Simple cross platform plugin to check connection status of mobile device, gather connection type, bandwidths, and more.

• Available on NuGet: http://www.nuget.org/packages/Xam.Plugin.Connectivity
• Install into your PCL project and Client projects.

Build Status:

• 
• CI NuGet Feed: https://ci.appveyor.com/nuget/connectivityplugin

Platform Support

Call CrossConnectivity.Current from any project or PCL to gain access to APIs.

IsConnected

/// <summary>
/// Gets if there is an active internet connection
/// </summary>
bool IsConnected { get; }

ConnectionTypes

/// <summary>
/// Gets the list of all active connection types.
/// </summary>
IEnumerable<ConnectionType> ConnectionTypes { get; }

Bandwidths

/// <summary>
/// Retrieves a list of available bandwidths for the platform.
/// Only active connections.
/// </summary>
IEnumerable<UInt64> Bandwidths { get; }

IsReachable

/// <summary>
/// Tests if a host name is pingable
/// </summary>
/// <param name="host">The host name can either be a machine name, such as "java.sun.com", or a textual representation of its IP address (127.0.0.1)</param>
/// <param name="msTimeout">Timeout in milliseconds</param>
/// <returns></returns>
Task<bool> IsReachable(string host, int msTimeout = 5000);

IsRemoteReachable

/// <summary>
/// Tests if a remote host name is reachable (no http:// or www.)
/// </summary>
/// <param name="host">Host name can be a remote IP or URL of website</param>
/// <param name="port">Port to attempt to check is reachable.</param>
/// <param name="msTimeout">Timeout in milliseconds.</param>
/// <returns></returns>
Task<bool> IsRemoteReachable(string host, int port = 80, int msTimeout = 5000);

When any network connectiivty is gained, changed, or loss you can register for an event to fire:

/// <summary>
/// Event handler when connection changes
/// </summary>
event ConnectivityChangedEventHandler ConnectivityChanged; 

You will get a ConnectivityChangeEventArgs with the status if you are connected or not:

public class ConnectivityChangedEventArgs : EventArgs
{
  public bool IsConnected { get; set; }
}

public delegate void ConnectivityChangedEventHandler(object sender, ConnectivityChangedEventArgs e);

Usage sample from Xamarin.Forms:

CrossConnectivity.Current.ConnectivityChanged += (sender, args) =>
  {
    page.DisplayAlert("Connectivity Changed", "IsConnected: " + args.IsConnected.ToString(), "OK");
  };

The ACCESS_NETWORK_STATE and ACCESS_WIFI_STATE permissions are required and will be automatically added to your Android Manifest.

By adding these permissions Google Play will automatically filter out devices without specific hardware. You can get around this by adding the following to your AssemblyInfo.cs file in your Android project:

[assembly: UsesFeature("android.hardware.wifi", Required = false)]

Bandwidths are not supported and will always return an empty list.

Older versions of this sample included the method reachabilityForLocalWiFi. As originally designed, this method allowed apps using Bonjour to check the status of "local only" Wi-Fi (Wi-Fi without a connection to the larger internet) to determine whether or not they should advertise or browse.

However, the additional peer-to-peer APIs that have since been added to iOS and OS X have rendered it largely obsolete. Because of the narrow use case for this API and the large potential for misuse, reachabilityForLocalWiFi has been removed from Reachability.

Apps that have a specific requirement can use reachabilityWithAddress to monitor IN_LINKLOCALNETNUM (that is, 169.254.0.0).

Note: ONLY apps that have a specific requirement should be monitoring IN_LINKLOCALNETNUM. For the overwhelming majority of apps, monitoring this address is unnecessary and potentially harmful.

RT apps can not perform loopback, so you can not use IsReachable to query the states of a local IP.

####Permissions to think about: The Private Networks (Client & Server) capability is represented by the Capability name = "privateNetworkClientServer" tag in the app manifest. The Internet (Client & Server) capability is represented by the Capability name = "internetClientServer" tag in the app manifest.