fix: clear UPNP port mapping when exist app (#624)

pkg/util/url.go

@@ -8,18 +8,13 @@ import (
 	"strings"
 )
 
-const FileSchema = "FILE"
-
 func ParseSchema(url string) string {
 	index := strings.Index(url, ":")
 	// if no schema or windows path like C:\a.txt, return FILE
 	if index == -1 || index == 1 {
-		return FileSchema
+		return ""
 	}
 	schema := url[:index]
-	if schema == "data" {
-		schema, _ = ParseDataUri(url)
-	}
 	return strings.ToUpper(schema)
 }
 
@@ -32,7 +27,6 @@ func ParseDataUri(uri string) (string, []byte) {
 	}
 	mime := matches[1]
 	base64Data := matches[2]
-	// 解码Base64数据
 	data, err := base64.StdEncoding.DecodeString(base64Data)
 	if err != nil {
 		return "", nil