fix enviroment bug

.env

@@ -1,5 +1,5 @@
 #empty|development|debug
-ENV=            
+ENV=
 PHOTO_DIR=images
 HOST=0.0.0.0
 PORT=8080

env/enviroment.go

@@ -26,7 +26,13 @@ func Load(path string) error {
 }
 
 func (key EnvKey) GetValue() string {
-	return os.Getenv(string(key))
+	keyStr := string(key)
+	value := os.Getenv(keyStr)
+	if key == Port && value == "" {
+		value = "8080"
+	}
+
+	return value
 }
 
 func (key EnvKey) SetValue(value string) {

handlers/infos.go

@@ -20,34 +20,34 @@ func GetLocalIP() string {
 }
 
 func getActiveIP() string {
-	conn, err := net.Dial("udp", "8.8.8.8:80")
+	addrs, err := net.InterfaceAddrs()
 	if err != nil {
 		return ""
 	}
-	defer conn.Close()
 
-	addr := conn.LocalAddr()
-	if udpAddr, ok := addr.(*net.UDPAddr); ok {
-		return udpAddr.IP.String()
+	for _, address := range addrs {
+		if ipnet, ok := address.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
+
+			if ipnet.IP.To4() != nil {
+				ipStr := ipnet.IP.String()
+
+				if ipnet.IP.IsLinkLocalUnicast() {
+					continue
+				}
+
+				return ipStr
+			}
+		}
 	}
 	return ""
 }
 
 func InfoHandler(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json")
-	port := env.Port.GetValue()
-	if port == "" {
-		port = "8080"
-	}
-
-	speed := env.IntervalDefault.GetValue()
-	if speed == "" {
-		speed = "10"
-	}
 
 	data := map[string]string{
 		"ip":    GetLocalIP(),
-		"port":  port,
+		"port":  env.Port.GetValue(),
 		"speed": GetInterval(),
 	}
 	err := json.NewEncoder(w).Encode(data)