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50
51#include <QtNetwork>
52
53#include "fortunethread.h"
54
55FortuneThread::FortuneThread(QObject *parent)
56 : QThread(parent), quit(false)
57{
58}
59
60//! [0]
61FortuneThread::~FortuneThread()
62{
63 mutex.lock();
64 quit = true;
65 cond.wakeOne();
66 mutex.unlock();
67 wait();
68}
69//! [0]
70
71//! [1] //! [2]
72void FortuneThread::requestNewFortune(const QString &hostName, quint16 port)
73{
74//! [1]
75 QMutexLocker locker(&mutex);
76 this->hostName = hostName;
77 this->port = port;
78//! [3]
79 if (!isRunning())
80 start();
81 else
82 cond.wakeOne();
83}
84//! [2] //! [3]
85
86//! [4]
87void FortuneThread::run()
88{
89 mutex.lock();
90//! [4] //! [5]
91 QString serverName = hostName;
92 quint16 serverPort = port;
93 mutex.unlock();
94//! [5]
95
96//! [6]
97 while (!quit) {
98//! [7]
99 const int Timeout = 5 * 1000;
100
101 QTcpSocket socket;
102 socket.connectToHost(hostName: serverName, port: serverPort);
103//! [6] //! [8]
104
105 if (!socket.waitForConnected(msecs: Timeout)) {
106 emit error(socketError: socket.error(), message: socket.errorString());
107 return;
108 }
109//! [8] //! [11]
110
111 QDataStream in(&socket);
112 in.setVersion(QDataStream::Qt_4_0);
113 QString fortune;
114//! [11] //! [12]
115
116 do {
117 if (!socket.waitForReadyRead(msecs: Timeout)) {
118 emit error(socketError: socket.error(), message: socket.errorString());
119 return;
120 }
121
122 in.startTransaction();
123 in >> fortune;
124 } while (!in.commitTransaction());
125//! [12] //! [15]
126
127 mutex.lock();
128 emit newFortune(fortune);
129//! [7]
130
131 cond.wait(lockedMutex: &mutex);
132 serverName = hostName;
133 serverPort = port;
134 mutex.unlock();
135 }
136//! [15]
137}
138

source code of qtbase/examples/network/blockingfortuneclient/fortunethread.cpp