Added custom port flag to server command

query-cpu/cmd/server.go

@@ -26,7 +26,7 @@ Cobra is a CLI library for Go that empowers applications.
 This application is a tool to generate the needed files
 to quickly create a Cobra application.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		server()
+		server(cmd)
 	},
 }
 
@@ -37,17 +37,26 @@ func init() {
 
 	// Cobra supports Persistent Flags which will work for this command
 	// and all subcommands, e.g.:
-	// serverCmd.PersistentFlags().String("foo", "", "A help for foo")
+	//serverCmd.PersistentFlags().String("", "", "A help for foo")
 
 	// Cobra supports local flags which will only run when this command
 	// is called directly, e.g.:
 	// serverCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+	serverCmd.Flags().String("port", "1302", "Port to listen on")
 }
 
-func server() {
-	ln, err := net.Listen("tcp", ":8080")
-	catchErr(err)
-	fmt.Println("Listening on port 8080...")
+func server(cmd *cobra.Command) {
+	var lport string
+	port, _ := cmd.Flags().GetString("port")
+	if port != "" {
+		lport = port
+	} else {
+		lport = "1302"
+	}
+
+	ln, err := net.Listen("tcp", ":"+lport)
+	cobra.CheckErr(err)
+	fmt.Printf("Listening on port %v...\n", lport)
 	for {
 		conn, err := ln.Accept()
 		catchErr(err)