Function NewFakeUserspaceEngine

wgengine/userspace.go:288–317

NewFakeUserspaceEngine returns a new userspace engine for testing. The opts may contain the following types: - int or uint16: to set the ListenPort.

(logf logger.Logf, opts ...any)

//
//   - int or uint16: to set the ListenPort.
func NewFakeUserspaceEngine(logf logger.Logf, opts ...any) (Engine, error) {
	conf := Config{
		RespondToPing: true,
	}
	for _, o := range opts {
		switch v := o.(type) {
		case uint16:
			conf.ListenPort = v
		case int:
			if v < 0 || v > math.MaxUint16 {
				return nil, fmt.Errorf("invalid ListenPort: %d", v)
			}
			conf.ListenPort = uint16(v)
		case func(any):
			conf.SetSubsystem = v
		case *controlknobs.Knobs:
			conf.ControlKnobs = v
		case *health.Tracker:
			conf.HealthTracker = v
		case *usermetric.Registry:
			conf.Metrics = v
		case *eventbus.Bus:
			conf.EventBus = v
		default:
			return nil, fmt.Errorf("unknown option type %T", v)
		}
	}
	logf("Starting userspace WireGuard engine (with fake TUN device)")
	return NewUserspaceEngine(logf, conf)
}

// NewUserspaceEngine creates the named tun device and returns a
// Tailscale Engine running on it.