C++ disconnected函数代码示例

/*线程启动时调用的函数*/
void ServerThread::run()
{
    _clientSocket = new ClientSocket();
    /*用ServerThread保存的套接字描述符初始化套接字*/
    if(!_clientSocket->setSocketDescriptor(_descriptor))
    {
        qDebug("socket create fail!");
        this->finished();
        return;
    }
    /*连接消息发送信号*/
    connect(this,SIGNAL(sendData(int,qint32,QVariant)),
            _clientSocket,SLOT(sendData(int,qint32,QVariant)));
    /*连接消息到达信号*/
    connect(_clientSocket,SIGNAL(messageArrive(int,qint32,QVariant)),
            this,SIGNAL(messageArrive(int,qint32,QVariant)));
    /*连接客户端断开信号*/
    connect(_clientSocket,SIGNAL(disconnected()),this,SLOT(threadFinished()));
    /*连接数据到达信号*/
    connect(_clientSocket,SIGNAL(readyRead()),_clientSocket,SLOT(readData()));
    exec();
}

squeezeListner::squeezeListner(QObject *parent,QString mIpaddr,QString mPortNr)
 :QObject ( parent )
{
    bool ret;
    ret=false;

    port_nr=mPortNr;
    ip_addr=mIpaddr;
    tcpSocket = new QTcpSocket(this);
    if (QObject::connect(tcpSocket, SIGNAL(readyRead()), this, SLOT(readData1())));
        qDebug()<<"Signal ok";
    QObject::connect(tcpSocket, SIGNAL(disconnected()),this,SLOT(disConnected()));

    tcpSocket->abort();
    tcpSocket->connectToHost(ip_addr,port_nr.toInt());

    if (tcpSocket->waitForConnected(1000))
    {
        ret=true;
        qDebug("Connected!");
    }
}

KDSoapServerSocket *KDSoapSocketList::handleIncomingConnection(int socketDescriptor)
{
    KDSoapServerSocket *socket = new KDSoapServerSocket(this, m_serverObject);
    socket->setSocketDescriptor(socketDescriptor);

#ifndef QT_NO_OPENSSL
    if (m_server->features() & KDSoapServer::Ssl) {
        // We could call a virtual "m_server->setSslConfiguration(socket)" here,
        // if more control is needed (e.g. due to SNI)
        if (!m_server->sslConfiguration().isNull()) {
            socket->setSslConfiguration(m_server->sslConfiguration());
        }
        socket->startServerEncryption();
    }
#endif

    QObject::connect(socket, SIGNAL(disconnected()),
                     socket, SLOT(deleteLater()));
    m_sockets.insert(socket);
    connect(socket, SIGNAL(socketDeleted(KDSoapServerSocket*)), this, SLOT(socketDeleted(KDSoapServerSocket*)));
    return socket;
}

CloudConnection::CloudConnection(const QUrl &authenticationServer, const QUrl &proxyServer, QObject *parent) :
    QObject(parent),
    m_authenticationServerUrl(authenticationServer),
    m_proxyServerUrl(proxyServer),
    m_connected(false),
    m_error(Cloud::CloudErrorNoError)
{
    m_reconnectionTimer = new QTimer(this);
    m_reconnectionTimer->setSingleShot(false);
    connect(m_reconnectionTimer, &QTimer::timeout, this, &CloudConnection::reconnectionTimeout);

    m_connection = new QWebSocket("guhd", QWebSocketProtocol::Version13, this);
    connect(m_connection, SIGNAL(connected()), this, SLOT(onConnected()));
    connect(m_connection, SIGNAL(disconnected()), this, SLOT(onDisconnected()));
    connect(m_connection, SIGNAL(textMessageReceived(QString)), this, SLOT(onTextMessageReceived(QString)));
    connect(m_connection, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(onError(QAbstractSocket::SocketError)));

    m_authenticator = new CloudAuthenticator("0631d42ba0464e4ebd4b78b15c53f532", "b7919ebf3bcf48239f348e764744079b", this);
    m_authenticator->setUrl(m_authenticationServerUrl);

    connect(m_authenticator, &CloudAuthenticator::authenticationChanged, this, &CloudConnection::onAuthenticationChanged);
}

InteractiveSMTPServerWindow::InteractiveSMTPServerWindow( QTcpSocket * socket, QWidget * parent )
  : QWidget( parent ), mSocket( socket )
{
  QPushButton * but;
  Q_ASSERT( socket );

  QVBoxLayout * vlay = new QVBoxLayout( this );

  mTextEdit = new QTextEdit( this );
  vlay->addWidget( mTextEdit, 1 );
  QWidget *mLayoutWidget = new QWidget;
  vlay->addWidget( mLayoutWidget );

  QHBoxLayout * hlay = new QHBoxLayout( mLayoutWidget );
    
  mLineEdit = new QLineEdit( this );
  mLabel = new QLabel( "&Response:", this );
  mLabel->setBuddy( mLineEdit );
  but = new QPushButton( "&Send", this );
  hlay->addWidget( mLabel );
  hlay->addWidget( mLineEdit, 1 );
  hlay->addWidget( but );

  connect( mLineEdit, SIGNAL(returnPressed()), SLOT(slotSendResponse()) );
  connect( but, SIGNAL(clicked()), SLOT(slotSendResponse()) );

  but = new QPushButton( "&Close Connection", this );
  vlay->addWidget( but );

  connect( but, SIGNAL(clicked()), SLOT(slotConnectionClosed()) );

  connect( socket, SIGNAL(disconnected()), SLOT(slotConnectionClosed()) );
  connect( socket, SIGNAL(error(QAbstractSocket::SocketError)),
           SLOT(slotError(QAbstractSocket::SocketError)) );
  connect( socket, SIGNAL(readyRead()), SLOT(slotReadyRead()) );

  mLineEdit->setText( "220 hi there" );
  mLineEdit->setFocus();
}

//void TcpClientSocket::dataReceived(QString msg)
//{
////        emit updateClients(msg,msg.length());
//}
void TcpClientSocket::dataReceived(){
    QString name=this->readAll();
    if(isfirst==6666){
        qDebug()<<name;
        QStringList tmp=name.split(" ");
        if(q.Iscontent(tmp[0],tmp[2].toInt())){
            classname=tmp[2].toInt();
            if(classname>=3){
                return;
            }
            this->write("yes\n");
            this->write(q.getquestioncontent().toUtf8());
            this->flush();
            this->write(q.avaqueue(classname).toLatin1());
            this->flush();
            this->write("\nmdzz");
            this->flush();
        }else{
            this->write("no");
        }
        qDebug()<< "登陆 ";
    }else{
        qDebug() << "选题内容 " <<name;
        QStringList tmp=name.split("|");
        classname=tmp[2].toInt();
        qDebug() << classname;
        qDebug()<< tmp;
        if(q.selectquestion(tmp[0],classname,tmp[1].toInt())){
            this->write("OK");
            emit disconnected(this->socketDescriptor());
        }else{
            qDebug() << "error\n";
            this->write("error");
            this->write(q.avaqueue(classname).toLatin1());
            this->flush();
        }
        qDebug()<< "选题 ";
    }
}

/*!
  Constructs an assistant client with the specified \a parent. For
  systems other than Mac OS, \a path specifies the path to the Qt
  Assistant executable. For Mac OS, \a path specifies a directory
  containing a valid assistant.app bundle. If \a path is the empty
  string, the system path (\c{%PATH%} or \c $PATH) is used.
*/
QAssistantClient::QAssistantClient( const QString &path, QObject *parent )
    : QObject( parent ), host ( QLatin1String("localhost") )
{
#if defined(Q_OS_MAC)
    const QString assistant = QLatin1String("Assistant_adp");
#else
    const QString assistant = QLatin1String("assistant_adp");
#endif

    if ( path.isEmpty() )
        assistantCommand = assistant;
    else {
        QFileInfo fi( path );
        if ( fi.isDir() )
            assistantCommand = path + QLatin1String("/") + assistant;
        else
            assistantCommand = path;
    }

#if defined(Q_OS_MAC)
    assistantCommand += QLatin1String(".app/Contents/MacOS/Assistant_adp");
#endif

    socket = new QTcpSocket( this );
    connect( socket, SIGNAL(connected()),
            SLOT(socketConnected()) );
    connect( socket, SIGNAL(disconnected()),
            SLOT(socketConnectionClosed()) );
    connect( socket, SIGNAL(error(QAbstractSocket::SocketError)),
             SLOT(socketError()) );
    opened = false;
    proc = new QProcess( this );
    port = 0;
    pageBuffer = QLatin1String("");
    connect( proc, SIGNAL(readyReadStandardError()),
             this, SLOT(readStdError()) );
    connect( proc, SIGNAL(error(QProcess::ProcessError)),
        this, SLOT(procError(QProcess::ProcessError)) );
}

bool QHttpSocketEngine::initialize(QAbstractSocket::SocketType type, QAbstractSocket::NetworkLayerProtocol protocol)
{
    Q_D(QHttpSocketEngine);
    if (type != QAbstractSocket::TcpSocket)
        return false;

    setProtocol(protocol);
    setSocketType(type);
    d->socket = new QTcpSocket(this);
#ifndef QT_NO_BEARERMANAGEMENT
    d->socket->setProperty("_q_networkSession", property("_q_networkSession"));
#endif

    // Explicitly disable proxying on the proxy socket itself to avoid
    // unwanted recursion.
    d->socket->setProxy(QNetworkProxy::NoProxy);

    // Intercept all the signals.
    connect(d->socket, SIGNAL(connected()),
            this, SLOT(slotSocketConnected()),
            Qt::DirectConnection);
    connect(d->socket, SIGNAL(disconnected()),
            this, SLOT(slotSocketDisconnected()),
            Qt::DirectConnection);
    connect(d->socket, SIGNAL(readyRead()),
            this, SLOT(slotSocketReadNotification()),
            Qt::DirectConnection);
    connect(d->socket, SIGNAL(bytesWritten(qint64)),
            this, SLOT(slotSocketBytesWritten()),
            Qt::DirectConnection);
    connect(d->socket, SIGNAL(error(QAbstractSocket::SocketError)),
            this, SLOT(slotSocketError(QAbstractSocket::SocketError)),
            Qt::DirectConnection);
    connect(d->socket, SIGNAL(stateChanged(QAbstractSocket::SocketState)),
            this, SLOT(slotSocketStateChanged(QAbstractSocket::SocketState)),
            Qt::DirectConnection);

    return true;
}

bool NetworkConnection::openConnection(const QString & host, const unsigned short port, bool not_main_connection)
{	
	qsocket = new QTcpSocket();	//try with no parent passed for now
	if(!qsocket)
		return 0;
	//connect signals
	
	//connect(qsocket, SIGNAL(hostFound()), SLOT(OnHostFound()));
	connect(qsocket, SIGNAL(connected()), SLOT(OnConnected()));
	connect(qsocket, SIGNAL(readyRead()), SLOT(OnReadyRead()));
	connect(qsocket, SIGNAL(disconnected ()), SLOT(OnConnectionClosed()));
//	connect(qsocket, SIGNAL(delayedCloseFinished()), SLOT(OnDelayedCloseFinish()));
//	connect(qsocket, SIGNAL(bytesWritten(qint64)), SLOT(OnBytesWritten(qint64)));
    connect(qsocket, SIGNAL(error(QAbstractSocket::SocketError)), SLOT(OnError(QAbstractSocket::SocketError)));

	if(qsocket->state() != QTcpSocket::UnconnectedState)
	{
		qDebug("Called openConnection while in state %d", qsocket->isValid());
		return 0;
	}
	//remove asserts later
	Q_ASSERT(host != 0);
	Q_ASSERT(port != 0);

	if(!not_main_connection)
		drawPleaseWait();

	qDebug("Connecting to %s %d...\n", host.toLatin1().constData(), port);
	// assume info.host is clean
	qsocket->connectToHost(host, (quint16) port);
	
	/* If dispatch does not have a UI, the thing that sets the UI
	 * will setupRoomAndConsole */
	/* Tricky now without dispatches... who sets up the UI?
	 * there's always a mainwindow... but maybe things aren't setup? */
	
	/* connectionInfo as a message with those pointers is probably a bad idea */
	return (qsocket->state() != QTcpSocket::UnconnectedState);
}

void u3HClient::on_clientThread_Started()
{
	m_clientSocket = new QTcpSocket(this);
	if(m_clientSocket->setSocketDescriptor(m_socketDescriptor)) 
	{
		// when data ready to be read
		connect(m_clientSocket, SIGNAL(readyRead()), this, SLOT(on_clientSocket_DataReady()));
		connect(m_clientSocket, SIGNAL(disconnected()), this, SLOT(on_socketDisconnected()));

		packetBuilder *b = new packetBuilder(_hello, newclient);
		b->FinalizePacket();
		SendPacket(b);
	}
	else 
	{
		emit ClientFatalError(m_clientID, tr("Can't set descriptor on socket"));
		emit TerminateClient();
	}

	LogEvent("New client from : " + GetClientEndPointString());

}

void TestLocalSocket_Peer::onNewConnection(quintptr socketDescriptor)
{
	LocalServer	*	src	=	qobject_cast<LocalServer*>(sender());
	
	if(src == 0)
		return;
	
	QWriteLocker	locker(&m_socketLock);
	
	QVERIFY(m_socket == 0);
	
	m_socket	=	new LocalSocket(this);
	
	connect(m_socket, SIGNAL(socketDescriptorWritten(quintptr)), SLOT(fileDescriptorWritten(quintptr)));
	connect(m_socket, SIGNAL(disconnected()), SLOT(onDisconnected()), Qt::DirectConnection);
	
	m_socket->setSocketDescriptor(socketDescriptor);
	
	QVERIFY(m_socket->open(QIODevice::ReadWrite));
	
	m_socketChanged.wakeAll();
}

void NfcPeerToPeer::handleNewConnection()
{
    if (!m_connectServerSocket)
        return;

    if (m_nfcServerSocket) {
        m_nfcServerSocket->deleteLater();
    }

    // The socket is a child of the server and will therefore be deleted automatically
    m_nfcServerSocket = m_nfcServer->nextPendingConnection();

    connect(m_nfcServerSocket, SIGNAL(readyRead()), this, SLOT(readTextServer()));
    connect(m_nfcServerSocket, SIGNAL(error(QLlcpSocket::SocketError)), this, SLOT(serverSocketError(QLlcpSocket::SocketError)));
    connect(m_nfcServerSocket, SIGNAL(stateChanged(QLlcpSocket::SocketState)), this, SLOT(serverSocketStateChanged(QLlcpSocket::SocketState)));
    connect(m_nfcServerSocket, SIGNAL(disconnected()), this, SLOT(serverSocketDisconnected()));

    if (m_reportingLevel != AppSettings::OnlyImportantReporting) {
        emit statusMessage("New server socket connection");
    }
    sendCachedText();
}

//----------------------------------------------------------------------------//
// QCanConfig()                                                                 //
// constructor                                                                //
//----------------------------------------------------------------------------//
QCanConfig::QCanConfig(QObject *parent) :
    QObject(parent)
{
   //----------------------------------------------------------------
   // get the instance of the main application
   //
   pclAppP = QCoreApplication::instance();

   
   //----------------------------------------------------------------
   // connect signals for socket operations
   //
   QObject::connect(&clCanSocketP, SIGNAL(connected()),
                    this, SLOT(socketConnected()));

   QObject::connect(&clCanSocketP, SIGNAL(disconnected()),
                    this, SLOT(socketDisconnected()));
   
   QObject::connect(&clCanSocketP, SIGNAL(error(QAbstractSocket::SocketError)),
                    this, SLOT(socketError(QAbstractSocket::SocketError)));
   
}

//! [4]
void Server::sendFortune()
{
//! [5]
    QByteArray block;
    QDataStream out(&block, QIODevice::WriteOnly);
    out.setVersion(QDataStream::Qt_4_0);
//! [4] //! [6]
    out << (quint16)0;
    out << fortunes.at(qrand() % fortunes.size());
    out.device()->seek(0);
    out << (quint16)(block.size() - sizeof(quint16));
//! [6] //! [7]

    QTcpSocket *clientConnection = tcpServer->nextPendingConnection();
    connect(clientConnection, SIGNAL(disconnected()),
            clientConnection, SLOT(deleteLater()));
//! [7] //! [8]

    clientConnection->write(block);
    clientConnection->disconnectFromHost();
//! [5]
}

void SkpSocketTestWidget::skp_on_timer_socket()
{
    int threadIndex = m_connectNumber % THREAD_NUMBER;
    QThread *thread = m_threadList.at(threadIndex);
    m_connectNumber++;

    SkpTcpSocketTest *tcpSocketTest = new SkpTcpSocketTest();

    connect(tcpSocketTest, SIGNAL(connected()), tcpSocketTest, SLOT(skp_on_connect()));
    connect(tcpSocketTest, SIGNAL(readyRead()), tcpSocketTest, SLOT(skp_on_read()));
    connect(tcpSocketTest, SIGNAL(disconnected()), tcpSocketTest, SLOT(skp_on_disconnected()));
    connect(tcpSocketTest, SIGNAL(error(QAbstractSocket::SocketError)),
            tcpSocketTest, SLOT(skp_on_error(QAbstractSocket::SocketError)));

    connect(tcpSocketTest, SIGNAL(skp_sig_quit(qint64, qint64, qint64, qint64)), this, SLOT(skp_on_quit(qint64, qint64, qint64, qint64)));
    connect(tcpSocketTest, SIGNAL(skp_sig_socket_quit(qint64, qint64, qint64, qint64)), this, SLOT(skp_on_socket_quit(qint64, qint64, qint64, qint64)));

    tcpSocketTest->connectToHost(connectIP, connectPort);
    tcpSocketTest->waitForConnected();

    tcpSocketTest->moveToThread(thread);
}