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// SPDX-FileCopyrightText: 2015 Jeremy Lainé <jeremy.laine@m4x.org>
//
// SPDX-License-Identifier: LGPL-2.1-or-later
#ifndef QXMPPSTUN_P_H
#define QXMPPSTUN_P_H
#include "QXmppStun.h"
class QUdpSocket;
class QTimer;
//
// W A R N I N G
// -------------
//
// This file is not part of the QXmpp API.
//
// This header file may change from version to version without notice,
// or even be removed.
//
// We mean it.
//
///
/// 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;
Q_SIGNALS:
void finished();
void writeStun(const QXmppStunMessage &request);
public Q_SLOTS:
void readStun(const QXmppStunMessage &response);
private Q_SLOTS:
void retry();
private:
QXmppStunMessage m_request;
QXmppStunMessage m_response;
QTimer *m_retryTimer;
int m_tries;
};
class QXMPP_EXPORT QXmppIceTransport : public QXmppLoggable
{
Q_OBJECT
public:
QXmppIceTransport(QObject *parent = nullptr);
~QXmppIceTransport() override;
virtual QXmppJingleCandidate localCandidate(int component) const = 0;
virtual qint64 writeDatagram(const QByteArray &data, const QHostAddress &host, quint16 port) = 0;
public Q_SLOTS:
virtual void disconnectFromHost() = 0;
Q_SIGNALS:
/// \brief This signal is emitted when a data packet is received.
void datagramReceived(const QByteArray &data, const QHostAddress &host, quint16 port);
};
///
/// The QXmppTurnAllocation class represents a TURN allocation as defined
/// by RFC 5766 Traversal Using Relays around NAT (TURN).
///
class QXMPP_EXPORT QXmppTurnAllocation : public QXmppIceTransport
{
Q_OBJECT
public:
enum AllocationState {
UnconnectedState,
ConnectingState,
ConnectedState,
ClosingState
};
QXmppTurnAllocation(QObject *parent = nullptr);
~QXmppTurnAllocation() override;
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);
QXmppJingleCandidate localCandidate(int component) const override;
qint64 writeDatagram(const QByteArray &data, const QHostAddress &host, quint16 port) override;
Q_SIGNALS:
/// \brief This signal is emitted once TURN allocation succeeds.
void connected();
/// \brief This signal is emitted when TURN allocation fails.
void disconnected();
public Q_SLOTS:
void connectToHost();
void disconnectFromHost() override;
private Q_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;
};
///
/// The QXmppUdpTransport class represents a UDP transport.
///
class QXMPP_EXPORT QXmppUdpTransport : public QXmppIceTransport
{
Q_OBJECT
public:
QXmppUdpTransport(QUdpSocket *socket, QObject *parent = nullptr);
~QXmppUdpTransport() override;
QXmppJingleCandidate localCandidate(int component) const override;
qint64 writeDatagram(const QByteArray &data, const QHostAddress &host, quint16 port) override;
public Q_SLOTS:
void disconnectFromHost() override;
private Q_SLOTS:
void readyRead();
private:
QUdpSocket *m_socket;
};
#endif
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