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50
51#include <QtWidgets>
52#include <QtNetwork>
53#include <QtCore>
54
55#include "sender.h"
56
57Sender::Sender(QWidget *parent)
58 : QWidget(parent)
59{
60 statusLabel = new QLabel(tr("Ready to broadcast datagrams on port 45454"));
61 statusLabel->setWordWrap(true);
62
63 startButton = new QPushButton(tr("&Start"));
64 auto quitButton = new QPushButton(tr("&Quit"));
65
66 auto buttonBox = new QDialogButtonBox;
67 buttonBox->addButton(startButton, QDialogButtonBox::ActionRole);
68 buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
69
70//! [0]
71 udpSocket = new QUdpSocket(this);
72//! [0]
73
74 connect(startButton, &QPushButton::clicked, this, &Sender::startBroadcasting);
75 connect(quitButton, &QPushButton::clicked, this, &Sender::close);
76 connect(&timer, &QTimer::timeout, this, &Sender::broadcastDatagram);
77
78 auto mainLayout = new QVBoxLayout;
79 mainLayout->addWidget(statusLabel);
80 mainLayout->addWidget(buttonBox);
81 setLayout(mainLayout);
82
83 setWindowTitle(tr("Broadcast Sender"));
84}
85
86void Sender::startBroadcasting()
87{
88 startButton->setEnabled(false);
89 timer.start(1000);
90}
91
92void Sender::broadcastDatagram()
93{
94 statusLabel->setText(tr("Now broadcasting datagram %1").arg(messageNo));
95//! [1]
96 QByteArray datagram = "Broadcast message " + QByteArray::number(messageNo);
97 udpSocket->writeDatagram(datagram, QHostAddress::Broadcast, 45454);
98//! [1]
99 ++messageNo;
100}
101