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++ // Copyright (C) 2017 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include <QLabel>
++ #include <QPushButton>
++ #include <QUdpSocket>
++ #include <QVBoxLayout>
++ #include <QCoreApplication>
++
++ #include "receiver.h"
++
++ Receiver::Receiver(QWidget *parent)
++ : QWidget(parent)
++ {
++ statusLabel = new QLabel(tr("Listening for broadcasted messages"));
++ statusLabel->setWordWrap(true);
++
++ auto quitButton = new QPushButton(tr("&Quit"));
++
++ //! [0]
++ udpSocket = new QUdpSocket(this);
++ udpSocket->bind(45454, QUdpSocket::ShareAddress);
++ //! [0]
++
++ //! [1]
++ connect(udpSocket, &QUdpSocket::readyRead,
++ this, &Receiver::processPendingDatagrams);
++ //! [1]
++ connect(quitButton, &QPushButton::clicked,
++ qApp, &QCoreApplication::quit);
++
++ auto buttonLayout = new QHBoxLayout;
++ buttonLayout->addStretch(1);
++ buttonLayout->addWidget(quitButton);
++ buttonLayout->addStretch(1);
++
++ auto mainLayout = new QVBoxLayout;
++ mainLayout->addWidget(statusLabel);
++ mainLayout->addLayout(buttonLayout);
++ setLayout(mainLayout);
++
++ setWindowTitle(tr("Broadcast Receiver"));
++ }
++
++ void Receiver::processPendingDatagrams()
++ {
++ QByteArray datagram;
++ //! [2]
++ while (udpSocket->hasPendingDatagrams()) {
++ datagram.resize(int(udpSocket->pendingDatagramSize()));
++ udpSocket->readDatagram(datagram.data(), datagram.size());
++ statusLabel->setText(tr("Received datagram: \"%1\"")
++ .arg(datagram.constData()));
++ }
++ //! [2]
++ }