/// <summary>
/// The get ip address.
/// </summary>
/// <param name="user">
/// The user.
/// </param>
/// <returns>
/// The <see cref="IPAddress"/>.
/// </returns>
private IPAddress GetIpAddress(IUser user)
{
if (user.Hostname.Contains("/"))
{
// cloaked. hmm...
// gateway, try username
var validHexIp = new Regex("^[0-9A-Fa-f]{8}$");
if (validHexIp.IsMatch(user.Username))
{
return Decode.GetIpAddressFromHex(user.Username);
}
// not a gateway cloak. Can't do anything.
return null;
}
// resolve hostname
IPAddress[] addresses = new IPAddress[0];
try
{
addresses = Dns.GetHostEntry(user.Hostname).AddressList;
}
catch (SocketException)
{
}
return addresses.FirstOrDefault();
}