184d66caa5
This adds a way to resume reading from a stream after a ReadPastEnd error. This is done by introducing a stream read transaction mechanism that keeps read data in an internal buffer and rolls it back on failure. [ChangeLog][QtCore] Added QDataStream startTransaction(), commitTransaction(), rollbackTransaction(), abortTransaction() functions to support read transactions. Task-number: QTBUG-44418 Change-Id: Ibf946e1939a5573c4182fea7e26608947218c2d9 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef CLIENT_H
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#define CLIENT_H
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#include <QDialog>
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#include <QTcpSocket>
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#include <QDataStream>
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QT_BEGIN_NAMESPACE
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class QComboBox;
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class QLabel;
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class QLineEdit;
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class QPushButton;
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class QTcpSocket;
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class QNetworkSession;
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QT_END_NAMESPACE
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//! [0]
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class Client : public QDialog
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{
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Q_OBJECT
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public:
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explicit Client(QWidget *parent = Q_NULLPTR);
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private slots:
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void requestNewFortune();
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void readFortune();
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void displayError(QAbstractSocket::SocketError socketError);
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void enableGetFortuneButton();
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void sessionOpened();
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private:
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QComboBox *hostCombo;
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QLineEdit *portLineEdit;
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QLabel *statusLabel;
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QPushButton *getFortuneButton;
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QTcpSocket *tcpSocket;
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QDataStream in;
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QString currentFortune;
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QNetworkSession *networkSession;
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};
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//! [0]
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#endif
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