Fix TURN issue

client/internal/engine.go

@@ -219,6 +219,7 @@ func (e *Engine) Start() error {
 	log.Infof("NetBird Engine started listening on WireGuard port %d", *port)
 
 	e.routeManager = routemanager.NewManager(e.ctx, e.config.WgPrivateKey.PublicKey().String(), e.wgInterface, e.statusRecorder)
+	e.config.WgPort = *port
 
 	e.receiveSignalEvents()
 	e.receiveManagementEvents()

client/internal/peer/conn.go

@@ -345,8 +345,15 @@ func (conn *Conn) startProxy(remoteConn net.Conn, remoteWgPort int) error {
 
 	peerState := nbStatus.PeerState{PubKey: conn.config.Key}
 
-	p := proxy.NewNoProxy(conn.config.ProxyConfig, remoteWgPort)
-	peerState.Direct = true
+	var p proxy.Proxy
+	if pair.Local.Type() == ice.CandidateTypeRelay || pair.Remote.Type() == ice.CandidateTypeRelay {
+		p = proxy.NewWireguardProxy(conn.config.ProxyConfig)
+		peerState.Direct = false
+	} else {
+		p = proxy.NewNoProxy(conn.config.ProxyConfig, remoteWgPort)
+		peerState.Direct = true
+	}
+
 	conn.proxy = p
 	err = p.Start(remoteConn)
 	if err != nil {

iface/bind.go

@@ -200,12 +200,16 @@ func (b *ICEBind) Send(buff []byte, endpoint conn.Endpoint) error {
 
 	b.mu.Lock()
 	co := b.endpointMap[(*net.UDPAddr)(nend).String()]
-	b.mu.Unlock()
+
 	if co == nil {
 		// todo proper handling
+		// todo without it relayed connections didn't work. investigate
 		log.Warnf("conn not found for endpoint %s", (*net.UDPAddr)(nend).String())
-		return conn.ErrWrongEndpointType
+		co = b.sharedConn
+		b.endpointMap[(*net.UDPAddr)(nend).String()] = b.sharedConn
+		//return conn.ErrWrongEndpointType
 	}
+	b.mu.Unlock()
 
 	_, err := co.WriteTo(buff, (*net.UDPAddr)(nend))
 	return err