The QUdpSocket class provides a UDP socket. More...

Inheritance diagram for QtNetwork.QUdpSocket:

[legend]

Collaboration diagram for QtNetwork.QUdpSocket:

[legend]

Public Types
enum	BindFlag { DefaultForPlatform = 0, DontShareAddress = 2, ReuseAddressHint = 4, ShareAddress = 1 }
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Public Types inherited from QtNetwork.QAbstractSocket
enum	NetworkLayerProtocol { IPv4Protocol = 0, IPv6Protocol = 1, UnknownNetworkLayerProtocol = -1 }
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enum	SocketError { AddressInUseError = 8, ConnectionRefusedError = 0, DatagramTooLargeError = 6, HostNotFoundError = 2, NetworkError = 7, ProxyAuthenticationRequiredError = 12, ProxyConnectionClosedError = 15, ProxyConnectionRefusedError = 14, ProxyConnectionTimeoutError = 16, ProxyNotFoundError = 17, ProxyProtocolError = 18, RemoteHostClosedError = 1, SocketAccessError = 3, SocketAddressNotAvailableError = 9, SocketResourceError = 4, SocketTimeoutError = 5, SslHandshakeFailedError = 13, UnfinishedSocketOperationError = 11, UnknownSocketError = -1, UnsupportedSocketOperationError = 10 }
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enum	SocketOption { KeepAliveOption = 1, LowDelayOption = 0, MulticastLoopbackOption = 3, MulticastTtlOption = 2 }
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enum	SocketState { BoundState = 4, ClosingState = 6, ConnectedState = 3, ConnectingState = 2, HostLookupState = 1, ListeningState = 5, UnconnectedState = 0 }
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enum	SocketType { TcpSocket = 0, UdpSocket = 1, UnknownSocketType = -1 }
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Public Types inherited from QtCore.QIODevice
enum	OpenModeFlag { Append = 4, NotOpen = 0, ReadOnly = 1, ReadWrite = 3, Text = 16, Truncate = 8, Unbuffered = 32, WriteOnly = 2 }
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Public Member Functions
	QUdpSocket (QObject parent=null)


override void	CreateProxy ()

new bool	Bind (QHostAddress address, ushort port)


new bool	Bind (QHostAddress address, ushort port, QUdpSocket.BindFlag mode)


new bool	Bind (ushort port=0)


new bool	Bind (ushort port, QUdpSocket.BindFlag mode)


new bool	HasPendingDatagrams ()


new bool	JoinMulticastGroup (QHostAddress groupAddress)


new bool	JoinMulticastGroup (QHostAddress groupAddress, QNetworkInterface iface)


new bool	LeaveMulticastGroup (QHostAddress groupAddress)


new bool	LeaveMulticastGroup (QHostAddress groupAddress, QNetworkInterface iface)


new long	PendingDatagramSize ()


new long	ReadDatagram (Pointer< sbyte > data, long maxlen, QHostAddress host=null)


new long	ReadDatagram (Pointer< sbyte > data, long maxlen, QHostAddress host, ref ushort port)


new long	WriteDatagram (QByteArray datagram, QHostAddress host, ushort port)


new long	WriteDatagram (string data, long len, QHostAddress host, ushort port)


new void	Dispose ()

Public Member Functions inherited from QtNetwork.QAbstractSocket
	QAbstractSocket (QAbstractSocket.SocketType socketType, QObject parent)


new void	Abort ()


override bool	AtEnd ()


override long	BytesAvailable ()


override long	BytesToWrite ()


override bool	CanReadLine ()


override void	Close ()


new void	ConnectToHost (QHostAddress address, ushort port, QIODevice.OpenModeFlag mode=QIODevice.OpenModeFlag.ReadWrite)


new void	ConnectToHost (string hostName, ushort port, QIODevice.OpenModeFlag mode=QIODevice.OpenModeFlag.ReadWrite)


new void	DisconnectFromHost ()


new QAbstractSocket.SocketError	OnError ()


new bool	Flush ()


override bool	IsSequential ()


new bool	IsValid ()


new QHostAddress	LocalAddress ()


new ushort	LocalPort ()


new QHostAddress	PeerAddress ()


new string	PeerName ()


new ushort	PeerPort ()


new bool	SetSocketDescriptor (int socketDescriptor, QAbstractSocket.SocketState state=QAbstractSocket.SocketState.ConnectedState, QIODevice.OpenModeFlag openMode=QIODevice.OpenModeFlag.ReadWrite)


new void	SetSocketOption (QAbstractSocket.SocketOption option, object value)


new int	SocketDescriptor ()


new object	socketOption (QAbstractSocket.SocketOption option)


new QAbstractSocket.SocketType	socketType ()


new QAbstractSocket.SocketState	State ()


override bool	WaitForBytesWritten (int msecs=30000)


new bool	WaitForConnected (int msecs=30000)


new bool	WaitForDisconnected (int msecs=30000)


override bool	WaitForReadyRead (int msecs=30000)


new void	Dispose ()

Public Member Functions inherited from QtCore.QIODevice
	QIODevice ()


	QIODevice (QObject parent)


new string	ErrorString ()


new bool	GetChar (Pointer< sbyte > c)


new bool	IsOpen ()


new bool	IsReadable ()


new bool	IsTextModeEnabled ()


new bool	IsWritable ()


virtual bool	Open (QIODevice.OpenModeFlag mode)


new QIODevice.OpenModeFlag	OpenMode ()


new QByteArray	Peek (long maxlen)


new long	Peek (Pointer< sbyte > data, long maxlen)


virtual long	Pos ()


new bool	PutChar (sbyte c)


new QByteArray	Read (long maxlen)


new long	Read (Pointer< sbyte > data, long maxlen)


new QByteArray	ReadAll ()


new QByteArray	ReadLine (long maxlen=0)


new long	ReadLine (Pointer< sbyte > data, long maxlen)


virtual bool	Reset ()


virtual bool	Seek (long pos)


new void	SetTextModeEnabled (bool enabled)


virtual long	Size ()


new void	UngetChar (sbyte c)


new long	Write (QByteArray data)


new long	Write (string data)


new long	Write (string data, long len)


new void	Dispose ()

Public Member Functions inherited from QtCore.QObject
	QObject (QObject parent=null)


new bool	BlockSignals (bool b)


new System.Collections.Generic.List < QObject >	Children ()


new bool	Connect (QObject sender, string signal, string member, Qt.ConnectionType type=Qt.ConnectionType.AutoConnection)


new void	DeleteLater ()


new bool	Disconnect (QObject receiver, string member=null)


new bool	Disconnect (string signal=null, QObject receiver=null, string member=null)


new void	DumpObjectInfo ()


new void	DumpObjectTree ()


new System.Collections.Generic.List < QByteArray >	DynamicPropertyNames ()


virtual bool	OnEvent (QEvent arg1)


virtual bool	EventFilter (QObject arg1, QEvent arg2)


new bool	Inherits (string classname)


new void	InstallEventFilter (QObject arg1)


new bool	IsWidgetType ()


new void	KillTimer (int id)


new object	Property (string name)


new void	RemoveEventFilter (QObject arg1)


new bool	SetProperty (string name, object value)


new void	SetUserData (uint id, QObjectUserData data)

new bool	SignalsBlocked ()


new int	StartTimer (int interval)


new QObjectUserData	UserData (uint id)

new void	Dispose ()

Public Member Functions inherited from QtCore.Qt
delegate QTextStream	FuncQTextStreamQTextStream (QTextStream qTextStream)

delegate string	FuncStringQByteArray (QByteArray qByteArray)

delegate QByteArray	FuncQByteArrayString (string @string)

delegate void	ActionQtMsgTypeString (QtMsgType qtMsgType, string @string)

delegate QObject	FuncQObject ()

Static Public Member Functions
static string	Tr (string s, string c=null)

static string	Tr (string s, string c, int n)

static string	TrUtf8 (string s, string c=null)

static string	TrUtf8 (string s, string c, int n)

Static Public Member Functions inherited from QtNetwork.QAbstractSocket
static string	Tr (string s, string c=null)

static string	Tr (string s, string c, int n)

static string	TrUtf8 (string s, string c=null)

static string	TrUtf8 (string s, string c, int n)

Static Public Member Functions inherited from QtCore.QIODevice
static string	Tr (string s, string c=null)

static string	Tr (string s, string c, int n)

static string	TrUtf8 (string s, string c=null)

static string	TrUtf8 (string s, string c, int n)

Static Public Member Functions inherited from QtCore.QObject
static bool	Connect (QObject sender, QMetaMethod signal, QObject receiver, QMetaMethod method, Qt.ConnectionType type=Qt.ConnectionType.AutoConnection)


static bool	Connect (QObject sender, string signal, QObject receiver, string member, Qt.ConnectionType arg5=Qt.ConnectionType.AutoConnection)


static bool	Disconnect (QObject sender, QMetaMethod signal, QObject receiver, QMetaMethod member)


static bool	Disconnect (QObject sender, string signal, QObject receiver, string member)


static uint	RegisterUserData ()

static string	Tr (string s, string c=null)


static string	Tr (string s, string c, int n)


static string	TrUtf8 (string s, string c=null)


static string	TrUtf8 (string s, string c, int n)


Static Public Member Functions inherited from QtCore.Qt
static QDataStream	Write (QDataStream s, object p)

static QDataStream	Write (QDataStream arg1, QSizeF arg2)

static QTextStream	Write (QTextStream s, Qt.FuncQTextStreamQTextStream f)

static QDataStream	Write (QDataStream arg1, QPoint arg2)

static QDataStream	Write (QDataStream arg1, QLineF arg2)

static QDataStream	Write (QDataStream arg1, QPointF arg2)

static QDataStream	Write (QDataStream arg1, QChar arg2)

static QDataStream	Write (QDataStream arg1, QByteArray arg2)

static QDataStream	Write (QDataStream arg1, QEasingCurve arg2)

static QDataStream	Write (QDataStream arg1, QRectF arg2)

static QDataStream	Write (QDataStream arg1, QDateTime arg2)

static QDataStream	Write (QDataStream arg1, QUrl arg2)

static QDataStream	Write (QDataStream arg1, QTime arg2)

static QDataStream	Write (QDataStream arg1, QLocale arg2)

static QDataStream	Write (QDataStream arg1, QBitArray arg2)

static QDataStream	Write (QDataStream arg1, QUuid arg2)

static QDataStream	Write (QDataStream arg1, QLine arg2)

static QDataStream	Write (QDataStream arg1, QDate arg2)

static QDataStream	Write (QDataStream @out, QRegExp regExp)

static QDataStream	Write (QDataStream arg1, QRect arg2)

static QDataStream	Write (QDataStream arg1, QSize arg2)

static QDataStream	Write (QDataStream s, QVariant.Type p)

static QDataStream	Write (QDataStream arg1, string arg2)

static QDataStream	Write (QDataStream @out, System.Collections.Generic.List< string > list)

static QDataStream	Read (QDataStream arg1, QChar arg2)

static QDataStream	Read (QDataStream arg1, QLocale arg2)

static QDataStream	Read (QDataStream arg1, QRect arg2)

static QDataStream	Read (QDataStream arg1, QEasingCurve arg2)

static QDataStream	Read (QDataStream arg1, QDate arg2)

static QDataStream	Read (QDataStream arg1, QUrl arg2)

static QDataStream	Read (QDataStream arg1, QUuid arg2)

static QTextStream	Read (QTextStream s, Qt.FuncQTextStreamQTextStream f)

static QDataStream	Read (QDataStream arg1, QLineF arg2)

static QDataStream	Read (QDataStream arg1, QRectF arg2)

static QDataStream	Read (QDataStream arg1, QPointF arg2)

static QDataStream	Read (QDataStream arg1, QLine arg2)

static QDataStream	Read (QDataStream arg1, QBitArray arg2)

static QDataStream	Read (QDataStream arg1, QSize arg2)

static QDataStream	Read (QDataStream arg1, QDateTime arg2)

static QDataStream	Read (QDataStream arg1, QTime arg2)

static QDataStream	Read (QDataStream arg1, QPoint arg2)

static QDataStream	Read (QDataStream @in, QRegExp regExp)

static QDataStream	Read (QDataStream s, object p)

static QDataStream	Read (QDataStream arg1, QByteArray arg2)

static QDataStream	Read (QDataStream arg1, QSizeF arg2)

static QDataStream	Read (QDataStream arg1, string arg2)

static QDataStream	Read (QDataStream s, QVariant.Type p)

static QDataStream	Read (QDataStream @in, System.Collections.Generic.List< string > list)

static double	qAcos (double v)

static void	qAddPostRoutine (System.Action arg1)

static string	qAppName ()

static double	qAsin (double v)

static double	qAtan (double v)

static double	qAtan2 (double x, double y)

static void	qBadAlloc ()

static int	qCeil (double v)

static ushort	qChecksum (string s, uint len)

static QByteArray	qCompress (QByteArray data)

static QByteArray	qCompress (QByteArray data, int compressionLevel=-1)

static QByteArray	qCompress (Pointer< byte > data, int nbytes)

static QByteArray	qCompress (Pointer< byte > data, int nbytes, int compressionLevel=-1)

static double	qCos (double v)

static double	qExp (double v)

static double	qFabs (double v)

static double	qFastCos (double x)

static double	qFastSin (double x)

static string	qFlagLocation (string method)

static int	qFloor (double v)

static bool	qFuzzyCompare (double p1, double p2)

static bool	qFuzzyCompare (float p1, float p2)

static bool	qFuzzyIsNull (double d)

static bool	qFuzzyIsNull (float f)

static uint	qHash (QBitArray key)

static uint	qHash (QChar key)

static uint	qHash (QStringRef key)

static uint	qHash (QUrl url)

static uint	qHash (QPersistentModelIndex index)

static uint	qHash (QByteArray key)

static uint	qHash (QModelIndex index)

static uint	qHash (uint key)

static uint	qHash (sbyte key)

static uint	qHash (byte key)

static uint	qHash (short key)

static uint	qHash (NativeLong key)

static uint	qHash (ushort key)

static uint	qHash (long key)

static uint	qHash (ulong key)

static uint	qHash (int key)

static uint	qHash (string key)

static uint	qHash (NativeULong key)

static double	qInf ()

static Qt.ActionQtMsgTypeString	qInstallMsgHandler (Qt.ActionQtMsgTypeString arg1)

static int	qIntCast (float f)

static int	qIntCast (double f)

static bool	qIsFinite (double d)

static bool	qIsFinite (float f)

static bool	qIsInf (float f)

static bool	qIsInf (double d)

static bool	qIsNaN (float f)

static bool	qIsNaN (double d)

static bool	qIsNull (float f)

static bool	qIsNull (double d)

static double	qLn (double v)

static double	qPow (double x, double y)

static double	qQNaN ()

static void	qRegisterStaticPluginInstanceFunction (Qt.FuncQObject function)

static void	qRemovePostRoutine (System.Action arg1)

static int	qRound (double d)

static long	qRound64 (double d)

static double	qSNaN ()

static bool	qSharedBuild ()

static double	qSin (double v)

static double	qSqrt (double v)

static bool	qStringComparisonHelper (QStringRef s1, string s2)

static double	qTan (double v)

static QByteArray	qUncompress (QByteArray data)

static QByteArray	qUncompress (Pointer< byte > data, int nbytes)

static string	qVersion ()

static void	Qbswap_helper (Pointer< byte > src, Pointer< byte > dest, int size)

static QByteArray	Qgetenv (string varName)

static bool	Qputenv (string varName, QByteArray value)

static int	Qrand ()

static void	Qsrand (uint seed)

static int	Qstrcmp (QByteArray str1, QByteArray str2)

static int	Qstrcmp (QByteArray str1, string str2)

static int	Qstrcmp (string str1, QByteArray str2)

static int	Qstrcmp (string str1, string str2)

static Pointer< sbyte >	Qstrcpy (Pointer< sbyte > dst, string src)

static Pointer< sbyte >	Qstrdup (string arg1)

static int	Qstricmp (string arg1, string arg2)

static uint	Qstrlen (string str)

static int	Qstrncmp (string str1, string str2, uint len)

static Pointer< sbyte >	Qstrncpy (Pointer< sbyte > dst, string src, uint len)

static int	Qstrnicmp (string arg1, string arg2, uint len)

static uint	Qstrnlen (string str, uint maxlen)

static string	QtTrId (string id, int n=-1)

Protected Member Functions
	QUdpSocket (System.Type dummy)

Protected Member Functions inherited from QtNetwork.QAbstractSocket
	QAbstractSocket (System.Type dummy)

new void	ConnectToHostImplementation (string hostName, ushort port, QIODevice.OpenModeFlag mode=QIODevice.OpenModeFlag.ReadWrite)


new void	OnConnected ()


new void	DisconnectFromHostImplementation ()


new void	OnDisconnected ()


new void	OnError (QAbstractSocket.SocketError arg1)


new void	OnHostFound ()


new void	OnProxyAuthenticationRequired (QNetworkProxy proxy, QAuthenticator authenticator)


override long	ReadData (Pointer< sbyte > data, long maxlen)


override long	ReadLineData (Pointer< sbyte > data, long maxlen)


new void	SetLocalAddress (QHostAddress address)


new void	SetLocalPort (ushort port)


new void	SetPeerAddress (QHostAddress address)


new void	SetPeerName (string name)


new void	SetPeerPort (ushort port)


new void	SetSocketError (QAbstractSocket.SocketError socketError)


new void	SetSocketState (QAbstractSocket.SocketState state)


new void	OnStateChanged (QAbstractSocket.SocketState arg1)


override long	WriteData (string data, long len)


Protected Member Functions inherited from QtCore.QIODevice
	QIODevice (System.Type dummy)

new void	OnAboutToClose ()


new void	OnBytesWritten (long bytes)


new void	OnReadChannelFinished ()


new void	OnReadyRead ()


new void	SetErrorString (string errorString)


new void	SetOpenMode (QIODevice.OpenModeFlag openMode)


Protected Member Functions inherited from QtCore.QObject
	QObject (System.Type dummy)

virtual void	OnChildEvent (QChildEvent arg1)


virtual void	ConnectNotify (string signal)


virtual void	OnCustomEvent (QEvent arg1)


new void	OnDestroyed (QObject arg1=null)


virtual void	DisconnectNotify (string signal)


new int	Receivers (string signal)


new QObject	Sender ()


new int	SenderSignalIndex ()


virtual void	OnTimerEvent (QTimerEvent arg1)

Properties
new QNetworkInterface	MulticastInterface `[get, set]`


static new QMetaObject	StaticMetaObject `[get]`

new IQUdpSocketSignals	Emit `[get]`

Properties inherited from QtNetwork.QAbstractSocket
Slot	HostFound


Slot	Connected


Slot	Disconnected


Slot< QAbstractSocket.SocketState >	StateChanged


Slot< QAbstractSocket.SocketError >	Error


Slot< QNetworkProxy, QAuthenticator >	ProxyAuthenticationRequired


Slot	ConnectionClosed

Slot	DelayedCloseFinished

new QNetworkProxy	Proxy `[get, set]`


new long	ReadBufferSize `[get, set]`


static new QMetaObject	StaticMetaObject `[get]`

new IQAbstractSocketSignals	Emit `[get]`

Properties inherited from QtCore.QIODevice
Slot	ReadyRead


Slot< System.Int64 >	BytesWritten


Slot	AboutToClose


Slot	ReadChannelFinished


static new QMetaObject	StaticMetaObject `[get]`

new IQIODeviceSignals	Emit `[get]`

Properties inherited from QtCore.QObject
virtual EventHandler < QEventArgs< QChildEvent > >	ChildEvent


virtual EventHandler < QEventArgs< QEvent > >	CustomEvent


virtual EventHandler < QEventArgs< QEvent > >	Event


virtual EventHandler < QEventArgs< QTimerEvent > >	TimerEvent


Slot< QObject >	DestroyedQObject

Slot	Destroyed


new QObject	Parent `[get, set]`


virtual System.IntPtr	SmokeObject `[get, set]`

new string	ObjectName `[get, set]`


static new QMetaObject	StaticMetaObject `[get]`


static new QMetaObject	StaticQtMetaObject `[get]`

new IQObjectSignals	Emit `[get]`

Additional Inherited Members
Protected Attributes inherited from QtCore.QObject
object	Q_EMIT = null

SmokeInvocation	interceptor

readonly List< QEventHandler >	eventFilters = new List<QEventHandler>()

Detailed Description

The QUdpSocket class provides a UDP socket.

UDP (User Datagram Protocol) is a lightweight, unreliable, datagram-oriented, connectionless protocol. It can be used when reliability isn't important. QUdpSocket is a subclass of QAbstractSocket that allows you to send and receive UDP datagrams.

The most common way to use this class is to bind to an address and port using bind(), then call writeDatagram() and readDatagram() to transfer data. If you want to use the standard QIODevice functions read(), readLine(), write(), etc., you must first connect the socket directly to a peer by calling connectToHost().

The socket emits the bytesWritten() signal every time a datagram is written to the network. If you just want to send datagrams, you don't need to call bind().

The readyRead() signal is emitted whenever datagrams arrive. In that case, hasPendingDatagrams() returns true. Call pendingDatagramSize() to obtain the size of the first pending datagram, and readDatagram() to read it.

Note: An incoming datagram should be read when you receive the readyRead() signal, otherwise this signal will not be emitted for the next datagram.

Example:

void Server::initSocket()

{

udpSocket = new QUdpSocket(this);

udpSocket->bind(QHostAddress::LocalHost, 7755);

connect(udpSocket, SIGNAL(readyRead()),

this, SLOT(readPendingDatagrams()));

}

void Server::readPendingDatagrams()

{

while (udpSocket->hasPendingDatagrams()) {

QByteArray datagram;

datagram.resize(udpSocket->pendingDatagramSize());

QHostAddress sender;

quint16 senderPort;

udpSocket->readDatagram(datagram.data(), datagram.size(),

&sender, &senderPort);

processTheDatagram(datagram);

}

QUdpSocket also supports UDP multicast. Use joinMulticastGroup() and leaveMulticastGroup() to control group membership, and QAbstractSocket::MulticastTtlOption and QAbstractSocket::MulticastLoopbackOption to set the TTL and loopback socket options. Use setMulticastInterface() to control the outgoing interface for multicast datagrams, and multicastInterface() to query it.

With QUdpSocket, you can also establish a virtual connection to a UDP server using connectToHost() and then use read() and write() to exchange datagrams without specifying the receiver for each datagram.

The Broadcast Sender, Broadcast Receiver, Multicast Sender, and Multicast Receiver examples illustrate how to use QUdpSocket in applications.

Symbian Platform Security Requirements

On Symbian, processes which use this class must have the NetworkServices platform security capability. If the client process lacks this capability, operations will result in a panic.

Platform security capabilities are added via the TARGET.CAPABILITY qmake variable.

Member Enumeration Documentation

enum QtNetwork.QUdpSocket.BindFlag

This enum describes the different flags you can pass to modify the behavior of QUdpSocket::bind().

Note: On Symbian OS bind flags behaviour depends on process capabilties. If process has NetworkControl capability, the bind attempt with ReuseAddressHint will always succeed even if the address and port is already bound by another socket with any flags. If process does not have NetworkControl capability, the bind attempt to address and port already bound by another socket will always fail.

This enum was introduced or modified in Qt 4.1.

Enumerator:

DefaultForPlatform	The default option for the current platform. On Unix and Mac OS X, this is equivalent to (DontShareAddress + ReuseAddressHint), and on Windows, its equivalent to ShareAddress.
DontShareAddress	Bind the address and port exclusively, so that no other services are allowed to rebind. By passing this option to QUdpSocket::bind(), you are guaranteed that on successs, your service is the only one that listens to the address and port. No services are allowed to rebind, even if they pass ReuseAddressHint. This option provides more security than ShareAddress, but on certain operating systems, it requires you to run the server with administrator privileges. On Unix and Mac OS X, not sharing is the default behavior for binding an address and port, so this option is ignored. On Windows, this option uses the SO_EXCLUSIVEADDRUSE socket option.
ReuseAddressHint	Provides a hint to QUdpSocket that it should try to rebind the service even if the address and port are already bound by another socket. On Windows, this is equivalent to the SO_REUSEADDR socket option. On Unix, this option is ignored.
ShareAddress	Allow other services to bind to the same address and port. This is useful when multiple processes share the load of a single service by listening to the same address and port (e.g., a web server with several pre-forked listeners can greatly improve response time). However, because any service is allowed to rebind, this option is subject to certain security considerations. Note that by combining this option with ReuseAddressHint, you will also allow your service to rebind an existing shared address. On Unix, this is equivalent to the SO_REUSEADDR socket option. On Windows, this option is ignored.

Constructor & Destructor Documentation

QtNetwork.QUdpSocket.QUdpSocket ( System.Type dummy )

protected

QtNetwork.QUdpSocket.QUdpSocket ( QObject parent = null )

Creates a QUdpSocket object.

parent is passed to the QObject constructor.

Member Function Documentation

new bool QtNetwork.QUdpSocket.Bind	(	QHostAddress	address,
		ushort	port
	)

Binds this socket to the address address and the port port. When bound, the signal readyRead() is emitted whenever a UDP datagram arrives on the specified address and port. This function is useful to write UDP servers.

On success, the functions returns true and the socket enters BoundState; otherwise it returns false.

The socket is bound using the DefaultForPlatform BindMode.

See also readDatagram().

new bool QtNetwork.QUdpSocket.Bind	(	QHostAddress	address,
		ushort	port,
		QUdpSocket.BindFlag	mode
	)

Binds this socket to the address address and the port port. When bound, the signal readyRead() is emitted whenever a UDP datagram arrives on the specified address and port. This function is useful to write UDP servers.

On success, the functions returns true and the socket enters BoundState; otherwise it returns false.

The socket is bound using the DefaultForPlatform BindMode.

See also readDatagram().

new bool QtNetwork.QUdpSocket.Bind ( ushort port = 0 )

Binds this socket to the address address and the port port. When bound, the signal readyRead() is emitted whenever a UDP datagram arrives on the specified address and port. This function is useful to write UDP servers.

On success, the functions returns true and the socket enters BoundState; otherwise it returns false.

The socket is bound using the DefaultForPlatform BindMode.

See also readDatagram().

new bool QtNetwork.QUdpSocket.Bind	(	ushort	port,
		QUdpSocket.BindFlag	mode
	)

Binds this socket to the address address and the port port. When bound, the signal readyRead() is emitted whenever a UDP datagram arrives on the specified address and port. This function is useful to write UDP servers.

On success, the functions returns true and the socket enters BoundState; otherwise it returns false.

The socket is bound using the DefaultForPlatform BindMode.

See also readDatagram().

override void QtNetwork.QUdpSocket.CreateProxy ( )

virtual

Reimplemented from QtNetwork.QAbstractSocket.

new void QtNetwork.QUdpSocket.Dispose ( )

new bool QtNetwork.QUdpSocket.HasPendingDatagrams ( )

Returns true if at least one datagram is waiting to be read; otherwise returns false.

See also pendingDatagramSize() and readDatagram().

new bool QtNetwork.QUdpSocket.JoinMulticastGroup ( QHostAddress groupAddress )

Joins the the multicast group specified by groupAddress on the default interface chosen by the operating system. The socket must be in BoundState, otherwise an error occurs.

This function returns true if successful; otherwise it returns false and sets the socket error accordingly.

This function was introduced in Qt 4.8.

Property Documentation

new IQUdpSocketSignals QtNetwork.QUdpSocket.Emit

getprotected

new QNetworkInterface QtNetwork.QUdpSocket.MulticastInterface

getset

Returns the interface for the outgoing interface for multicast datagrams. This corresponds to the IP_MULTICAST_IF socket option for IPv4 sockets and the IPV6_MULTICAST_IF socket option for IPv6 sockets. If no interface has been previously set, this function returns an invalid QNetworkInterface. The socket must be in BoundState, otherwise an invalid QNetworkInterface is returned.

This function was introduced in Qt 4.8.

Sets the outgoing interface for multicast datagrams to the interface iface. This corresponds to the IP_MULTICAST_IF socket option for IPv4 sockets and the IPV6_MULTICAST_IF socket option for IPv6 sockets. The socket must be in BoundState, otherwise this function does nothing.

This function was introduced in Qt 4.8.

new QMetaObject QtNetwork.QUdpSocket.StaticMetaObject

staticget

new bool QtNetwork.QUdpSocket.LeaveMulticastGroup	(	QHostAddress	groupAddress,
		QNetworkInterface	iface
	)

new long QtNetwork.QUdpSocket.ReadDatagram	(	Pointer< sbyte >	data,
		long	maxlen,
		QHostAddress	host = `null`
	)

new long QtNetwork.QUdpSocket.WriteDatagram	(	QByteArray	datagram,
		QHostAddress	host,
		ushort	port
	)

new long QtNetwork.QUdpSocket.WriteDatagram	(	string	data,
		long	len,
		QHostAddress	host,
		ushort	port
	)

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Properties

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Property Documentation