/// <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(user.Username.GetIpAddressFromHex());
}
// 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());
}
/// <summary>
/// Разрешает указанное имя хоста в IP-адрес.
/// </summary>
/// <param name="host">Имя хоста.</param>
/// <param name="family">Желаемый тип сетевого адреса.</param>
/// <returns>IP-адрес хоста или null если хост не найден.</returns>
public static IPAddress Resolve(string host, AddressFamily family = AddressFamily.Unspecified)
{
IPAddress[] addresses;
try
{
addresses = Dns.GetHostAddresses(host);
}
catch
{
addresses = new IPAddress[0];
}
return(addresses.FirstOrDefault(a => a.AddressFamily == family || AddressFamily.Unspecified == family));
}