)

// getLocalIP returns one of the local IP address and it should support IPv6 or not
func getLocalIP(dualStack bool) (netip.Addr, bool, error) {
	var isIPv6 bool
	var ipAddrs []netip.Addr
	addrs, err := LocalIPAddrs()
	if err != nil {
		return netip.Addr{}, isIPv6, err
	}

	for _, a := range addrs {
		if ipnet, ok := a.(*net.IPNet); ok {
			ip := ipnet.IP
			ipAddr, ok := netip.AddrFromSlice(ip)
			if !ok {

			value1, value2, value3 := sample[2], sample[1], sample[3]
			addrs, err := parseHexAddresses(value3)
			if err != nil {
				return nil, nil, fmt.Errorf("malformed sample: %s: %v", line, err)
			}

			var sloc []*Location
			for _, addr := range addrs {
				loc := locs[addr]
				if locs[addr] == nil {
					loc = &Location{
						Address: addr,
					}
					p.Location = append(p.Location, loc)

		}).DialContext
	}

	return func(ctx context.Context, network, addr string) (conn net.Conn, err error) {
		host, port, err := net.SplitHostPort(addr)
		if err != nil {
			return nil, err
		}

		if net.ParseIP(host) != nil {
			// For IP only setups there is no need for DNS lookups.
			return baseDialCtx(ctx, "tcp", addr)
		}

		ips, err := lookupHost(ctx, host)
		if err != nil {
			return nil, err

Michael Weiner <******@****.***> 1697542898 -0500

	}))
	if _, err := cst.c.Head(cst.ts.URL); err != nil {
		t.Fatal(err)
	}

	host := cst.ts.Listener.Addr().String()
	got := <-ch
	if addr, ok := got.(net.Addr); !ok {
		t.Errorf("local addr value = %T; want net.Addr", got)
	} else if fmt.Sprint(addr) != host {
		t.Errorf("local addr = %v; want %v", addr, host)
	}
}

// https://golang.org/issue/15960

	// Find IP addr of excluded interfaces and add to a map for instant lookup
	for _, ifaceName := range exclusions {
		iface, err := net.InterfaceByName(ifaceName)
		if err != nil {
			log.Warnf("Unable to get interface %s: %v", ifaceName, err)
			continue
		}
		addrs, err := iface.Addrs()
		if err != nil {
			log.Warnf("Unable to get IP addr(s) of interface %s: %v", ifaceName, err)
			continue

	}
	releaseSudog(s)
}

func semrelease(addr *uint32) {
	semrelease1(addr, false, 0)
}

func semrelease1(addr *uint32, handoff bool, skipframes int) {
	root := semtable.rootFor(addr)
	atomic.Xadd(addr, 1)

	// Easy case: no waiters?
	// This check must happen after the xadd, to avoid a missed wakeup
	// (see loop in semacquire).
	if root.nwait.Load() == 0 {
		return
	}

	Namlen uint16
	Name   [256]uint8
}

type RawSockaddrInet4 struct {
	Len    uint8
	Family uint8
	Port   uint16
	Addr   [4]byte /* in_addr */
	Zero   [8]uint8
}

type RawSockaddrInet6 struct {
	Len      uint8
	Family   uint8
	Port     uint16
	Flowinfo uint32
	Addr     [16]byte /* in6_addr */
	Scope_id uint32
}

type RawSockaddrUnix struct {
	Len    uint8
	Family uint8

	}

	return ""
}

func retrieveListenerAdditionalAddresses(l *listener.Listener) []string {
	var addrs []string
	socketAddresses := l.GetAdditionalAddresses()
	for _, socketAddr := range socketAddresses {
		addr := socketAddr.Address
		addrs = append(addrs, addr.GetSocketAddress().Address)
	}

	return addrs
}

func retrieveListenerPort(l *listener.Listener) uint32 {

	Pad_cgo_0 [4]byte
}

type RawSockaddrInet4 struct {
	Len    uint8
	Family uint8
	Port   uint16
	Addr   [4]byte /* in_addr */
	Zero   [8]uint8
}

type RawSockaddrInet6 struct {
	Len      uint8
	Family   uint8
	Port     uint16
	Flowinfo uint32
	Addr     [16]byte /* in6_addr */
	Scope_id uint32
}

type RawSockaddrUnix struct {
	Len    uint8
	Family uint8