// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Minimal RFC 6724 address selection.

package net

import (
	"net/netip"
	"sort"
)

func sortByRFC6724(addrs []IPAddr) {
	if len(addrs) < 2 {
		return
	}
	sortByRFC6724withSrcs(addrs, srcAddrs(addrs))
}

func sortByRFC6724withSrcs(addrs []IPAddr, srcs []netip.Addr) {
	if len(addrs) != len(srcs) {

	for _, haddr := range addr {
		haddr, zone := splitHostZone(haddr)
		if ip := ParseIP(haddr); ip != nil {
			addr := IPAddr{IP: ip, Zone: zone}
			addrs = append(addrs, addr)
		}
	}
	sortByRFC6724(addrs)
	return addrs, canonical
}

// goLookupIP is the native Go implementation of LookupIP.
// The libc versions are in cgo_*.go.