// requests on this server have completed.
func (s *Server) Close() {
	s.mu.Lock()
	if !s.closed {
		s.closed = true
		s.Listener.Close()
		s.Config.SetKeepAlivesEnabled(false)
		for c, st := range s.conns {
			// Force-close any idle connections (those between
			// requests) and new connections (those which connected
			// but never sent a request). StateNew connections are

	}

	// SetKeepAlivesEnabled should discard idle conns.
	ts.Config.SetKeepAlivesEnabled(false)

	waitCondition(t, 10*time.Millisecond, func(d time.Duration) bool {
		if conns := tr.IdleConnStrsForTesting(); len(conns) > 0 {
			if d > 0 {
				t.Logf("idle conns %v after SetKeepAlivesEnabled called = %q; waiting for empty", d, conns)
			}
			return false
		}

func (s *Server) shuttingDown() bool {
	return s.inShutdown.Load()
}

// SetKeepAlivesEnabled controls whether HTTP keep-alives are enabled.
// By default, keep-alives are always enabled. Only very
// resource-constrained environments or servers in the process of
// shutting down should disable them.
func (srv *Server) SetKeepAlivesEnabled(v bool) {
	if v {
		srv.disableKeepAlives.Store(false)
		return
	}

pkg net/http, const StateIdle = 2
pkg net/http, const StateIdle ConnState
pkg net/http, const StateNew = 0
pkg net/http, const StateNew ConnState
pkg net/http, method (*Server) SetKeepAlivesEnabled(bool)
pkg net/http, method (ConnState) String() string
pkg net/http, type Client struct, Timeout time.Duration
pkg net/http, type ConnState int
pkg net/http, type Response struct, TLS *tls.ConnectionState

		{"(*Server).ListenAndServeTLS", Method, 0},
		{"(*Server).RegisterOnShutdown", Method, 9},
		{"(*Server).Serve", Method, 0},
		{"(*Server).ServeTLS", Method, 9},
		{"(*Server).SetKeepAlivesEnabled", Method, 3},
		{"(*Server).Shutdown", Method, 8},
		{"(*Transport).CancelRequest", Method, 1},
		{"(*Transport).Clone", Method, 13},
		{"(*Transport).CloseIdleConnections", Method, 0},