IsValidStrict()

static unsafe bool System.IPv6AddressHelper.IsValidStrict ( char * name, int start, ref int end )

inlinestaticpackage

Definition at line 53 of file IPv6AddressHelper.cs.

    {
        int num = 0;
        int num2 = 0;
        bool flag = false;
        bool flag2 = false;
        bool flag3 = true;
        int start2 = 1;
        bool flag4 = false;
        if (start < end && name[start] == '[')
        {
            start++;
            flag4 = true;
        }
        if (name[start] == ':' && (start + 1 >= end || name[start + 1] != ':'))
        {
            return false;
        }
        for (int i = start; i < end; i++)
        {
            if (Uri.IsHexDigit(name[i]))
            {
                num2++;
                flag3 = false;
                continue;
            }
            if (num2 > 4)
            {
                return false;
            }
            if (num2 != 0)
            {
                num++;
                start2 = i - num2;
                num2 = 0;
            }
            char c = name[i];
            if ((uint)c <= 46u)
            {
                if (c != '%')
                {
                    if (c != '.')
                    {
                        goto IL_01e6;
                    }
                    if (flag2)
                    {
                        return false;
                    }
                    i = end;
                    if (!System.IPv4AddressHelper.IsValid(name, start2, ref i, allowIPv6: true, notImplicitFile: false, unknownScheme: false))
                    {
                        return false;
                    }
                    num++;
                    start2 = i - num2;
                    num2 = 0;
                    flag2 = true;
                    i--;
                }
                else
                {
                    while (i + 1 < end)
                    {
                        i++;
                        if (name[i] == ']')
                        {
                            goto IL_00f1;
                        }
                        if (name[i] != '/')
                        {
                            continue;
                        }
                        goto IL_01b4;
                    }
                }
            }
            else
            {
                if (c == '/')
                {
                    goto IL_01b4;
                }
                if (c != ':')
                {
                    if (c == ']')
                    {
                        goto IL_00f1;
                    }
                    goto IL_01e6;
                }
                if (i > 0 && name[i - 1] == ':')
                {
                    if (flag)
                    {
                        return false;
                    }
                    flag = true;
                    flag3 = false;
                }
                else
                {
                    flag3 = true;
                }
            }
            num2 = 0;
            continue;
            IL_01e6:
            return false;
            IL_01b4:
            return false;
            IL_00f1:
            if (!flag4)
            {
                return false;
            }
            flag4 = false;
            if (i + 1 < end && name[i + 1] != ':')
            {
                return false;
            }
            if (i + 3 < end && name[i + 2] == '0' && name[i + 3] == 'x')
            {
                for (i += 4; i < end; i++)
                {
                    if (!Uri.IsHexDigit(name[i]))
                    {
                        return false;
                    }
                }
                continue;
            }
            for (i += 2; i < end; i++)
            {
                if (name[i] < '0' || name[i] > '9')
                {
                    return false;
                }
            }
        }
        if (num2 != 0)
        {
            if (num2 > 4)
            {
                return false;
            }
            num++;
        }
        if (!flag3 && (flag ? (num < 8) : (num == 8)))
        {
            return !flag4;
        }
        return false;
    }

References System.Uri.IsHexDigit(), System.IPv4AddressHelper.IsValid(), and System.start.

Referenced by System.Net.IPAddressParser.Ipv6StringToAddress().