public static bool IsNetworkAvailable(string excludeIps = null)
{
// If no adapters available then return false;
if (!NetworkInterface.GetIsNetworkAvailable())
{
return(false);
}
var nics = NetworkInterface.GetAllNetworkInterfaces();
var badTypes = new NetworkInterfaceType[] { NetworkInterfaceType.Tunnel, NetworkInterfaceType.Loopback };
var goodFamily = new AddressFamily[] { AddressFamily.InterNetwork, AddressFamily.InterNetworkV6 };
foreach (var nic in nics)
{
// If network interface is not up then skip.
if (nic.OperationalStatus != OperationalStatus.Up)
{
continue;
}
// If interface type is invalid then skip.
if (badTypes.Contains(nic.NetworkInterfaceType))
{
continue;
}
// Get IP4 and IP6 statistics.
//var stats = nic.GetIPStatistics();
// If no data send or received then skip.
//if (stats.BytesSent == 0 || stats.BytesReceived == 0)
// continue;
// Loop trough IP address properties.
var properties = nic.GetIPProperties();
for (var a = 0; a < properties.UnicastAddresses.Count; a++)
{
var address = properties.UnicastAddresses[a].Address;
// If not IP4 or IP6 then continue.
if (!goodFamily.Contains(address.AddressFamily))
{
continue;
}
// If loop back then continue.
if (IPAddress.IsLoopback(address))
{
continue;
}
// If excluded IP then continue.
if (excludeIps != null && IsExcludedIp(address.ToString(), excludeIps))
{
continue;
}
// Address passed availability.
return(true);
}
}
return(false);
}