\inmodule QtNetwork More...

#include <qhttp2connection_p.h>

Inheritance diagram for QHttp2Stream:

Collaboration diagram for QHttp2Stream:

Public Types
enum class	State { Idle , ReservedRemote , Open , HalfClosedLocal , HalfClosedRemote , Closed }

Public Slots
bool	sendRST_STREAM (quint32 errorCode)
	Sends a RST_STREAM frame with the given errorCode.

bool	sendHEADERS (const HPack::HttpHeader &headers, bool endStream, quint8 priority=DefaultPriority)
	Sends a HEADERS frame with the given headers and priority.

void	sendDATA (QIODevice *device, bool endStream)
	Sends a DATA frame with the bytes obtained from device.

void	sendDATA (QNonContiguousByteDevice *device, bool endStream)
	Sends a DATA frame with the bytes obtained from device.

void	sendWINDOW_UPDATE (quint32 delta)
	Sends a WINDOW_UPDATE frame with the given delta.

Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

Signals
void	headersReceived (const HPack::HttpHeader &headers, bool endStream)
	This signal is emitted when the remote peer has sent a HEADERS frame, and potentially some CONTINUATION frames, ending with the END_HEADERS flag to this stream.

void	headersUpdated ()
	This signal may be emitted if a new HEADERS frame was received after already processing a previous HEADERS frame.

void	errorOccurred (quint32 errorCode, const QString &errorString)
	This signal is emitted when the stream has encountered an error.

void	stateChanged (QHttp2Stream::State newState)
	This signal is emitted when the state of the stream changes.

void	promisedStreamReceived (quint32 newStreamID)
	This signal is emitted when the remote peer has promised a new stream with the given newStreamID.

void	uploadBlocked ()
	This signal is emitted when the stream is unable to send more data because the remote peer's receive window is full.

void	dataReceived (const QByteArray &data, bool endStream)
	This signal is emitted when the stream has received a DATA frame from the remote peer.

void	bytesWritten (qint64 bytesWritten)
	This signal is emitted when the stream has written bytesWritten bytes to the network.

void	uploadDeviceError (const QString &errorString)
	This signal is emitted if the upload device encounters an error while sending data.

void	uploadFinished ()
	This signal is emitted when the stream has finished sending all the data from the upload device.

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
	~QHttp2Stream () noexcept

quint32	streamID () const noexcept
	Returns the stream ID of this stream.

bool	isUploadBlocked () const noexcept
	Returns `true` if the stream is currently unable to send more data because the remote peer's receive window is full.

bool	isUploadingDATA () const noexcept
	Returns `true` if the stream is currently sending DATA frames.

State	state () const noexcept
	Returns the current state of the stream.

bool	isActive () const noexcept
	Returns `true` if the stream has been opened and is not yet closed.

bool	isPromisedStream () const noexcept
	Returns `true` if the stream was promised by the remote peer.

bool	wasReset () const noexcept
	Returns `true` if the stream was reset by the remote peer.

quint32	RST_STREAM_code () const noexcept
	Returns the HTTP/2 error code if the stream was reset by the remote peer.

HPack::HttpHeader	receivedHeaders () const noexcept
	Returns the headers received from the remote peer, if any.

QByteDataBuffer	downloadBuffer () const noexcept
	Returns the buffer containing the data received from the remote peer.

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 Attributes
static constexpr quint8	DefaultPriority = 127

Friends
class	QHttp2Connection

Additional Inherited Members
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)

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 QHttp2Stream class represents a single HTTP/2 stream. Must be created by QHttp2Connection.

See also: QHttp2Connection

Definition at line 90 of file qhttp2connection_p.h.

Member Enumeration Documentation

◆ State

enum class QHttp2Stream::State

strong

Enumerator
Idle
ReservedRemote
Open
HalfClosedLocal
HalfClosedRemote
Closed

Definition at line 96 of file qhttp2connection_p.h.

Constructor & Destructor Documentation

◆ ~QHttp2Stream()

QHttp2Stream::~QHttp2Stream ( )

defaultnoexcept

Member Function Documentation

◆ bytesWritten

void QHttp2Stream::bytesWritten ( qint64 bytesWritten )

signal

This signal is emitted when the stream has written bytesWritten bytes to the network.

◆ dataReceived

void QHttp2Stream::dataReceived	(	const QByteArray &	data,
		bool	endStream )

signal

This signal is emitted when the stream has received a DATA frame from the remote peer.

The data parameter contains the payload of the frame, and the endStream parameter is true if the END_STREAM flag was set.

See also: downloadBuffer()

◆ downloadBuffer()

QByteDataBuffer QHttp2Stream::downloadBuffer ( ) const

inlinenoexcept

Returns the buffer containing the data received from the remote peer.

Definition at line 116 of file qhttp2connection_p.h.

◆ errorOccurred

void QHttp2Stream::errorOccurred	(	quint32	errorCode,
		const QString &	errorString )

signal

This signal is emitted when the stream 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.

See also: https://www.rfc-editor.org/rfc/rfc7540#section-7

◆ headersReceived

void QHttp2Stream::headersReceived	(	const HPack::HttpHeader &	headers,
		bool	endStream )

signal

This signal is emitted when the remote peer has sent a HEADERS frame, and potentially some CONTINUATION frames, ending with the END_HEADERS flag to this stream.

The headers are internally combined and decompressed, and are accessible through the headers parameter. If the END_STREAM flag was set, the endStream parameter will be true, indicating that the peer does not intend to send any more frames on this stream.

See also: receivedHeaders()

◆ headersUpdated

void QHttp2Stream::headersUpdated ( )

signal

This signal may be emitted if a new HEADERS frame was received after already processing a previous HEADERS frame.

See also: headersReceived(), receivedHeaders()

◆ isActive()

bool QHttp2Stream::isActive ( ) const

inlinenoexcept

Returns true if the stream has been opened and is not yet closed.

Definition at line 109 of file qhttp2connection_p.h.

◆ isPromisedStream()

bool QHttp2Stream::isPromisedStream ( ) const

inlinenoexcept

Returns true if the stream was promised by the remote peer.

Definition at line 110 of file qhttp2connection_p.h.

◆ isUploadBlocked()

bool QHttp2Stream::isUploadBlocked ( ) const

noexcept

Returns true if the stream is currently unable to send more data because the remote peer's receive window is full.

Definition at line 422 of file qhttp2connection.cpp.

References Http2::frameHeaderSize, and isUploadingDATA().

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◆ isUploadingDATA()

bool QHttp2Stream::isUploadingDATA ( ) const

inlinenoexcept

Returns true if the stream is currently sending DATA frames.

Definition at line 107 of file qhttp2connection_p.h.

Referenced by isUploadBlocked().

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◆ promisedStreamReceived

void QHttp2Stream::promisedStreamReceived ( quint32 newStreamID )

signal

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

See also: QHttp2Connection::promisedStream()

◆ receivedHeaders()

HPack::HttpHeader QHttp2Stream::receivedHeaders ( ) const

inlinenoexcept

Returns the headers received from the remote peer, if any.

Definition at line 114 of file qhttp2connection_p.h.

◆ RST_STREAM_code()

quint32 QHttp2Stream::RST_STREAM_code ( ) const

inlinenoexcept

Returns the HTTP/2 error code if the stream was reset by the remote peer.

If the stream was not reset, this function returns 0.

Definition at line 112 of file qhttp2connection_p.h.

◆ sendDATA [1/2]

void QHttp2Stream::sendDATA	(	QIODevice *	device,
		bool	endStream )

slot

Sends a DATA frame with the bytes obtained from device.

This function will send as many DATA frames as needed to send all the data from device. If endStream is true, the END_STREAM flag will be set.

device must stay alive for the duration of the upload. A way of doing this is to heap-allocate the device and parent it to the QHttp2Stream.

Definition at line 247 of file qhttp2connection.cpp.

References QObject::connect(), QNonContiguousByteDeviceFactory::create(), QObject::deleteLater(), device, HalfClosedRemote, Open, Q_ASSERT, qCDebug, sendDATA(), and uploadFinished().

Referenced by sendDATA().

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◆ sendDATA [2/2]

void QHttp2Stream::sendDATA	(	QNonContiguousByteDevice *	device,
		bool	endStream )

slot

Sends a DATA frame with the bytes obtained from device.

This function will send as many DATA frames as needed to send all the data from device. If endStream is true, the END_STREAM flag will be set.

device must stay alive for the duration of the upload. A way of doing this is to heap-allocate the device and parent it to the QHttp2Stream.

Definition at line 274 of file qhttp2connection.cpp.

References QObject::connect(), QObject::destroyed(), device, HalfClosedRemote, Open, Q_ASSERT, qCDebug, and QNonContiguousByteDevice::readyRead().

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◆ sendHEADERS

bool QHttp2Stream::sendHEADERS	(	const HPack::HttpHeader &	headers,
		bool	endStream,
		quint8	priority = DefaultPriority )

slot

Sends a HEADERS frame with the given headers and priority.

If endStream is true, the END_STREAM flag will be set, and the stream will be closed for future writes. If the headers are too large, or the stream is not in the correct state, this function will return false. Otherwise, it will return true.

Definition at line 442 of file qhttp2connection.cpp.

References Http2::FrameWriter::addFlag(), Http2::FrameWriter::append(), Http2::Frame::buffer, connection, HalfClosedRemote, QHttp2Connection::maxHeaderListSize(), Open, Http2::FrameWriter::outboundFrame(), Q_ASSERT, qCDebug, socket, Http2::FrameWriter::start(), streamID(), and Http2::FrameWriter::writeHEADERS().

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◆ sendRST_STREAM

bool QHttp2Stream::sendRST_STREAM ( quint32 errorCode )

slot

Sends a RST_STREAM frame with the given errorCode.

This closes the stream for both sides, any further frames will be dropped.

Returns false if the stream is closed or idle, also if it fails to send the RST_STREAM frame. Otherwise, returns true.

Definition at line 222 of file qhttp2connection.cpp.

References Http2::FrameWriter::append(), Closed, connection, Idle, qCDebug, Http2::FrameWriter::start(), and Http2::FrameWriter::write().

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◆ sendWINDOW_UPDATE

void QHttp2Stream::sendWINDOW_UPDATE ( quint32 delta )

slot

Sends a WINDOW_UPDATE frame with the given delta.

This increases our receive window size for this stream, allowing the remote peer to send more data.

Definition at line 491 of file qhttp2connection.cpp.

References connection, and streamID().

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◆ state()

State QHttp2Stream::state ( ) const

inlinenoexcept

Returns the current state of the stream.

See also: stateChanged()

Definition at line 108 of file qhttp2connection_p.h.

◆ stateChanged

void QHttp2Stream::stateChanged ( QHttp2Stream::State newState )

signal

This signal is emitted when the state of the stream changes.

The newState parameter is the new state of the stream.

Examples of this is sending or receiving a frame with the END_STREAM flag. This will transition the stream to the HalfClosedLocal or HalfClosedRemote state, respectively.

See also: state()

◆ streamID()

quint32 QHttp2Stream::streamID ( ) const

inlinenoexcept

Returns the stream ID of this stream.

Definition at line 103 of file qhttp2connection_p.h.

Referenced by sendHEADERS(), and sendWINDOW_UPDATE().

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◆ uploadBlocked

void QHttp2Stream::uploadBlocked ( )

signal

This signal is emitted when the stream is unable to send more data because the remote peer's receive window is full.

This is mostly intended for diagnostics as there is no expectation that the user can do anything to react to this.

◆ uploadDeviceError

void QHttp2Stream::uploadDeviceError ( const QString & errorString )

signal

This signal is emitted if the upload device encounters an error while sending data.

The errorString parameter is a human-readable description of the error.

◆ uploadFinished

void QHttp2Stream::uploadFinished ( )

signal

This signal is emitted when the stream has finished sending all the data from the upload device.

If the END_STREAM flag was set for sendData() then the stream will be closed for further writes before this signal is emitted.

Referenced by sendDATA().

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◆ wasReset()

bool QHttp2Stream::wasReset ( ) const

inlinenoexcept

Returns true if the stream was reset by the remote peer.

Definition at line 111 of file qhttp2connection_p.h.

Friends And Related Symbol Documentation

◆ QHttp2Connection

friend class QHttp2Connection

friend

Definition at line 145 of file qhttp2connection_p.h.

Member Data Documentation

◆ DefaultPriority

constexpr quint8 QHttp2Stream::DefaultPriority = 127

staticconstexpr

Definition at line 98 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 Attributes

Friends

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ State

Constructor & Destructor Documentation

◆ ~QHttp2Stream()

Member Function Documentation

◆ bytesWritten

◆ dataReceived

◆ downloadBuffer()

◆ errorOccurred

◆ headersReceived

◆ headersUpdated

◆ isActive()

◆ isPromisedStream()

◆ isUploadBlocked()

◆ isUploadingDATA()

◆ promisedStreamReceived

◆ receivedHeaders()

◆ RST_STREAM_code()

◆ sendDATA [1/2]

◆ sendDATA [2/2]

◆ sendHEADERS

◆ sendRST_STREAM

◆ sendWINDOW_UPDATE

◆ state()

◆ stateChanged

◆ streamID()

◆ uploadBlocked

◆ uploadDeviceError

◆ uploadFinished

◆ wasReset()

Friends And Related Symbol Documentation

◆ QHttp2Connection

Member Data Documentation

◆ DefaultPriority