Networking Status

Applications needing to access the overall system networking status must access the ubuntu::connectivity::NetworkingStatus class. The class has properties for the networking status and connection limitations of the system networking.

Accessing the networking status from confined applications requires the connectivity policy group.

# Setup

Manager is accessed by including the appropriate header:

#include <connectivityqt/connectivity.h>
using namespace connectivityqt;

and then creating an instance of the NetworkingStatus:

QScopedPointer<Connectivity> ns(new Connectivity());

# Networking Status

## Status

The status of the system networking can be accessed through the ubuntu::connectivity::NetworkingStatus::status property:

// normal getter
if (ns->status() == Connectivity::Status::Online)
{
qDebug() << "We are online.";
}
// Subscribe to system networking changes
QObject::connect(ns.data(),
&Connectivity::statusUpdated,
[](Connectivity::Status value)
{
qDebug() << "System networking status changed to: " + STATUS_MAP[value];
});

## Limitations

The limitations can be accessed through the ubuntu::connectivity::NetworkingStatus::limitations property:

// normal getter
if (ns->limitations().isEmpty())
qDebug() << "No limitations";
// Subscribe to limitation changes
QObject::connect(ns.data(),
&Connectivity::limitationsUpdated,
[&ns](){
if (ns->limitations().isEmpty())
{
qDebug() << "No limitations.";
return;
}
qDebug() << "Limitations:";
if (ns->limitations().contains(Connectivity::Limitations::Bandwith))
{
qDebug() << " - Bandwith";
}
});

The complete example (found in examples/example_networking_status.cpp):

/*
* Copyright © 2014 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authors:
* Antti Kaijanmäki <antti.kaijanmaki@canonical.com>
*/
#include <QCoreApplication>
#include <QScopedPointer>
#include <QDebug>
#include <connectivityqt/connectivity.h>
using namespace connectivityqt;
static const QMap<Connectivity::Status, QString> STATUS_MAP {
{Connectivity::Status::Offline, "Offline"},
{Connectivity::Status::Connecting, "Connecting"},
{Connectivity::Status::Online, "Online"},
};
int
main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
QScopedPointer<Connectivity> ns(new Connectivity());
// normal getter
if (ns->status() == Connectivity::Status::Online)
{
qDebug() << "We are online.";
}
// Subscribe to system networking changes
QObject::connect(ns.data(),
&Connectivity::statusUpdated,
[](Connectivity::Status value)
{
qDebug() << "System networking status changed to: " + STATUS_MAP[value];
});
qDebug() << "System networking status: " + STATUS_MAP[ns->status()];
// normal getter
if (ns->limitations().isEmpty())
qDebug() << "No limitations";
// Subscribe to limitation changes
QObject::connect(ns.data(),
&Connectivity::limitationsUpdated,
[&ns](){
if (ns->limitations().isEmpty())
{
qDebug() << "No limitations.";
return;
}
qDebug() << "Limitations:";
if (ns->limitations().contains(Connectivity::Limitations::Bandwith))
{
qDebug() << " - Bandwith";
}
});
app.exec();
return 0;
}