConnection(QObject *parent = 0);
QXmppIceComponent *component(int component);
void addComponent(int component);
void setIceControlling(bool controlling);
QList<QXmppJingleCandidate> localCandidates() const;
QString localUser() const;
void setLocalUser(const QString &user);
QString localPassword() const;
void setLocalPassword(const QString &password);
void addRemoteCandidate(const QXmppJingleCandidate &candidate);
void setRemoteUser(const QString &user);
void setRemotePassword(const QString &password);
void setStunServer(const QHostAddress &host, quint16 port = 3478);
void setTurnServer(const QHostAddress &host, quint16 port = 3478);
void setTurnUser(const QString &user);
void setTurnPassword(const QString &password);
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_iceControlling;
QMap<int, QXmppIceComponent*> m_components;
QString m_localUser;
QString m_localPassword;
QHostAddress m_stunHost;
quint16 m_stunPort;
QHostAddress m_turnHost;
quint16 m_turnPort;
QString m_turnUser;
QString m_turnPassword;
};
#endif
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