553b6ab9cd
... as soon as we updated multicastsender. Changes are minimal and mostly cosmetic - use 'explcit' and 'nullptr' where appropriate, make a socket data-member and not a pointer, move the 'datagram's declaration outside of a loop. Task-number: QTBUG-60628 Change-Id: Icfa46e6d2844c40a605f2f4066847594943a8ea8 Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io> Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
93 lines
3.7 KiB
C++
93 lines
3.7 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2017 The Qt Company Ltd.
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** Contact: https://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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** Commercial License Usage
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** 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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** * Redistributions of source code must retain the above copyright
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** * Redistributions in binary form must reproduce the above copyright
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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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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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****************************************************************************/
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#include <QtWidgets>
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#include <QtNetwork>
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#include "receiver.h"
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Receiver::Receiver(QWidget *parent)
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: QDialog(parent),
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groupAddress(QStringLiteral("239.255.43.21"))
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{
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statusLabel = new QLabel(tr("Listening for multicasted messages"));
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auto quitButton = new QPushButton(tr("&Quit"));
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auto buttonLayout = new QHBoxLayout;
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buttonLayout->addStretch(1);
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buttonLayout->addWidget(quitButton);
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buttonLayout->addStretch(1);
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auto mainLayout = new QVBoxLayout;
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mainLayout->addWidget(statusLabel);
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mainLayout->addLayout(buttonLayout);
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setLayout(mainLayout);
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setWindowTitle(tr("Multicast Receiver"));
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udpSocket.bind(QHostAddress::AnyIPv4, 45454, QUdpSocket::ShareAddress);
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udpSocket.joinMulticastGroup(groupAddress);
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connect(&udpSocket, SIGNAL(readyRead()),
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this, SLOT(processPendingDatagrams()));
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connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
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}
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void Receiver::processPendingDatagrams()
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{
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QByteArray datagram;
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while (udpSocket.hasPendingDatagrams()) {
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datagram.resize(int(udpSocket.pendingDatagramSize()));
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udpSocket.readDatagram(datagram.data(), datagram.size());
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statusLabel->setText(tr("Received datagram: \"%1\"")
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.arg(datagram.constData()));
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}
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}
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