update 11/06-1

ftpsClient.go

@@ -24,6 +24,7 @@ var (
 	retry int    = 0
 	intrv int    = 0
 )
+var ftp *goftp.FTP
 
 func init() {
 	flag.StringVar(&host, "h", "203.93.100.58", "FTPS Server Address")
@@ -47,46 +48,61 @@ func main() {
 		os.Exit(1)
 	}
 
-	var err error
+	err := _InitFTP()
-	var ftp *goftp.FTP
-
-	ftp, err = goftp.Connect(fmt.Sprintf("%s:%s", host, port))
 	if err != nil {
-		log.Printf("[ERR]  %s\r\n", err.Error())
-		os.Exit(1)
-	}
-	defer ftp.Close()
-
-	cfg := tls.Config{
-		InsecureSkipVerify: true,
-		MinVersion:         tls.VersionTLS10,
-	}
-
-	err = ftp.AuthTLS(&cfg)
-	if err != nil {
-		log.Printf("[ERR]  %s\r\n", err.Error())
-		os.Exit(1)
-	}
-
-	err = ftp.Login(user, pswd)
-	if err != nil {
-		log.Printf("[ERR]  %s\r\n", err.Error())
 		os.Exit(1)
 	}
 
 	switch act {
 	case "list":
-		_List(ftp, rmt)
+		_List(rmt)
 	case "dnld":
-		_Download(ftp, loc, rmt)
+		_Download(loc, rmt)
 	case "upld":
-		_Upload(ftp, loc, rmt)
+		_Upload(loc, rmt)
 	default:
-		_List(ftp, loc)
+		_List(rmt)
 	}
 }
 
-func _List(ftp *goftp.FTP, path string) {
+func _InitFTP() error {
+	var err error
+	for i := 0; i <= retry; i++ {
+		if i > 0 {
+			fmt.Println("[###]  Retrying Connect ...")
+		}
+		ftp, err = goftp.Connect(fmt.Sprintf("%s:%s", host, port))
+		if err != nil {
+			log.Printf("[ERR]  %s\r\n", err.Error())
+			continue
+		}
+		defer ftp.Close()
+
+		cfg := tls.Config{
+			InsecureSkipVerify: true,
+			MinVersion:         tls.VersionTLS10,
+		}
+
+		err = ftp.AuthTLS(&cfg)
+		if err != nil {
+			log.Printf("[ERR]  %s\r\n", err.Error())
+			continue
+		}
+
+		err = ftp.Login(user, pswd)
+		if err != nil {
+			log.Printf("[ERR]  %s\r\n", err.Error())
+			continue
+		}
+	}
+	if err != nil {
+		log.Printf("[***]  %s; %s\r\n", rmt, loc)
+		return err
+	}
+	return nil
+}
+
+func _List(path string) {
 	files, err := ftp.List(path)
 	if err != nil {
 		log.Printf("[ERR]  %s\r\n", err.Error())
@@ -97,14 +113,14 @@ func _List(ftp *goftp.FTP, path string) {
 	}
 }
 
-func _Download(ftp *goftp.FTP, local, remote string) {
+func _Download(local, remote string) {
 	log.Printf("[MSG]  Downloading: %s\r\n", remote)
 	var err error
 	base := filepath.Base(remote)
 	for i := 0; i <= retry; i++ {
 		if i > 0 {
 			time.Sleep(time.Second * time.Duration(intrv))
-			log.Printf("[***]  Retrying Download %d/%d: %s\r\n", i, retry, remote)
+			log.Printf("[###]  Retrying Download %d/%d: %s\r\n", i, retry, remote)
 		}
 		_, err = ftp.Retr(remote, func(rdr io.Reader) error {
 			wtr, oserr := os.Create(local + base)
@@ -123,20 +139,20 @@ func _Download(ftp *goftp.FTP, local, remote string) {
 		}
 	}
 	if err != nil {
-		log.Printf("[***]  %s\r\n", err.Error())
+		log.Printf("[***]  %s; %s\r\n", remote, local)
-		log.Printf("[ERR]  Download NG: %s\r\n", remote)
+		log.Printf("[ERR]  Download NG: %s; %s\r\n", remote, err.Error())
 		return
 	}
 	log.Printf("[MSG]  Download OK: %s\r\n", remote)
 }
 
-func _Upload(ftp *goftp.FTP, local, remote string) {
+func _Upload(local, remote string) {
 	log.Printf("[MSG]  Uploading: %s\r\n", local)
 	var err error
 	for i := 0; i <= retry; i++ {
 		if i > 0 {
 			time.Sleep(time.Second * time.Duration(intrv))
-			log.Printf("[***]  Retrying Upload %d/%d: %s\r\n", i, retry, local)
+			log.Printf("[###]  Retrying Upload %d/%d: %s\r\n", i, retry, local)
 		}
 		err = ftp.Cwd(remote)
 		if err != nil {
@@ -149,8 +165,8 @@ func _Upload(ftp *goftp.FTP, local, remote string) {
 		break
 	}
 	if err != nil {
-		log.Printf("[***]  %s\r\n", err.Error())
+		log.Printf("[***]  %s; %s\r\n", remote, local)
-		log.Printf("[ERR]  Upload NG: %s\r\n", local)
+		log.Printf("[ERR]  Upload NG: %s; %s\r\n", local, err.Error())
 		return
 	}
 	log.Printf("[MSG]  Upload OK: %s\r\n", local)

go.mod

@@ -1,5 +1,5 @@
 module ftpsClient
 
-go 1.21.1
+go 1.20
 
 require gopkg.in/dutchcoders/goftp.v1 v1.0.0-20170301105846-ed59a591ce14