public static bool TryParse(string ipString, out IPv6Address result)
{
result = null;
if (ipString == null)
{
return(false);
}
if (ipString.Length > 2 && ipString[0] == '[' && ipString[ipString.Length - 1] == ']')
{
ipString = ipString.Substring(1, ipString.Length - 2);
}
if (ipString.Length < 2)
{
return(false);
}
int num = 0;
int num2 = 0;
int num3 = ipString.LastIndexOf('/');
if (num3 != -1)
{
string prefix = ipString.Substring(num3 + 1);
if (!IPv6Address.TryParse(prefix, out num))
{
num = -1;
}
if (num < 0 || num > 128)
{
return(false);
}
ipString = ipString.Substring(0, num3);
}
else
{
num3 = ipString.LastIndexOf('%');
if (num3 != -1)
{
string prefix2 = ipString.Substring(num3 + 1);
if (!IPv6Address.TryParse(prefix2, out num2))
{
num2 = 0;
}
ipString = ipString.Substring(0, num3);
}
}
ushort[] array = new ushort[8];
bool flag = false;
int num4 = ipString.LastIndexOf(':');
if (num4 == -1)
{
return(false);
}
int num5 = 0;
if (num4 < ipString.Length - 1)
{
string text = ipString.Substring(num4 + 1);
if (text.IndexOf('.') != -1)
{
IPAddress ipaddress;
if (!IPAddress.TryParse(text, out ipaddress))
{
return(false);
}
long internalIPv4Address = ipaddress.InternalIPv4Address;
array[6] = (ushort)(((int)(internalIPv4Address & 255L) << 8) + (int)(internalIPv4Address >> 8 & 255L));
array[7] = (ushort)(((int)(internalIPv4Address >> 16 & 255L) << 8) + (int)(internalIPv4Address >> 24 & 255L));
if (num4 > 0 && ipString[num4 - 1] == ':')
{
ipString = ipString.Substring(0, num4 + 1);
}
else
{
ipString = ipString.Substring(0, num4);
}
flag = true;
num5 = 2;
}
}
int num6 = ipString.IndexOf("::");
if (num6 != -1)
{
int num7 = IPv6Address.Fill(array, ipString.Substring(num6 + 2));
if (num7 == -1)
{
return(false);
}
if (num7 + num5 > 8)
{
return(false);
}
int num8 = 8 - num5 - num7;
for (int i = num7; i > 0; i--)
{
array[i + num8 - 1] = array[i - 1];
array[i - 1] = 0;
}
int num9 = IPv6Address.Fill(array, ipString.Substring(0, num6));
if (num9 == -1)
{
return(false);
}
if (num9 + num7 + num5 > 7)
{
return(false);
}
}
else if (IPv6Address.Fill(array, ipString) != 8 - num5)
{
return(false);
}
bool flag2 = false;
for (int j = 0; j < num5; j++)
{
if (array[j] != 0 || (j == 5 && array[j] != 65535))
{
flag2 = true;
}
}
if (flag && !flag2)
{
for (int k = 0; k < 5; k++)
{
if (array[k] != 0)
{
return(false);
}
}
if (array[5] != 0 && array[5] != 65535)
{
return(false);
}
}
result = new IPv6Address(array, num, num2);
return(true);
}
