}

// LookupSRV tries to resolve an [SRV] query of the given service,
// protocol, and domain name. The proto is "tcp" or "udp".
// The returned records are sorted by priority and randomized
// by weight within a priority.
//
// LookupSRV constructs the DNS name to look up following RFC 2782.
// That is, it looks up _service._proto.name. To accommodate services

			t.Errorf("LookupIP wrong.\n got: %q\nwant: %q\n", got, want)
		}
	})

	t.Run("LookupSRV", func(t *testing.T) {
		_, got, err := r.LookupSRV(ctx, "some-service", "tcp", fakeDomain)
		if err != nil {
			t.Fatal(err)
		}
		want := []*SRV{
			{
				Target:   "foo.bar.",
				Port:     80,
				Priority: 1,
				Weight:   2,

				break
			}
		}
	}

	cname, srvs, err := LookupSRV("ldap", "tcp", "google.com")
	if err != nil {
		t.Errorf("LookupSRV(ldap, tcp, google.com): %v (mode=%v)", err, mode)
	} else {
		if !hasSuffixFold(cname, ".google.com.") {
			t.Errorf("LookupSRV(ldap, tcp, google.com) returned cname=%v, want name ending in .google.com. with trailing dot (mode=%v)", cname, mode)
		}

	if order == hostLookupCgo {
		if cname, err, ok := cgoLookupCNAME(ctx, name); ok {
			return cname, err
		}
	}
	return r.goLookupCNAME(ctx, name, order, conf)
}

func (r *Resolver) lookupSRV(ctx context.Context, service, proto, name string) (string, []*SRV, error) {
	return r.goLookupSRV(ctx, service, proto, name)
}

func (r *Resolver) lookupMX(ctx context.Context, name string) ([]*MX, error) {

			name: "SRV (bad header)",
			f: func(t *testing.T) {
				_, _, err := r.LookupSRV(context.Background(), "hdr", "tcp", "golang.org.")
				if expected := "lookup golang.org.: SRV header name is invalid"; err == nil || err.Error() != expected {
					t.Errorf("Resolver.LookupSRV returned unexpected error, got %q, want %q", err, expected)
				}
				_, _, err = LookupSRV("hdr", "tcp", "golang.org.")

	}
	if len(lines) > 0 {
		if f := getFields(lines[0]); len(f) >= 3 {
			return f[2] + ".", nil
		}
	}
	return "", errors.New("bad response from ndb/dns")
}

func (r *Resolver) lookupSRV(ctx context.Context, service, proto, name string) (cname string, addrs []*SRV, err error) {
	if systemConf().mustUseGoResolver(r) {
		return r.goLookupSRV(ctx, service, proto, name)
	}
	var target string

	defer syscall.DnsRecordListFree(rec, 1)

	resolved := resolveCNAME(syscall.StringToUTF16Ptr(name), rec)
	cname := windows.UTF16PtrToString(resolved)
	return absDomainName(cname), nil
}

func (r *Resolver) lookupSRV(ctx context.Context, service, proto, name string) (string, []*SRV, error) {
	if systemConf().mustUseGoResolver(r) {
		return r.goLookupSRV(ctx, service, proto, name)
	}
	// TODO(bradfitz): finish ctx plumbing

pkg net, method (*Resolver) LookupNS(context.Context, string) ([]*NS, error)
pkg net, method (*Resolver) LookupPort(context.Context, string, string) (int, error)
pkg net, method (*Resolver) LookupSRV(context.Context, string, string, string) (string, []*SRV, error)
pkg net, method (*Resolver) LookupTXT(context.Context, string) ([]string, error)
pkg net, method (*UnixListener) SetUnlinkOnClose(bool)

		{"(*Resolver).LookupMX", Method, 8},
		{"(*Resolver).LookupNS", Method, 8},
		{"(*Resolver).LookupNetIP", Method, 18},
		{"(*Resolver).LookupPort", Method, 8},
		{"(*Resolver).LookupSRV", Method, 8},
		{"(*Resolver).LookupTXT", Method, 8},
		{"(*TCPAddr).AddrPort", Method, 18},
		{"(*TCPAddr).Network", Method, 0},
		{"(*TCPAddr).String", Method, 0},
		{"(*TCPConn).Close", Method, 0},

pkg net, func LookupHost(string) ([]string, error)
pkg net, func LookupIP(string) ([]IP, error)
pkg net, func LookupMX(string) ([]*MX, error)
pkg net, func LookupPort(string, string) (int, error)
pkg net, func LookupSRV(string, string, string) (string, []*SRV, error)
pkg net, func LookupTXT(string) ([]string, error)
pkg net, func ParseCIDR(string) (IP, *IPNet, error)
pkg net, func ParseIP(string) IP