| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the examples of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:BSD$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** BSD License Usage |
| ** Alternatively, you may use this file under the terms of the BSD license |
| ** as follows: |
| ** |
| ** "Redistribution and use in source and binary forms, with or without |
| ** modification, are permitted provided that the following conditions are |
| ** met: |
| ** * Redistributions of source code must retain the above copyright |
| ** notice, this list of conditions and the following disclaimer. |
| ** * Redistributions in binary form must reproduce the above copyright |
| ** notice, this list of conditions and the following disclaimer in |
| ** the documentation and/or other materials provided with the |
| ** distribution. |
| ** * Neither the name of The Qt Company Ltd nor the names of its |
| ** contributors may be used to endorse or promote products derived |
| ** from this software without specific prior written permission. |
| ** |
| ** |
| ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "sender.h" |
| |
| Sender::Sender(QWidget *parent) |
| : QDialog(parent), |
| groupAddress4(QStringLiteral("239.255.43.21")), |
| groupAddress6(QStringLiteral("ff12::2115")) |
| { |
| // force binding to their respective families |
| udpSocket4.bind(QHostAddress(QHostAddress::AnyIPv4), 0); |
| udpSocket6.bind(QHostAddress(QHostAddress::AnyIPv6), udpSocket4.localPort()); |
| |
| QString msg = tr("Ready to multicast datagrams to groups %1 and [%2] on port 45454").arg(groupAddress4.toString()); |
| if (udpSocket6.state() != QAbstractSocket::BoundState) |
| msg = tr("IPv6 failed. Ready to multicast datagrams to group %1 on port 45454").arg(groupAddress4.toString()); |
| else |
| msg = msg.arg(groupAddress6.toString()); |
| statusLabel = new QLabel(msg); |
| |
| auto ttlLabel = new QLabel(tr("TTL for IPv4 multicast datagrams:")); |
| auto ttlSpinBox = new QSpinBox; |
| ttlSpinBox->setRange(0, 255); |
| |
| auto ttlLayout = new QHBoxLayout; |
| ttlLayout->addWidget(ttlLabel); |
| ttlLayout->addWidget(ttlSpinBox); |
| |
| startButton = new QPushButton(tr("&Start")); |
| auto quitButton = new QPushButton(tr("&Quit")); |
| |
| auto buttonBox = new QDialogButtonBox; |
| buttonBox->addButton(startButton, QDialogButtonBox::ActionRole); |
| buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole); |
| |
| connect(ttlSpinBox, QOverload<int>::of(&QSpinBox::valueChanged), this, &Sender::ttlChanged); |
| connect(startButton, &QPushButton::clicked, this, &Sender::startSending); |
| connect(quitButton, &QPushButton::clicked, this, &Sender::close); |
| connect(&timer, &QTimer::timeout, this, &Sender::sendDatagram); |
| |
| auto mainLayout = new QVBoxLayout; |
| mainLayout->addWidget(statusLabel); |
| mainLayout->addLayout(ttlLayout); |
| mainLayout->addWidget(buttonBox); |
| setLayout(mainLayout); |
| |
| setWindowTitle(tr("Multicast Sender")); |
| ttlSpinBox->setValue(1); |
| } |
| |
| void Sender::ttlChanged(int newTtl) |
| { |
| // we only set the TTL on the IPv4 socket, as that changes the multicast scope |
| udpSocket4.setSocketOption(QAbstractSocket::MulticastTtlOption, newTtl); |
| } |
| |
| void Sender::startSending() |
| { |
| startButton->setEnabled(false); |
| timer.start(1000); |
| } |
| |
| void Sender::sendDatagram() |
| { |
| statusLabel->setText(tr("Now sending datagram %1").arg(messageNo)); |
| QByteArray datagram = "Multicast message " + QByteArray::number(messageNo); |
| udpSocket4.writeDatagram(datagram, groupAddress4, 45454); |
| if (udpSocket6.state() == QAbstractSocket::BoundState) |
| udpSocket6.writeDatagram(datagram, groupAddress6, 45454); |
| ++messageNo; |
| } |