diff --git a/server/dashboard_api.go b/server/dashboard_api.go
index d51389f..9753046 100644
--- a/server/dashboard_api.go
+++ b/server/dashboard_api.go
@@ -28,13 +28,11 @@ import (
 )
 
 type GeneralResponse struct {
-	Code int64  `json:"code"`
-	Msg  string `json:"msg"`
+	Code int
+	Msg  string
 }
 
 type ServerInfoResp struct {
-	GeneralResponse
-
 	Version           string `json:"version"`
 	BindPort          int    `json:"bind_port"`
 	BindUdpPort       int    `json:"bind_udp_port"`
@@ -55,18 +53,19 @@ type ServerInfoResp struct {
 
 // api/serverinfo
 func (svr *Service) ApiServerInfo(w http.ResponseWriter, r *http.Request) {
-	var (
-		buf []byte
-		res ServerInfoResp
-	)
+	res := GeneralResponse{Code: 200}
 	defer func() {
 		log.Info("Http response [%s]: code [%d]", r.URL.Path, res.Code)
+		w.WriteHeader(res.Code)
+		if len(res.Msg) > 0 {
+			w.Write([]byte(res.Msg))
+		}
 	}()
 
 	log.Info("Http request: [%s]", r.URL.Path)
 	cfg := &g.GlbServerCfg.ServerCommonConf
 	serverStats := svr.statsCollector.GetServer()
-	res = ServerInfoResp{
+	svrResp := ServerInfoResp{
 		Version:           version.Full(),
 		BindPort:          cfg.BindPort,
 		BindUdpPort:       cfg.BindUdpPort,
@@ -85,8 +84,8 @@ func (svr *Service) ApiServerInfo(w http.ResponseWriter, r *http.Request) {
 		ProxyTypeCounts: serverStats.ProxyTypeCounts,
 	}
 
-	buf, _ = json.Marshal(&res)
-	w.Write(buf)
+	buf, _ := json.Marshal(&svrResp)
+	res.Msg = string(buf)
 }
 
 type BaseOutConf struct {
@@ -155,31 +154,29 @@ type ProxyStatsInfo struct {
 }
 
 type GetProxyInfoResp struct {
-	GeneralResponse
 	Proxies []*ProxyStatsInfo `json:"proxies"`
 }
 
 // api/proxy/:type
 func (svr *Service) ApiProxyByType(w http.ResponseWriter, r *http.Request) {
-	var (
-		buf []byte
-		res GetProxyInfoResp
-	)
+	res := GeneralResponse{Code: 200}
 	params := mux.Vars(r)
 	proxyType := params["type"]
 
 	defer func() {
 		log.Info("Http response [%s]: code [%d]", r.URL.Path, res.Code)
-		log.Info(r.URL.Path)
-		log.Info(r.URL.RawPath)
+		w.WriteHeader(res.Code)
+		if len(res.Msg) > 0 {
+			w.Write([]byte(res.Msg))
+		}
 	}()
 	log.Info("Http request: [%s]", r.URL.Path)
 
-	res.Proxies = svr.getProxyStatsByType(proxyType)
-
-	buf, _ = json.Marshal(&res)
-	w.Write(buf)
+	proxyInfoResp := GetProxyInfoResp{}
+	proxyInfoResp.Proxies = svr.getProxyStatsByType(proxyType)
 
+	buf, _ := json.Marshal(&proxyInfoResp)
+	res.Msg = string(buf)
 }
 
 func (svr *Service) getProxyStatsByType(proxyType string) (proxyInfos []*ProxyStatsInfo) {
@@ -215,8 +212,6 @@ func (svr *Service) getProxyStatsByType(proxyType string) (proxyInfos []*ProxySt
 
 // Get proxy info by name.
 type GetProxyStatsResp struct {
-	GeneralResponse
-
 	Name            string      `json:"name"`
 	Conf            interface{} `json:"conf"`
 	TodayTrafficIn  int64       `json:"today_traffic_in"`
@@ -229,45 +224,50 @@ type GetProxyStatsResp struct {
 
 // api/proxy/:type/:name
 func (svr *Service) ApiProxyByTypeAndName(w http.ResponseWriter, r *http.Request) {
-	var (
-		buf []byte
-		res GetProxyStatsResp
-	)
+	res := GeneralResponse{Code: 200}
 	params := mux.Vars(r)
 	proxyType := params["type"]
 	name := params["name"]
 
 	defer func() {
 		log.Info("Http response [%s]: code [%d]", r.URL.Path, res.Code)
+		w.WriteHeader(res.Code)
+		if len(res.Msg) > 0 {
+			w.Write([]byte(res.Msg))
+		}
 	}()
 	log.Info("Http request: [%s]", r.URL.Path)
 
-	res = svr.getProxyStatsByTypeAndName(proxyType, name)
+	proxyStatsResp := GetProxyStatsResp{}
+	proxyStatsResp, res.Code, res.Msg = svr.getProxyStatsByTypeAndName(proxyType, name)
+	if res.Code != 200 {
+		return
+	}
 
-	buf, _ = json.Marshal(&res)
-	w.Write(buf)
+	buf, _ := json.Marshal(&proxyStatsResp)
+	res.Msg = string(buf)
 }
 
-func (svr *Service) getProxyStatsByTypeAndName(proxyType string, proxyName string) (proxyInfo GetProxyStatsResp) {
+func (svr *Service) getProxyStatsByTypeAndName(proxyType string, proxyName string) (proxyInfo GetProxyStatsResp, code int, msg string) {
 	proxyInfo.Name = proxyName
 	ps := svr.statsCollector.GetProxiesByTypeAndName(proxyType, proxyName)
 	if ps == nil {
-		proxyInfo.Code = 1
-		proxyInfo.Msg = "no proxy info found"
+		code = 404
+		msg = "no proxy info found"
 	} else {
 		if pxy, ok := svr.pxyManager.GetByName(proxyName); ok {
 			content, err := json.Marshal(pxy.GetConf())
 			if err != nil {
 				log.Warn("marshal proxy [%s] conf info error: %v", ps.Name, err)
-				proxyInfo.Code = 2
-				proxyInfo.Msg = "parse conf error"
+				code = 400
+				msg = "parse conf error"
 				return
 			}
 			proxyInfo.Conf = getConfByType(ps.Type)
 			if err = json.Unmarshal(content, &proxyInfo.Conf); err != nil {
 				log.Warn("unmarshal proxy [%s] conf info error: %v", ps.Name, err)
-				proxyInfo.Code = 2
-				proxyInfo.Msg = "parse conf error"
+				code = 400
+				msg = "parse conf error"
 				return
 			}
 			proxyInfo.Status = consts.Online
@@ -286,36 +286,38 @@ func (svr *Service) getProxyStatsByTypeAndName(proxyType string, proxyName strin
 
 // api/traffic/:name
 type GetProxyTrafficResp struct {
-	GeneralResponse
-
 	Name       string  `json:"name"`
 	TrafficIn  []int64 `json:"traffic_in"`
 	TrafficOut []int64 `json:"traffic_out"`
 }
 
 func (svr *Service) ApiProxyTraffic(w http.ResponseWriter, r *http.Request) {
-	var (
-		buf []byte
-		res GetProxyTrafficResp
-	)
+	res := GeneralResponse{Code: 200}
 	params := mux.Vars(r)
 	name := params["name"]
 
 	defer func() {
 		log.Info("Http response [%s]: code [%d]", r.URL.Path, res.Code)
+		w.WriteHeader(res.Code)
+		if len(res.Msg) > 0 {
+			w.Write([]byte(res.Msg))
+		}
 	}()
 	log.Info("Http request: [%s]", r.URL.Path)
 
-	res.Name = name
+	trafficResp := GetProxyTrafficResp{}
+	trafficResp.Name = name
 	proxyTrafficInfo := svr.statsCollector.GetProxyTraffic(name)
+
 	if proxyTrafficInfo == nil {
-		res.Code = 1
+		res.Code = 404
 		res.Msg = "no proxy info found"
+		return
 	} else {
-		res.TrafficIn = proxyTrafficInfo.TrafficIn
-		res.TrafficOut = proxyTrafficInfo.TrafficOut
+		trafficResp.TrafficIn = proxyTrafficInfo.TrafficIn
+		trafficResp.TrafficOut = proxyTrafficInfo.TrafficOut
 	}
 
-	buf, _ = json.Marshal(&res)
-	w.Write(buf)
+	buf, _ := json.Marshal(&res)
+	res.Msg = string(buf)
 }
diff --git a/web/frps/Makefile b/web/frps/Makefile
index 42dec29..ceffed7 100644
--- a/web/frps/Makefile
+++ b/web/frps/Makefile
@@ -1,9 +1,7 @@
 .PHONY: dist build
-install:
-	@npm install
+
+build:
+	@npm run build
 
 dev: install
 	@npm run dev
-
-build:
-	@npm run build
\ No newline at end of file