public static bool TryParseNetwork(string network, out IPRange range, out Exception exception)
{
exception = null;
range = null;
if (network == null)
{
exception = new ArgumentNullException(nameof(network));
return(false);
}
network = network.Trim();
IPAddress singleAddress;
if (IPAddress.TryParse(network, out singleAddress))
{
range = new IPRange(singleAddress, singleAddress);
return(true);
}
var pos = network.IndexOf('/');
if (pos < 0)
{
exception = new ArgumentException("Expected CIDR notation is missing network (correct example would be \"192.168.1.0/24\")", nameof(network));
return(false);
}
IPAddress networkIp;
if (!IPAddress.TryParse(network.Substring(0, pos), out networkIp))
{
exception = new ArgumentException("Cannot parse network part of IP address", nameof(network));
return(false);
}
byte cidr;
if (!byte.TryParse(network.Substring(pos + 1), out cidr))
{
exception = new ArgumentException("Cannot parse CIDR part of IP address", nameof(network));
return(false);
}
var subnetMask = networkIp.AddressFamily == AddressFamily.InterNetworkV6
? IPAddressHelper.CreateSubnetMaskIPv6(cidr)
: IPAddressHelper.CreateSubnetMaskIPv4(cidr);
var fromIp = IPAddressHelper.GetNetworkAddress(networkIp, subnetMask);
var toIp = IPAddressHelper.GetBroadcastAddress(networkIp, subnetMask);
range = new IPRange(fromIp, toIp);
return(true);
}
private bool TryGetValueIpv6(IPAddress ipAddress, out T value)
{
if (ipAddress == null)
{
throw new ArgumentNullException(nameof(ipAddress));
}
var number = IPAddressHelper.BigIntegerFromIpAddress(ipAddress);
var keys = Ipv6Keys;
var index = keys.BinarySearch(number);
if (index < 0)
{
index = Math.Abs(index) - 2;
}
if (index >= 0 && index < keys.Count)
{
BigInteger key;
try
{
key = keys[index];
}
catch (IndexOutOfRangeException)
{
value = default(T);
return(false);
}
SortedList <BigInteger, T> subDict;
if (_dictIpv6.TryGetValue(key, out subDict))
{
foreach (var pair in subDict)
{
if (number > pair.Key)
{
continue;
}
value = pair.Value;
return(true);
}
}
}
value = default(T);
return(false);
}
private void AddIPv6(IPAddress fromIp, IPAddress toIp, T value)
{
if (fromIp == null)
{
throw new ArgumentNullException(nameof(fromIp));
}
if (toIp == null)
{
throw new ArgumentNullException(nameof(toIp));
}
var fromNumber = IPAddressHelper.BigIntegerFromIpAddress(fromIp);
var toNumber = IPAddressHelper.BigIntegerFromIpAddress(toIp);
if (fromNumber > toNumber)
{
var temp = fromNumber;
fromNumber = toNumber;
toNumber = temp;
}
SortedList <BigInteger, T> subDict;
if (!_dictIpv6.TryGetValue(fromNumber, out subDict))
{
subDict = new SortedList <BigInteger, T>(1);
subDict[toNumber] = value;
_dictIpv6[fromNumber] = subDict;
}
else
{
subDict[toNumber] = value;
}
_count = -1;
_ipv6Keys = null;
}
