Add signal flag

management/cmd/defaults.go

@@ -1,5 +1,11 @@
 package cmd
 
+import (
+	"fmt"
+
+	"github.com/netbirdio/netbird/management/internals/server"
+)
+
 const (
 	defaultMgmtDataDir   = "/var/lib/netbird/"
 	defaultMgmtConfigDir = "/etc/netbird"
@@ -16,3 +22,5 @@ const (
 
 	defaultSingleAccModeDomain = "netbird.selfhosted"
 )
+
+var defaultWSProxyAddr = fmt.Sprintf("127.0.0.1:%d", server.ManagementLegacyPort)

management/cmd/management.go

@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"io"
 	"io/fs"
+	"net"
 	"net/http"
 	"net/url"
 	"os"
@@ -26,11 +27,11 @@ import (
 	"github.com/netbirdio/netbird/util"
 )
 
-var newServer = func(config *nbconfig.Config, dnsDomain, mgmtSingleAccModeDomain string, mgmtPort int, mgmtMetricsPort int, disableMetrics, disableGeoliteUpdate, userDeleteFromIDPEnabled bool) server.Server {
-	return server.NewServer(config, dnsDomain, mgmtSingleAccModeDomain, mgmtPort, mgmtMetricsPort, disableMetrics, disableGeoliteUpdate, userDeleteFromIDPEnabled)
+var newServer = func(config *nbconfig.Config, dnsDomain, mgmtSingleAccModeDomain string, mgmtPort int, mgmtMetricsPort int, disableMetrics, disableGeoliteUpdate, userDeleteFromIDPEnabled bool, wsProxyAddr string) server.Server {
+	return server.NewServer(config, dnsDomain, mgmtSingleAccModeDomain, mgmtPort, mgmtMetricsPort, disableMetrics, disableGeoliteUpdate, userDeleteFromIDPEnabled, wsProxyAddr)
 }
 
-func SetNewServer(fn func(config *nbconfig.Config, dnsDomain, mgmtSingleAccModeDomain string, mgmtPort int, mgmtMetricsPort int, disableMetrics, disableGeoliteUpdate, userDeleteFromIDPEnabled bool) server.Server) {
+func SetNewServer(fn func(config *nbconfig.Config, dnsDomain, mgmtSingleAccModeDomain string, mgmtPort int, mgmtMetricsPort int, disableMetrics, disableGeoliteUpdate, userDeleteFromIDPEnabled bool, wsProxyAddr string) server.Server) {
 	newServer = fn
 }
 
@@ -82,6 +83,10 @@ var (
 				return fmt.Errorf("failed parsing the provided dns-domain. Valid status: %t, Length: %d", valid, len(dnsDomain))
 			}
 
+			if _, _, err := net.SplitHostPort(wsProxyAddr); err != nil {
+				return fmt.Errorf("invalid ws-proxy-backend-addr format: %w", err)
+			}
+
 			return nil
 		},
 		RunE: func(cmd *cobra.Command, args []string) error {
@@ -108,7 +113,7 @@ var (
 				mgmtSingleAccModeDomain = ""
 			}
 
-			srv := newServer(config, dnsDomain, mgmtSingleAccModeDomain, mgmtPort, mgmtMetricsPort, disableMetrics, disableGeoliteUpdate, userDeleteFromIDPEnabled)
+			srv := newServer(config, dnsDomain, mgmtSingleAccModeDomain, mgmtPort, mgmtMetricsPort, disableMetrics, disableGeoliteUpdate, userDeleteFromIDPEnabled, wsProxyAddr)
 			go func() {
 				if err := srv.Start(cmd.Context()); err != nil {
 					log.Fatalf("Server error: %v", err)

management/cmd/root.go

@@ -31,6 +31,7 @@ var (
 	mgmtSingleAccModeDomain  string
 	certFile                 string
 	certKey                  string
+	wsProxyAddr              string
 
 	rootCmd = &cobra.Command{
 		Use:          "netbird-mgmt",
@@ -57,6 +58,7 @@ func init() {
 	mgmtCmd.Flags().IntVar(&mgmtPort, "port", 80, "server port to listen on (defaults to 443 if TLS is enabled, 80 otherwise")
 	mgmtCmd.Flags().IntVar(&mgmtMetricsPort, "metrics-port", 9090, "metrics endpoint http port. Metrics are accessible under host:metrics-port/metrics")
 	mgmtCmd.Flags().StringVar(&mgmtDataDir, "datadir", defaultMgmtDataDir, "server data directory location")
+	mgmtCmd.Flags().StringVar(&wsProxyAddr, "ws-proxy-backend-addr", defaultWSProxyAddr, "WebSocket proxy backend address in host:port format that the proxy will dial")
 	mgmtCmd.Flags().StringVar(&nbconfig.MgmtConfigPath, "config", defaultMgmtConfig, "Netbird config file location. Config params specified via command line (e.g. datadir) have a precedence over configuration from this file")
 	mgmtCmd.Flags().StringVar(&mgmtLetsencryptDomain, "letsencrypt-domain", "", "a domain to issue Let's Encrypt certificate for. Enables TLS using Let's Encrypt. Will fetch and renew certificate, and run the server with TLS")
 	mgmtCmd.Flags().StringVar(&mgmtSingleAccModeDomain, "single-account-mode-domain", defaultSingleAccModeDomain, "Enables single account mode. This means that all the users will be under the same account grouped by the specified domain. If the installation has more than one account, the property is ineffective. Enabled by default with the default domain "+defaultSingleAccModeDomain)

management/internals/server/server.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"net"
 	"net/http"
-	"net/netip"
 	"strings"
 	"sync"
 	"time"
@@ -58,6 +57,7 @@ type BaseServer struct {
 	mgmtSingleAccModeDomain  string
 	mgmtMetricsPort          int
 	mgmtPort                 int
+	wsProxyAddr              string
 
 	listener    net.Listener
 	certManager *autocert.Manager
@@ -69,7 +69,7 @@ type BaseServer struct {
 }
 
 // NewServer initializes and configures a new Server instance
-func NewServer(config *nbconfig.Config, dnsDomain, mgmtSingleAccModeDomain string, mgmtPort, mgmtMetricsPort int, disableMetrics, disableGeoliteUpdate, userDeleteFromIDPEnabled bool) *BaseServer {
+func NewServer(config *nbconfig.Config, dnsDomain, mgmtSingleAccModeDomain string, mgmtPort, mgmtMetricsPort int, disableMetrics, disableGeoliteUpdate, userDeleteFromIDPEnabled bool, wsProxyAddr string) *BaseServer {
 	return &BaseServer{
 		config:                   config,
 		container:                make(map[string]any),
@@ -80,6 +80,7 @@ func NewServer(config *nbconfig.Config, dnsDomain, mgmtSingleAccModeDomain strin
 		userDeleteFromIDPEnabled: userDeleteFromIDPEnabled,
 		mgmtPort:                 mgmtPort,
 		mgmtMetricsPort:          mgmtMetricsPort,
+		wsProxyAddr:              wsProxyAddr,
 	}
 }
 
@@ -182,6 +183,7 @@ func (s *BaseServer) Start(ctx context.Context) error {
 
 	log.WithContext(ctx).Infof("management server version %s", version.NetbirdVersion())
 	log.WithContext(ctx).Infof("running HTTP server and gRPC server on the same port: %s", s.listener.Addr().String())
+	log.WithContext(ctx).Infof("WebSocket proxy configured to forward to: %s", s.wsProxyAddr)
 	s.serveGRPCWithHTTP(ctx, s.listener, rootHandler, tlsEnabled)
 
 	s.update = version.NewUpdate("nb/management")
@@ -252,7 +254,7 @@ func updateMgmtConfig(ctx context.Context, path string, config *nbconfig.Config)
 }
 
 func (s *BaseServer) handlerFunc(gRPCHandler *grpc.Server, httpHandler http.Handler, meter metric.Meter) http.Handler {
-	wsProxy := wsproxyserver.New(netip.AddrPortFrom(netip.AddrFrom4([4]byte{127, 0, 0, 1}), ManagementLegacyPort), wsproxyserver.WithOTelMeter(meter))
+	wsProxy := wsproxyserver.New(s.wsProxyAddr, wsproxyserver.WithOTelMeter(meter))
 
 	return http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
 		switch {

signal/cmd/run.go

@@ -10,7 +10,6 @@ import (
 	"net/http"
 	// nolint:gosec
 	_ "net/http/pprof"
-	"net/netip"
 	"time"
 
 	"go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc"
@@ -46,6 +45,7 @@ var (
 	defaultSignalSSLDir     string
 	signalCertFile          string
 	signalCertKey           string
+	wsProxyBackendAddr      string
 
 	signalKaep = grpc.KeepaliveEnforcementPolicy(keepalive.EnforcementPolicy{
 		MinTime:             5 * time.Second,
@@ -63,10 +63,10 @@ var (
 		Use:          "run",
 		Short:        "start NetBird Signal Server daemon",
 		SilenceUsage: true,
-		PreRun: func(cmd *cobra.Command, args []string) {
+		PreRunE: func(cmd *cobra.Command, args []string) error {
 			err := util.InitLog(logLevel, logFile)
 			if err != nil {
-				log.Fatalf("failed initializing log %v", err)
+				return fmt.Errorf("failed initializing log: %w", err)
 			}
 
 			flag.Parse()
@@ -79,6 +79,10 @@ var (
 				tlsEnabled = true
 			}
 
+			if _, _, err := net.SplitHostPort(wsProxyBackendAddr); err != nil {
+				return fmt.Errorf("invalid ws-proxy-backend-addr format: %w", err)
+			}
+
 			if !userPort {
 				// different defaults for signalPort
 				if tlsEnabled {
@@ -87,6 +91,8 @@ var (
 					signalPort = 80
 				}
 			}
+
+			return nil
 		},
 		RunE: func(cmd *cobra.Command, args []string) error {
 			flag.Parse()
@@ -160,6 +166,7 @@ var (
 			}
 
 			log.Infof("signal server version %s", version.NetbirdVersion())
+			log.Infof("WebSocket proxy configured to forward to: %s", wsProxyBackendAddr)
 			log.Infof("started Signal Service")
 
 			SetupCloseHandler()
@@ -254,7 +261,7 @@ func startServerWithCertManager(certManager *autocert.Manager, grpcRootHandler h
 }
 
 func grpcHandlerFunc(grpcServer *grpc.Server, meter metric.Meter) http.Handler {
-	wsProxy := wsproxyserver.New(netip.AddrPortFrom(netip.AddrFrom4([4]byte{127, 0, 0, 1}), legacyGRPCPort), wsproxyserver.WithOTelMeter(meter))
+	wsProxy := wsproxyserver.New(wsProxyBackendAddr, wsproxyserver.WithOTelMeter(meter))
 
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		switch {
@@ -328,5 +335,6 @@ func init() {
 	runCmd.Flags().StringVar(&signalLetsencryptDomain, "letsencrypt-domain", "", "a domain to issue Let's Encrypt certificate for. Enables TLS using Let's Encrypt. Will fetch and renew certificate, and run the server with TLS")
 	runCmd.Flags().StringVar(&signalCertFile, "cert-file", "", "Location of your SSL certificate. Can be used when you have an existing certificate and don't want a new certificate be generated automatically. If letsencrypt-domain is specified this property has no effect")
 	runCmd.Flags().StringVar(&signalCertKey, "cert-key", "", "Location of your SSL certificate private key. Can be used when you have an existing certificate and don't want a new certificate be generated automatically. If letsencrypt-domain is specified this property has no effect")
+	runCmd.Flags().StringVar(&wsProxyBackendAddr, "ws-proxy-backend-addr", fmt.Sprintf("127.0.0.1:%d", legacyGRPCPort), "WebSocket proxy backend address in host:port format that the proxy will dial")
 	setFlagsFromEnvVars(runCmd)
 }

util/wsproxy/server/proxy.go

@@ -6,7 +6,6 @@ import (
 	"io"
 	"net"
 	"net/http"
-	"net/netip"
 	"sync"
 	"time"
 
@@ -23,7 +22,7 @@ const (
 
 // Config contains the configuration for the WebSocket proxy.
 type Config struct {
-	LocalGRPCAddr   netip.AddrPort
+	LocalGRPCAddr   string
 	Path            string
 	MetricsRecorder MetricsRecorder
 }
@@ -35,7 +34,7 @@ type Proxy struct {
 }
 
 // New creates a new WebSocket proxy instance with optional configuration
-func New(localGRPCAddr netip.AddrPort, opts ...Option) *Proxy {
+func New(localGRPCAddr string, opts ...Option) *Proxy {
 	config := Config{
 		LocalGRPCAddr:   localGRPCAddr,
 		Path:            wsproxy.ProxyPath,
@@ -81,7 +80,7 @@ func (p *Proxy) handleWebSocket(w http.ResponseWriter, r *http.Request) {
 	}()
 
 	log.Debugf("WebSocket proxy attempting to connect to local gRPC at %s", p.config.LocalGRPCAddr)
-	tcpConn, err := net.DialTimeout("tcp", p.config.LocalGRPCAddr.String(), dialTimeout)
+	tcpConn, err := net.DialTimeout("tcp", p.config.LocalGRPCAddr, dialTimeout)
 	if err != nil {
 		p.metrics.RecordError(ctx, "tcp_dial_failed")
 		log.Warnf("Failed to connect to local gRPC server at %s: %v", p.config.LocalGRPCAddr, err)