Networking

[!TIP] This article provides specific information about Uno within the Windows.Networking namespace. For a comprehensive overview of the feature and guidance on how to use it, visit Windows.Networking.

The Windows.Networking namespace offers classes to access and manage network connections within your app.

NetworkInformation

The Windows.Networking.Connectivity.NetworkInformation class provides access to network connection information and allows you to monitor changes in network connectivity. For more details, refer to the official documentation: NetworkInformation Class.

Supported features

Checking Network Connectivity in Uno

For more detailed guidance on network connectivity, watch our video tutorial:

[!Video https://www.youtube-nocookie.com/embed/sK9IbkBAXIo]

Platform-specific

Android

Android recognizes all values of the NetworkConnectivityLevel enum. In contrast, iOS, macOS, and WASM only return either None or InternetAccess.

The android.permission.ACCESS_NETWORK_STATE permission is necessary and must be included in the application manifest or specified using the following attribute in the Android platform head:

[assembly: UsesPermission("android.permission.ACCESS_NETWORK_STATE")]

iOS/macOS reachability host name

iOS and macOS use a 'ping' request to check internet connectivity. The default domain is www.example.com; however, you can change it to any other domain by setting the WinRTFeatureConfiguration.NetworkInformation.ReachabilityHostname property.

WinRTFeatureConfiguration.NetworkInformation.ReachabilityHostname = "platform.uno";

Example

Checking for internet connectivity

Use the snippet below to check internet connectivity levels in a cross-platform manner.

using Windows.Networking.Connectivity;

var profile = NetworkInformation.GetInternetConnectionProfile();
var level = profile?.GetNetworkConnectivityLevel();
if (level is NetworkConnectivityLevel.InternetAccess)
{
    // Connected to the internet
}

Observing changes in connectivity

Use the following snippet to observe changes in connectivity:

using Windows.Networking.Connectivity;

NetworkInformation.NetworkStatusChanged += NetworkInformation_NetworkStatusChanged;

private void NetworkInformation_NetworkStatusChanged(object sender)
{
    // read the current connectivity state/level
    var profile = NetworkInformation.GetInternetConnectionProfile();
    var level = profile?.GetNetworkConnectivityLevel();
}

Unsubscribing from the changes

NetworkInformation.NetworkStatusChanged -= NetworkInformation_NetworkStatusChanged;