mirror of
https://github.com/crystalidea/qt6windows7.git
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73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
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// Copyright (C) 2017 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "sender.h"
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Sender::Sender(QWidget *parent)
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: QDialog(parent),
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groupAddress4(QStringLiteral("239.255.43.21")),
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groupAddress6(QStringLiteral("ff12::2115"))
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{
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// force binding to their respective families
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udpSocket4.bind(QHostAddress(QHostAddress::AnyIPv4), 0);
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udpSocket6.bind(QHostAddress(QHostAddress::AnyIPv6), udpSocket4.localPort());
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QString msg = tr("Ready to multicast datagrams to groups %1 and [%2] on port 45454").arg(groupAddress4.toString());
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if (udpSocket6.state() != QAbstractSocket::BoundState)
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msg = tr("IPv6 failed. Ready to multicast datagrams to group %1 on port 45454").arg(groupAddress4.toString());
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else
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msg = msg.arg(groupAddress6.toString());
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statusLabel = new QLabel(msg);
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auto ttlLabel = new QLabel(tr("TTL for IPv4 multicast datagrams:"));
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auto ttlSpinBox = new QSpinBox;
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ttlSpinBox->setRange(0, 255);
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auto ttlLayout = new QHBoxLayout;
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ttlLayout->addWidget(ttlLabel);
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ttlLayout->addWidget(ttlSpinBox);
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startButton = new QPushButton(tr("&Start"));
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auto quitButton = new QPushButton(tr("&Quit"));
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auto buttonBox = new QDialogButtonBox;
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buttonBox->addButton(startButton, QDialogButtonBox::ActionRole);
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buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
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connect(ttlSpinBox, &QSpinBox::valueChanged, this, &Sender::ttlChanged);
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connect(startButton, &QPushButton::clicked, this, &Sender::startSending);
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connect(quitButton, &QPushButton::clicked, this, &Sender::close);
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connect(&timer, &QTimer::timeout, this, &Sender::sendDatagram);
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auto mainLayout = new QVBoxLayout;
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mainLayout->addWidget(statusLabel);
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mainLayout->addLayout(ttlLayout);
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mainLayout->addWidget(buttonBox);
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setLayout(mainLayout);
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setWindowTitle(tr("Multicast Sender"));
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ttlSpinBox->setValue(1);
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}
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void Sender::ttlChanged(int newTtl)
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{
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// we only set the TTL on the IPv4 socket, as that changes the multicast scope
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udpSocket4.setSocketOption(QAbstractSocket::MulticastTtlOption, newTtl);
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}
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void Sender::startSending()
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{
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startButton->setEnabled(false);
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timer.start(1000);
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}
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void Sender::sendDatagram()
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{
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statusLabel->setText(tr("Now sending datagram %1").arg(messageNo));
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QByteArray datagram = "Multicast message " + QByteArray::number(messageNo);
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udpSocket4.writeDatagram(datagram, groupAddress4, 45454);
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if (udpSocket6.state() == QAbstractSocket::BoundState)
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udpSocket6.writeDatagram(datagram, groupAddress6, 45454);
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++messageNo;
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}
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