diff --git a/cmd/sfb/main.go b/cmd/sfb/main.go
index e8f8859..ba8c99e 100644
--- a/cmd/sfb/main.go
+++ b/cmd/sfb/main.go
@@ -10,10 +10,24 @@ import (
 )
 
 const (
-	EXIT_SUCCESS = 0
-	EXIT_ERROR   = 1
+	EXIT_SUCCESS = iota
+	EXIT_ERROR
 )
 
+// default values
+var port uint32 = 8000
+var logslevel uint = 1
+
+// read config/config.yml
+func init() {
+	if err := config.Init(); err != nil {
+		log.Printf("%s", err.Error())
+		os.Exit(EXIT_ERROR)
+	}
+	port = viper.GetUint32("port")
+	logslevel = viper.GetUint("logslevel")
+}
+
 // @title           Shutdown from browser
 // @version         0.1
 // @description     Linux service for shutdown PC from the browser (Go, React)
@@ -24,19 +38,7 @@ const (
 // @contact.name   korovindenis
 // @contact.url    https://github.com/korovindenis
 func main() {
-	if err := config.Init(); err != nil {
-		log.Printf("%s", err.Error())
-		os.Exit(EXIT_ERROR)
-	}
-	port := viper.GetString("port")
-	logslevel := viper.GetUint("logslevel")
-
-	sfb, err := transport.NewSfb(logslevel)
-	if err != nil {
-		log.Printf("%s", err.Error())
-		os.Exit(EXIT_ERROR)
-	}
-	if err := sfb.Run(port, logslevel); err != nil {
+	if err := transport.Exec(port, logslevel); err != nil {
 		log.Printf("%s", err.Error())
 		os.Exit(EXIT_ERROR)
 	}
diff --git a/internal/transport/transport.go b/internal/transport/transport.go
index 9d5e0cc..70c0899 100644
--- a/internal/transport/transport.go
+++ b/internal/transport/transport.go
@@ -28,9 +28,9 @@ func (s *Sfb) FindBox() (res bool, err error) {
 	return true, nil
 }
 
-func (s *Sfb) Run(port string, logslevel uint) error {
+func (s *Sfb) Run(port uint32, logslevel uint) error {
 	s.HttpServer = &http.Server{
-		Addr:           ":" + port,
+		Addr:           ":" + string(port),
 		ReadTimeout:    10 * time.Second,
 		WriteTimeout:   10 * time.Second,
 		MaxHeaderBytes: 1 << 20,
@@ -67,8 +67,10 @@ func NewSfb(logslevel uint) (*Sfb, error) {
 	http.HandleFunc("/", serveAppHandler(newApp.WebFolder))
 	http.HandleFunc("/api/v1/server-power/", handler.PowerHandler)
 	http.HandleFunc("/api/v1/get-time-autopoweroff/", handler.GetTimePOHandler)
+
 	// Server static files
 	http.Handle("/static/", http.FileServer(newApp.WebFolder.HTTPBox()))
+
 	// Swagger
 	http.HandleFunc("/swagger/", httpSwagger.WrapHandler)
 	go service.New(&handler.MyServer, logslevel)
@@ -76,6 +78,20 @@ func NewSfb(logslevel uint) (*Sfb, error) {
 	return &newApp, nil
 }
 
+func Exec(port uint32, logslevel uint) error {
+	sfb, err := NewSfb(logslevel)
+	if err != nil {
+		return err
+	}
+
+	err = sfb.Run(port, logslevel)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func serveAppHandler(app *rice.Box) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		indexFile, err := app.Open("index.html")