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// Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtWidgets>
#include <QtNetwork>
#include "client.h"
#include "movieconsumer.h"
#include "timeconsumer.h"
#include "chatconsumer.h"
#include "../shared/sctpchannels.h"
Client::Client(QWidget *parent)
: QDialog(parent)
, consumers(SctpChannels::NumberOfChannels)
{
setWindowTitle(tr("Multi-stream Client"));
sctpSocket = new QSctpSocket(this);
QLabel *hostLabel = new QLabel(tr("&Server name:"));
QLabel *portLabel = new QLabel(tr("S&erver port:"));
hostCombo = new QComboBox;
hostCombo->setEditable(true);
// find out name of this machine
QString name = QHostInfo::localHostName();
if (!name.isEmpty()) {
hostCombo->addItem(name);
QString domain = QHostInfo::localDomainName();
if (!domain.isEmpty())
hostCombo->addItem(name + QChar('.') + domain);
}
if (name != QString("localhost"))
hostCombo->addItem(QString("localhost"));
// find out IP addresses of this machine
QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();
// add non-localhost addresses
for (int i = 0; i < ipAddressesList.size(); ++i) {
if (!ipAddressesList.at(i).isLoopback())
hostCombo->addItem(ipAddressesList.at(i).toString());
}
// add localhost addresses
for (int i = 0; i < ipAddressesList.size(); ++i) {
if (ipAddressesList.at(i).isLoopback())
hostCombo->addItem(ipAddressesList.at(i).toString());
}
portLineEdit = new QLineEdit;
portLineEdit->setValidator(new QIntValidator(1, 65535, this));
hostLabel->setBuddy(hostCombo);
portLabel->setBuddy(portLineEdit);
connectButton = new QPushButton(tr("Connect"));
connectButton->setDefault(true);
connectButton->setEnabled(false);
QPushButton *quitButton = new QPushButton(tr("Quit"));
quitButton->setAutoDefault(false);
QDialogButtonBox *buttonBox = new QDialogButtonBox;
buttonBox->addButton(connectButton, QDialogButtonBox::ActionRole);
buttonBox->addButton(quitButton, QDialogButtonBox::AcceptRole);
QLabel *movieLabel = new QLabel(tr("Movie stream:"));
consumers[SctpChannels::Movie] = new MovieConsumer(this);
QLabel *timeLabel = new QLabel(tr("Time stream:"));
consumers[SctpChannels::Time] = new TimeConsumer(this);
QLabel *chatLabel = new QLabel(tr("&Chat:"));
consumers[SctpChannels::Chat] = new ChatConsumer(this);
chatLabel->setBuddy(consumers[SctpChannels::Chat]->widget());
connect(hostCombo, &QComboBox::editTextChanged, this, &Client::enableConnectButton);
connect(portLineEdit, &QLineEdit::textChanged, this, &Client::enableConnectButton);
connect(connectButton, &QPushButton::clicked, this, &Client::requestConnect);
connect(buttonBox, &QDialogButtonBox::accepted, this, &Client::accept);
connect(sctpSocket, &QSctpSocket::connected, this, &Client::connected);
connect(sctpSocket, &QSctpSocket::disconnected, this, &Client::disconnected);
connect(sctpSocket, &QSctpSocket::channelReadyRead, this, &Client::readDatagram);
connect(sctpSocket, &QSctpSocket::errorOccurred, this, &Client::displayError);
connect(consumers[SctpChannels::Time], &Consumer::writeDatagram, this, &Client::writeDatagram);
connect(consumers[SctpChannels::Chat], &Consumer::writeDatagram, this, &Client::writeDatagram);
QGridLayout *mainLayout = new QGridLayout;
mainLayout->addWidget(hostLabel, 0, 0);
mainLayout->addWidget(hostCombo, 0, 1);
mainLayout->addWidget(portLabel, 1, 0);
mainLayout->addWidget(portLineEdit, 1, 1);
mainLayout->addWidget(buttonBox, 2, 0, 1, 2);
mainLayout->addWidget(movieLabel, 3, 0);
mainLayout->addWidget(timeLabel, 3, 1);
mainLayout->addWidget(consumers[SctpChannels::Movie]->widget(), 4, 0);
mainLayout->addWidget(consumers[SctpChannels::Time]->widget(), 4, 1);
mainLayout->addWidget(chatLabel, 5, 0);
mainLayout->addWidget(consumers[SctpChannels::Chat]->widget(), 6, 0, 1, 2);
setLayout(mainLayout);
portLineEdit->setFocus();
}
Client::~Client()
{
delete sctpSocket;
}
void Client::connected()
{
consumers[SctpChannels::Chat]->widget()->setFocus();
}
void Client::disconnected()
{
for (Consumer *consumer : consumers)
consumer->serverDisconnected();
sctpSocket->close();
}
void Client::requestConnect()
{
connectButton->setEnabled(false);
sctpSocket->abort();
sctpSocket->connectToHost(hostCombo->currentText(),
portLineEdit->text().toInt());
}
void Client::readDatagram(int channel)
{
sctpSocket->setCurrentReadChannel(channel);
consumers[channel]->readDatagram(sctpSocket->readDatagram().data());
}
void Client::displayError(QAbstractSocket::SocketError socketError)
{
switch (socketError) {
case QAbstractSocket::HostNotFoundError:
QMessageBox::information(this, tr("Multi-stream Client"),
tr("The host was not found. Please check the "
"host name and port settings."));
break;
case QAbstractSocket::ConnectionRefusedError:
QMessageBox::information(this, tr("Multi-stream Client"),
tr("The connection was refused by the peer. "
"Make sure the multi-stream server is running, "
"and check that the host name and port "
"settings are correct."));
break;
default:
QMessageBox::information(this, tr("Multi-stream Client"),
tr("The following error occurred: %1.")
.arg(sctpSocket->errorString()));
}
enableConnectButton();
}
void Client::enableConnectButton()
{
connectButton->setEnabled(!hostCombo->currentText().isEmpty() &&
!portLineEdit->text().isEmpty());
}
void Client::writeDatagram(const QByteArray &ba)
{
if (sctpSocket->isValid() && sctpSocket->state() == QAbstractSocket::ConnectedState) {
sctpSocket->setCurrentWriteChannel(consumers.indexOf(static_cast<Consumer *>(sender())));
sctpSocket->writeDatagram(ba);
}
}
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