}

// FROM: http://golang.org/src/net/http/transport.go
// canonicalAddr returns url.Host but always with a ":port" suffix
func CanonicalAddr(url *url.URL) string {
	addr := url.Host
	if !hasPort(addr) {
		return addr + ":" + portMap[url.Scheme]
	}
	return addr

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

	logger.FatalIf(err, "Unable to get IP addresses of this host")

	for _, interf := range ifs {
		addrs, err := interf.Addrs()
		if err != nil {
			continue
		}
		if runtime.GOOS == "windows" && interf.Flags&net.FlagUp == 0 {
			continue
		}

		for _, addr := range addrs {
			var ip net.IP
			switch v := addr.(type) {
			case *net.IPNet:
				ip = v.IP
			case *net.IPAddr:
				ip = v.IP
			}

			ipsCp := make([]string, len(byName.addrs))
			copy(ipsCp, byName.addrs)
			return ipsCp, byName.canonicalName
		}
	}
	return nil, ""
}

// lookupStaticAddr looks up the hosts for the given address from /etc/hosts.
func lookupStaticAddr(addr string) []string {
	hosts.Lock()
	defer hosts.Unlock()
	readHosts()
	addr = parseLiteralIP(addr)
	if addr == "" {
		return nil
	}

				}
			}
			if !found {
				return fmt.Errorf("unexpected address for endpoint %d: %v", i, addr)
			}
		}
	}
	return nil
}

func getLbEndpointAddrs(ep *endpointv3.LocalityLbEndpoints) []string {
	addrs := make([]string, 0)
	for _, lbEp := range ep.LbEndpoints {
		addrs = append(addrs, util.GetEndpointHost(lbEp))
	}
	return addrs

		want6 = bytealg.CountString(addr, '[') > 0
	}
	if want6 {
		return addrs.first(isNotIPv4)
	}
	return addrs.first(isIPv4)
}

// first returns the first address which satisfies strategy, or if
// none do, then the first address of any kind.
func (addrs addrList) first(strategy func(Addr) bool) Addr {
	for _, addr := range addrs {
		if strategy(addr) {
			return addr
		}
	}

	defer cancel()
	var addrs []netip.Addr
	var lookupErr error
	if (len(lookupIPAddr) > 0) && (lookupIPAddr[0] != nil) {
		// if there are more than one lookup function, ignore all but first
		addrs, lookupErr = lookupIPAddr[0](ctx, host)
	} else {
		addrs, lookupErr = net.DefaultResolver.LookupNetIP(ctx, "ip", host)
	}
	if lookupErr != nil || len(addrs) == 0 {

func (c *IPConn) WriteToIP(b []byte, addr *IPAddr) (int, error) {
	if !c.ok() {
		return 0, syscall.EINVAL
	}
	n, err := c.writeTo(b, addr)
	if err != nil {
		err = &OpError{Op: "write", Net: c.fd.net, Source: c.fd.laddr, Addr: addr.opAddr(), Err: err}
	}
	return n, err
}

// WriteTo implements the [PacketConn] WriteTo method.
func (c *IPConn) WriteTo(b []byte, addr Addr) (int, error) {
	if !c.ok() {

		addr, err := ResolveIPAddr(tt.network, tt.litAddrOrName)
		if !reflect.DeepEqual(addr, tt.addr) || !reflect.DeepEqual(err, tt.err) {
			t.Errorf("ResolveIPAddr(%q, %q) = %#v, %v, want %#v, %v", tt.network, tt.litAddrOrName, addr, err, tt.addr, tt.err)
			continue
		}
		if err == nil {
			addr2, err := ResolveIPAddr(addr.Network(), addr.String())
			if !reflect.DeepEqual(addr2, tt.addr) || err != tt.err {

	MOV	addr+0(FP), X10
	MOV	sz+8(FP), X11
	MOV	sp+16(FP), X12
	MOV	pc+24(FP), X13
	// void __asan_write_go(void *addr, uintptr_t sz);
	MOV	$__asan_write_go(SB), X14
	JMP	asancall<>(SB)

// func runtime·asanunpoison(addr unsafe.Pointer, sz uintptr)
TEXT	runtime·asanunpoison(SB), NOSPLIT, $0-16
	MOV	addr+0(FP), X10
	MOV	sz+8(FP), X11
	// void __asan_unpoison_go(void *addr, uintptr_t sz);
	MOV	$__asan_unpoison_go(SB), X14