define relay ports by amount

src/cli/cli.go

@@ -89,7 +89,8 @@ func Run() (err error) {
 			Action:      relay,
 			Flags: []cli.Flag{
 				&cli.StringFlag{Name: "host", Usage: "host of the relay"},
-				&cli.StringFlag{Name: "ports", Value: "9009,9010,9011,9012,9013", Usage: "ports of the relay"},
+				&cli.IntFlag{Name: "port", Value: 9009, Usage: "base port for the relay"},
+				&cli.IntFlag{Name: "transfers", Value: 5, Usage: "number of ports to use for relay"},
 			},
 		},
 	}
@@ -668,7 +669,18 @@ func relay(c *cli.Context) (err error) {
 		debugString = "debug"
 	}
 	host := c.String("host")
-	ports := strings.Split(c.String("ports"), ",")
+	portString := c.Int("port")
+	if portString == 0 {
+		portString = 9009
+	}
+	transfersString := c.Int("transfers")
+	if transfersString == 0 {
+		transfersString = 4
+	}
+	ports := make([]string, transfersString)
+	for i := range ports {
+		ports[i] = strconv.Itoa(portString + i)
+	}
 	tcpPorts := strings.Join(ports[1:], ",")
 	for i, port := range ports {
 		if i == 0 {