visual-studio-2005 - 为什么 IPAddress.TryParse 允许“]”之后的任何内容

Question

我想使用 System.Net.IPAddress.TryParse 来验证 IPv6 地址，因为我不想编写自己的 reg exp :-)

但是，这似乎允许诸如“(validIPv6)](anythingatallhere)”之类的字符串 - 例如，“1234::5678:abcd]whargarbl”。

这些是否有效，或者这是一个错误？

由于我实际上只想要 "[(validIPv6)]:(portnumber)" 形式的字符串，因此我将不得不自己做一些验证。

Answer 1

I was looking through reflector and it seems that if your current OS does not support IPV6 a parse routine is called that will ignore everything past the final ']' character.

This here seems to be the offending code, take notice of the second or condition as it relates to the preceding bit of code.

int length = ipString.Length;
fixed (char* str2 = ((char*) ipString))
{
    char* name = str2;
    if (IPv6AddressHelper.IsValid(name, start, ref length) || (length != ipString.Length))