\inmodule QtNetwork More...

#include <qhttp2connection_p.h>

Inheritance diagram for QHttp2Connection:

Collaboration diagram for QHttp2Connection:

Public Types
enum class	CreateStreamError { MaxConcurrentStreamsReached , StreamIdsExhausted , ReceivedGOAWAY }

enum class	PingState { Ping , PongSignatureIdentical , PongSignatureChanged , PongNoPingSent }

Public Slots
bool	sendPing ()

bool	sendPing (QByteArrayView data)

void	handleReadyRead ()
	This function must be called when you have received a readyRead signal (or equivalent) from the QIODevice.

void	handleConnectionClosure ()
	This function must be called when the socket has been disconnected, and will end all remaining streams with an error.

Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

Signals
void	newIncomingStream (QHttp2Stream *stream)
	This signal is emitted when a new stream is received from the remote peer.

void	newPromisedStream (QHttp2Stream *stream)
	This signal is emitted when the remote peer has promised a new stream.

void	errorReceived ()
	This signal is emitted when the connection has received an error.

void	connectionClosed ()
	This signal is emitted when the connection has been closed.

void	settingsFrameReceived ()
	This signal is emitted when the connection has received a SETTINGS frame.

void	pingFrameRecived (QHttp2Connection::PingState state)

void	errorOccurred (Http2::Http2Error errorCode, const QString &errorString)
	This signal is emitted when the connection has encountered an error.

void	receivedGOAWAY (quint32 errorCode, quint32 lastStreamID)
	This signal is emitted when the connection has received a GOAWAY frame.

Signals inherited from QObject
void	destroyed (QObject *=nullptr)
	This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.

void	objectNameChanged (const QString &objectName, QPrivateSignal)
	This signal is emitted after the object's name has been changed.

Public Member Functions
	~QHttp2Connection ()

QH2Expected< QHttp2Stream *, CreateStreamError >	createStream ()
	Creates a stream on this connection.

QHttp2Stream *	getStream (quint32 streamId) const
	Return a pointer to a stream with the given streamID, or null if no such stream exists or it was deleted.

QHttp2Stream *	promisedStream (const QUrl &streamKey) const
	Returns a pointer to the stream that was promised with the given streamKey, if any.

void	close ()
	This sends a GOAWAY frame on the connection stream, gracefully closing the connection.

bool	isGoingAway () const noexcept
	Returns `true` if the connection is in the process of being closed, or `false` otherwise.

quint32	maxConcurrentStreams () const noexcept
	Returns the maximum number of concurrent streams we are allowed to have active at any given time.

quint32	maxHeaderListSize () const noexcept
	Returns the maximum size of the header which the peer is willing to accept.

bool	isUpgradedConnection () const noexcept
	Returns `true` if this connection was created as a result of an HTTP/1 upgrade to HTTP/2, or `false` otherwise.

Public Member Functions inherited from QObject
Q_INVOKABLE	QObject (QObject *parent=nullptr)
	Constructs an object with parent object parent.

virtual	~QObject ()
	Destroys the object, deleting all its child objects.

virtual bool	event (QEvent *event)
	This virtual function receives events to an object and should return true if the event e was recognized and processed.

virtual bool	eventFilter (QObject watched, QEvent event)
	Filters events if this object has been installed as an event filter for the watched object.

QString	objectName () const

Q_WEAK_OVERLOAD void	setObjectName (const QString &name)
	Sets the object's name to name.

void	setObjectName (QAnyStringView name)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QBindable< QString >	bindableObjectName ()

bool	isWidgetType () const
	Returns `true` if the object is a widget; otherwise returns `false`.

bool	isWindowType () const
	Returns `true` if the object is a window; otherwise returns `false`.

bool	isQuickItemType () const
	Returns `true` if the object is a QQuickItem; otherwise returns `false`.

bool	signalsBlocked () const noexcept
	Returns `true` if signals are blocked; otherwise returns `false`.

bool	blockSignals (bool b) noexcept
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).

QThread *	thread () const
	Returns the thread in which the object lives.

bool	moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
	Changes the thread affinity for this object and its children and returns `true` on success.

int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
	This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.

int	startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)

void	killTimer (int id)
	Kills the timer with timer identifier, id.

void	killTimer (Qt::TimerId id)

template<typename T >
T	findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.

template<typename T >
QList< T >	findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.

template<typename T >
T	findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

template<typename T >
QList< T >	findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const QObjectList &	children () const
	Returns a list of child objects.

void	setParent (QObject *parent)
	Makes the object a child of parent.

void	installEventFilter (QObject *filterObj)
	Installs an event filter filterObj on this object.

void	removeEventFilter (QObject *obj)
	Removes an event filter object obj from this object.

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=nullptr, const QObject receiver=nullptr, const char *member=nullptr) const

bool	disconnect (const QObject receiver, const char member=nullptr) const

void	dumpObjectTree () const
	Dumps a tree of children to the debug output.

void	dumpObjectInfo () const
	Dumps information about signal connections, etc.

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value.

bool	setProperty (const char *name, QVariant &&value)

QVariant	property (const char *name) const
	Returns the value of the object's name property.

QList< QByteArray >	dynamicPropertyNames () const

QBindingStorage *	bindingStorage ()

const QBindingStorage *	bindingStorage () const

QObject *	parent () const
	Returns a pointer to the parent object.

bool	inherits (const char *classname) const
	Returns `true` if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns `false`.

Static Public Member Functions
static QHttp2Connection *	createUpgradedConnection (QIODevice *socket, const QHttp2Configuration &config)
	Create a new HTTP2 connection given a config and a socket.

static QHttp2Connection *	createDirectConnection (QIODevice *socket, const QHttp2Configuration &config)
	Create a new HTTP2 connection given a config and a socket.

static QHttp2Connection *	createDirectServerConnection (QIODevice *socket, const QHttp2Configuration &config)
	Create a new HTTP2 connection given a config and a socket.

Static Public Member Functions inherited from QObject
static QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	\threadsafe

static QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	\threadsafe

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static bool	disconnect (const QMetaObject::Connection &)
	Disconnect a connection.

template<typename Func1 , typename Func2 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object receiver, Func2 slot)

template<typename Func1 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject receiver, void **zero)

Friends
class	QHttp2Stream

Additional Inherited Members
Protected Member Functions inherited from QObject
QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.

int	senderSignalIndex () const

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal.

bool	isSignalConnected (const QMetaMethod &signal) const

virtual void	timerEvent (QTimerEvent *event)
	This event handler can be reimplemented in a subclass to receive timer events for the object.

virtual void	childEvent (QChildEvent *event)
	This event handler can be reimplemented in a subclass to receive child events.

virtual void	customEvent (QEvent *event)
	This event handler can be reimplemented in a subclass to receive custom events.

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	disconnectNotify (const QMetaMethod &signal)

	QObject (QObjectPrivate &dd, QObject *parent=nullptr)

Protected Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Properties inherited from QObject
QString	objectName
	the name of this object

Related Symbols inherited from QObject
template< class T > T	qobject_cast (const QObject *object)
	Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.

template< typename T > T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

template< typename T > QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

	QObjectList
	\macro Q_CLASSINFO(Name, Value)

Detailed Description

\inmodule QtNetwork

The QHttp2Connection class represents a HTTP/2 connection. It can only be created through the static functions createDirectConnection(), createUpgradedConnection(), and createDirectServerConnection().

createDirectServerConnection() is used for server-side connections, and has certain limitations that a client does not.

As a client you can create a QHttp2Stream with createStream().

See also: QHttp2Stream

Definition at line 189 of file qhttp2connection_p.h.

Member Enumeration Documentation

◆ CreateStreamError

enum class QHttp2Connection::CreateStreamError

strong

Enumerator
MaxConcurrentStreamsReached
StreamIdsExhausted
ReceivedGOAWAY

Definition at line 195 of file qhttp2connection_p.h.

◆ PingState

enum class QHttp2Connection::PingState

strong

Enumerator
Ping
PongSignatureIdentical
PongSignatureChanged
PongNoPingSent

Definition at line 202 of file qhttp2connection_p.h.

Constructor & Destructor Documentation

◆ ~QHttp2Connection()

QHttp2Connection::~QHttp2Connection ( )

noexcept

Definition at line 914 of file qhttp2connection.cpp.

Member Function Documentation

◆ close()

void QHttp2Connection::close ( )

inline

This sends a GOAWAY frame on the connection stream, gracefully closing the connection.

Definition at line 229 of file qhttp2connection_p.h.

References Http2::HTTP2_NO_ERROR.

Referenced by handleReadyRead().

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◆ connectionClosed

void QHttp2Connection::connectionClosed ( )

signal

This signal is emitted when the connection has been closed.

◆ createDirectConnection()

QHttp2Connection * QHttp2Connection::createDirectConnection	(	QIODevice *	socket,
		const QHttp2Configuration &	config )

static

Create a new HTTP2 connection given a config and a socket.

This function will immediately send the client preface.

The object returned will be a child to the socket, or null on failure.

Definition at line 749 of file qhttp2connection.cpp.

References connection, qCWarning, and socket.

◆ createDirectServerConnection()

QHttp2Connection * QHttp2Connection::createDirectServerConnection	(	QIODevice *	socket,
		const QHttp2Configuration &	config )

static

Create a new HTTP2 connection given a config and a socket.

The object returned will be a child to the socket, or null on failure.

Definition at line 769 of file qhttp2connection.cpp.

References connection, and socket.

◆ createStream()

QH2Expected< QHttp2Stream *, QHttp2Connection::CreateStreamError > QHttp2Connection::createStream ( )

Creates a stream on this connection.

Automatically picks the next available stream ID and returns a pointer to the new stream, if possible. Otherwise returns an error.

See also: QHttp2Connection::CreateStreamError, QHttp2Stream

Definition at line 791 of file qhttp2connection.cpp.

References Http2::lastValidStreamID(), Q_ASSERT, and StreamIdsExhausted.

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◆ createUpgradedConnection()

QHttp2Connection * QHttp2Connection::createUpgradedConnection	(	QIODevice *	socket,
		const QHttp2Configuration &	config )

static

Create a new HTTP2 connection given a config and a socket.

This function assumes that the Upgrade headers etc. in http/1 have already been sent and that the connection is already upgraded to http/2.

The object returned will be a child to the socket, or null on failure.

Definition at line 720 of file qhttp2connection.cpp.

References connection, QHttp2Stream::HalfClosedLocal, Q_ASSERT, qCWarning, and socket.

◆ errorOccurred

void QHttp2Connection::errorOccurred	(	Http2::Http2Error	errorCode,
		const QString &	errorString )

signal

This signal is emitted when the connection has encountered an error.

The errorCode parameter is the HTTP/2 error code, and the errorString parameter is a human-readable description of the error.

◆ errorReceived

void QHttp2Connection::errorReceived ( )

signal

This signal is emitted when the connection has received an error.

◆ getStream()

QHttp2Stream * QHttp2Connection::getStream ( quint32 streamId ) const

Return a pointer to a stream with the given streamID, or null if no such stream exists or it was deleted.

Definition at line 855 of file qhttp2connection.cpp.

References QHash< Key, T >::value().

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◆ handleConnectionClosure

void QHttp2Connection::handleConnectionClosure ( )

slot

This function must be called when the socket has been disconnected, and will end all remaining streams with an error.

Definition at line 1072 of file qhttp2connection.cpp.

References QHash< Key, T >::begin(), QHash< Key, T >::end(), it, QNetworkReply::RemoteHostClosedError, and QCoreApplication::translate().

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◆ handleReadyRead

void QHttp2Connection::handleReadyRead ( )

slot

This function must be called when you have received a readyRead signal (or equivalent) from the QIODevice.

It will read and process any incoming HTTP/2 frames and emit signals as appropriate.

Definition at line 975 of file qhttp2connection.cpp.

References QAbstractSocket::bytesAvailable(), QHash< Key, T >::cbegin(), QHash< Key, T >::cend(), close(), Http2::FRAME_SIZE_ERROR, Http2::FrameReader::inboundFrame(), Http2::PROTOCOL_ERROR, Q_ASSERT, qCDebug, Http2::FrameReader::read(), socket, and Http2::Frame::type().

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◆ isGoingAway()

bool QHttp2Connection::isGoingAway ( ) const

inlinenoexcept

Returns true if the connection is in the process of being closed, or false otherwise.

Definition at line 231 of file qhttp2connection_p.h.

◆ isUpgradedConnection()

bool QHttp2Connection::isUpgradedConnection ( ) const

inlinenoexcept

Returns true if this connection was created as a result of an HTTP/1 upgrade to HTTP/2, or false otherwise.

Definition at line 236 of file qhttp2connection_p.h.

◆ maxConcurrentStreams()

quint32 QHttp2Connection::maxConcurrentStreams ( ) const

inlinenoexcept

Returns the maximum number of concurrent streams we are allowed to have active at any given time.

This is a directional setting, and the remote peer may have a different value.

Definition at line 233 of file qhttp2connection_p.h.

◆ maxHeaderListSize()

quint32 QHttp2Connection::maxHeaderListSize ( ) const

inlinenoexcept

Returns the maximum size of the header which the peer is willing to accept.

Definition at line 234 of file qhttp2connection_p.h.

Referenced by QHttp2Stream::sendHEADERS().

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◆ newIncomingStream

void QHttp2Connection::newIncomingStream ( QHttp2Stream * stream )

signal

This signal is emitted when a new stream is received from the remote peer.

◆ newPromisedStream

void QHttp2Connection::newPromisedStream ( QHttp2Stream * stream )

signal

This signal is emitted when the remote peer has promised a new stream.

◆ pingFrameRecived

void QHttp2Connection::pingFrameRecived ( QHttp2Connection::PingState state )

signal

◆ promisedStream()

QHttp2Stream * QHttp2Connection::promisedStream ( const QUrl & streamKey ) const

inline

Returns a pointer to the stream that was promised with the given streamKey, if any.

Otherwise, returns null.

Definition at line 222 of file qhttp2connection_p.h.

◆ receivedGOAWAY

void QHttp2Connection::receivedGOAWAY	(	quint32	errorCode,
		quint32	lastStreamID )

signal

This signal is emitted when the connection has received a GOAWAY frame.

The errorCode parameter is the HTTP/2 error code, and the lastStreamID parameter is the last stream ID that the remote peer will process.

Any streams of a higher stream ID created by us will be ignored or reset.

◆ sendPing [1/2]

bool QHttp2Connection::sendPing ( )

slot

Definition at line 944 of file qhttp2connection.cpp.

References QRandomGenerator::generate(), and sendPing().

Referenced by sendPing().

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◆ sendPing [2/2]

bool QHttp2Connection::sendPing ( QByteArrayView data )

slot

Definition at line 953 of file qhttp2connection.cpp.

References Http2::FrameWriter::append(), Http2::connectionStreamID, Q_ASSERT, qCWarning, Http2::FrameWriter::start(), and Http2::FrameWriter::write().

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◆ settingsFrameReceived

void QHttp2Connection::settingsFrameReceived ( )

signal

This signal is emitted when the connection has received a SETTINGS frame.

Friends And Related Symbol Documentation

◆ QHttp2Stream

friend class QHttp2Stream

friend

Definition at line 254 of file qhttp2connection_p.h.

The documentation for this class was generated from the following files:

qtbase/src/network/access/qhttp2connection_p.h (5e19f4a8b218ae88494b3db157ce6415fd4dc1eb)
qtbase/src/network/access/qhttp2connection.cpp (2272e8f2284d475a6a43e10f4db711771e9bbc2a)

Public Types

Public Slots

Signals

Public Member Functions

Static Public Member Functions

Friends

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ CreateStreamError

◆ PingState

Constructor & Destructor Documentation

◆ ~QHttp2Connection()

Member Function Documentation

◆ close()

◆ connectionClosed

◆ createDirectConnection()

◆ createDirectServerConnection()

◆ createStream()

◆ createUpgradedConnection()

◆ errorOccurred

◆ errorReceived

◆ getStream()

◆ handleConnectionClosure

◆ handleReadyRead

◆ isGoingAway()

◆ isUpgradedConnection()

◆ maxConcurrentStreams()

◆ maxHeaderListSize()

◆ newIncomingStream

◆ newPromisedStream

◆ pingFrameRecived

◆ promisedStream()

◆ receivedGOAWAY

◆ sendPing [1/2]

◆ sendPing [2/2]

◆ settingsFrameReceived

Friends And Related Symbol Documentation

◆ QHttp2Stream