change variable back to constant slideshowapp

change name to lower case

.env

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

.gitea/workflows/build.yml

@@ -6,7 +6,7 @@ on:
       - '*'
 
 env:
-  APP_NAME: slideshowApp
+  APP_NAME: slideshowapp
 
 jobs:
   build:

.gitignore

@@ -1,4 +1,6 @@
 images/
 slideshowApp
+slideshowapp
 schedule.json
-*.log
+*.log
+*.exe

env/enviroment.go

@@ -26,11 +26,13 @@ func Load(path string) error {
 }
 
 func (key EnvKey) GetValue() string {
-	port := os.Getenv(string(key))
-	if port == "" {
-		port = "8080"
+	keyStr := string(key)
+	value := os.Getenv(keyStr)
+	if key == Port && value == "" {
+		value = "8080"
 	}
-	return port
+
+	return value
 }
 
 func (key EnvKey) SetValue(value string) {

handlers/infos.go

@@ -20,15 +20,24 @@ 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 ""
 }