fortunethread.cpp Example File
blockingfortuneclient/fortunethread.cpp
#include <QtNetwork>
#include "fortunethread.h"
FortuneThread::FortuneThread(QObject *parent)
: QThread(parent), quit(false)
{
}
FortuneThread::~FortuneThread()
{
mutex.lock();
quit = true;
cond.wakeOne();
mutex.unlock();
wait();
}
void FortuneThread::requestNewFortune(const QString &hostName, quint16 port)
{
QMutexLocker locker(&mutex);
this->hostName = hostName;
this->port = port;
if (!isRunning())
start();
else
cond.wakeOne();
}
void FortuneThread::run()
{
mutex.lock();
QString serverName = hostName;
quint16 serverPort = port;
mutex.unlock();
while (!quit) {
const int Timeout = 5 * 1000;
QTcpSocket socket;
socket.connectToHost(serverName, serverPort);
if (!socket.waitForConnected(Timeout)) {
emit error(socket.error(), socket.errorString());
return;
}
QDataStream in(&socket);
in.setVersion(QDataStream::Qt_4_0);
QString fortune;
do {
if (!socket.waitForReadyRead(Timeout)) {
emit error(socket.error(), socket.errorString());
return;
}
in.startTransaction();
in >> fortune;
} while (!in.commitTransaction());
mutex.lock();
emit newFortune(fortune);
cond.wait(&mutex);
serverName = hostName;
serverPort = port;
mutex.unlock();
}
}