private void NetworkChange_NetworkAddressChanged(object sender, EventArgs e)
{
var loopbacks = new[] { NetworkInterfaceType.Loopback, NetworkInterfaceType.Tunnel };
// look through all interfaces for the one whose address has changed
foreach (var nic in NetworkInterface.GetAllNetworkInterfaces())
{
// skip loopback & tunnel interfaces
if (loopbacks.Contains(nic.NetworkInterfaceType))
{
continue;
}
var ntwkInfo = new NetworkConnectionInfo(nic);
if (nicState[nic.Id] == OperationalStatus.Up &&
nic.OperationalStatus == OperationalStatus.Down) // disconnect = Up -> Down
{
OnNetworkDisconnect(new NetworkDisconnectEventArgs(nic));
break;
}
else if (nicState[nic.Id] != OperationalStatus.Up &&
nic.OperationalStatus == OperationalStatus.Up) // connect = any state -> Up
{
OnNetworkConnect(new NetworkConnectEventArgs(nic));
break;
}
else if (!nicAddress[nic.Id].Equals(ntwkInfo.IPv4Address)) // changed address
{
OnNetworkAddressChanged(new NetworkAddressChangedEventArgs(ntwkInfo));
break;
}
}
}
static PropertyNames()
{
var n = new NetworkConnectionInfo(null);
AutoAssignedIP = GetPropertyName(() => n.AutoAssignedIPAddress);
DefaultGateway = GetPropertyName(() => n.DefaultGateway);
DhcpServer = GetPropertyName(() => n.DhcpServer);
DnsServer = GetPropertyName(() => n.DnsServer);
DnsSuffix = GetPropertyName(() => n.DnsSuffix);
IPv4Address = GetPropertyName(() => n.IPv4Address);
IPv4Subnet = GetPropertyName(() => n.IPv4SubnetMask);
NetworkInterface = GetPropertyName(() => n.NetworkInterface);
}
/// <summary>Reads the JSON representation of the object.</summary>
/// <param name="reader">The <see cref="T:Newtonsoft.Json.JsonReader" /> to read from.</param>
/// <param name="objectType">Type of the object.</param>
/// <param name="existingValue">The existing value of object being read.</param>
/// <param name="serializer">The calling serializer.</param>
/// <returns>The object value.</returns>
public override object ReadJson(JsonReader reader, Type objectType,
object existingValue, JsonSerializer serializer)
{
var ni = new NetworkConnectionInfo(null);
while (reader.Read())
{
if (reader.TokenType == JsonToken.EndObject)
{
break;
}
if (reader.TokenType != JsonToken.PropertyName)
{
continue;
}
var propName = reader.Value.ToString(); // property name
if (PropertyNames.GetIPAddressPropertyNames().Contains(propName))
{
var values = reader.ReadAsString().Split(new[] { sep }, StringSplitOptions.RemoveEmptyEntries);
ni.ntwkInfo[propName] = values.Select(s => IPAddress.Parse(s)).ToArray();
}
else if (propName == PropertyNames.NetworkInterface)
{
// add a json converter for NetworkInterfaceInternal if none present
if (!serializer.Converters.Where(c => c.CanConvert(typeof(NetworkInterfaceInternal))).Any())
{
serializer.Converters.Add(new NetworkInterfaceInternal.JsonConverter());
}
reader.Read();
ni.nic = serializer.Deserialize <NetworkInterfaceInternal>(reader);
}
else if (propName == PropertyNames.AutoAssignedIP)
{
ni._autoAssignedAddress = bool.Parse(reader.ReadAsString());
}
else if (propName == PropertyNames.DnsSuffix)
{
ni._dnsSuffix = reader.ReadAsString();
}
}
return(ni);
}
/// <summary>
/// Initializes a new instance of the <see cref="NetworkAddressChangedEventArgs" /> class.
/// </summary>
/// <param name="networkInfo">The network information.</param>
public NetworkAddressChangedEventArgs(NetworkConnectionInfo networkInfo)
{
_ni = networkInfo;
}
