219 lines
8.5 KiB
C++
219 lines
8.5 KiB
C++
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/****************************************************************************
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**
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** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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#include <QtNetwork>
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#include "client.h"
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#include "movieconsumer.h"
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#include "timeconsumer.h"
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#include "chatconsumer.h"
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#include "../shared/sctpchannels.h"
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Client::Client(QWidget *parent)
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: QDialog(parent)
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, consumers(SctpChannels::NumberOfChannels)
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{
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setWindowTitle(tr("Multi-stream Client"));
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sctpSocket = new QSctpSocket(this);
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QLabel *hostLabel = new QLabel(tr("&Server name:"));
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QLabel *portLabel = new QLabel(tr("S&erver port:"));
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hostCombo = new QComboBox;
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hostCombo->setEditable(true);
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// find out name of this machine
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QString name = QHostInfo::localHostName();
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if (!name.isEmpty()) {
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hostCombo->addItem(name);
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QString domain = QHostInfo::localDomainName();
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if (!domain.isEmpty())
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hostCombo->addItem(name + QChar('.') + domain);
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}
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if (name != QString("localhost"))
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hostCombo->addItem(QString("localhost"));
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// find out IP addresses of this machine
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QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();
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// add non-localhost addresses
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for (int i = 0; i < ipAddressesList.size(); ++i) {
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if (!ipAddressesList.at(i).isLoopback())
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hostCombo->addItem(ipAddressesList.at(i).toString());
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}
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// add localhost addresses
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for (int i = 0; i < ipAddressesList.size(); ++i) {
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if (ipAddressesList.at(i).isLoopback())
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hostCombo->addItem(ipAddressesList.at(i).toString());
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}
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portLineEdit = new QLineEdit;
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portLineEdit->setValidator(new QIntValidator(1, 65535, this));
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hostLabel->setBuddy(hostCombo);
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portLabel->setBuddy(portLineEdit);
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connectButton = new QPushButton(tr("Connect"));
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connectButton->setDefault(true);
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connectButton->setEnabled(false);
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QPushButton *quitButton = new QPushButton(tr("Quit"));
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quitButton->setAutoDefault(false);
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QDialogButtonBox *buttonBox = new QDialogButtonBox;
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buttonBox->addButton(connectButton, QDialogButtonBox::ActionRole);
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buttonBox->addButton(quitButton, QDialogButtonBox::AcceptRole);
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QLabel *movieLabel = new QLabel(tr("Movie stream:"));
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consumers[SctpChannels::Movie] = new MovieConsumer(this);
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QLabel *timeLabel = new QLabel(tr("Time stream:"));
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consumers[SctpChannels::Time] = new TimeConsumer(this);
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QLabel *chatLabel = new QLabel(tr("&Chat:"));
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consumers[SctpChannels::Chat] = new ChatConsumer(this);
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chatLabel->setBuddy(consumers[SctpChannels::Chat]->widget());
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connect(hostCombo, &QComboBox::editTextChanged, this, &Client::enableConnectButton);
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connect(portLineEdit, &QLineEdit::textChanged, this, &Client::enableConnectButton);
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connect(connectButton, &QPushButton::clicked, this, &Client::requestConnect);
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connect(buttonBox, &QDialogButtonBox::accepted, this, &Client::accept);
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connect(sctpSocket, &QSctpSocket::connected, this, &Client::connected);
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connect(sctpSocket, &QSctpSocket::disconnected, this, &Client::disconnected);
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connect(sctpSocket, &QSctpSocket::channelReadyRead, this, &Client::readDatagram);
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connect(sctpSocket, &QSctpSocket::errorOccurred, this, &Client::displayError);
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connect(consumers[SctpChannels::Time], &Consumer::writeDatagram, this, &Client::writeDatagram);
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connect(consumers[SctpChannels::Chat], &Consumer::writeDatagram, this, &Client::writeDatagram);
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QGridLayout *mainLayout = new QGridLayout;
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mainLayout->addWidget(hostLabel, 0, 0);
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mainLayout->addWidget(hostCombo, 0, 1);
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mainLayout->addWidget(portLabel, 1, 0);
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mainLayout->addWidget(portLineEdit, 1, 1);
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mainLayout->addWidget(buttonBox, 2, 0, 1, 2);
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mainLayout->addWidget(movieLabel, 3, 0);
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mainLayout->addWidget(timeLabel, 3, 1);
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mainLayout->addWidget(consumers[SctpChannels::Movie]->widget(), 4, 0);
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mainLayout->addWidget(consumers[SctpChannels::Time]->widget(), 4, 1);
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mainLayout->addWidget(chatLabel, 5, 0);
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mainLayout->addWidget(consumers[SctpChannels::Chat]->widget(), 6, 0, 1, 2);
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setLayout(mainLayout);
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portLineEdit->setFocus();
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}
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Client::~Client()
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{
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delete sctpSocket;
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}
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void Client::connected()
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{
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consumers[SctpChannels::Chat]->widget()->setFocus();
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}
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void Client::disconnected()
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{
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for (Consumer *consumer : consumers)
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consumer->serverDisconnected();
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sctpSocket->close();
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}
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void Client::requestConnect()
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{
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connectButton->setEnabled(false);
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sctpSocket->abort();
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sctpSocket->connectToHost(hostCombo->currentText(),
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portLineEdit->text().toInt());
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}
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void Client::readDatagram(int channel)
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{
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sctpSocket->setCurrentReadChannel(channel);
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consumers[channel]->readDatagram(sctpSocket->readDatagram().data());
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}
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void Client::displayError(QAbstractSocket::SocketError socketError)
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{
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switch (socketError) {
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case QAbstractSocket::HostNotFoundError:
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QMessageBox::information(this, tr("Multi-stream Client"),
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tr("The host was not found. Please check the "
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"host name and port settings."));
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break;
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case QAbstractSocket::ConnectionRefusedError:
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QMessageBox::information(this, tr("Multi-stream Client"),
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tr("The connection was refused by the peer. "
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"Make sure the multi-stream server is running, "
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"and check that the host name and port "
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"settings are correct."));
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break;
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default:
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QMessageBox::information(this, tr("Multi-stream Client"),
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tr("The following error occurred: %1.")
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.arg(sctpSocket->errorString()));
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}
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enableConnectButton();
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}
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void Client::enableConnectButton()
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{
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connectButton->setEnabled(!hostCombo->currentText().isEmpty() &&
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!portLineEdit->text().isEmpty());
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}
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void Client::writeDatagram(const QByteArray &ba)
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{
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if (sctpSocket->isValid() && sctpSocket->state() == QAbstractSocket::ConnectedState) {
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sctpSocket->setCurrentWriteChannel(consumers.indexOf(static_cast<Consumer *>(sender())));
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sctpSocket->writeDatagram(ba);
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}
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}
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