optimize: show outbound name when notify kernel connectivity change

component/outbound/dialer/connectivity_check.go

@@ -517,7 +517,7 @@ func (d *Dialer) HttpCheck(ctx context.Context, u *netutils.URL, ip netip.Addr)
 	if page := path.Base(req.URL.Path); strings.HasPrefix(page, "generate_") {
 		return strconv.Itoa(resp.StatusCode) == strings.TrimPrefix(page, "generate_"), nil
 	}
-	return resp.StatusCode >= 200 && resp.StatusCode < 400, nil
+	return resp.StatusCode >= 200 && resp.StatusCode < 500, nil
 }
 
 func (d *Dialer) DnsCheck(ctx context.Context, dns netip.AddrPort, tcp bool) (ok bool, err error) {

control/connectivity.go

@@ -28,7 +28,7 @@ func (c *ControlPlaneCore) OutboundAliveChangeCallback(outbound uint8) func(aliv
 		c.log.WithFields(logrus.Fields{
 			"alive":    alive,
 			"network":  networkType.StringWithoutDns(),
-			"outbound_id": outbound,
+			"outbound": c.outboundId2Name[outbound],
 		}).Warnf("Outbound alive state changed, notify the kernel program.")
 
 		value := uint32(0)

control/control_plane.go

@@ -42,7 +42,6 @@ type ControlPlane struct {
 
 	// TODO: add mutex?
 	outbounds []*outbound.DialerGroup
-	outboundName2Id map[string]uint8
 
 	SimulatedLpmTries  [][]netip.Prefix
 	SimulatedDomainSet []DomainSet
@@ -266,12 +265,15 @@ func NewControlPlane(
 		return nil, fmt.Errorf("too many outbounds")
 	}
 	outboundName2Id := make(map[string]uint8)
+	outboundId2Name := make(map[uint8]string)
 	for i, o := range outbounds {
 		if _, exist := outboundName2Id[o.Name]; exist {
 			return nil, fmt.Errorf("duplicated outbound name: %v", o.Name)
 		}
 		outboundName2Id[o.Name] = uint8(i)
+		outboundId2Name[uint8(i)] = o.Name
 	}
+	core.outboundId2Name = outboundId2Name
 	builder := NewRoutingMatcherBuilder(outboundName2Id, &bpf)
 	var rules []*config_parser.RoutingRule
 	if rules, err = routing.ApplyRulesOptimizers(routingA.Rules,
@@ -304,7 +306,6 @@ func NewControlPlane(
 		deferFuncs:         nil,
 		listenIp:           "0.0.0.0",
 		outbounds:          outbounds,
-		outboundName2Id:    outboundName2Id,
 		SimulatedLpmTries:  builder.SimulatedLpmTries,
 		SimulatedDomainSet: builder.SimulatedDomainSet,
 		Final:              routingA.Final,

control/control_plane_core.go

@@ -24,6 +24,7 @@ type ControlPlaneCore struct {
 	log             *logrus.Logger
 	deferFuncs      []func() error
 	bpf             *bpfObjects
+	outboundId2Name map[uint8]string
 
 	kernelVersion *internal.Version
 }