The endpoint parser previously only handled dotted IPv4 syntax
('10.0.2.15:80'). Extend it to accept the dual form that this same
change adds to relibc:
[hh:hh:hh:hh:hh:hh:hh:hh]:port (global)
[hh:hh:hh:hh:hh:hh:hh:hh%scope]:port (link-local w/ scope)
The presence of '[' at the start is the unambiguous discriminator: in
that case the rest up to ']' is the host and everything after is the
port. Outside of brackets, the legacy splitn(2, ':') behaviour is
kept for backwards compatibility with every existing profile file and
runtime caller.
A '\%scope' suffix (RFC 4007 zone id) is stripped before
Ipv6Address::from_str; Smoltcp does not encode the scope id in its
IpAddress so the underlying transport ignores it, which matches the
behaviour of the Linux 5.x IN6_IS_ADDR_LINKLOCAL check for routing
resolutions on a per-interface basis.
Red Bear OS
20d805ed37