I think you've misunderstood the purpose of that package and the relevant standards. An IPv4 address is syntactically a valid domain name and thus no error occurs. The ToASCII conversion is a nop in this case since there are no non-ASCII characters. An IPv6 address is not a syntactically valid domain name so you'll get an error. There is nothing about the conversion process that requires validating whether the TLD (the right-most "100" in your example) is in fact a valid TLD.
On Sat, Nov 12, 2022 at 8:22 AM redder <justma...@gmail.com> wrote: > https://go.dev/play/p/HdLLJz0uz2q > > idna.Registration.ToASCII("100.100.100.100") doesn't return an error. > Surely an IPv4 address can never be registered as a domain name and so this > should return an error? I just need confirmation: is this function working > as expected or is this a bug? > > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/golang-nuts/792a7e4a-3335-40c2-8fe9-fca394d2f988n%40googlegroups.com > <https://groups.google.com/d/msgid/golang-nuts/792a7e4a-3335-40c2-8fe9-fca394d2f988n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- Kurtis Rader Caretaker of the exceptional canines Junior and Hank -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CABx2%3DD8ye97zh6TPvW9j_Lme_Jx1UCYdeajM3hDQdqxv%3DE21EQ%40mail.gmail.com.
