Re: [PATCH v4 2/4] util/qemu-sockets.c: Split host:port parsing out of inet_parse

[Samuel Thibault]

Markus Armbruster, le lun. 01 mars 2021 09:15:41 +0100, a ecrit:
> Samuel Thibault <samuel.thibault@gnu.org> writes:
> > Specifying [127.0.0.1] would be odd, but for instance 
> >
> > ssh localhost -D '[127.0.0.1]':23456
> >
> > happens to listen on 127.0.0.1. So I would say that common practice
> > really is that [] only matters for syntax, and not semantic.
> 
> I believe common syntactic practice is to use [brackets] only around
> numeric IPv6 addresses.  E.g. socat(1):
> 
>        IP address
>               An IPv4 address in numbers-and-dots notation, an IPv6 address in
>               hex notation enclosed in brackets, or a hostname  that  resolves
>               to an IPv4 or an IPv6 address.
>               Examples: 127.0.0.1, [::1], www.dest-unreach.org, dns1

Yes and that's also what ssh documents, but in ssh the brackets happen
to also work for an IPv4 address.

Samuel