diff --git a/core/config.go b/core/config.go
index ed8783a..54a0895 100644
--- a/core/config.go
+++ b/core/config.go
@@ -3,6 +3,7 @@ package openp2p
 import (
 	"encoding/json"
 	"flag"
+	"fmt"
 	"os"
 	"strconv"
 	"strings"
@@ -28,6 +29,7 @@ type AppConfig struct {
 	ForceRelay       int // default:0 disable;1 enable
 	Enabled          int // default:1
 	// runtime info
+	relayMode        string // private|public
 	peerVersion      string
 	peerToken        uint64
 	peerNatType      int
@@ -64,6 +66,13 @@ func (c *AppConfig) ID() uint64 {
 	return uint64(c.SrcPort)*10 + 1
 }
 
+func (c *AppConfig) LogPeerNode() string {
+	if c.relayMode == "public" { // memapp
+		return fmt.Sprintf("%d", NodeNameToID(c.PeerNode))
+	}
+	return c.PeerNode
+}
+
 type Config struct {
 	Network NetworkConfig `json:"network"`
 	Apps    []*AppConfig  `json:"apps"`
@@ -147,7 +156,7 @@ func (c *Config) retryApp(peerNode string) {
 	GNetwork.apps.Range(func(id, i interface{}) bool {
 		app := i.(*p2pApp)
 		if app.config.PeerNode == peerNode {
-			gLog.Println(LvDEBUG, "retry app ", peerNode)
+			gLog.Println(LvDEBUG, "retry app ", app.config.LogPeerNode())
 			app.config.retryNum = 0
 			app.config.nextRetryTime = time.Now()
 			app.retryRelayNum = 0
@@ -157,7 +166,7 @@ func (c *Config) retryApp(peerNode string) {
 			app.hbMtx.Unlock()
 		}
 		if app.config.RelayNode == peerNode {
-			gLog.Println(LvDEBUG, "retry app ", peerNode)
+			gLog.Println(LvDEBUG, "retry app ", app.config.LogPeerNode())
 			app.retryRelayNum = 0
 			app.nextRetryRelayTime = time.Now()
 			app.hbMtx.Lock()
@@ -171,7 +180,7 @@ func (c *Config) retryApp(peerNode string) {
 func (c *Config) retryAllApp() {
 	GNetwork.apps.Range(func(id, i interface{}) bool {
 		app := i.(*p2pApp)
-		gLog.Println(LvDEBUG, "retry app ", app.config.PeerNode)
+		gLog.Println(LvDEBUG, "retry app ", app.config.LogPeerNode())
 		app.config.retryNum = 0
 		app.config.nextRetryTime = time.Now()
 		app.retryRelayNum = 0
@@ -189,7 +198,7 @@ func (c *Config) retryAllMemApp() {
 		if app.config.SrcPort != 0 {
 			return true
 		}
-		gLog.Println(LvDEBUG, "retry app ", app.config.PeerNode)
+		gLog.Println(LvDEBUG, "retry app ", app.config.LogPeerNode())
 		app.config.retryNum = 0
 		app.config.nextRetryTime = time.Now()
 		app.retryRelayNum = 0
@@ -246,6 +255,9 @@ func (c *Config) delete(app AppConfig) {
 func (c *Config) save() {
 	// c.mtx.Lock()
 	// defer c.mtx.Unlock()  // internal call
+	if c.Network.Token == 0 {
+		return
+	}
 	data, _ := json.MarshalIndent(c, "", "  ")
 	err := os.WriteFile("config.json", data, 0644)
 	if err != nil {
@@ -256,6 +268,9 @@ func (c *Config) save() {
 func (c *Config) saveCache() {
 	// c.mtx.Lock()
 	// defer c.mtx.Unlock()  // internal call
+	if c.Network.Token == 0 {
+		return
+	}
 	data, _ := json.MarshalIndent(c, "", "  ")
 	err := os.WriteFile("config.json0", data, 0644)
 	if err != nil {
diff --git a/core/errorcode.go b/core/errorcode.go
index 6e89554..cadc547 100644
--- a/core/errorcode.go
+++ b/core/errorcode.go
@@ -29,4 +29,5 @@ var (
 	ErrPeerConnectRelay      = errors.New("peer connect relayNode error")
 	ErrBuildTunnelBusy       = errors.New("build tunnel busy")
 	ErrMemAppTunnelNotFound  = errors.New("memapp tunnel not found")
+	ErrRemoteServiceUnable   = errors.New("remote service unable")
 )
diff --git a/core/handlepush.go b/core/handlepush.go
index 7e2a021..0cddccc 100644
--- a/core/handlepush.go
+++ b/core/handlepush.go
@@ -5,6 +5,7 @@ import (
 	"encoding/binary"
 	"encoding/json"
 	"fmt"
+	"net"
 	"os"
 	"path/filepath"
 	"reflect"
@@ -44,6 +45,7 @@ func handlePush(subType uint16, msg []byte) error {
 		config := AppConfig{}
 		config.PeerNode = req.RelayName
 		config.peerToken = req.RelayToken
+		config.relayMode = req.RelayMode
 		go func(r AddRelayTunnelReq) {
 			t, errDt := GNetwork.addDirectTunnel(config, 0)
 			if errDt == nil {
@@ -142,6 +144,8 @@ func handlePush(subType uint16, msg []byte) error {
 		err = handleLog(msg)
 	case MsgPushReportGoroutine:
 		err = handleReportGoroutine()
+	case MsgPushCheckRemoteService:
+		err = handleCheckRemoteService(msg)
 	case MsgPushEditApp:
 		err = handleEditApp(msg)
 	case MsgPushEditNode:
@@ -458,3 +462,21 @@ func handleReportGoroutine() (err error) {
 	stackLen := runtime.Stack(buf, true)
 	return GNetwork.write(MsgReport, MsgPushReportLog, string(buf[:stackLen]))
 }
+
+func handleCheckRemoteService(msg []byte) (err error) {
+	gLog.Println(LvDEBUG, "handleCheckRemoteService")
+	req := CheckRemoteService{}
+	if err = json.Unmarshal(msg[openP2PHeaderSize:], &req); err != nil {
+		gLog.Printf(LvERROR, "wrong %v:%s  %s", reflect.TypeOf(req), err, string(msg[openP2PHeaderSize:]))
+		return err
+	}
+	rsp := PushRsp{Error: 0}
+	conn, err := net.DialTimeout("tcp", fmt.Sprintf("%s:%d", req.Host, req.Port), time.Second*3)
+	if err != nil {
+		rsp.Error = 1
+		rsp.Detail = ErrRemoteServiceUnable.Error()
+	} else {
+		conn.Close()
+	}
+	return GNetwork.write(MsgReport, MsgReportResponse, rsp)
+}
diff --git a/core/p2papp.go b/core/p2papp.go
index 63276e4..e375deb 100644
--- a/core/p2papp.go
+++ b/core/p2papp.go
@@ -138,7 +138,7 @@ func (app *p2pApp) checkDirectTunnel() error {
 		app.config.retryNum = 1
 	}
 	if app.config.retryNum > 0 { // first time not show reconnect log
-		gLog.Printf(LvINFO, "detect app %s appid:%d disconnect, reconnecting the %d times...", app.config.PeerNode, app.id, app.config.retryNum)
+		gLog.Printf(LvINFO, "detect app %s appid:%d disconnect, reconnecting the %d times...", app.config.LogPeerNode(), app.id, app.config.retryNum)
 	}
 	app.config.retryNum++
 	app.config.retryTime = time.Now()
@@ -149,7 +149,7 @@ func (app *p2pApp) checkDirectTunnel() error {
 		app.config.errMsg = err.Error()
 		if err == ErrPeerOffline && app.config.retryNum > 2 { // stop retry, waiting for online
 			app.config.retryNum = retryLimit
-			gLog.Printf(LvINFO, " %s offline, it will auto reconnect when peer node online", app.config.PeerNode)
+			gLog.Printf(LvINFO, " %s offline, it will auto reconnect when peer node online", app.config.LogPeerNode())
 		}
 		if err == ErrBuildTunnelBusy {
 			app.config.retryNum--
@@ -174,7 +174,7 @@ func (app *p2pApp) buildDirectTunnel() error {
 	pn := GNetwork
 	initErr := pn.requestPeerInfo(&app.config)
 	if initErr != nil {
-		gLog.Printf(LvERROR, "%s init error:%s", app.config.PeerNode, initErr)
+		gLog.Printf(LvERROR, "%s init error:%s", app.config.LogPeerNode(), initErr)
 		return initErr
 	}
 	t, err = pn.addDirectTunnel(app.config, 0)
@@ -212,7 +212,7 @@ func (app *p2pApp) buildDirectTunnel() error {
 		AppID:  app.id,
 		AppKey: app.key,
 	}
-	gLog.Printf(LvDEBUG, "sync appkey direct to %s", app.config.PeerNode)
+	gLog.Printf(LvDEBUG, "sync appkey direct to %s", app.config.LogPeerNode())
 	pn.push(app.config.PeerNode, MsgPushAPPKey, &syncKeyReq)
 	app.setDirectTunnel(t)
 
@@ -220,7 +220,7 @@ func (app *p2pApp) buildDirectTunnel() error {
 	if app.config.SrcPort == 0 {
 		req := ServerSideSaveMemApp{From: gConf.Network.Node, Node: gConf.Network.Node, TunnelID: t.id, RelayTunnelID: 0, AppID: app.id}
 		pn.push(app.config.PeerNode, MsgPushServerSideSaveMemApp, &req)
-		gLog.Printf(LvDEBUG, "push %s ServerSideSaveMemApp: %s", app.config.PeerNode, prettyJson(req))
+		gLog.Printf(LvDEBUG, "push %s ServerSideSaveMemApp: %s", app.config.LogPeerNode(), prettyJson(req))
 	}
 	gLog.Printf(LvDEBUG, "%s use tunnel %d", app.config.AppName, t.id)
 	return nil
@@ -244,7 +244,7 @@ func (app *p2pApp) checkRelayTunnel() error {
 		app.retryRelayNum = 1
 	}
 	if app.retryRelayNum > 0 { // first time not show reconnect log
-		gLog.Printf(LvINFO, "detect app %s appid:%d relay disconnect, reconnecting the %d times...", app.config.PeerNode, app.id, app.retryRelayNum)
+		gLog.Printf(LvINFO, "detect app %s appid:%d relay disconnect, reconnecting the %d times...", app.config.LogPeerNode(), app.id, app.retryRelayNum)
 	}
 	app.setRelayTunnel(nil) // reset relayTunnel
 	app.retryRelayNum++
@@ -256,7 +256,7 @@ func (app *p2pApp) checkRelayTunnel() error {
 		app.errMsg = err.Error()
 		if err == ErrPeerOffline && app.retryRelayNum > 2 { // stop retry, waiting for online
 			app.retryRelayNum = retryLimit
-			gLog.Printf(LvINFO, " %s offline, it will auto reconnect when peer node online", app.config.PeerNode)
+			gLog.Printf(LvINFO, " %s offline, it will auto reconnect when peer node online", app.config.LogPeerNode())
 		}
 	}
 	if app.Tunnel() != nil {
@@ -282,7 +282,7 @@ func (app *p2pApp) buildRelayTunnel() error {
 	config := app.config
 	initErr := pn.requestPeerInfo(&config)
 	if initErr != nil {
-		gLog.Printf(LvERROR, "%s init error:%s", config.PeerNode, initErr)
+		gLog.Printf(LvERROR, "%s init error:%s", config.LogPeerNode(), initErr)
 		return initErr
 	}
 
@@ -318,7 +318,7 @@ func (app *p2pApp) buildRelayTunnel() error {
 		AppID:  app.id,
 		AppKey: app.key,
 	}
-	gLog.Printf(LvDEBUG, "sync appkey relay to %s", config.PeerNode)
+	gLog.Printf(LvDEBUG, "sync appkey relay to %s", config.LogPeerNode())
 	pn.push(config.PeerNode, MsgPushAPPKey, &syncKeyReq)
 	app.setRelayTunnelID(rtid)
 	app.setRelayTunnel(t)
@@ -330,7 +330,7 @@ func (app *p2pApp) buildRelayTunnel() error {
 	if config.SrcPort == 0 {
 		req := ServerSideSaveMemApp{From: gConf.Network.Node, Node: relayNode, TunnelID: rtid, RelayTunnelID: t.id, AppID: app.id, RelayMode: relayMode}
 		pn.push(config.PeerNode, MsgPushServerSideSaveMemApp, &req)
-		gLog.Printf(LvDEBUG, "push %s relay ServerSideSaveMemApp: %s", config.PeerNode, prettyJson(req))
+		gLog.Printf(LvDEBUG, "push %s relay ServerSideSaveMemApp: %s", config.LogPeerNode(), prettyJson(req))
 	}
 	gLog.Printf(LvDEBUG, "%s use tunnel %d", app.config.AppName, t.id)
 	return nil
@@ -594,8 +594,8 @@ func (app *p2pApp) close() {
 func (app *p2pApp) relayHeartbeatLoop() {
 	app.wg.Add(1)
 	defer app.wg.Done()
-	gLog.Printf(LvDEBUG, "%s appid:%d relayHeartbeat to rtid:%d start", app.config.PeerNode, app.id, app.rtid)
-	defer gLog.Printf(LvDEBUG, "%s appid:%d relayHeartbeat to rtid%d end", app.config.PeerNode, app.id, app.rtid)
+	gLog.Printf(LvDEBUG, "%s appid:%d relayHeartbeat to rtid:%d start", app.config.LogPeerNode(), app.id, app.rtid)
+	defer gLog.Printf(LvDEBUG, "%s appid:%d relayHeartbeat to rtid%d end", app.config.LogPeerNode(), app.id, app.rtid)
 
 	for app.running {
 		if app.RelayTunnel() == nil || !app.RelayTunnel().isRuning() {
@@ -606,11 +606,11 @@ func (app *p2pApp) relayHeartbeatLoop() {
 			AppID: app.id}
 		err := app.RelayTunnel().WriteMessage(app.rtid, MsgP2P, MsgRelayHeartbeat, &req)
 		if err != nil {
-			gLog.Printf(LvERROR, "%s appid:%d rtid:%d write relay tunnel heartbeat error %s", app.config.PeerNode, app.id, app.rtid, err)
+			gLog.Printf(LvERROR, "%s appid:%d rtid:%d write relay tunnel heartbeat error %s", app.config.LogPeerNode(), app.id, app.rtid, err)
 			return
 		}
 		// TODO: debug relay heartbeat
-		gLog.Printf(LvDEBUG, "%s appid:%d rtid:%d write relay tunnel heartbeat ok", app.config.PeerNode, app.id, app.rtid)
+		gLog.Printf(LvDEBUG, "%s appid:%d rtid:%d write relay tunnel heartbeat ok", app.config.LogPeerNode(), app.id, app.rtid)
 		time.Sleep(TunnelHeartbeatTime)
 	}
 }
diff --git a/core/p2pnetwork.go b/core/p2pnetwork.go
index 5ac4241..79b3cb1 100644
--- a/core/p2pnetwork.go
+++ b/core/p2pnetwork.go
@@ -125,7 +125,7 @@ func (pn *P2PNetwork) run() {
 			}
 			gConf.retryAllApp()
 		case t := <-pn.tunnelCloseCh:
-			gLog.Printf(LvDEBUG, "got tunnelCloseCh %s", t.config.PeerNode)
+			gLog.Printf(LvDEBUG, "got tunnelCloseCh %s", t.config.LogPeerNode())
 			pn.apps.Range(func(id, i interface{}) bool {
 				app := i.(*p2pApp)
 				if app.DirectTunnel() == t {
@@ -195,12 +195,12 @@ func (pn *P2PNetwork) autorunApp() {
 }
 
 func (pn *P2PNetwork) addRelayTunnel(config AppConfig) (*P2PTunnel, uint64, string, error) {
-	gLog.Printf(LvINFO, "addRelayTunnel to %s start", config.PeerNode)
-	defer gLog.Printf(LvINFO, "addRelayTunnel to %s end", config.PeerNode)
+	gLog.Printf(LvINFO, "addRelayTunnel to %s start", config.LogPeerNode())
+	defer gLog.Printf(LvINFO, "addRelayTunnel to %s end", config.LogPeerNode())
 	relayConfig := AppConfig{
 		PeerNode:  config.RelayNode,
-		peerToken: config.peerToken}
-	relayMode := "private"
+		peerToken: config.peerToken,
+		relayMode: "private"}
 	if relayConfig.PeerNode == "" {
 		// find existing relay tunnel
 		pn.apps.Range(func(id, i interface{}) bool {
@@ -212,7 +212,7 @@ func (pn *P2PNetwork) addRelayTunnel(config AppConfig) (*P2PTunnel, uint64, stri
 				return true
 			}
 			relayConfig.PeerNode = app.RelayTunnel().config.PeerNode
-			gLog.Printf(LvDEBUG, "found existing relay tunnel %s", relayConfig.PeerNode)
+			gLog.Printf(LvDEBUG, "found existing relay tunnel %s", relayConfig.LogPeerNode())
 			return false
 		})
 		if relayConfig.PeerNode == "" { // request relay node
@@ -231,11 +231,11 @@ func (pn *P2PNetwork) addRelayTunnel(config AppConfig) (*P2PTunnel, uint64, stri
 				gLog.Printf(LvERROR, "MsgRelayNodeReq error")
 				return nil, 0, "", errors.New("MsgRelayNodeReq error")
 			}
-			gLog.Printf(LvDEBUG, "got relay node:%s", rsp.RelayName)
+			gLog.Printf(LvDEBUG, "got relay node:%s", relayConfig.LogPeerNode())
 
 			relayConfig.PeerNode = rsp.RelayName
 			relayConfig.peerToken = rsp.RelayToken
-			relayMode = rsp.Mode
+			relayConfig.relayMode = rsp.Mode
 		}
 
 	}
@@ -250,10 +250,10 @@ func (pn *P2PNetwork) addRelayTunnel(config AppConfig) (*P2PTunnel, uint64, stri
 		From:          gConf.Network.Node,
 		RelayName:     relayConfig.PeerNode,
 		RelayToken:    relayConfig.peerToken,
-		RelayMode:     relayMode,
+		RelayMode:     relayConfig.relayMode,
 		RelayTunnelID: t.id,
 	}
-	gLog.Printf(LvDEBUG, "push %s the relay node(%s)", config.PeerNode, relayConfig.PeerNode)
+	gLog.Printf(LvDEBUG, "push %s the relay node(%s)", config.LogPeerNode(), relayConfig.LogPeerNode())
 	pn.push(config.PeerNode, MsgPushAddRelayTunnelReq, &req)
 
 	// wait relay ready
@@ -267,13 +267,13 @@ func (pn *P2PNetwork) addRelayTunnel(config AppConfig) (*P2PTunnel, uint64, stri
 		gLog.Println(LvDEBUG, ErrPeerConnectRelay)
 		return nil, 0, "", ErrPeerConnectRelay
 	}
-	return t, rspID.ID, relayMode, err
+	return t, rspID.ID, relayConfig.relayMode, err
 }
 
 // use *AppConfig to save status
 func (pn *P2PNetwork) AddApp(config AppConfig) error {
-	gLog.Printf(LvINFO, "addApp %s to %s:%s:%d start", config.AppName, config.PeerNode, config.DstHost, config.DstPort)
-	defer gLog.Printf(LvINFO, "addApp %s to %s:%s:%d end", config.AppName, config.PeerNode, config.DstHost, config.DstPort)
+	gLog.Printf(LvINFO, "addApp %s to %s:%s:%d start", config.AppName, config.LogPeerNode(), config.DstHost, config.DstPort)
+	defer gLog.Printf(LvINFO, "addApp %s to %s:%s:%d end", config.AppName, config.LogPeerNode(), config.DstHost, config.DstPort)
 	if !pn.online {
 		return errors.New("P2PNetwork offline")
 	}
@@ -304,8 +304,8 @@ func (pn *P2PNetwork) AddApp(config AppConfig) error {
 }
 
 func (pn *P2PNetwork) DeleteApp(config AppConfig) {
-	gLog.Printf(LvINFO, "DeleteApp %s to %s:%s:%d start", config.AppName, config.PeerNode, config.DstHost, config.DstPort)
-	defer gLog.Printf(LvINFO, "DeleteApp %s to %s:%s:%d end", config.AppName, config.PeerNode, config.DstHost, config.DstPort)
+	gLog.Printf(LvINFO, "DeleteApp %s to %s:%s:%d start", config.AppName, config.LogPeerNode(), config.DstHost, config.DstPort)
+	defer gLog.Printf(LvINFO, "DeleteApp %s to %s:%s:%d end", config.AppName, config.LogPeerNode(), config.DstHost, config.DstPort)
 	// close the apps of this config
 	i, ok := pn.apps.Load(config.ID())
 	if ok {
@@ -339,8 +339,8 @@ func (pn *P2PNetwork) findTunnel(peerNode string) (t *P2PTunnel) {
 }
 
 func (pn *P2PNetwork) addDirectTunnel(config AppConfig, tid uint64) (t *P2PTunnel, err error) {
-	gLog.Printf(LvDEBUG, "addDirectTunnel %s%d to %s:%s:%d tid:%d start", config.Protocol, config.SrcPort, config.PeerNode, config.DstHost, config.DstPort, tid)
-	defer gLog.Printf(LvDEBUG, "addDirectTunnel %s%d to %s:%s:%d tid:%d end", config.Protocol, config.SrcPort, config.PeerNode, config.DstHost, config.DstPort, tid)
+	gLog.Printf(LvDEBUG, "addDirectTunnel %s%d to %s:%s:%d tid:%d start", config.Protocol, config.SrcPort, config.LogPeerNode(), config.DstHost, config.DstPort, tid)
+	defer gLog.Printf(LvDEBUG, "addDirectTunnel %s%d to %s:%s:%d tid:%d end", config.Protocol, config.SrcPort, config.LogPeerNode(), config.DstHost, config.DstPort, tid)
 	isClient := false
 	// client side tid=0, assign random uint64
 	if tid == 0 {
@@ -360,12 +360,12 @@ func (pn *P2PNetwork) addDirectTunnel(config AppConfig, tid uint64) (t *P2PTunne
 	// peer info
 	initErr := pn.requestPeerInfo(&config)
 	if initErr != nil {
-		gLog.Printf(LvERROR, "%s init error:%s", config.PeerNode, initErr)
+		gLog.Printf(LvERROR, "%s init error:%s", config.LogPeerNode(), initErr)
 
 		return nil, initErr
 	}
 	gLog.Printf(LvDEBUG, "config.peerNode=%s,config.peerVersion=%s,config.peerIP=%s,config.peerLanIP=%s,gConf.Network.publicIP=%s,config.peerIPv6=%s,config.hasIPv4=%d,config.hasUPNPorNATPMP=%d,gConf.Network.hasIPv4=%d,gConf.Network.hasUPNPorNATPMP=%d,config.peerNatType=%d,gConf.Network.natType=%d,",
-		config.PeerNode, config.peerVersion, config.peerIP, config.peerLanIP, gConf.Network.publicIP, config.peerIPv6, config.hasIPv4, config.hasUPNPorNATPMP, gConf.Network.hasIPv4, gConf.Network.hasUPNPorNATPMP, config.peerNatType, gConf.Network.natType)
+		config.LogPeerNode(), config.peerVersion, config.peerIP, config.peerLanIP, gConf.Network.publicIP, config.peerIPv6, config.hasIPv4, config.hasUPNPorNATPMP, gConf.Network.hasIPv4, gConf.Network.hasUPNPorNATPMP, config.peerNatType, gConf.Network.natType)
 	// try Intranet
 	if config.peerIP == gConf.Network.publicIP && compareVersion(config.peerVersion, SupportIntranetVersion) >= 0 { // old version client has no peerLanIP
 		gLog.Println(LvINFO, "try Intranet")
@@ -624,8 +624,6 @@ func (pn *P2PNetwork) handleMessage(msg []byte) {
 			gLog.Printf(LvERROR, "login error:%d, detail:%s", rsp.Error, rsp.Detail)
 			pn.running = false
 		} else {
-			gConf.Network.Token = rsp.Token
-			gConf.Network.User = rsp.User
 			gConf.setToken(rsp.Token)
 			gConf.setUser(rsp.User)
 			if len(rsp.Node) >= MinNodeNameLen {
@@ -726,7 +724,7 @@ func (pn *P2PNetwork) relay(to uint64, body []byte) error {
 }
 
 func (pn *P2PNetwork) push(to string, subType uint16, packet interface{}) error {
-	gLog.Printf(LvDEBUG, "push msgType %d to %s", subType, to)
+	// gLog.Printf(LvDEBUG, "push msgType %d to %s", subType, to)
 	if !pn.online {
 		return errors.New("client offline")
 	}
diff --git a/core/p2ptunnel.go b/core/p2ptunnel.go
index ce1c30c..3cfd918 100644
--- a/core/p2ptunnel.go
+++ b/core/p2ptunnel.go
@@ -63,7 +63,7 @@ func (t *P2PTunnel) initPort() {
 }
 
 func (t *P2PTunnel) connect() error {
-	gLog.Printf(LvDEBUG, "start p2pTunnel to %s ", t.config.PeerNode)
+	gLog.Printf(LvDEBUG, "start p2pTunnel to %s ", t.config.LogPeerNode())
 	t.tunnelServer = false
 	appKey := uint64(0)
 	req := PushConnectReq{
@@ -170,7 +170,7 @@ func (t *P2PTunnel) close() {
 		t.conn.Close()
 	}
 	t.pn.allTunnels.Delete(t.id)
-	gLog.Printf(LvINFO, "%d p2ptunnel close %s ", t.id, t.config.PeerNode)
+	gLog.Printf(LvINFO, "%d p2ptunnel close %s ", t.id, t.config.LogPeerNode())
 }
 
 func (t *P2PTunnel) start() error {
@@ -205,7 +205,7 @@ func (t *P2PTunnel) handshake() error {
 		gLog.Printf(LvDEBUG, "sleep %d ms", ts/time.Millisecond)
 		time.Sleep(ts)
 	}
-	gLog.Println(LvDEBUG, "handshake to ", t.config.PeerNode)
+	gLog.Println(LvDEBUG, "handshake to ", t.config.LogPeerNode())
 	var err error
 	if gConf.Network.natType == NATCone && t.config.peerNatType == NATCone {
 		err = handshakeC2C(t)
@@ -223,7 +223,7 @@ func (t *P2PTunnel) handshake() error {
 		gLog.Println(LvERROR, "punch handshake error:", err)
 		return err
 	}
-	gLog.Printf(LvDEBUG, "handshake to %s ok", t.config.PeerNode)
+	gLog.Printf(LvDEBUG, "handshake to %s ok", t.config.LogPeerNode())
 	return nil
 }
 
@@ -258,8 +258,8 @@ func (t *P2PTunnel) connectUnderlay() (err error) {
 }
 
 func (t *P2PTunnel) connectUnderlayUDP() (c underlay, err error) {
-	gLog.Printf(LvDEBUG, "connectUnderlayUDP %s start ", t.config.PeerNode)
-	defer gLog.Printf(LvDEBUG, "connectUnderlayUDP %s end ", t.config.PeerNode)
+	gLog.Printf(LvDEBUG, "connectUnderlayUDP %s start ", t.config.LogPeerNode())
+	defer gLog.Printf(LvDEBUG, "connectUnderlayUDP %s end ", t.config.LogPeerNode())
 	var ul underlay
 	underlayProtocol := t.config.UnderlayProtocol
 	if underlayProtocol == "" {
@@ -330,8 +330,8 @@ func (t *P2PTunnel) connectUnderlayUDP() (c underlay, err error) {
 }
 
 func (t *P2PTunnel) connectUnderlayTCP() (c underlay, err error) {
-	gLog.Printf(LvDEBUG, "connectUnderlayTCP %s start ", t.config.PeerNode)
-	defer gLog.Printf(LvDEBUG, "connectUnderlayTCP %s end ", t.config.PeerNode)
+	gLog.Printf(LvDEBUG, "connectUnderlayTCP %s start ", t.config.LogPeerNode())
+	defer gLog.Printf(LvDEBUG, "connectUnderlayTCP %s end ", t.config.LogPeerNode())
 	var ul *underlayTCP
 	peerIP := t.config.peerIP
 	if t.config.linkMode == LinkModeIntranet {
@@ -392,8 +392,8 @@ func (t *P2PTunnel) connectUnderlayTCP() (c underlay, err error) {
 }
 
 func (t *P2PTunnel) connectUnderlayTCPSymmetric() (c underlay, err error) {
-	gLog.Printf(LvDEBUG, "connectUnderlayTCPSymmetric %s start ", t.config.PeerNode)
-	defer gLog.Printf(LvDEBUG, "connectUnderlayTCPSymmetric %s end ", t.config.PeerNode)
+	gLog.Printf(LvDEBUG, "connectUnderlayTCPSymmetric %s start ", t.config.LogPeerNode())
+	defer gLog.Printf(LvDEBUG, "connectUnderlayTCPSymmetric %s end ", t.config.LogPeerNode())
 	ts := time.Duration(int64(t.punchTs) + t.pn.dt + t.pn.ddtma*int64(time.Since(t.pn.hbTime)+PunchTsDelay)/int64(NetworkHeartbeatTime) - time.Now().UnixNano())
 	if ts > PunchTsDelay || ts < 0 {
 		ts = PunchTsDelay
@@ -486,8 +486,8 @@ func (t *P2PTunnel) connectUnderlayTCPSymmetric() (c underlay, err error) {
 }
 
 func (t *P2PTunnel) connectUnderlayTCP6() (c underlay, err error) {
-	gLog.Printf(LvDEBUG, "connectUnderlayTCP6 %s start ", t.config.PeerNode)
-	defer gLog.Printf(LvDEBUG, "connectUnderlayTCP6 %s end ", t.config.PeerNode)
+	gLog.Printf(LvDEBUG, "connectUnderlayTCP6 %s start ", t.config.LogPeerNode())
+	defer gLog.Printf(LvDEBUG, "connectUnderlayTCP6 %s end ", t.config.LogPeerNode())
 	var ul *underlayTCP6
 	if t.config.isUnderlayServer == 1 {
 		t.pn.push(t.config.PeerNode, MsgPushUnderlayConnect, nil)
@@ -597,7 +597,7 @@ func (t *P2PTunnel) readLoop() {
 			tunnelID := binary.LittleEndian.Uint64(body[:8])
 			gLog.Printf(LvDev, "relay data to %d, len=%d", tunnelID, head.DataLen-RelayHeaderSize)
 			if err := t.pn.relay(tunnelID, body[RelayHeaderSize:]); err != nil {
-				gLog.Printf(LvERROR, "%s:%d relay to %d len=%d error:%s", t.config.PeerNode, t.id, tunnelID, len(body), ErrRelayTunnelNotFound)
+				gLog.Printf(LvERROR, "%s:%d relay to %d len=%d error:%s", t.config.LogPeerNode(), t.id, tunnelID, len(body), ErrRelayTunnelNotFound)
 			}
 		case MsgRelayHeartbeat:
 			req := RelayHeartbeat{}
@@ -691,8 +691,8 @@ func (t *P2PTunnel) writeLoop() {
 	t.hbMtx.Unlock()
 	tc := time.NewTicker(TunnelHeartbeatTime)
 	defer tc.Stop()
-	gLog.Printf(LvDEBUG, "%s:%d tunnel writeLoop start", t.config.PeerNode, t.id)
-	defer gLog.Printf(LvDEBUG, "%s:%d tunnel writeLoop end", t.config.PeerNode, t.id)
+	gLog.Printf(LvDEBUG, "%s:%d tunnel writeLoop start", t.config.LogPeerNode(), t.id)
+	defer gLog.Printf(LvDEBUG, "%s:%d tunnel writeLoop end", t.config.LogPeerNode(), t.id)
 	for t.isRuning() {
 		select {
 		case buff := <-t.writeDataSmall:
@@ -781,13 +781,13 @@ func (t *P2PTunnel) asyncWriteNodeData(mainType, subType uint16, data []byte) {
 		case t.writeDataSmall <- writeBytes:
 			// gLog.Printf(LvWARN, "%s:%d t.writeDataSmall write %d", t.config.PeerNode, t.id, len(t.writeDataSmall))
 		default:
-			gLog.Printf(LvWARN, "%s:%d t.writeDataSmall is full, drop it", t.config.PeerNode, t.id)
+			gLog.Printf(LvWARN, "%s:%d t.writeDataSmall is full, drop it", t.config.LogPeerNode(), t.id)
 		}
 	} else {
 		select {
 		case t.writeData <- writeBytes:
 		default:
-			gLog.Printf(LvWARN, "%s:%d t.writeData is full, drop it", t.config.PeerNode, t.id)
+			gLog.Printf(LvWARN, "%s:%d t.writeData is full, drop it", t.config.LogPeerNode(), t.id)
 		}
 	}
 
diff --git a/core/protocol.go b/core/protocol.go
index ed863e3..737d0f0 100644
--- a/core/protocol.go
+++ b/core/protocol.go
@@ -10,7 +10,7 @@ import (
 	"time"
 )
 
-const OpenP2PVersion = "3.18.4"
+const OpenP2PVersion = "3.19.0"
 const ProductName string = "openp2p"
 const LeastSupportVersion = "3.0.0"
 const SyncServerTimeVersion = "3.9.0"
@@ -108,6 +108,7 @@ const (
 	MsgPushReportGoroutine      = 16
 	MsgPushReportMemApps        = 17
 	MsgPushServerSideSaveMemApp = 18
+	MsgPushCheckRemoteService   = 19
 )
 
 // MsgP2P sub type message
@@ -143,6 +144,7 @@ const (
 	MsgReportApps
 	MsgReportLog
 	MsgReportMemApps
+	MsgReportResponse
 )
 
 const (
@@ -510,6 +512,11 @@ type ServerSideSaveMemApp struct {
 	AppID         uint64 `json:"appID,omitempty"`
 }
 
+type CheckRemoteService struct {
+	Host string `json:"host,omitempty"`
+	Port uint32 `json:"port,omitempty"`
+}
+
 const rootCA = `-----BEGIN CERTIFICATE-----
 MIIDhTCCAm0CFHm0cd8dnGCbUW/OcS56jf0gvRk7MA0GCSqGSIb3DQEBCwUAMH4x
 CzAJBgNVBAYTAkNOMQswCQYDVQQIDAJHRDETMBEGA1UECgwKb3BlbnAycC5jbjET
diff --git a/lib/openp2p.go b/lib/openp2p.go
index 2d14501..9527136 100644
--- a/lib/openp2p.go
+++ b/lib/openp2p.go
@@ -1,5 +1,9 @@
 package main
 
+// On Windows env
+// cd lib
+// go build -o openp2p.dll -buildmode=c-shared openp2p.go
+// caller example see example/dll
 import (
 	op "openp2p/core"
 )