mirror of
https://github.com/crystalidea/qt6windows7.git
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65 lines
2.3 KiB
C++
65 lines
2.3 KiB
C++
// 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 <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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groupAddress4(QStringLiteral("239.255.43.21")),
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groupAddress6(QStringLiteral("ff12::2115"))
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{
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statusLabel = new QLabel(tr("Listening for multicast messages on both IPv4 and IPv6"));
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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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udpSocket4.bind(QHostAddress::AnyIPv4, 45454, QUdpSocket::ShareAddress);
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udpSocket4.joinMulticastGroup(groupAddress4);
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if (!udpSocket6.bind(QHostAddress::AnyIPv6, 45454, QUdpSocket::ShareAddress) ||
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!udpSocket6.joinMulticastGroup(groupAddress6))
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statusLabel->setText(tr("Listening for multicast messages on IPv4 only"));
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connect(&udpSocket4, &QUdpSocket::readyRead,
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this, &Receiver::processPendingDatagrams);
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connect(&udpSocket6, &QUdpSocket::readyRead,
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this, &Receiver::processPendingDatagrams);
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connect(quitButton, &QPushButton::clicked,
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qApp, &QCoreApplication::quit);
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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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// using QUdpSocket::readDatagram (API since Qt 4)
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while (udpSocket4.hasPendingDatagrams()) {
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datagram.resize(qsizetype(udpSocket4.pendingDatagramSize()));
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udpSocket4.readDatagram(datagram.data(), datagram.size());
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statusLabel->setText(tr("Received IPv4 datagram: \"%1\"")
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.arg(datagram.constData()));
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}
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// using QUdpSocket::receiveDatagram (API since Qt 5.8)
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while (udpSocket6.hasPendingDatagrams()) {
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QNetworkDatagram dgram = udpSocket6.receiveDatagram();
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statusLabel->setText(statusLabel->text() +
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tr("\nReceived IPv6 datagram from [%2]:%3: \"%1\"")
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.arg(dgram.data().constData(), dgram.senderAddress().toString())
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.arg(dgram.senderPort()));
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}
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}
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