// someTimeout is used just to test that net.Conn implementations
// don't explode when their SetFooDeadline methods are called.
// It isn't actually used for testing timeouts.
const someTimeout = 1 * time.Hour

func TestConnAndListener(t *testing.T) {
	for i, network := range []string{"tcp", "unix", "unixpacket"} {
		i, network := i, network
		t.Run(network, func(t *testing.T) {
			if !testableNetwork(network) {