A hostname with Unicode characters is valid in Windows 8
问题 Uri.CheckHostName("контосо.ком") returns UriHostNameType.Unknown everywhere, but on Windows 8, where it returns UriHostNameType.Dns . Any ideas why all of a sudden a hostname with Unicode/Cyrillic characters is valid in Windows 8? 回答1: Because of this. Internationalized domain name http://en.wikipedia.org/wiki/Internationalized_domain_name http://tools.ietf.org/html/rfc5895 来源: https://stackoverflow.com/questions/14075023/a-hostname-with-unicode-characters-is-valid-in-windows-8