Swap local and dns route handler priority

client/cmd/debug.go

@@ -314,9 +314,8 @@ func getStatusOutput(cmd *cobra.Command, anon bool) string {
 			profName = activeProf.Name
 		}
 
-		statusOutputString = nbstatus.ParseToFullDetailSummary(
-			nbstatus.ConvertToStatusOutputOverview(statusResp, anon, "", nil, nil, nil, "", profName),
-		)
+		overview := nbstatus.ConvertToStatusOutputOverview(statusResp, anon, "", nil, nil, nil, "", profName)
+		statusOutputString = overview.FullDetailSummary()
 	}
 	return statusOutputString
 }

client/cmd/status.go

@@ -103,13 +103,13 @@ func statusFunc(cmd *cobra.Command, args []string) error {
 	var statusOutputString string
 	switch {
 	case detailFlag:
-		statusOutputString = nbstatus.ParseToFullDetailSummary(outputInformationHolder)
+		statusOutputString = outputInformationHolder.FullDetailSummary()
 	case jsonFlag:
-		statusOutputString, err = nbstatus.ParseToJSON(outputInformationHolder)
+		statusOutputString, err = outputInformationHolder.JSON()
 	case yamlFlag:
-		statusOutputString, err = nbstatus.ParseToYAML(outputInformationHolder)
+		statusOutputString, err = outputInformationHolder.YAML()
 	default:
-		statusOutputString = nbstatus.ParseGeneralSummary(outputInformationHolder, false, false, false, false)
+		statusOutputString = outputInformationHolder.GeneralSummary(false, false, false, false)
 	}
 
 	if err != nil {

client/embed/embed.go

@@ -20,6 +20,7 @@ import (
 	"github.com/netbirdio/netbird/client/internal/profilemanager"
 	sshcommon "github.com/netbirdio/netbird/client/ssh"
 	"github.com/netbirdio/netbird/client/system"
+	mgmProto "github.com/netbirdio/netbird/shared/management/proto"
 )
 
 var (
@@ -38,6 +39,7 @@ type Client struct {
 	setupKey   string
 	jwtToken   string
 	connect    *internal.ConnectClient
+	recorder   *peer.Status
 }
 
 // Options configures a new Client.
@@ -161,11 +163,17 @@ func New(opts Options) (*Client, error) {
 func (c *Client) Start(startCtx context.Context) error {
 	c.mu.Lock()
 	defer c.mu.Unlock()
-	if c.cancel != nil {
+	if c.connect != nil {
 		return ErrClientAlreadyStarted
 	}
 
-	ctx := internal.CtxInitState(context.Background())
+	ctx, cancel := context.WithCancel(internal.CtxInitState(context.Background()))
+	defer func() {
+		if c.connect == nil {
+			cancel()
+		}
+	}()
+
 	// nolint:staticcheck
 	ctx = context.WithValue(ctx, system.DeviceNameCtxKey, c.deviceName)
 	if err := internal.Login(ctx, c.config, c.setupKey, c.jwtToken); err != nil {
@@ -173,7 +181,9 @@ func (c *Client) Start(startCtx context.Context) error {
 	}
 
 	recorder := peer.NewRecorder(c.config.ManagementURL.String())
+	c.recorder = recorder
 	client := internal.NewConnectClient(ctx, c.config, recorder, false)
+	client.SetSyncResponsePersistence(true)
 
 	// either startup error (permanent backoff err) or nil err (successful engine up)
 	// TODO: make after-startup backoff err available
@@ -197,6 +207,7 @@ func (c *Client) Start(startCtx context.Context) error {
 	}
 
 	c.connect = client
+	c.cancel = cancel
 
 	return nil
 }
@@ -211,17 +222,23 @@ func (c *Client) Stop(ctx context.Context) error {
 		return ErrClientNotStarted
 	}
 
+	if c.cancel != nil {
+		c.cancel()
+		c.cancel = nil
+	}
+
 	done := make(chan error, 1)
+	connect := c.connect
 	go func() {
-		done <- c.connect.Stop()
+		done <- connect.Stop()
 	}()
 
 	select {
 	case <-ctx.Done():
-		c.cancel = nil
+		c.connect = nil
 		return ctx.Err()
 	case err := <-done:
-		c.cancel = nil
+		c.connect = nil
 		if err != nil {
 			return fmt.Errorf("stop: %w", err)
 		}
@@ -315,6 +332,62 @@ func (c *Client) NewHTTPClient() *http.Client {
 	}
 }
 
+// Status returns the current status of the client.
+func (c *Client) Status() (peer.FullStatus, error) {
+	c.mu.Lock()
+	recorder := c.recorder
+	connect := c.connect
+	c.mu.Unlock()
+
+	if recorder == nil {
+		return peer.FullStatus{}, errors.New("client not started")
+	}
+
+	if connect != nil {
+		engine := connect.Engine()
+		if engine != nil {
+			_ = engine.RunHealthProbes(false)
+		}
+	}
+
+	return recorder.GetFullStatus(), nil
+}
+
+// GetLatestSyncResponse returns the latest sync response from the management server.
+func (c *Client) GetLatestSyncResponse() (*mgmProto.SyncResponse, error) {
+	engine, err := c.getEngine()
+	if err != nil {
+		return nil, err
+	}
+
+	syncResp, err := engine.GetLatestSyncResponse()
+	if err != nil {
+		return nil, fmt.Errorf("get sync response: %w", err)
+	}
+
+	return syncResp, nil
+}
+
+// SetLogLevel sets the logging level for the client and its components.
+func (c *Client) SetLogLevel(levelStr string) error {
+	level, err := logrus.ParseLevel(levelStr)
+	if err != nil {
+		return fmt.Errorf("parse log level: %w", err)
+	}
+
+	logrus.SetLevel(level)
+
+	c.mu.Lock()
+	connect := c.connect
+	c.mu.Unlock()
+
+	if connect != nil {
+		connect.SetLogLevel(level)
+	}
+
+	return nil
+}
+
 // VerifySSHHostKey verifies an SSH host key against stored peer keys.
 // Returns nil if the key matches, ErrPeerNotFound if peer is not in network,
 // ErrNoStoredKey if peer has no stored key, or an error for verification failures.

client/internal/connect.go

@@ -420,6 +420,19 @@ func (c *ConnectClient) GetLatestSyncResponse() (*mgmProto.SyncResponse, error)
 	return syncResponse, nil
 }
 
+// SetLogLevel sets the log level for the firewall manager if the engine is running.
+func (c *ConnectClient) SetLogLevel(level log.Level) {
+	engine := c.Engine()
+	if engine == nil {
+		return
+	}
+
+	fwManager := engine.GetFirewallManager()
+	if fwManager != nil {
+		fwManager.SetLogLevel(level)
+	}
+}
+
 // Status returns the current client status
 func (c *ConnectClient) Status() StatusType {
 	if c == nil {

client/internal/dns/handler_chain.go

@@ -16,8 +16,8 @@ import (
 
 const (
 	PriorityMgmtCache = 150
-	PriorityLocal     = 100
-	PriorityDNSRoute  = 75
+	PriorityDNSRoute  = 100
+	PriorityLocal     = 75
 	PriorityUpstream  = 50
 	PriorityDefault   = 1
 	PriorityFallback  = -100

client/internal/dns/server.go

@@ -631,9 +631,7 @@ func (s *DefaultServer) registerFallback(config HostDNSConfig) {
 
 	handler, err := newUpstreamResolver(
 		s.ctx,
-		s.wgInterface.Name(),
-		s.wgInterface.Address().IP,
-		s.wgInterface.Address().Network,
+		s.wgInterface,
 		s.statusRecorder,
 		s.hostsDNSHolder,
 		nbdns.RootZone,
@@ -743,9 +741,7 @@ func (s *DefaultServer) createHandlersForDomainGroup(domainGroup nsGroupsByDomai
 		log.Debugf("creating handler for domain=%s with priority=%d", domainGroup.domain, priority)
 		handler, err := newUpstreamResolver(
 			s.ctx,
-			s.wgInterface.Name(),
-			s.wgInterface.Address().IP,
-			s.wgInterface.Address().Network,
+			s.wgInterface,
 			s.statusRecorder,
 			s.hostsDNSHolder,
 			domainGroup.domain,
@@ -926,9 +922,7 @@ func (s *DefaultServer) addHostRootZone() {
 
 	handler, err := newUpstreamResolver(
 		s.ctx,
-		s.wgInterface.Name(),
-		s.wgInterface.Address().IP,
-		s.wgInterface.Address().Network,
+		s.wgInterface,
 		s.statusRecorder,
 		s.hostsDNSHolder,
 		nbdns.RootZone,

client/internal/dns/server_test.go

@@ -15,6 +15,7 @@ import (
 	log "github.com/sirupsen/logrus"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/mock"
+	"golang.zx2c4.com/wireguard/tun/netstack"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 
 	"github.com/netbirdio/netbird/client/firewall/uspfilter"
@@ -81,6 +82,10 @@ func (w *mocWGIface) GetStats(_ string) (configurer.WGStats, error) {
 	return configurer.WGStats{}, nil
 }
 
+func (w *mocWGIface) GetNet() *netstack.Net {
+	return nil
+}
+
 var zoneRecords = []nbdns.SimpleRecord{
 	{
 		Name:  "peera.netbird.cloud",

client/internal/dns/upstream.go

@@ -18,6 +18,7 @@ import (
 	"github.com/hashicorp/go-multierror"
 	"github.com/miekg/dns"
 	log "github.com/sirupsen/logrus"
+	"golang.zx2c4.com/wireguard/tun/netstack"
 
 	"github.com/netbirdio/netbird/client/iface"
 	"github.com/netbirdio/netbird/client/internal/dns/resutil"
@@ -418,6 +419,56 @@ func ExchangeWithFallback(ctx context.Context, client *dns.Client, r *dns.Msg, u
 	return rm, t, nil
 }
 
+// ExchangeWithNetstack performs a DNS exchange using netstack for dialing.
+// This is needed when netstack is enabled to reach peer IPs through the tunnel.
+func ExchangeWithNetstack(ctx context.Context, nsNet *netstack.Net, r *dns.Msg, upstream string) (*dns.Msg, error) {
+	reply, err := netstackExchange(ctx, nsNet, r, upstream, "udp")
+	if err != nil {
+		return nil, err
+	}
+
+	// If response is truncated, retry with TCP
+	if reply != nil && reply.MsgHdr.Truncated {
+		log.Tracef("udp response for domain=%s type=%v class=%v is truncated, trying TCP",
+			r.Question[0].Name, r.Question[0].Qtype, r.Question[0].Qclass)
+		return netstackExchange(ctx, nsNet, r, upstream, "tcp")
+	}
+
+	return reply, nil
+}
+
+func netstackExchange(ctx context.Context, nsNet *netstack.Net, r *dns.Msg, upstream, network string) (*dns.Msg, error) {
+	conn, err := nsNet.DialContext(ctx, network, upstream)
+	if err != nil {
+		return nil, fmt.Errorf("with %s: %w", network, err)
+	}
+	defer func() {
+		if err := conn.Close(); err != nil {
+			log.Debugf("failed to close DNS connection: %v", err)
+		}
+	}()
+
+	if deadline, ok := ctx.Deadline(); ok {
+		if err := conn.SetDeadline(deadline); err != nil {
+			return nil, fmt.Errorf("set deadline: %w", err)
+		}
+	}
+
+	dnsConn := &dns.Conn{Conn: conn}
+
+	if err := dnsConn.WriteMsg(r); err != nil {
+		return nil, fmt.Errorf("write %s message: %w", network, err)
+	}
+
+	reply, err := dnsConn.ReadMsg()
+	if err != nil {
+		return nil, fmt.Errorf("read %s message: %w", network, err)
+	}
+
+	return reply, nil
+}
+
+
 // FormatPeerStatus formats peer connection status information for debugging DNS timeouts
 func FormatPeerStatus(peerState *peer.State) string {
 	isConnected := peerState.ConnStatus == peer.StatusConnected

client/internal/dns/upstream_android.go

@@ -23,9 +23,7 @@ type upstreamResolver struct {
 // first time, and we need to wait for a while to start to use again the proper DNS resolver.
 func newUpstreamResolver(
 	ctx context.Context,
-	_ string,
-	_ netip.Addr,
-	_ netip.Prefix,
+	_ WGIface,
 	statusRecorder *peer.Status,
 	hostsDNSHolder *hostsDNSHolder,
 	domain string,

client/internal/dns/upstream_general.go

@@ -5,22 +5,23 @@ package dns
 import (
 	"context"
 	"net/netip"
+	"runtime"
 	"time"
 
 	"github.com/miekg/dns"
+	"golang.zx2c4.com/wireguard/tun/netstack"
 
 	"github.com/netbirdio/netbird/client/internal/peer"
 )
 
 type upstreamResolver struct {
 	*upstreamResolverBase
+	nsNet *netstack.Net
 }
 
 func newUpstreamResolver(
 	ctx context.Context,
-	_ string,
-	_ netip.Addr,
-	_ netip.Prefix,
+	wgIface WGIface,
 	statusRecorder *peer.Status,
 	_ *hostsDNSHolder,
 	domain string,
@@ -28,12 +29,23 @@ func newUpstreamResolver(
 	upstreamResolverBase := newUpstreamResolverBase(ctx, statusRecorder, domain)
 	nonIOS := &upstreamResolver{
 		upstreamResolverBase: upstreamResolverBase,
+		nsNet:                wgIface.GetNet(),
 	}
 	upstreamResolverBase.upstreamClient = nonIOS
 	return nonIOS, nil
 }
 
 func (u *upstreamResolver) exchange(ctx context.Context, upstream string, r *dns.Msg) (rm *dns.Msg, t time.Duration, err error) {
+	// TODO: Check if upstream DNS server is routed through a peer before using netstack.
+	// Similar to iOS logic, we should determine if the DNS server is reachable directly
+	// or needs to go through the tunnel, and only use netstack when necessary.
+	// For now, only use netstack on JS platform where direct access is not possible.
+	if u.nsNet != nil && runtime.GOOS == "js" {
+		start := time.Now()
+		reply, err := ExchangeWithNetstack(ctx, u.nsNet, r, upstream)
+		return reply, time.Since(start), err
+	}
+
 	client := &dns.Client{
 		Timeout: ClientTimeout,
 	}

client/internal/dns/upstream_ios.go

@@ -26,9 +26,7 @@ type upstreamResolverIOS struct {
 
 func newUpstreamResolver(
 	ctx context.Context,
-	interfaceName string,
-	ip netip.Addr,
-	net netip.Prefix,
+	wgIface WGIface,
 	statusRecorder *peer.Status,
 	_ *hostsDNSHolder,
 	domain string,
@@ -37,9 +35,9 @@ func newUpstreamResolver(
 
 	ios := &upstreamResolverIOS{
 		upstreamResolverBase: upstreamResolverBase,
-		lIP:                  ip,
-		lNet:                 net,
-		interfaceName:        interfaceName,
+		lIP:                  wgIface.Address().IP,
+		lNet:                 wgIface.Address().Network,
+		interfaceName:        wgIface.Name(),
 	}
 	ios.upstreamClient = ios
 

client/internal/dns/upstream_test.go

@@ -2,13 +2,17 @@ package dns
 
 import (
 	"context"
+	"net"
 	"net/netip"
 	"strings"
 	"testing"
 	"time"
 
 	"github.com/miekg/dns"
+	"golang.zx2c4.com/wireguard/tun/netstack"
 
+	"github.com/netbirdio/netbird/client/iface/device"
+	"github.com/netbirdio/netbird/client/iface/wgaddr"
 	"github.com/netbirdio/netbird/client/internal/dns/test"
 )
 
@@ -58,7 +62,7 @@ func TestUpstreamResolver_ServeDNS(t *testing.T) {
 	for _, testCase := range testCases {
 		t.Run(testCase.name, func(t *testing.T) {
 			ctx, cancel := context.WithCancel(context.TODO())
-			resolver, _ := newUpstreamResolver(ctx, "", netip.Addr{}, netip.Prefix{}, nil, nil, ".")
+			resolver, _ := newUpstreamResolver(ctx, &mockNetstackProvider{}, nil, nil, ".")
 			// Convert test servers to netip.AddrPort
 			var servers []netip.AddrPort
 			for _, server := range testCase.InputServers {
@@ -112,6 +116,19 @@ func TestUpstreamResolver_ServeDNS(t *testing.T) {
 	}
 }
 
+type mockNetstackProvider struct{}
+
+func (m *mockNetstackProvider) Name() string                      { return "mock" }
+func (m *mockNetstackProvider) Address() wgaddr.Address           { return wgaddr.Address{} }
+func (m *mockNetstackProvider) ToInterface() *net.Interface       { return nil }
+func (m *mockNetstackProvider) IsUserspaceBind() bool             { return false }
+func (m *mockNetstackProvider) GetFilter() device.PacketFilter    { return nil }
+func (m *mockNetstackProvider) GetDevice() *device.FilteredDevice { return nil }
+func (m *mockNetstackProvider) GetNet() *netstack.Net             { return nil }
+func (m *mockNetstackProvider) GetInterfaceGUIDString() (string, error) {
+	return "", nil
+}
+
 type mockUpstreamResolver struct {
 	r   *dns.Msg
 	rtt time.Duration

client/internal/dns/wgiface.go

@@ -5,6 +5,8 @@ package dns
 import (
 	"net"
 
+	"golang.zx2c4.com/wireguard/tun/netstack"
+
 	"github.com/netbirdio/netbird/client/iface/device"
 	"github.com/netbirdio/netbird/client/iface/wgaddr"
 )
@@ -17,4 +19,5 @@ type WGIface interface {
 	IsUserspaceBind() bool
 	GetFilter() device.PacketFilter
 	GetDevice() *device.FilteredDevice
+	GetNet() *netstack.Net
 }

client/internal/dns/wgiface_windows.go

@@ -1,6 +1,8 @@
 package dns
 
 import (
+	"golang.zx2c4.com/wireguard/tun/netstack"
+
 	"github.com/netbirdio/netbird/client/iface/device"
 	"github.com/netbirdio/netbird/client/iface/wgaddr"
 )
@@ -12,5 +14,6 @@ type WGIface interface {
 	IsUserspaceBind() bool
 	GetFilter() device.PacketFilter
 	GetDevice() *device.FilteredDevice
+	GetNet() *netstack.Net
 	GetInterfaceGUIDString() (string, error)
 }

client/internal/engine.go

@@ -1748,22 +1748,26 @@ func (e *Engine) RunHealthProbes(waitForResult bool) bool {
 	}
 
 	e.syncMsgMux.Unlock()
-	var results []relay.ProbeResult
-	if waitForResult {
-		results = e.probeStunTurn.ProbeAllWaitResult(e.ctx, stuns, turns)
-	} else {
-		results = e.probeStunTurn.ProbeAll(e.ctx, stuns, turns)
-	}
-	e.statusRecorder.UpdateRelayStates(results)
 
+	// Skip STUN/TURN probing for JS/WASM as it's not available
 	relayHealthy := true
-	for _, res := range results {
-		if res.Err != nil {
-			relayHealthy = false
-			break
+	if runtime.GOOS != "js" {
+		var results []relay.ProbeResult
+		if waitForResult {
+			results = e.probeStunTurn.ProbeAllWaitResult(e.ctx, stuns, turns)
+		} else {
+			results = e.probeStunTurn.ProbeAll(e.ctx, stuns, turns)
 		}
+		e.statusRecorder.UpdateRelayStates(results)
+
+		for _, res := range results {
+			if res.Err != nil {
+				relayHealthy = false
+				break
+			}
+		}
+		log.Debugf("relay health check: healthy=%t", relayHealthy)
 	}
-	log.Debugf("relay health check: healthy=%t", relayHealthy)
 
 	allHealthy := signalHealthy && managementHealthy && relayHealthy
 	log.Debugf("all health checks completed: healthy=%t", allHealthy)

client/internal/peer/status.go

@@ -14,6 +14,7 @@ import (
 	"golang.org/x/exp/maps"
 	"google.golang.org/grpc/codes"
 	gstatus "google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/durationpb"
 	"google.golang.org/protobuf/types/known/timestamppb"
 
 	firewall "github.com/netbirdio/netbird/client/firewall/manager"
@@ -158,6 +159,7 @@ type FullStatus struct {
 	NSGroupStates         []NSGroupState
 	NumOfForwardingRules  int
 	LazyConnectionEnabled bool
+	Events                []*proto.SystemEvent
 }
 
 type StatusChangeSubscription struct {
@@ -981,6 +983,7 @@ func (d *Status) GetFullStatus() FullStatus {
 	}
 
 	fullStatus.Peers = append(fullStatus.Peers, d.offlinePeers...)
+	fullStatus.Events = d.GetEventHistory()
 	return fullStatus
 }
 
@@ -1181,3 +1184,97 @@ type EventSubscription struct {
 func (s *EventSubscription) Events() <-chan *proto.SystemEvent {
 	return s.events
 }
+
+// ToProto converts FullStatus to proto.FullStatus.
+func (fs FullStatus) ToProto() *proto.FullStatus {
+	pbFullStatus := proto.FullStatus{
+		ManagementState: &proto.ManagementState{},
+		SignalState:     &proto.SignalState{},
+		LocalPeerState:  &proto.LocalPeerState{},
+		Peers:           []*proto.PeerState{},
+	}
+
+	pbFullStatus.ManagementState.URL = fs.ManagementState.URL
+	pbFullStatus.ManagementState.Connected = fs.ManagementState.Connected
+	if err := fs.ManagementState.Error; err != nil {
+		pbFullStatus.ManagementState.Error = err.Error()
+	}
+
+	pbFullStatus.SignalState.URL = fs.SignalState.URL
+	pbFullStatus.SignalState.Connected = fs.SignalState.Connected
+	if err := fs.SignalState.Error; err != nil {
+		pbFullStatus.SignalState.Error = err.Error()
+	}
+
+	pbFullStatus.LocalPeerState.IP = fs.LocalPeerState.IP
+	pbFullStatus.LocalPeerState.PubKey = fs.LocalPeerState.PubKey
+	pbFullStatus.LocalPeerState.KernelInterface = fs.LocalPeerState.KernelInterface
+	pbFullStatus.LocalPeerState.Fqdn = fs.LocalPeerState.FQDN
+	pbFullStatus.LocalPeerState.RosenpassPermissive = fs.RosenpassState.Permissive
+	pbFullStatus.LocalPeerState.RosenpassEnabled = fs.RosenpassState.Enabled
+	pbFullStatus.NumberOfForwardingRules = int32(fs.NumOfForwardingRules)
+	pbFullStatus.LazyConnectionEnabled = fs.LazyConnectionEnabled
+
+	pbFullStatus.LocalPeerState.Networks = maps.Keys(fs.LocalPeerState.Routes)
+
+	for _, peerState := range fs.Peers {
+		networks := maps.Keys(peerState.GetRoutes())
+
+		pbPeerState := &proto.PeerState{
+			IP:                         peerState.IP,
+			PubKey:                     peerState.PubKey,
+			ConnStatus:                 peerState.ConnStatus.String(),
+			ConnStatusUpdate:           timestamppb.New(peerState.ConnStatusUpdate),
+			Relayed:                    peerState.Relayed,
+			LocalIceCandidateType:      peerState.LocalIceCandidateType,
+			RemoteIceCandidateType:     peerState.RemoteIceCandidateType,
+			LocalIceCandidateEndpoint:  peerState.LocalIceCandidateEndpoint,
+			RemoteIceCandidateEndpoint: peerState.RemoteIceCandidateEndpoint,
+			RelayAddress:               peerState.RelayServerAddress,
+			Fqdn:                       peerState.FQDN,
+			LastWireguardHandshake:     timestamppb.New(peerState.LastWireguardHandshake),
+			BytesRx:                    peerState.BytesRx,
+			BytesTx:                    peerState.BytesTx,
+			RosenpassEnabled:           peerState.RosenpassEnabled,
+			Networks:                   networks,
+			Latency:                    durationpb.New(peerState.Latency),
+			SshHostKey:                 peerState.SSHHostKey,
+		}
+		pbFullStatus.Peers = append(pbFullStatus.Peers, pbPeerState)
+	}
+
+	for _, relayState := range fs.Relays {
+		pbRelayState := &proto.RelayState{
+			URI:       relayState.URI,
+			Available: relayState.Err == nil,
+		}
+		if err := relayState.Err; err != nil {
+			pbRelayState.Error = err.Error()
+		}
+		pbFullStatus.Relays = append(pbFullStatus.Relays, pbRelayState)
+	}
+
+	for _, dnsState := range fs.NSGroupStates {
+		var err string
+		if dnsState.Error != nil {
+			err = dnsState.Error.Error()
+		}
+
+		var servers []string
+		for _, server := range dnsState.Servers {
+			servers = append(servers, server.String())
+		}
+
+		pbDnsState := &proto.NSGroupState{
+			Servers: servers,
+			Domains: dnsState.Domains,
+			Enabled: dnsState.Enabled,
+			Error:   err,
+		}
+		pbFullStatus.DnsServers = append(pbFullStatus.DnsServers, pbDnsState)
+	}
+
+	pbFullStatus.Events = fs.Events
+
+	return &pbFullStatus
+}

client/internal/routemanager/dnsinterceptor/handler.go

@@ -17,13 +17,13 @@ import (
 
 	nberrors "github.com/netbirdio/netbird/client/errors"
 	firewall "github.com/netbirdio/netbird/client/firewall/manager"
-	"github.com/netbirdio/netbird/client/iface/wgaddr"
 	nbdns "github.com/netbirdio/netbird/client/internal/dns"
 	"github.com/netbirdio/netbird/client/internal/dns/resutil"
 	"github.com/netbirdio/netbird/client/internal/peer"
 	"github.com/netbirdio/netbird/client/internal/peerstore"
 	"github.com/netbirdio/netbird/client/internal/routemanager/common"
 	"github.com/netbirdio/netbird/client/internal/routemanager/fakeip"
+	iface "github.com/netbirdio/netbird/client/internal/routemanager/iface"
 	"github.com/netbirdio/netbird/client/internal/routemanager/refcounter"
 	"github.com/netbirdio/netbird/route"
 	"github.com/netbirdio/netbird/shared/management/domain"
@@ -38,11 +38,6 @@ type internalDNATer interface {
 	AddInternalDNATMapping(netip.Addr, netip.Addr) error
 }
 
-type wgInterface interface {
-	Name() string
-	Address() wgaddr.Address
-}
-
 type DnsInterceptor struct {
 	mu                   sync.RWMutex
 	route                *route.Route
@@ -52,7 +47,7 @@ type DnsInterceptor struct {
 	dnsServer            nbdns.Server
 	currentPeerKey       string
 	interceptedDomains   domainMap
-	wgInterface          wgInterface
+	wgInterface          iface.WGIface
 	peerStore            *peerstore.Store
 	firewall             firewall.Manager
 	fakeIPManager        *fakeip.Manager
@@ -250,12 +245,6 @@ func (d *DnsInterceptor) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
 		return
 	}
 
-	client, err := nbdns.GetClientPrivate(d.wgInterface.Address().IP, d.wgInterface.Name(), dnsTimeout)
-	if err != nil {
-		d.writeDNSError(w, r, logger, fmt.Sprintf("create DNS client: %v", err))
-		return
-	}
-
 	if r.Extra == nil {
 		r.MsgHdr.AuthenticatedData = true
 	}
@@ -264,20 +253,8 @@ func (d *DnsInterceptor) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
 	ctx, cancel := context.WithTimeout(context.Background(), dnsTimeout)
 	defer cancel()
 
-	startTime := time.Now()
-	reply, _, err := nbdns.ExchangeWithFallback(ctx, client, r, upstream)
-	if err != nil {
-		if errors.Is(err, context.DeadlineExceeded) {
-			elapsed := time.Since(startTime)
-			peerInfo := d.debugPeerTimeout(upstreamIP, peerKey)
-			logger.Errorf("peer DNS timeout after %v (timeout=%v) for domain=%s to peer %s (%s)%s - error: %v",
-				elapsed.Truncate(time.Millisecond), dnsTimeout, r.Question[0].Name, upstreamIP.String(), peerKey, peerInfo, err)
-		} else {
-			logger.Errorf("failed to exchange DNS request with %s (%s) for domain=%s: %v", upstreamIP.String(), peerKey, r.Question[0].Name, err)
-		}
-		if err := w.WriteMsg(&dns.Msg{MsgHdr: dns.MsgHdr{Rcode: dns.RcodeServerFailure, Id: r.Id}}); err != nil {
-			logger.Errorf("failed writing DNS response: %v", err)
-		}
+	reply := d.queryUpstreamDNS(ctx, w, r, upstream, upstreamIP, peerKey, logger)
+	if reply == nil {
 		return
 	}
 
@@ -586,6 +563,44 @@ func determinePrefixChanges(oldPrefixes, newPrefixes []netip.Prefix) (toAdd, toR
 	return
 }
 
+// queryUpstreamDNS queries the upstream DNS server using netstack if available, otherwise uses regular client.
+// Returns the DNS reply on success, or nil on error (error responses are written internally).
+func (d *DnsInterceptor) queryUpstreamDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg, upstream string, upstreamIP netip.Addr, peerKey string, logger *log.Entry) *dns.Msg {
+	startTime := time.Now()
+
+	nsNet := d.wgInterface.GetNet()
+	var reply *dns.Msg
+	var err error
+
+	if nsNet != nil {
+		reply, err = nbdns.ExchangeWithNetstack(ctx, nsNet, r, upstream)
+	} else {
+		client, clientErr := nbdns.GetClientPrivate(d.wgInterface.Address().IP, d.wgInterface.Name(), dnsTimeout)
+		if clientErr != nil {
+			d.writeDNSError(w, r, logger, fmt.Sprintf("create DNS client: %v", clientErr))
+			return nil
+		}
+		reply, _, err = nbdns.ExchangeWithFallback(ctx, client, r, upstream)
+	}
+
+	if err == nil {
+		return reply
+	}
+
+	if errors.Is(err, context.DeadlineExceeded) {
+		elapsed := time.Since(startTime)
+		peerInfo := d.debugPeerTimeout(upstreamIP, peerKey)
+		logger.Errorf("peer DNS timeout after %v (timeout=%v) for domain=%s to peer %s (%s)%s - error: %v",
+			elapsed.Truncate(time.Millisecond), dnsTimeout, r.Question[0].Name, upstreamIP.String(), peerKey, peerInfo, err)
+	} else {
+		logger.Errorf("failed to exchange DNS request with %s (%s) for domain=%s: %v", upstreamIP.String(), peerKey, r.Question[0].Name, err)
+	}
+	if err := w.WriteMsg(&dns.Msg{MsgHdr: dns.MsgHdr{Rcode: dns.RcodeServerFailure, Id: r.Id}}); err != nil {
+		logger.Errorf("failed writing DNS response: %v", err)
+	}
+	return nil
+}
+
 func (d *DnsInterceptor) debugPeerTimeout(peerIP netip.Addr, peerKey string) string {
 	if d.statusRecorder == nil {
 		return ""

client/internal/routemanager/iface/iface_common.go

@@ -4,6 +4,8 @@ import (
 	"net"
 	"net/netip"
 
+	"golang.zx2c4.com/wireguard/tun/netstack"
+
 	"github.com/netbirdio/netbird/client/iface/device"
 	"github.com/netbirdio/netbird/client/iface/wgaddr"
 )
@@ -18,4 +20,5 @@ type wgIfaceBase interface {
 	IsUserspaceBind() bool
 	GetFilter() device.PacketFilter
 	GetDevice() *device.FilteredDevice
+	GetNet() *netstack.Net
 }

client/server/debug.go

@@ -173,20 +173,9 @@ func (s *Server) SetLogLevel(_ context.Context, req *proto.SetLogLevelRequest) (
 
 	log.SetLevel(level)
 
-	if s.connectClient == nil {
-		return nil, fmt.Errorf("connect client not initialized")
+	if s.connectClient != nil {
+		s.connectClient.SetLogLevel(level)
 	}
-	engine := s.connectClient.Engine()
-	if engine == nil {
-		return nil, fmt.Errorf("engine not initialized")
-	}
-
-	fwManager := engine.GetFirewallManager()
-	if fwManager == nil {
-		return nil, fmt.Errorf("firewall manager not initialized")
-	}
-
-	fwManager.SetLogLevel(level)
 
 	log.Infof("Log level set to %s", level.String())
 

client/server/event.go

@@ -1,8 +1,6 @@
 package server
 
 import (
-	"context"
-
 	log "github.com/sirupsen/logrus"
 
 	"github.com/netbirdio/netbird/client/proto"
@@ -29,8 +27,3 @@ func (s *Server) SubscribeEvents(req *proto.SubscribeRequest, stream proto.Daemo
 		}
 	}
 }
-
-func (s *Server) GetEvents(context.Context, *proto.GetEventsRequest) (*proto.GetEventsResponse, error) {
-	events := s.statusRecorder.GetEventHistory()
-	return &proto.GetEventsResponse{Events: events}, nil
-}

client/server/server.go

@@ -13,15 +13,12 @@ import (
 	"time"
 
 	"github.com/cenkalti/backoff/v4"
-	"golang.org/x/exp/maps"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
-	"google.golang.org/protobuf/types/known/durationpb"
 
 	log "github.com/sirupsen/logrus"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/metadata"
 	gstatus "google.golang.org/grpc/status"
-	"google.golang.org/protobuf/types/known/timestamppb"
 
 	"github.com/netbirdio/netbird/client/internal/auth"
 	"github.com/netbirdio/netbird/client/internal/profilemanager"
@@ -1067,11 +1064,9 @@ func (s *Server) Status(
 	if msg.GetFullPeerStatus {
 		s.runProbes(msg.ShouldRunProbes)
 		fullStatus := s.statusRecorder.GetFullStatus()
-		pbFullStatus := toProtoFullStatus(fullStatus)
+		pbFullStatus := fullStatus.ToProto()
 		pbFullStatus.Events = s.statusRecorder.GetEventHistory()
-
 		pbFullStatus.SshServerState = s.getSSHServerState()
-
 		statusResponse.FullStatus = pbFullStatus
 	}
 
@@ -1600,94 +1595,6 @@ func parseEnvDuration(envVar string, defaultDuration time.Duration) time.Duratio
 	return defaultDuration
 }
 
-func toProtoFullStatus(fullStatus peer.FullStatus) *proto.FullStatus {
-	pbFullStatus := proto.FullStatus{
-		ManagementState: &proto.ManagementState{},
-		SignalState:     &proto.SignalState{},
-		LocalPeerState:  &proto.LocalPeerState{},
-		Peers:           []*proto.PeerState{},
-	}
-
-	pbFullStatus.ManagementState.URL = fullStatus.ManagementState.URL
-	pbFullStatus.ManagementState.Connected = fullStatus.ManagementState.Connected
-	if err := fullStatus.ManagementState.Error; err != nil {
-		pbFullStatus.ManagementState.Error = err.Error()
-	}
-
-	pbFullStatus.SignalState.URL = fullStatus.SignalState.URL
-	pbFullStatus.SignalState.Connected = fullStatus.SignalState.Connected
-	if err := fullStatus.SignalState.Error; err != nil {
-		pbFullStatus.SignalState.Error = err.Error()
-	}
-
-	pbFullStatus.LocalPeerState.IP = fullStatus.LocalPeerState.IP
-	pbFullStatus.LocalPeerState.PubKey = fullStatus.LocalPeerState.PubKey
-	pbFullStatus.LocalPeerState.KernelInterface = fullStatus.LocalPeerState.KernelInterface
-	pbFullStatus.LocalPeerState.Fqdn = fullStatus.LocalPeerState.FQDN
-	pbFullStatus.LocalPeerState.RosenpassPermissive = fullStatus.RosenpassState.Permissive
-	pbFullStatus.LocalPeerState.RosenpassEnabled = fullStatus.RosenpassState.Enabled
-	pbFullStatus.LocalPeerState.Networks = maps.Keys(fullStatus.LocalPeerState.Routes)
-	pbFullStatus.NumberOfForwardingRules = int32(fullStatus.NumOfForwardingRules)
-	pbFullStatus.LazyConnectionEnabled = fullStatus.LazyConnectionEnabled
-
-	for _, peerState := range fullStatus.Peers {
-		pbPeerState := &proto.PeerState{
-			IP:                         peerState.IP,
-			PubKey:                     peerState.PubKey,
-			ConnStatus:                 peerState.ConnStatus.String(),
-			ConnStatusUpdate:           timestamppb.New(peerState.ConnStatusUpdate),
-			Relayed:                    peerState.Relayed,
-			LocalIceCandidateType:      peerState.LocalIceCandidateType,
-			RemoteIceCandidateType:     peerState.RemoteIceCandidateType,
-			LocalIceCandidateEndpoint:  peerState.LocalIceCandidateEndpoint,
-			RemoteIceCandidateEndpoint: peerState.RemoteIceCandidateEndpoint,
-			RelayAddress:               peerState.RelayServerAddress,
-			Fqdn:                       peerState.FQDN,
-			LastWireguardHandshake:     timestamppb.New(peerState.LastWireguardHandshake),
-			BytesRx:                    peerState.BytesRx,
-			BytesTx:                    peerState.BytesTx,
-			RosenpassEnabled:           peerState.RosenpassEnabled,
-			Networks:                   maps.Keys(peerState.GetRoutes()),
-			Latency:                    durationpb.New(peerState.Latency),
-			SshHostKey:                 peerState.SSHHostKey,
-		}
-		pbFullStatus.Peers = append(pbFullStatus.Peers, pbPeerState)
-	}
-
-	for _, relayState := range fullStatus.Relays {
-		pbRelayState := &proto.RelayState{
-			URI:       relayState.URI,
-			Available: relayState.Err == nil,
-		}
-		if err := relayState.Err; err != nil {
-			pbRelayState.Error = err.Error()
-		}
-		pbFullStatus.Relays = append(pbFullStatus.Relays, pbRelayState)
-	}
-
-	for _, dnsState := range fullStatus.NSGroupStates {
-		var err string
-		if dnsState.Error != nil {
-			err = dnsState.Error.Error()
-		}
-
-		var servers []string
-		for _, server := range dnsState.Servers {
-			servers = append(servers, server.String())
-		}
-
-		pbDnsState := &proto.NSGroupState{
-			Servers: servers,
-			Domains: dnsState.Domains,
-			Enabled: dnsState.Enabled,
-			Error:   err,
-		}
-		pbFullStatus.DnsServers = append(pbFullStatus.DnsServers, pbDnsState)
-	}
-
-	return &pbFullStatus
-}
-
 // sendTerminalNotification sends a terminal notification message
 // to inform the user that the NetBird connection session has expired.
 func sendTerminalNotification() error {

client/status/status.go

@@ -325,61 +325,64 @@ func sortPeersByIP(peersStateDetail []PeerStateDetailOutput) {
 	}
 }
 
-func ParseToJSON(overview OutputOverview) (string, error) {
-	jsonBytes, err := json.Marshal(overview)
+// JSON returns the status overview as a JSON string.
+func (o *OutputOverview) JSON() (string, error) {
+	jsonBytes, err := json.Marshal(o)
 	if err != nil {
 		return "", fmt.Errorf("json marshal failed")
 	}
 	return string(jsonBytes), err
 }
 
-func ParseToYAML(overview OutputOverview) (string, error) {
-	yamlBytes, err := yaml.Marshal(overview)
+// YAML returns the status overview as a YAML string.
+func (o *OutputOverview) YAML() (string, error) {
+	yamlBytes, err := yaml.Marshal(o)
 	if err != nil {
 		return "", fmt.Errorf("yaml marshal failed")
 	}
 	return string(yamlBytes), nil
 }
 
-func ParseGeneralSummary(overview OutputOverview, showURL bool, showRelays bool, showNameServers bool, showSSHSessions bool) string {
+// GeneralSummary returns a general summary of the status overview.
+func (o *OutputOverview) GeneralSummary(showURL bool, showRelays bool, showNameServers bool, showSSHSessions bool) string {
 	var managementConnString string
-	if overview.ManagementState.Connected {
+	if o.ManagementState.Connected {
 		managementConnString = "Connected"
 		if showURL {
-			managementConnString = fmt.Sprintf("%s to %s", managementConnString, overview.ManagementState.URL)
+			managementConnString = fmt.Sprintf("%s to %s", managementConnString, o.ManagementState.URL)
 		}
 	} else {
 		managementConnString = "Disconnected"
-		if overview.ManagementState.Error != "" {
-			managementConnString = fmt.Sprintf("%s, reason: %s", managementConnString, overview.ManagementState.Error)
+		if o.ManagementState.Error != "" {
+			managementConnString = fmt.Sprintf("%s, reason: %s", managementConnString, o.ManagementState.Error)
 		}
 	}
 
 	var signalConnString string
-	if overview.SignalState.Connected {
+	if o.SignalState.Connected {
 		signalConnString = "Connected"
 		if showURL {
-			signalConnString = fmt.Sprintf("%s to %s", signalConnString, overview.SignalState.URL)
+			signalConnString = fmt.Sprintf("%s to %s", signalConnString, o.SignalState.URL)
 		}
 	} else {
 		signalConnString = "Disconnected"
-		if overview.SignalState.Error != "" {
-			signalConnString = fmt.Sprintf("%s, reason: %s", signalConnString, overview.SignalState.Error)
+		if o.SignalState.Error != "" {
+			signalConnString = fmt.Sprintf("%s, reason: %s", signalConnString, o.SignalState.Error)
 		}
 	}
 
 	interfaceTypeString := "Userspace"
-	interfaceIP := overview.IP
-	if overview.KernelInterface {
+	interfaceIP := o.IP
+	if o.KernelInterface {
 		interfaceTypeString = "Kernel"
-	} else if overview.IP == "" {
+	} else if o.IP == "" {
 		interfaceTypeString = "N/A"
 		interfaceIP = "N/A"
 	}
 
 	var relaysString string
 	if showRelays {
-		for _, relay := range overview.Relays.Details {
+		for _, relay := range o.Relays.Details {
 			available := "Available"
 			reason := ""
 
@@ -395,18 +398,18 @@ func ParseGeneralSummary(overview OutputOverview, showURL bool, showRelays bool,
 			relaysString += fmt.Sprintf("\n  [%s] is %s%s", relay.URI, available, reason)
 		}
 	} else {
-		relaysString = fmt.Sprintf("%d/%d Available", overview.Relays.Available, overview.Relays.Total)
+		relaysString = fmt.Sprintf("%d/%d Available", o.Relays.Available, o.Relays.Total)
 	}
 
 	networks := "-"
-	if len(overview.Networks) > 0 {
-		sort.Strings(overview.Networks)
-		networks = strings.Join(overview.Networks, ", ")
+	if len(o.Networks) > 0 {
+		sort.Strings(o.Networks)
+		networks = strings.Join(o.Networks, ", ")
 	}
 
 	var dnsServersString string
 	if showNameServers {
-		for _, nsServerGroup := range overview.NSServerGroups {
+		for _, nsServerGroup := range o.NSServerGroups {
 			enabled := "Available"
 			if !nsServerGroup.Enabled {
 				enabled = "Unavailable"
@@ -430,25 +433,25 @@ func ParseGeneralSummary(overview OutputOverview, showURL bool, showRelays bool,
 			)
 		}
 	} else {
-		dnsServersString = fmt.Sprintf("%d/%d Available", countEnabled(overview.NSServerGroups), len(overview.NSServerGroups))
+		dnsServersString = fmt.Sprintf("%d/%d Available", countEnabled(o.NSServerGroups), len(o.NSServerGroups))
 	}
 
 	rosenpassEnabledStatus := "false"
-	if overview.RosenpassEnabled {
+	if o.RosenpassEnabled {
 		rosenpassEnabledStatus = "true"
-		if overview.RosenpassPermissive {
+		if o.RosenpassPermissive {
 			rosenpassEnabledStatus = "true (permissive)" //nolint:gosec
 		}
 	}
 
 	lazyConnectionEnabledStatus := "false"
-	if overview.LazyConnectionEnabled {
+	if o.LazyConnectionEnabled {
 		lazyConnectionEnabledStatus = "true"
 	}
 
 	sshServerStatus := "Disabled"
-	if overview.SSHServerState.Enabled {
-		sessionCount := len(overview.SSHServerState.Sessions)
+	if o.SSHServerState.Enabled {
+		sessionCount := len(o.SSHServerState.Sessions)
 		if sessionCount > 0 {
 			sessionWord := "session"
 			if sessionCount > 1 {
@@ -460,7 +463,7 @@ func ParseGeneralSummary(overview OutputOverview, showURL bool, showRelays bool,
 		}
 
 		if showSSHSessions && sessionCount > 0 {
-			for _, session := range overview.SSHServerState.Sessions {
+			for _, session := range o.SSHServerState.Sessions {
 				var sessionDisplay string
 				if session.JWTUsername != "" {
 					sessionDisplay = fmt.Sprintf("[%s@%s -> %s] %s",
@@ -484,7 +487,7 @@ func ParseGeneralSummary(overview OutputOverview, showURL bool, showRelays bool,
 		}
 	}
 
-	peersCountString := fmt.Sprintf("%d/%d Connected", overview.Peers.Connected, overview.Peers.Total)
+	peersCountString := fmt.Sprintf("%d/%d Connected", o.Peers.Connected, o.Peers.Total)
 
 	goos := runtime.GOOS
 	goarch := runtime.GOARCH
@@ -512,30 +515,31 @@ func ParseGeneralSummary(overview OutputOverview, showURL bool, showRelays bool,
 			"Forwarding rules: %d\n"+
 			"Peers count: %s\n",
 		fmt.Sprintf("%s/%s%s", goos, goarch, goarm),
-		overview.DaemonVersion,
+		o.DaemonVersion,
 		version.NetbirdVersion(),
-		overview.ProfileName,
+		o.ProfileName,
 		managementConnString,
 		signalConnString,
 		relaysString,
 		dnsServersString,
-		domain.Domain(overview.FQDN).SafeString(),
+		domain.Domain(o.FQDN).SafeString(),
 		interfaceIP,
 		interfaceTypeString,
 		rosenpassEnabledStatus,
 		lazyConnectionEnabledStatus,
 		sshServerStatus,
 		networks,
-		overview.NumberOfForwardingRules,
+		o.NumberOfForwardingRules,
 		peersCountString,
 	)
 	return summary
 }
 
-func ParseToFullDetailSummary(overview OutputOverview) string {
-	parsedPeersString := parsePeers(overview.Peers, overview.RosenpassEnabled, overview.RosenpassPermissive)
-	parsedEventsString := parseEvents(overview.Events)
-	summary := ParseGeneralSummary(overview, true, true, true, true)
+// FullDetailSummary returns a full detailed summary with peer details and events.
+func (o *OutputOverview) FullDetailSummary() string {
+	parsedPeersString := parsePeers(o.Peers, o.RosenpassEnabled, o.RosenpassPermissive)
+	parsedEventsString := parseEvents(o.Events)
+	summary := o.GeneralSummary(true, true, true, true)
 
 	return fmt.Sprintf(
 		"Peers detail:"+

client/status/status_test.go

@@ -268,7 +268,7 @@ func TestSortingOfPeers(t *testing.T) {
 }
 
 func TestParsingToJSON(t *testing.T) {
-	jsonString, _ := ParseToJSON(overview)
+	jsonString, _ := overview.JSON()
 
 	//@formatter:off
 	expectedJSONString := `
@@ -404,7 +404,7 @@ func TestParsingToJSON(t *testing.T) {
 }
 
 func TestParsingToYAML(t *testing.T) {
-	yaml, _ := ParseToYAML(overview)
+	yaml, _ := overview.YAML()
 
 	expectedYAML :=
 		`peers:
@@ -511,7 +511,7 @@ func TestParsingToDetail(t *testing.T) {
 	lastConnectionUpdate2 := timeAgo(overview.Peers.Details[1].LastStatusUpdate)
 	lastHandshake2 := timeAgo(overview.Peers.Details[1].LastWireguardHandshake)
 
-	detail := ParseToFullDetailSummary(overview)
+	detail := overview.FullDetailSummary()
 
 	expectedDetail := fmt.Sprintf(
 		`Peers detail:
@@ -575,7 +575,7 @@ Peers count: 2/2 Connected
 }
 
 func TestParsingToShortVersion(t *testing.T) {
-	shortVersion := ParseGeneralSummary(overview, false, false, false, false)
+	shortVersion := overview.GeneralSummary(false, false, false, false)
 
 	expectedString := fmt.Sprintf("OS: %s/%s", runtime.GOOS, runtime.GOARCH) + `
 Daemon version: 0.14.1

client/ui/debug.go

@@ -441,7 +441,7 @@ func (s *serviceClient) collectDebugData(
 	var postUpStatusOutput string
 	if postUpStatus != nil {
 		overview := nbstatus.ConvertToStatusOutputOverview(postUpStatus, params.anonymize, "", nil, nil, nil, "", profName)
-		postUpStatusOutput = nbstatus.ParseToFullDetailSummary(overview)
+		postUpStatusOutput = overview.FullDetailSummary()
 	}
 	headerPostUp := fmt.Sprintf("----- NetBird post-up - Timestamp: %s", time.Now().Format(time.RFC3339))
 	statusOutput := fmt.Sprintf("%s\n%s", headerPostUp, postUpStatusOutput)
@@ -458,7 +458,7 @@ func (s *serviceClient) collectDebugData(
 	var preDownStatusOutput string
 	if preDownStatus != nil {
 		overview := nbstatus.ConvertToStatusOutputOverview(preDownStatus, params.anonymize, "", nil, nil, nil, "", profName)
-		preDownStatusOutput = nbstatus.ParseToFullDetailSummary(overview)
+		preDownStatusOutput = overview.FullDetailSummary()
 	}
 	headerPreDown := fmt.Sprintf("----- NetBird pre-down - Timestamp: %s - Duration: %s",
 		time.Now().Format(time.RFC3339), params.duration)
@@ -595,7 +595,7 @@ func (s *serviceClient) createDebugBundle(anonymize bool, systemInfo bool, uploa
 	var statusOutput string
 	if statusResp != nil {
 		overview := nbstatus.ConvertToStatusOutputOverview(statusResp, anonymize, "", nil, nil, nil, "", profName)
-		statusOutput = nbstatus.ParseToFullDetailSummary(overview)
+		statusOutput = overview.FullDetailSummary()
 	}
 
 	request := &proto.DebugBundleRequest{

client/wasm/cmd/main.go

@@ -9,20 +9,29 @@ import (
 	"time"
 
 	log "github.com/sirupsen/logrus"
+	"google.golang.org/protobuf/encoding/protojson"
 
 	netbird "github.com/netbirdio/netbird/client/embed"
+	"github.com/netbirdio/netbird/client/proto"
 	sshdetection "github.com/netbirdio/netbird/client/ssh/detection"
+	nbstatus "github.com/netbirdio/netbird/client/status"
 	"github.com/netbirdio/netbird/client/wasm/internal/http"
 	"github.com/netbirdio/netbird/client/wasm/internal/rdp"
 	"github.com/netbirdio/netbird/client/wasm/internal/ssh"
 	"github.com/netbirdio/netbird/util"
+	"github.com/netbirdio/netbird/version"
 )
 
 const (
 	clientStartTimeout         = 30 * time.Second
 	clientStopTimeout          = 10 * time.Second
+	pingTimeout                = 10 * time.Second
 	defaultLogLevel            = "warn"
 	defaultSSHDetectionTimeout = 20 * time.Second
+
+	icmpEchoRequest = 8
+	icmpCodeEcho    = 0
+	pingBufferSize  = 1500
 )
 
 func main() {
@@ -113,18 +122,45 @@ func createStopMethod(client *netbird.Client) js.Func {
 	})
 }
 
+// validateSSHArgs validates SSH connection arguments
+func validateSSHArgs(args []js.Value) (host string, port int, username string, err js.Value) {
+	if len(args) < 2 {
+		return "", 0, "", js.ValueOf("error: requires host and port")
+	}
+
+	if args[0].Type() != js.TypeString {
+		return "", 0, "", js.ValueOf("host parameter must be a string")
+	}
+	if args[1].Type() != js.TypeNumber {
+		return "", 0, "", js.ValueOf("port parameter must be a number")
+	}
+
+	host = args[0].String()
+	port = args[1].Int()
+	username = "root"
+
+	if len(args) > 2 {
+		if args[2].Type() == js.TypeString && args[2].String() != "" {
+			username = args[2].String()
+		} else if args[2].Type() != js.TypeString {
+			return "", 0, "", js.ValueOf("username parameter must be a string")
+		}
+	}
+
+	return host, port, username, js.Undefined()
+}
+
 // createSSHMethod creates the SSH connection method
 func createSSHMethod(client *netbird.Client) js.Func {
 	return js.FuncOf(func(this js.Value, args []js.Value) any {
-		if len(args) < 2 {
-			return js.ValueOf("error: requires host and port")
-		}
-
-		host := args[0].String()
-		port := args[1].Int()
-		username := "root"
-		if len(args) > 2 && args[2].String() != "" {
-			username = args[2].String()
+		host, port, username, validationErr := validateSSHArgs(args)
+		if !validationErr.IsUndefined() {
+			if validationErr.Type() == js.TypeString && validationErr.String() == "error: requires host and port" {
+				return validationErr
+			}
+			return createPromise(func(resolve, reject js.Value) {
+				reject.Invoke(validationErr)
+			})
 		}
 
 		var jwtToken string
@@ -154,6 +190,110 @@ func createSSHMethod(client *netbird.Client) js.Func {
 	})
 }
 
+func performPing(client *netbird.Client, hostname string) {
+	ctx, cancel := context.WithTimeout(context.Background(), pingTimeout)
+	defer cancel()
+
+	start := time.Now()
+	conn, err := client.Dial(ctx, "ping", hostname)
+	if err != nil {
+		js.Global().Get("console").Call("log", fmt.Sprintf("Ping to %s failed: %v", hostname, err))
+		return
+	}
+	defer func() {
+		if err := conn.Close(); err != nil {
+			log.Debugf("failed to close ping connection: %v", err)
+		}
+	}()
+
+	icmpData := make([]byte, 8)
+	icmpData[0] = icmpEchoRequest
+	icmpData[1] = icmpCodeEcho
+
+	if _, err := conn.Write(icmpData); err != nil {
+		js.Global().Get("console").Call("log", fmt.Sprintf("Ping to %s write failed: %v", hostname, err))
+		return
+	}
+
+	buf := make([]byte, pingBufferSize)
+	if _, err := conn.Read(buf); err != nil {
+		js.Global().Get("console").Call("log", fmt.Sprintf("Ping to %s read failed: %v", hostname, err))
+		return
+	}
+
+	latency := time.Since(start)
+	js.Global().Get("console").Call("log", fmt.Sprintf("Ping to %s: %dms", hostname, latency.Milliseconds()))
+}
+
+func performPingTCP(client *netbird.Client, hostname string, port int) {
+	ctx, cancel := context.WithTimeout(context.Background(), pingTimeout)
+	defer cancel()
+
+	address := fmt.Sprintf("%s:%d", hostname, port)
+	start := time.Now()
+	conn, err := client.Dial(ctx, "tcp", address)
+	if err != nil {
+		js.Global().Get("console").Call("log", fmt.Sprintf("TCP ping to %s failed: %v", address, err))
+		return
+	}
+	latency := time.Since(start)
+
+	if err := conn.Close(); err != nil {
+		log.Debugf("failed to close TCP connection: %v", err)
+	}
+
+	js.Global().Get("console").Call("log", fmt.Sprintf("TCP ping to %s succeeded: %dms", address, latency.Milliseconds()))
+}
+
+// createPingMethod creates the ping method
+func createPingMethod(client *netbird.Client) js.Func {
+	return js.FuncOf(func(this js.Value, args []js.Value) any {
+		if len(args) < 1 {
+			return js.ValueOf("error: hostname required")
+		}
+
+		if args[0].Type() != js.TypeString {
+			return createPromise(func(resolve, reject js.Value) {
+				reject.Invoke(js.ValueOf("hostname parameter must be a string"))
+			})
+		}
+
+		hostname := args[0].String()
+		return createPromise(func(resolve, reject js.Value) {
+			performPing(client, hostname)
+			resolve.Invoke(js.Undefined())
+		})
+	})
+}
+
+// createPingTCPMethod creates the pingtcp method
+func createPingTCPMethod(client *netbird.Client) js.Func {
+	return js.FuncOf(func(this js.Value, args []js.Value) any {
+		if len(args) < 2 {
+			return js.ValueOf("error: hostname and port required")
+		}
+
+		if args[0].Type() != js.TypeString {
+			return createPromise(func(resolve, reject js.Value) {
+				reject.Invoke(js.ValueOf("hostname parameter must be a string"))
+			})
+		}
+
+		if args[1].Type() != js.TypeNumber {
+			return createPromise(func(resolve, reject js.Value) {
+				reject.Invoke(js.ValueOf("port parameter must be a number"))
+			})
+		}
+
+		hostname := args[0].String()
+		port := args[1].Int()
+		return createPromise(func(resolve, reject js.Value) {
+			performPingTCP(client, hostname, port)
+			resolve.Invoke(js.Undefined())
+		})
+	})
+}
+
 // createProxyRequestMethod creates the proxyRequest method
 func createProxyRequestMethod(client *netbird.Client) js.Func {
 	return js.FuncOf(func(this js.Value, args []js.Value) any {
@@ -162,6 +302,11 @@ func createProxyRequestMethod(client *netbird.Client) js.Func {
 		}
 
 		request := args[0]
+		if request.Type() != js.TypeObject {
+			return createPromise(func(resolve, reject js.Value) {
+				reject.Invoke(js.ValueOf("request parameter must be an object"))
+			})
+		}
 
 		return createPromise(func(resolve, reject js.Value) {
 			response, err := http.ProxyRequest(client, request)
@@ -181,11 +326,145 @@ func createRDPProxyMethod(client *netbird.Client) js.Func {
 			return js.ValueOf("error: hostname and port required")
 		}
 
+		if args[0].Type() != js.TypeString {
+			return createPromise(func(resolve, reject js.Value) {
+				reject.Invoke(js.ValueOf("hostname parameter must be a string"))
+			})
+		}
+		if args[1].Type() != js.TypeString {
+			return createPromise(func(resolve, reject js.Value) {
+				reject.Invoke(js.ValueOf("port parameter must be a string"))
+			})
+		}
+
 		proxy := rdp.NewRDCleanPathProxy(client)
 		return proxy.CreateProxy(args[0].String(), args[1].String())
 	})
 }
 
+// getStatusOverview is a helper to get the status overview
+func getStatusOverview(client *netbird.Client) (nbstatus.OutputOverview, error) {
+	fullStatus, err := client.Status()
+	if err != nil {
+		return nbstatus.OutputOverview{}, err
+	}
+
+	pbFullStatus := fullStatus.ToProto()
+	statusResp := &proto.StatusResponse{
+		DaemonVersion: version.NetbirdVersion(),
+		FullStatus:    pbFullStatus,
+	}
+
+	return nbstatus.ConvertToStatusOutputOverview(statusResp, false, "", nil, nil, nil, "", ""), nil
+}
+
+// createStatusMethod creates the status method that returns JSON
+func createStatusMethod(client *netbird.Client) js.Func {
+	return js.FuncOf(func(_ js.Value, args []js.Value) any {
+		return createPromise(func(resolve, reject js.Value) {
+			overview, err := getStatusOverview(client)
+			if err != nil {
+				reject.Invoke(js.ValueOf(err.Error()))
+				return
+			}
+
+			jsonStr, err := overview.JSON()
+			if err != nil {
+				reject.Invoke(js.ValueOf(err.Error()))
+				return
+			}
+			jsonObj := js.Global().Get("JSON").Call("parse", jsonStr)
+			resolve.Invoke(jsonObj)
+		})
+	})
+}
+
+// createStatusSummaryMethod creates the statusSummary method
+func createStatusSummaryMethod(client *netbird.Client) js.Func {
+	return js.FuncOf(func(_ js.Value, args []js.Value) any {
+		return createPromise(func(resolve, reject js.Value) {
+			overview, err := getStatusOverview(client)
+			if err != nil {
+				reject.Invoke(js.ValueOf(err.Error()))
+				return
+			}
+
+			summary := overview.GeneralSummary(false, false, false, false)
+			js.Global().Get("console").Call("log", summary)
+			resolve.Invoke(js.Undefined())
+		})
+	})
+}
+
+// createStatusDetailMethod creates the statusDetail method
+func createStatusDetailMethod(client *netbird.Client) js.Func {
+	return js.FuncOf(func(_ js.Value, args []js.Value) any {
+		return createPromise(func(resolve, reject js.Value) {
+			overview, err := getStatusOverview(client)
+			if err != nil {
+				reject.Invoke(js.ValueOf(err.Error()))
+				return
+			}
+
+			detail := overview.FullDetailSummary()
+			js.Global().Get("console").Call("log", detail)
+			resolve.Invoke(js.Undefined())
+		})
+	})
+}
+
+// createGetSyncResponseMethod creates the getSyncResponse method that returns the latest sync response as JSON
+func createGetSyncResponseMethod(client *netbird.Client) js.Func {
+	return js.FuncOf(func(_ js.Value, args []js.Value) any {
+		return createPromise(func(resolve, reject js.Value) {
+			syncResp, err := client.GetLatestSyncResponse()
+			if err != nil {
+				reject.Invoke(js.ValueOf(err.Error()))
+				return
+			}
+
+			options := protojson.MarshalOptions{
+				EmitUnpopulated: true,
+				UseProtoNames:   true,
+				AllowPartial:    true,
+			}
+			jsonBytes, err := options.Marshal(syncResp)
+			if err != nil {
+				reject.Invoke(js.ValueOf(fmt.Sprintf("marshal sync response: %v", err)))
+				return
+			}
+
+			jsonObj := js.Global().Get("JSON").Call("parse", string(jsonBytes))
+			resolve.Invoke(jsonObj)
+		})
+	})
+}
+
+// createSetLogLevelMethod creates the setLogLevel method to dynamically change logging level
+func createSetLogLevelMethod(client *netbird.Client) js.Func {
+	return js.FuncOf(func(_ js.Value, args []js.Value) any {
+		if len(args) < 1 {
+			return js.ValueOf("error: log level required")
+		}
+
+		if args[0].Type() != js.TypeString {
+			return createPromise(func(resolve, reject js.Value) {
+				reject.Invoke(js.ValueOf("log level parameter must be a string"))
+			})
+		}
+
+		logLevel := args[0].String()
+		return createPromise(func(resolve, reject js.Value) {
+			if err := client.SetLogLevel(logLevel); err != nil {
+				reject.Invoke(js.ValueOf(fmt.Sprintf("set log level: %v", err)))
+				return
+			}
+			log.Infof("Log level set to: %s", logLevel)
+			resolve.Invoke(js.ValueOf(true))
+		})
+	})
+}
+
 // createPromise is a helper to create JavaScript promises
 func createPromise(handler func(resolve, reject js.Value)) js.Value {
 	return js.Global().Get("Promise").New(js.FuncOf(func(_ js.Value, promiseArgs []js.Value) any {
@@ -237,17 +516,24 @@ func createClientObject(client *netbird.Client) js.Value {
 
 	obj["start"] = createStartMethod(client)
 	obj["stop"] = createStopMethod(client)
+	obj["ping"] = createPingMethod(client)
+	obj["pingtcp"] = createPingTCPMethod(client)
 	obj["detectSSHServerType"] = createDetectSSHServerMethod(client)
 	obj["createSSHConnection"] = createSSHMethod(client)
 	obj["proxyRequest"] = createProxyRequestMethod(client)
 	obj["createRDPProxy"] = createRDPProxyMethod(client)
+	obj["status"] = createStatusMethod(client)
+	obj["statusSummary"] = createStatusSummaryMethod(client)
+	obj["statusDetail"] = createStatusDetailMethod(client)
+	obj["getSyncResponse"] = createGetSyncResponseMethod(client)
+	obj["setLogLevel"] = createSetLogLevelMethod(client)
 
 	return js.ValueOf(obj)
 }
 
 // netBirdClientConstructor acts as a JavaScript constructor function
-func netBirdClientConstructor(this js.Value, args []js.Value) any {
-	return js.Global().Get("Promise").New(js.FuncOf(func(this js.Value, promiseArgs []js.Value) any {
+func netBirdClientConstructor(_ js.Value, args []js.Value) any {
+	return js.Global().Get("Promise").New(js.FuncOf(func(_ js.Value, promiseArgs []js.Value) any {
 		resolve := promiseArgs[0]
 		reject := promiseArgs[1]
 

go.mod

@@ -78,8 +78,8 @@ require (
 	github.com/pion/logging v0.2.4
 	github.com/pion/randutil v0.1.0
 	github.com/pion/stun/v2 v2.0.0
-	github.com/pion/stun/v3 v3.0.0
-	github.com/pion/transport/v3 v3.0.7
+	github.com/pion/stun/v3 v3.1.0
+	github.com/pion/transport/v3 v3.1.1
 	github.com/pion/turn/v3 v3.0.1
 	github.com/pkg/sftp v1.13.9
 	github.com/prometheus/client_golang v1.23.2
@@ -241,7 +241,7 @@ require (
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.1.0 // indirect
 	github.com/pion/dtls/v2 v2.2.10 // indirect
-	github.com/pion/dtls/v3 v3.0.7 // indirect
+	github.com/pion/dtls/v3 v3.0.9 // indirect
 	github.com/pion/mdns/v2 v2.0.7 // indirect
 	github.com/pion/transport/v2 v2.2.4 // indirect
 	github.com/pion/turn/v4 v4.1.1 // indirect
@@ -263,7 +263,7 @@ require (
 	github.com/tklauser/numcpus v0.8.0 // indirect
 	github.com/vishvananda/netns v0.0.5 // indirect
 	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
-	github.com/wlynxg/anet v0.0.3 // indirect
+	github.com/wlynxg/anet v0.0.5 // indirect
 	github.com/yuin/goldmark v1.7.8 // indirect
 	github.com/zeebo/blake3 v0.2.3 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect

go.sum

@@ -444,8 +444,8 @@ github.com/petermattis/goid v0.0.0-20250303134427-723919f7f203/go.mod h1:pxMtw7c
 github.com/pion/dtls/v2 v2.2.7/go.mod h1:8WiMkebSHFD0T+dIU+UeBaoV7kDhOW5oDCzZ7WZ/F9s=
 github.com/pion/dtls/v2 v2.2.10 h1:u2Axk+FyIR1VFTPurktB+1zoEPGIW3bmyj3LEFrXjAA=
 github.com/pion/dtls/v2 v2.2.10/go.mod h1:d9SYc9fch0CqK90mRk1dC7AkzzpwJj6u2GU3u+9pqFE=
-github.com/pion/dtls/v3 v3.0.7 h1:bItXtTYYhZwkPFk4t1n3Kkf5TDrfj6+4wG+CZR8uI9Q=
-github.com/pion/dtls/v3 v3.0.7/go.mod h1:uDlH5VPrgOQIw59irKYkMudSFprY9IEFCqz/eTz16f8=
+github.com/pion/dtls/v3 v3.0.9 h1:4AijfFRm8mAjd1gfdlB1wzJF3fjjR/VPIpJgkEtvYmM=
+github.com/pion/dtls/v3 v3.0.9/go.mod h1:abApPjgadS/ra1wvUzHLc3o2HvoxppAh+NZkyApL4Os=
 github.com/pion/logging v0.2.2/go.mod h1:k0/tDVsRCX2Mb2ZEmTqNa7CWsQPc+YYCB7Q+5pahoms=
 github.com/pion/logging v0.2.4 h1:tTew+7cmQ+Mc1pTBLKH2puKsOvhm32dROumOZ655zB8=
 github.com/pion/logging v0.2.4/go.mod h1:DffhXTKYdNZU+KtJ5pyQDjvOAh/GsNSyv1lbkFbe3so=
@@ -455,14 +455,14 @@ github.com/pion/randutil v0.1.0 h1:CFG1UdESneORglEsnimhUjf33Rwjubwj6xfiOXBa3mA=
 github.com/pion/randutil v0.1.0/go.mod h1:XcJrSMMbbMRhASFVOlj/5hQial/Y8oH/HVo7TBZq+j8=
 github.com/pion/stun/v2 v2.0.0 h1:A5+wXKLAypxQri59+tmQKVs7+l6mMM+3d+eER9ifRU0=
 github.com/pion/stun/v2 v2.0.0/go.mod h1:22qRSh08fSEttYUmJZGlriq9+03jtVmXNODgLccj8GQ=
-github.com/pion/stun/v3 v3.0.0 h1:4h1gwhWLWuZWOJIJR9s2ferRO+W3zA/b6ijOI6mKzUw=
-github.com/pion/stun/v3 v3.0.0/go.mod h1:HvCN8txt8mwi4FBvS3EmDghW6aQJ24T+y+1TKjB5jyU=
+github.com/pion/stun/v3 v3.1.0 h1:bS1jjT3tGWZ4UPmIUeyalOylamTMTFg1OvXtY/r6seM=
+github.com/pion/stun/v3 v3.1.0/go.mod h1:egmx1CUcfSSGJxQCOjtVlomfPqmQ58BibPyuOWNGQEU=
 github.com/pion/transport/v2 v2.2.1/go.mod h1:cXXWavvCnFF6McHTft3DWS9iic2Mftcz1Aq29pGcU5g=
 github.com/pion/transport/v2 v2.2.4 h1:41JJK6DZQYSeVLxILA2+F4ZkKb4Xd/tFJZRFZQ9QAlo=
 github.com/pion/transport/v2 v2.2.4/go.mod h1:q2U/tf9FEfnSBGSW6w5Qp5PFWRLRj3NjLhCCgpRK4p0=
 github.com/pion/transport/v3 v3.0.1/go.mod h1:UY7kiITrlMv7/IKgd5eTUcaahZx5oUN3l9SzK5f5xE0=
-github.com/pion/transport/v3 v3.0.7 h1:iRbMH05BzSNwhILHoBoAPxoB9xQgOaJk+591KC9P1o0=
-github.com/pion/transport/v3 v3.0.7/go.mod h1:YleKiTZ4vqNxVwh77Z0zytYi7rXHl7j6uPLGhhz9rwo=
+github.com/pion/transport/v3 v3.1.1 h1:Tr684+fnnKlhPceU+ICdrw6KKkTms+5qHMgw6bIkYOM=
+github.com/pion/transport/v3 v3.1.1/go.mod h1:+c2eewC5WJQHiAA46fkMMzoYZSuGzA/7E2FPrOYHctQ=
 github.com/pion/turn/v3 v3.0.1 h1:wLi7BTQr6/Q20R0vt/lHbjv6y4GChFtC33nkYbasoT8=
 github.com/pion/turn/v3 v3.0.1/go.mod h1:MrJDKgqryDyWy1/4NT9TWfXWGMC7UHT6pJIv1+gMeNE=
 github.com/pion/turn/v4 v4.1.1 h1:9UnY2HB99tpDyz3cVVZguSxcqkJ1DsTSZ+8TGruh4fc=
@@ -574,8 +574,8 @@ github.com/vmihailenco/msgpack/v5 v5.4.1 h1:cQriyiUvjTwOHg8QZaPihLWeRAAVoCpE00IU
 github.com/vmihailenco/msgpack/v5 v5.4.1/go.mod h1:GaZTsDaehaPpQVyxrf5mtQlH+pc21PIudVV/E3rRQok=
 github.com/vmihailenco/tagparser/v2 v2.0.0 h1:y09buUbR+b5aycVFQs/g70pqKVZNBmxwAhO7/IwNM9g=
 github.com/vmihailenco/tagparser/v2 v2.0.0/go.mod h1:Wri+At7QHww0WTrCBeu4J6bNtoV6mEfg5OIWRZA9qds=
-github.com/wlynxg/anet v0.0.3 h1:PvR53psxFXstc12jelG6f1Lv4MWqE0tI76/hHGjh9rg=
-github.com/wlynxg/anet v0.0.3/go.mod h1:eay5PRQr7fIVAMbTbchTnO9gG65Hg/uYGdc7mguHxoA=
+github.com/wlynxg/anet v0.0.5 h1:J3VJGi1gvo0JwZ/P1/Yc/8p63SoW98B5dHkYDmpgvvU=
+github.com/wlynxg/anet v0.0.5/go.mod h1:eay5PRQr7fIVAMbTbchTnO9gG65Hg/uYGdc7mguHxoA=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=

relay/cmd/root.go

@@ -6,6 +6,7 @@ import (
 	"crypto/tls"
 	"errors"
 	"fmt"
+	"net"
 	"net/http"
 	"os"
 	"os/signal"
@@ -22,6 +23,7 @@ import (
 	"github.com/netbirdio/netbird/relay/server"
 	"github.com/netbirdio/netbird/shared/relay/auth"
 	"github.com/netbirdio/netbird/signal/metrics"
+	"github.com/netbirdio/netbird/stun"
 	"github.com/netbirdio/netbird/util"
 )
 
@@ -43,6 +45,10 @@ type Config struct {
 	LogLevel                 string
 	LogFile                  string
 	HealthcheckListenAddress string
+	// STUN server configuration
+	EnableSTUN   bool
+	STUNPorts    []int
+	STUNLogLevel string
 }
 
 func (c Config) Validate() error {
@@ -52,6 +58,25 @@ func (c Config) Validate() error {
 	if c.AuthSecret == "" {
 		return fmt.Errorf("auth secret is required")
 	}
+
+	// Validate STUN configuration
+	if c.EnableSTUN {
+		if len(c.STUNPorts) == 0 {
+			return fmt.Errorf("--stun-ports is required when --enable-stun is set")
+		}
+
+		seen := make(map[int]bool)
+		for _, port := range c.STUNPorts {
+			if port <= 0 || port > 65535 {
+				return fmt.Errorf("invalid STUN port %d: must be between 1 and 65535", port)
+			}
+			if seen[port] {
+				return fmt.Errorf("duplicate STUN port %d", port)
+			}
+			seen[port] = true
+		}
+	}
+
 	return nil
 }
 
@@ -91,6 +116,9 @@ func init() {
 	rootCmd.PersistentFlags().StringVar(&cobraConfig.LogLevel, "log-level", "info", "log level")
 	rootCmd.PersistentFlags().StringVar(&cobraConfig.LogFile, "log-file", "console", "log file")
 	rootCmd.PersistentFlags().StringVarP(&cobraConfig.HealthcheckListenAddress, "health-listen-address", "H", ":9000", "listen address of healthcheck server")
+	rootCmd.PersistentFlags().BoolVar(&cobraConfig.EnableSTUN, "enable-stun", false, "enable embedded STUN server")
+	rootCmd.PersistentFlags().IntSliceVar(&cobraConfig.STUNPorts, "stun-ports", []int{3478}, "ports for the embedded STUN server (can be specified multiple times or comma-separated)")
+	rootCmd.PersistentFlags().StringVar(&cobraConfig.STUNLogLevel, "stun-log-level", "info", "log level for STUN server (panic, fatal, error, warn, info, debug, trace)")
 
 	setFlagsFromEnvVars(rootCmd)
 }
@@ -119,21 +147,14 @@ func execute(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("failed to initialize log: %s", err)
 	}
 
+	// Resource creation phase (fail fast before starting any goroutines)
+
 	metricsServer, err := metrics.NewServer(cobraConfig.MetricsPort, "")
 	if err != nil {
 		log.Debugf("setup metrics: %v", err)
 		return fmt.Errorf("setup metrics: %v", err)
 	}
 
-	wg.Add(1)
-	go func() {
-		defer wg.Done()
-		log.Infof("running metrics server: %s%s", metricsServer.Addr, metricsServer.Endpoint)
-		if err := metricsServer.ListenAndServe(); !errors.Is(err, http.ErrServerClosed) {
-			log.Fatalf("Failed to start metrics server: %v", err)
-		}
-	}()
-
 	srvListenerCfg := server.ListenerConfig{
 		Address: cobraConfig.ListenAddress,
 	}
@@ -145,6 +166,12 @@ func execute(cmd *cobra.Command, args []string) error {
 	}
 	srvListenerCfg.TLSConfig = tlsConfig
 
+	// Create STUN listeners early to fail fast
+	stunListeners, err := createSTUNListeners()
+	if err != nil {
+		return err
+	}
+
 	hashedSecret := sha256.Sum256([]byte(cobraConfig.AuthSecret))
 	authenticator := auth.NewTimedHMACValidator(hashedSecret[:], 24*time.Hour)
 
@@ -155,60 +182,145 @@ func execute(cmd *cobra.Command, args []string) error {
 		TLSSupport:     tlsSupport,
 	}
 
-	srv, err := server.NewServer(cfg)
+	srv, err := createRelayServer(cfg)
 	if err != nil {
-		log.Debugf("failed to create relay server: %v", err)
-		return fmt.Errorf("failed to create relay server: %v", err)
+		cleanupSTUNListeners(stunListeners)
+		return err
 	}
+
+	hCfg := healthcheck.Config{
+		ListenAddress:  cobraConfig.HealthcheckListenAddress,
+		ServiceChecker: srv,
+	}
+	httpHealthcheck, err := createHealthCheck(hCfg)
+	if err != nil {
+		cleanupSTUNListeners(stunListeners)
+		return err
+	}
+
+	var stunServer *stun.Server
+	if len(stunListeners) > 0 {
+		stunServer = stun.NewServer(stunListeners, cobraConfig.STUNLogLevel)
+	}
+
+	// Start all servers (only after all resources are successfully created)
+	startServers(&wg, metricsServer, srv, srvListenerCfg, httpHealthcheck, stunServer)
+
+	waitForExitSignal()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	err = shutdownServers(ctx, metricsServer, srv, httpHealthcheck, stunServer)
+	wg.Wait()
+	return err
+}
+
+func startServers(wg *sync.WaitGroup, metricsServer *metrics.Metrics, srv *server.Server, srvListenerCfg server.ListenerConfig, httpHealthcheck *healthcheck.Server, stunServer *stun.Server) {
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		log.Infof("running metrics server: %s%s", metricsServer.Addr, metricsServer.Endpoint)
+		if err := metricsServer.ListenAndServe(); !errors.Is(err, http.ErrServerClosed) {
+			log.Fatalf("failed to start metrics server: %v", err)
+		}
+	}()
+
 	instanceURL := srv.InstanceURL()
 	log.Infof("server will be available on: %s", instanceURL.String())
 	wg.Add(1)
 	go func() {
 		defer wg.Done()
 		if err := srv.Listen(srvListenerCfg); err != nil {
-			log.Fatalf("failed to bind server: %s", err)
+			log.Fatalf("failed to bind relay server: %s", err)
 		}
 	}()
 
-	hCfg := healthcheck.Config{
-		ListenAddress:  cobraConfig.HealthcheckListenAddress,
-		ServiceChecker: srv,
-	}
-	httpHealthcheck, err := healthcheck.NewServer(hCfg)
-	if err != nil {
-		log.Debugf("failed to create healthcheck server: %v", err)
-		return fmt.Errorf("failed to create healthcheck server: %v", err)
-	}
 	wg.Add(1)
 	go func() {
 		defer wg.Done()
 		if err := httpHealthcheck.ListenAndServe(); !errors.Is(err, http.ErrServerClosed) {
-			log.Fatalf("Failed to start healthcheck server: %v", err)
+			log.Fatalf("failed to start healthcheck server: %v", err)
 		}
 	}()
 
-	// it will block until exit signal
-	waitForExitSignal()
+	if stunServer != nil {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			if err := stunServer.Listen(); err != nil {
+				if errors.Is(err, stun.ErrServerClosed) {
+					return
+				}
+				log.Errorf("STUN server error: %v", err)
+			}
+		}()
+	}
+}
 
-	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
-	defer cancel()
+func shutdownServers(ctx context.Context, metricsServer *metrics.Metrics, srv *server.Server, httpHealthcheck *healthcheck.Server, stunServer *stun.Server) error {
+	var errs error
 
-	var shutDownErrors error
 	if err := httpHealthcheck.Shutdown(ctx); err != nil {
-		shutDownErrors = multierror.Append(shutDownErrors, fmt.Errorf("failed to close healthcheck server: %v", err))
+		errs = multierror.Append(errs, fmt.Errorf("failed to close healthcheck server: %w", err))
+	}
+
+	if stunServer != nil {
+		if err := stunServer.Shutdown(); err != nil {
+			errs = multierror.Append(errs, fmt.Errorf("failed to close STUN server: %w", err))
+		}
 	}
 
 	if err := srv.Shutdown(ctx); err != nil {
-		shutDownErrors = multierror.Append(shutDownErrors, fmt.Errorf("failed to close server: %s", err))
+		errs = multierror.Append(errs, fmt.Errorf("failed to close relay server: %w", err))
 	}
 
 	log.Infof("shutting down metrics server")
 	if err := metricsServer.Shutdown(ctx); err != nil {
-		shutDownErrors = multierror.Append(shutDownErrors, fmt.Errorf("failed to close metrics server: %v", err))
+		errs = multierror.Append(errs, fmt.Errorf("failed to close metrics server: %w", err))
 	}
 
-	wg.Wait()
-	return shutDownErrors
+	return errs
+}
+
+func createHealthCheck(hCfg healthcheck.Config) (*healthcheck.Server, error) {
+	httpHealthcheck, err := healthcheck.NewServer(hCfg)
+	if err != nil {
+		log.Debugf("failed to create healthcheck server: %v", err)
+		return nil, fmt.Errorf("failed to create healthcheck server: %v", err)
+	}
+	return httpHealthcheck, nil
+}
+
+func createRelayServer(cfg server.Config) (*server.Server, error) {
+	srv, err := server.NewServer(cfg)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create relay server: %v", err)
+	}
+	return srv, nil
+}
+
+func cleanupSTUNListeners(stunListeners []*net.UDPConn) {
+	for _, l := range stunListeners {
+		_ = l.Close()
+	}
+}
+
+func createSTUNListeners() ([]*net.UDPConn, error) {
+	var stunListeners []*net.UDPConn
+	if cobraConfig.EnableSTUN {
+		for _, port := range cobraConfig.STUNPorts {
+			listener, err := net.ListenUDP("udp", &net.UDPAddr{Port: port})
+			if err != nil {
+				// Close already opened listeners on failure
+				cleanupSTUNListeners(stunListeners)
+				log.Debugf("failed to create STUN listener on port %d: %v", port, err)
+				return nil, fmt.Errorf("failed to create STUN listener on port %d: %v", port, err)
+			}
+			stunListeners = append(stunListeners, listener)
+		}
+	}
+	return stunListeners, nil
 }
 
 func handleTLSConfig(cfg *Config) (*tls.Config, bool, error) {

release_files/ui-post-install.sh

@@ -8,6 +8,10 @@ pid="$(pgrep -x -f /usr/bin/netbird-ui || true)"
 if [ -n "${pid}" ]
 then
   uid="$(cat /proc/"${pid}"/loginuid)"
+  # loginuid can be 4294967295 (-1) if not set, fall back to process uid
+  if [ "${uid}" = "4294967295" ] || [ "${uid}" = "-1" ]; then
+    uid="$(stat -c '%u' /proc/"${pid}")"
+  fi
   username="$(id -nu "${uid}")"
   # Only re-run if it was already running
   pkill -x -f /usr/bin/netbird-ui >/dev/null 2>&1

stun/server.go

@@ -0,0 +1,170 @@
+// Package stun provides an embedded STUN server for NAT traversal discovery.
+package stun
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"sync"
+
+	"github.com/hashicorp/go-multierror"
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/formatter"
+	"github.com/pion/stun/v3"
+)
+
+// ErrServerClosed is returned by Listen when the server is shut down gracefully.
+var ErrServerClosed = errors.New("stun: server closed")
+
+// ErrNoListeners is returned by Listen when no UDP connections were provided.
+var ErrNoListeners = errors.New("stun: no listeners configured")
+
+// Server implements a STUN server that responds to binding requests
+// with the client's reflexive transport address.
+type Server struct {
+	conns    []*net.UDPConn
+	logger   *log.Entry
+	logLevel log.Level
+
+	wg sync.WaitGroup
+}
+
+// NewServer creates a new STUN server with the given UDP listeners.
+// The caller is responsible for creating and providing the listeners.
+// logLevel can be: panic, fatal, error, warn, info, debug, trace
+func NewServer(conns []*net.UDPConn, logLevel string) *Server {
+	level, err := log.ParseLevel(logLevel)
+	if err != nil {
+		level = log.InfoLevel
+	}
+
+	// Create a separate logger with its own level setting
+	// This allows --stun-log-level to work independently of --log-level
+	stunLogger := log.New()
+	stunLogger.SetOutput(log.StandardLogger().Out)
+	stunLogger.SetLevel(level)
+	// Use the formatter package to set up formatter, ReportCaller, and context hook
+	formatter.SetTextFormatter(stunLogger)
+
+	logger := stunLogger.WithField("component", "stun-server")
+	logger.Infof("STUN server log level set to: %s", level.String())
+
+	return &Server{
+		conns:    conns,
+		logger:   logger,
+		logLevel: level,
+	}
+}
+
+// Listen starts the STUN server and blocks until the server is shut down.
+// Returns ErrServerClosed when shut down gracefully via Shutdown.
+// Returns ErrNoListeners if no UDP connections were provided.
+func (s *Server) Listen() error {
+	if len(s.conns) == 0 {
+		return ErrNoListeners
+	}
+
+	// Start a read loop for each listener
+	for _, conn := range s.conns {
+		s.logger.Infof("STUN server listening on %s", conn.LocalAddr())
+		s.wg.Add(1)
+		go s.readLoop(conn)
+	}
+
+	s.wg.Wait()
+	return ErrServerClosed
+}
+
+// readLoop continuously reads UDP packets and handles STUN requests.
+func (s *Server) readLoop(conn *net.UDPConn) {
+	defer s.wg.Done()
+	buf := make([]byte, 1500) // Standard MTU size
+	for {
+		n, remoteAddr, err := conn.ReadFromUDP(buf)
+
+		if err != nil {
+			// Check if the connection was closed externally
+			if errors.Is(err, net.ErrClosed) {
+				s.logger.Info("UDP connection closed, stopping read loop")
+				return
+			}
+			s.logger.Warnf("failed to read UDP packet: %v", err)
+			continue
+		}
+
+		// Handle packet in the same goroutine to avoid complexity
+		// STUN responses are small and fast
+		s.handlePacket(conn, buf[:n], remoteAddr)
+	}
+}
+
+// handlePacket processes a STUN request and sends a response.
+func (s *Server) handlePacket(conn *net.UDPConn, data []byte, addr *net.UDPAddr) {
+	localPort := conn.LocalAddr().(*net.UDPAddr).Port
+
+	s.logger.Debugf("[port:%d] received %d bytes from %s", localPort, len(data), addr)
+
+	// Check if it's a STUN message
+	if !stun.IsMessage(data) {
+		s.logger.Debugf("[port:%d] not a STUN message (first bytes: %x)", localPort, data[:min(len(data), 8)])
+		return
+	}
+
+	// Parse the STUN message
+	msg := &stun.Message{Raw: data}
+	if err := msg.Decode(); err != nil {
+		s.logger.Warnf("[port:%d] failed to decode STUN message from %s: %v", localPort, addr, err)
+		return
+	}
+
+	s.logger.Debugf("[port:%d] received STUN %s from %s (tx=%x)", localPort, msg.Type, addr, msg.TransactionID[:8])
+
+	// Only handle binding requests
+	if msg.Type != stun.BindingRequest {
+		s.logger.Debugf("[port:%d] ignoring non-binding request: %s", localPort, msg.Type)
+		return
+	}
+
+	// Build the response
+	response, err := stun.Build(
+		stun.NewTransactionIDSetter(msg.TransactionID),
+		stun.BindingSuccess,
+		&stun.XORMappedAddress{
+			IP:   addr.IP,
+			Port: addr.Port,
+		},
+		stun.Fingerprint,
+	)
+	if err != nil {
+		s.logger.Errorf("[port:%d] failed to build STUN response: %v", localPort, err)
+		return
+	}
+
+	// Send the response on the same connection it was received on
+	n, err := conn.WriteToUDP(response.Raw, addr)
+	if err != nil {
+		s.logger.Errorf("[port:%d] failed to send STUN response to %s: %v", localPort, addr, err)
+		return
+	}
+
+	s.logger.Debugf("[port:%d] sent STUN BindingSuccess to %s (%d bytes) with XORMappedAddress %s:%d", localPort, addr, n, addr.IP, addr.Port)
+}
+
+// Shutdown gracefully stops the STUN server.
+func (s *Server) Shutdown() error {
+	s.logger.Info("shutting down STUN server")
+
+	var merr *multierror.Error
+
+	for _, conn := range s.conns {
+		if err := conn.Close(); err != nil && !errors.Is(err, net.ErrClosed) {
+			merr = multierror.Append(merr, fmt.Errorf("close STUN UDP connection: %w", err))
+		}
+	}
+
+	// Wait for all readLoops to finish
+	s.wg.Wait()
+	return nberrors.FormatErrorOrNil(merr)
+}

stun/server_test.go

@@ -0,0 +1,479 @@
+package stun
+
+import (
+	"errors"
+	"fmt"
+	"math/rand"
+	"net"
+	"os"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/pion/stun/v3"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// createTestServer creates a STUN server listening on a random port for testing.
+// Returns the server, the listener connection (caller must close), and the server address.
+func createTestServer(t testing.TB) (*Server, *net.UDPConn, *net.UDPAddr) {
+	t.Helper()
+	conn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 0})
+	require.NoError(t, err)
+	server := NewServer([]*net.UDPConn{conn}, "debug")
+	return server, conn, conn.LocalAddr().(*net.UDPAddr)
+}
+
+// waitForServerReady polls the server with STUN binding requests until it responds.
+// This avoids flaky tests on slow CI machines that relied on time.Sleep.
+func waitForServerReady(t testing.TB, serverAddr *net.UDPAddr, timeout time.Duration) {
+	t.Helper()
+	deadline := time.Now().Add(timeout)
+	retryInterval := 10 * time.Millisecond
+
+	clientConn, err := net.DialUDP("udp", nil, serverAddr)
+	require.NoError(t, err)
+	defer clientConn.Close()
+
+	buf := make([]byte, 1500)
+	for time.Now().Before(deadline) {
+		msg, err := stun.Build(stun.TransactionID, stun.BindingRequest)
+		require.NoError(t, err)
+
+		_, err = clientConn.Write(msg.Raw)
+		require.NoError(t, err)
+
+		_ = clientConn.SetReadDeadline(time.Now().Add(retryInterval))
+		n, err := clientConn.Read(buf)
+		if err != nil {
+			// Timeout or other error, retry
+			continue
+		}
+
+		response := &stun.Message{Raw: buf[:n]}
+		if err := response.Decode(); err != nil {
+			continue
+		}
+
+		if response.Type == stun.BindingSuccess {
+			return // Server is ready
+		}
+	}
+
+	t.Fatalf("server did not become ready within %v", timeout)
+}
+
+func TestServer_BindingRequest(t *testing.T) {
+	// Start the STUN server on a random port
+	server, listener, serverAddr := createTestServer(t)
+
+	// Start server in background
+	serverErrCh := make(chan error, 1)
+	go func() {
+		serverErrCh <- server.Listen()
+	}()
+
+	// Wait for server to be ready
+	waitForServerReady(t, serverAddr, 2*time.Second)
+
+	// Create a UDP client
+	clientConn, err := net.DialUDP("udp", nil, serverAddr)
+	require.NoError(t, err)
+	defer clientConn.Close()
+
+	// Build a STUN binding request
+	msg, err := stun.Build(stun.TransactionID, stun.BindingRequest)
+	require.NoError(t, err)
+
+	// Send the request
+	_, err = clientConn.Write(msg.Raw)
+	require.NoError(t, err)
+
+	// Read the response
+	buf := make([]byte, 1500)
+	_ = clientConn.SetReadDeadline(time.Now().Add(2 * time.Second))
+	n, err := clientConn.Read(buf)
+	require.NoError(t, err)
+
+	// Parse the response
+	response := &stun.Message{Raw: buf[:n]}
+	err = response.Decode()
+	require.NoError(t, err)
+
+	// Verify it's a binding success
+	assert.Equal(t, stun.BindingSuccess, response.Type)
+
+	// Extract the XOR-MAPPED-ADDRESS
+	var xorAddr stun.XORMappedAddress
+	err = xorAddr.GetFrom(response)
+	require.NoError(t, err)
+
+	// Verify the address matches our client's local address
+	clientAddr := clientConn.LocalAddr().(*net.UDPAddr)
+	assert.Equal(t, clientAddr.IP.String(), xorAddr.IP.String())
+	assert.Equal(t, clientAddr.Port, xorAddr.Port)
+
+	// Close listener first to unblock readLoop, then shutdown
+	_ = listener.Close()
+	err = server.Shutdown()
+	require.NoError(t, err)
+}
+
+func TestServer_IgnoresNonSTUNPackets(t *testing.T) {
+	server, listener, serverAddr := createTestServer(t)
+
+	go func() {
+		_ = server.Listen()
+	}()
+
+	waitForServerReady(t, serverAddr, 2*time.Second)
+
+	clientConn, err := net.DialUDP("udp", nil, serverAddr)
+	require.NoError(t, err)
+	defer clientConn.Close()
+
+	// Send non-STUN data
+	_, err = clientConn.Write([]byte("hello world"))
+	require.NoError(t, err)
+
+	// Try to read response (should timeout since server ignores non-STUN)
+	buf := make([]byte, 1500)
+	_ = clientConn.SetReadDeadline(time.Now().Add(200 * time.Millisecond))
+	_, err = clientConn.Read(buf)
+	assert.Error(t, err) // Should be a timeout error
+
+	// Close listener first to unblock readLoop, then shutdown
+	_ = listener.Close()
+	_ = server.Shutdown()
+}
+
+func TestServer_Shutdown(t *testing.T) {
+	server, listener, serverAddr := createTestServer(t)
+
+	serverDone := make(chan struct{})
+	go func() {
+		err := server.Listen()
+		assert.True(t, errors.Is(err, ErrServerClosed))
+		close(serverDone)
+	}()
+
+	waitForServerReady(t, serverAddr, 2*time.Second)
+
+	// Close listener first to unblock readLoop, then shutdown
+	_ = listener.Close()
+
+	err := server.Shutdown()
+	require.NoError(t, err)
+
+	// Wait for Listen to return
+	select {
+	case <-serverDone:
+		// Success
+	case <-time.After(3 * time.Second):
+		t.Fatal("server did not shutdown in time")
+	}
+}
+
+func TestServer_MultipleRequests(t *testing.T) {
+	server, listener, serverAddr := createTestServer(t)
+
+	go func() {
+		_ = server.Listen()
+	}()
+
+	waitForServerReady(t, serverAddr, 2*time.Second)
+
+	// Create multiple clients and send requests
+	for i := 0; i < 5; i++ {
+		func() {
+			clientConn, err := net.DialUDP("udp", nil, serverAddr)
+			require.NoError(t, err)
+			defer clientConn.Close()
+
+			msg, err := stun.Build(stun.TransactionID, stun.BindingRequest)
+			require.NoError(t, err)
+
+			_, err = clientConn.Write(msg.Raw)
+			require.NoError(t, err)
+
+			buf := make([]byte, 1500)
+			_ = clientConn.SetReadDeadline(time.Now().Add(2 * time.Second))
+			n, err := clientConn.Read(buf)
+			require.NoError(t, err)
+
+			response := &stun.Message{Raw: buf[:n]}
+			err = response.Decode()
+			require.NoError(t, err)
+
+			assert.Equal(t, stun.BindingSuccess, response.Type)
+		}()
+	}
+
+	// Close listener first to unblock readLoop, then shutdown
+	_ = listener.Close()
+	_ = server.Shutdown()
+}
+
+func TestServer_ConcurrentClients(t *testing.T) {
+	numClients := 100
+	requestsPerClient := 5
+	maxStartDelay := 100 * time.Millisecond   // Random delay before client starts
+	maxRequestDelay := 500 * time.Millisecond // Random delay between requests
+
+	// Remote server to test against via env var STUN_TEST_SERVER
+	// Example: STUN_TEST_SERVER=example.netbird.io:3478 go test -v ./stun/... -run ConcurrentClients
+	remoteServer := os.Getenv("STUN_TEST_SERVER")
+
+	var serverAddr *net.UDPAddr
+	var server *Server
+	var listener *net.UDPConn
+
+	if remoteServer != "" {
+		// Use remote server
+		var err error
+		serverAddr, err = net.ResolveUDPAddr("udp", remoteServer)
+		require.NoError(t, err)
+		t.Logf("Testing against remote server: %s", remoteServer)
+	} else {
+		// Start local server
+		server, listener, serverAddr = createTestServer(t)
+		go func() {
+			_ = server.Listen()
+		}()
+		waitForServerReady(t, serverAddr, 2*time.Second)
+		t.Logf("Testing against local server: %s", serverAddr)
+	}
+
+	var wg sync.WaitGroup
+	errorz := make(chan error, numClients*requestsPerClient)
+	successCount := make(chan int, numClients)
+
+	startTime := time.Now()
+
+	for i := 0; i < numClients; i++ {
+		wg.Add(1)
+		go func(clientID int) {
+			defer wg.Done()
+
+			// Random delay before starting
+			time.Sleep(time.Duration(rand.Int63n(int64(maxStartDelay))))
+
+			clientConn, err := net.DialUDP("udp", nil, serverAddr)
+			if err != nil {
+				errorz <- fmt.Errorf("client %d: failed to dial: %w", clientID, err)
+				return
+			}
+			defer clientConn.Close()
+
+			success := 0
+			for j := 0; j < requestsPerClient; j++ {
+				// Random delay between requests
+				if j > 0 {
+					time.Sleep(time.Duration(rand.Int63n(int64(maxRequestDelay))))
+				}
+
+				msg, err := stun.Build(stun.TransactionID, stun.BindingRequest)
+				if err != nil {
+					errorz <- fmt.Errorf("client %d: failed to build request: %w", clientID, err)
+					continue
+				}
+
+				_, err = clientConn.Write(msg.Raw)
+				if err != nil {
+					errorz <- fmt.Errorf("client %d: failed to write: %w", clientID, err)
+					continue
+				}
+
+				buf := make([]byte, 1500)
+				_ = clientConn.SetReadDeadline(time.Now().Add(5 * time.Second))
+				n, err := clientConn.Read(buf)
+				if err != nil {
+					errorz <- fmt.Errorf("client %d: failed to read: %w", clientID, err)
+					continue
+				}
+
+				response := &stun.Message{Raw: buf[:n]}
+				if err := response.Decode(); err != nil {
+					errorz <- fmt.Errorf("client %d: failed to decode: %w", clientID, err)
+					continue
+				}
+
+				if response.Type != stun.BindingSuccess {
+					errorz <- fmt.Errorf("client %d: unexpected response type: %s", clientID, response.Type)
+					continue
+				}
+
+				success++
+			}
+			successCount <- success
+		}(i)
+	}
+
+	wg.Wait()
+	close(errorz)
+	close(successCount)
+
+	elapsed := time.Since(startTime)
+
+	totalSuccess := 0
+	for count := range successCount {
+		totalSuccess += count
+	}
+
+	var errs []error
+	for err := range errorz {
+		errs = append(errs, err)
+	}
+
+	totalRequests := numClients * requestsPerClient
+	t.Logf("Completed %d/%d requests in %v (%.2f req/s)",
+		totalSuccess, totalRequests, elapsed,
+		float64(totalSuccess)/elapsed.Seconds())
+
+	if len(errs) > 0 {
+		t.Logf("Errors (%d):", len(errs))
+		for i, err := range errs {
+			if i < 10 { // Only show first 10 errors
+				t.Logf("  - %v", err)
+			}
+		}
+	}
+
+	// Require at least 95% success rate
+	successRate := float64(totalSuccess) / float64(totalRequests)
+	require.GreaterOrEqual(t, successRate, 0.95, "success rate too low: %.2f%%", successRate*100)
+
+	// Cleanup local server if used
+	if server != nil {
+		// Close listener first to unblock readLoop, then shutdown
+		_ = listener.Close()
+		_ = server.Shutdown()
+	}
+}
+
+func TestServer_MultiplePorts(t *testing.T) {
+	// Create listeners on two random ports
+	conn1, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 0})
+	require.NoError(t, err)
+	conn2, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 0})
+	require.NoError(t, err)
+
+	addr1 := conn1.LocalAddr().(*net.UDPAddr)
+	addr2 := conn2.LocalAddr().(*net.UDPAddr)
+
+	server := NewServer([]*net.UDPConn{conn1, conn2}, "debug")
+
+	go func() {
+		_ = server.Listen()
+	}()
+
+	// Wait for server to be ready (checking first port is sufficient)
+	waitForServerReady(t, addr1, 2*time.Second)
+
+	// Test requests on both ports
+	for _, serverAddr := range []*net.UDPAddr{addr1, addr2} {
+		func() {
+			clientConn, err := net.DialUDP("udp", nil, serverAddr)
+			require.NoError(t, err)
+			defer clientConn.Close()
+
+			msg, err := stun.Build(stun.TransactionID, stun.BindingRequest)
+			require.NoError(t, err)
+
+			_, err = clientConn.Write(msg.Raw)
+			require.NoError(t, err)
+
+			buf := make([]byte, 1500)
+			_ = clientConn.SetReadDeadline(time.Now().Add(2 * time.Second))
+			n, err := clientConn.Read(buf)
+			require.NoError(t, err)
+
+			response := &stun.Message{Raw: buf[:n]}
+			err = response.Decode()
+			require.NoError(t, err)
+
+			assert.Equal(t, stun.BindingSuccess, response.Type)
+
+			var xorAddr stun.XORMappedAddress
+			err = xorAddr.GetFrom(response)
+			require.NoError(t, err)
+
+			clientAddr := clientConn.LocalAddr().(*net.UDPAddr)
+			assert.Equal(t, clientAddr.Port, xorAddr.Port)
+		}()
+	}
+
+	// Close listeners first to unblock readLoops, then shutdown
+	_ = conn1.Close()
+	_ = conn2.Close()
+	_ = server.Shutdown()
+}
+
+// BenchmarkSTUNServer benchmarks the STUN server with concurrent clients
+func BenchmarkSTUNServer(b *testing.B) {
+	server, listener, serverAddr := createTestServer(b)
+
+	go func() {
+		_ = server.Listen()
+	}()
+
+	waitForServerReady(b, serverAddr, 2*time.Second)
+
+	// Capture first error atomically - b.Fatal cannot be called from worker goroutines
+	var firstErr atomic.Pointer[error]
+	setErr := func(err error) {
+		firstErr.CompareAndSwap(nil, &err)
+	}
+
+	b.ResetTimer()
+	b.RunParallel(func(pb *testing.PB) {
+		// Stop work if an error has occurred
+		if firstErr.Load() != nil {
+			return
+		}
+
+		clientConn, err := net.DialUDP("udp", nil, serverAddr)
+		if err != nil {
+			setErr(err)
+			return
+		}
+		defer clientConn.Close()
+
+		buf := make([]byte, 1500)
+
+		for pb.Next() {
+			if firstErr.Load() != nil {
+				return
+			}
+
+			msg, _ := stun.Build(stun.TransactionID, stun.BindingRequest)
+			_, _ = clientConn.Write(msg.Raw)
+
+			_ = clientConn.SetReadDeadline(time.Now().Add(2 * time.Second))
+			n, err := clientConn.Read(buf)
+			if err != nil {
+				setErr(err)
+				return
+			}
+
+			response := &stun.Message{Raw: buf[:n]}
+			if err := response.Decode(); err != nil {
+				setErr(err)
+				return
+			}
+		}
+	})
+
+	b.StopTimer()
+
+	// Fail after RunParallel completes
+	if errPtr := firstErr.Load(); errPtr != nil {
+		b.Fatal(*errPtr)
+	}
+
+	// Close listener first to unblock readLoop, then shutdown
+	_ = listener.Close()
+	_ = server.Shutdown()
+}