| /**************************************************************************** |
| ** |
| ** Copyright (C) 2015 Alex Trotsenko <alex1973tr@gmail.com> |
| ** Contact: https://www.qt.io/licensing/ |
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| ** This file is part of the examples of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| #include <QtWidgets> |
| #include <QtNetwork> |
| #include <QtAlgorithms> |
| |
| #include "server.h" |
| #include "movieprovider.h" |
| #include "timeprovider.h" |
| #include "chatprovider.h" |
| |
| #include "../shared/sctpchannels.h" |
| |
| Server::Server(QWidget *parent) |
| : QDialog(parent) |
| , providers(SctpChannels::NumberOfChannels) |
| { |
| setWindowTitle(tr("Multi-stream Server")); |
| |
| sctpServer = new QSctpServer(this); |
| sctpServer->setMaximumChannelCount(NumberOfChannels); |
| |
| statusLabel = new QLabel; |
| QPushButton *quitButton = new QPushButton(tr("Quit")); |
| |
| providers[SctpChannels::Movie] = new MovieProvider(this); |
| providers[SctpChannels::Time] = new TimeProvider(this); |
| providers[SctpChannels::Chat] = new ChatProvider(this); |
| |
| connect(sctpServer, &QSctpServer::newConnection, this, &Server::newConnection); |
| connect(quitButton, &QPushButton::clicked, this, &Server::accept); |
| connect(providers[SctpChannels::Movie], &Provider::writeDatagram, this, &Server::writeDatagram); |
| connect(providers[SctpChannels::Time], &Provider::writeDatagram, this, &Server::writeDatagram); |
| connect(providers[SctpChannels::Chat], &Provider::writeDatagram, this, &Server::writeDatagram); |
| |
| QVBoxLayout *mainLayout = new QVBoxLayout; |
| mainLayout->addWidget(statusLabel); |
| mainLayout->addWidget(quitButton); |
| setLayout(mainLayout); |
| } |
| |
| Server::~Server() |
| { |
| qDeleteAll(connections.begin(), connections.end()); |
| } |
| |
| int Server::exec() |
| { |
| if (!sctpServer->listen()) { |
| QMessageBox::critical(this, windowTitle(), |
| tr("Unable to start the server: %1.") |
| .arg(sctpServer->errorString())); |
| return QDialog::Rejected; |
| } |
| |
| QString ipAddress; |
| QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses(); |
| // use the first non-localhost IPv4 address |
| for (int i = 0; i < ipAddressesList.size(); ++i) { |
| if (ipAddressesList.at(i) != QHostAddress::LocalHost && |
| ipAddressesList.at(i).toIPv4Address()) { |
| ipAddress = ipAddressesList.at(i).toString(); |
| break; |
| } |
| } |
| // if we did not find one, use IPv4 localhost |
| if (ipAddress.isEmpty()) |
| ipAddress = QHostAddress(QHostAddress::LocalHost).toString(); |
| statusLabel->setText(tr("The server is running on\n\nIP: %1\nport: %2\n\n" |
| "Run the Multi-stream Client example now.") |
| .arg(ipAddress).arg(sctpServer->serverPort())); |
| |
| return QDialog::exec(); |
| } |
| |
| void Server::newConnection() |
| { |
| QSctpSocket *connection = sctpServer->nextPendingDatagramConnection(); |
| |
| connections.append(connection); |
| connect(connection, &QSctpSocket::channelReadyRead, this, &Server::readDatagram); |
| connect(connection, &QSctpSocket::disconnected, this, &Server::clientDisconnected); |
| |
| for (Provider *provider : providers) |
| provider->newConnection(*connection); |
| } |
| |
| void Server::clientDisconnected() |
| { |
| QSctpSocket *connection = static_cast<QSctpSocket *>(sender()); |
| |
| connections.removeOne(connection); |
| connection->disconnect(); |
| |
| for (Provider *provider : providers) |
| provider->clientDisconnected(*connection); |
| |
| connection->deleteLater(); |
| } |
| |
| void Server::readDatagram(int channel) |
| { |
| QSctpSocket *connection = static_cast<QSctpSocket *>(sender()); |
| |
| connection->setCurrentReadChannel(channel); |
| providers[channel]->readDatagram(*connection, connection->readDatagram().data()); |
| } |
| |
| void Server::writeDatagram(QSctpSocket *to, const QByteArray &ba) |
| { |
| int channel = providers.indexOf(static_cast<Provider *>(sender())); |
| |
| if (to) { |
| to->setCurrentWriteChannel(channel); |
| to->writeDatagram(ba); |
| return; |
| } |
| |
| for (QSctpSocket *connection : connections) { |
| connection->setCurrentWriteChannel(channel); |
| connection->writeDatagram(ba); |
| } |
| } |