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#include <QtNetwork>

#include "fortunethread.h"

FortuneThread::FortuneThread(QObject *parent)

    : QThread(parent), quit(false)

{

}

//! [0]

FortuneThread::~FortuneThread()

{

    mutex.lock();

    quit = true;

    cond.wakeOne();

    mutex.unlock();

    wait();

}

//! [0]

//! [1] //! [2]

void FortuneThread::requestNewFortune(const QString &hostName, quint16 port)

{

//! [1]

    QMutexLocker locker(&mutex);

    this->hostName = hostName;

    this->port = port;

//! [3]

    if (!isRunning())

        start();

    else

        cond.wakeOne();

}

//! [2] //! [3]

//! [4]

void FortuneThread::run()

{

    mutex.lock();

//! [4] //! [5]

    QString serverName = hostName;

    quint16 serverPort = port;

    mutex.unlock();

//! [5]

//! [6]

    while (!quit) {

//! [7]

        const int Timeout = 5 * 1000;

        QTcpSocket socket;

        socket.connectToHost(serverName, serverPort);

//! [6] //! [8]

        if (!socket.waitForConnected(Timeout)) {

            emit error(socket.error(), socket.errorString());

            return;

        }

//! [8] //! [9]

        while (socket.bytesAvailable() < (int)sizeof(quint16)) {

            if (!socket.waitForReadyRead(Timeout)) {

                emit error(socket.error(), socket.errorString());

                return;

            }

//! [9] //! [10]

        }

//! [10] //! [11]

        quint16 blockSize;

        QDataStream in(&socket);

        in.setVersion(QDataStream::Qt_4_0);

        in >> blockSize;

//! [11] //! [12]

        while (socket.bytesAvailable() < blockSize) {

            if (!socket.waitForReadyRead(Timeout)) {

                emit error(socket.error(), socket.errorString());

                return;

            }

//! [12] //! [13]

        }

//! [13] //! [14]

        mutex.lock();

        QString fortune;

        in >> fortune;

        emit newFortune(fortune);

//! [7] //! [14] //! [15]

        cond.wait(&mutex);

        serverName = hostName;

        serverPort = port;

        mutex.unlock();

    }

//! [15]

}