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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]
}
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