/// <summary>
/// Begins an async call to get the external ip address of the router
/// </summary>
public override IAsyncResult BeginGetExternalIP(AsyncCallback callback, object asyncState)
{
// Create the port map message
GetExternalIPAddressMessage message = new GetExternalIPAddressMessage(this);
return(BeginMessageInternal(message, callback, asyncState, EndGetExternalIPInternal));
}
public override async Task <IPAddress> GetExternalIPAsync()
{
var message = new GetExternalIPAddressMessage(this);
var response = await SendMessageAsync(message).ConfigureAwait(false);
if (!(response is GetExternalIPAddressResponseMessage msg))
{
throw new MappingException(ErrorCode.Unknown, "Invalid response received when getting the external IP address");
}
return(msg.ExternalIPAddress);
}