Move yggdrasilctl endpoint setting logic into separate func

cmd/yggdrasilctl/main.go

@@ -71,35 +71,7 @@ func parseFlagsAndArgs(cmdLineEnv *CmdLineEnv) {
 	cmdLineEnv.ver = *ver
 }
 
-func run() int {
-	logbuffer := &bytes.Buffer{}
-	logger := log.New(logbuffer, "", log.Flags())
-
-	defer func() int {
-		if r := recover(); r != nil {
-			logger.Println("Fatal error:", r)
-			fmt.Print(logbuffer)
-			return 1
-		}
-		return 0
-	}()
-
-	var cmdLineEnv CmdLineEnv
-	cmdLineEnv.endpoint = defaults.GetDefaults().DefaultAdminListen
-	parseFlagsAndArgs(&cmdLineEnv)
-
-	if cmdLineEnv.ver {
-		fmt.Println("Build name:", version.BuildName())
-		fmt.Println("Build version:", version.BuildVersion())
-		fmt.Println("To get the version number of the running Yggdrasil node, run", os.Args[0], "getSelf")
-		return 0
-	}
-
-	if len(cmdLineEnv.args) == 0 {
-		flag.Usage()
-		return 0
-	}
-
+func setEndpoint(cmdLineEnv *CmdLineEnv, logger *log.Logger) {
 	if cmdLineEnv.server == cmdLineEnv.endpoint {
 		if config, err := ioutil.ReadFile(defaults.GetDefaults().DefaultConfigFile); err == nil {
 			if bytes.Equal(config[0:2], []byte{0xFF, 0xFE}) ||
@@ -131,6 +103,38 @@ func run() int {
 		cmdLineEnv.endpoint = cmdLineEnv.server
 		logger.Println("Using endpoint", cmdLineEnv.endpoint, "from command line")
 	}
+}
+
+func run() int {
+	logbuffer := &bytes.Buffer{}
+	logger := log.New(logbuffer, "", log.Flags())
+
+	defer func() int {
+		if r := recover(); r != nil {
+			logger.Println("Fatal error:", r)
+			fmt.Print(logbuffer)
+			return 1
+		}
+		return 0
+	}()
+
+	var cmdLineEnv CmdLineEnv
+	cmdLineEnv.endpoint = defaults.GetDefaults().DefaultAdminListen
+	parseFlagsAndArgs(&cmdLineEnv)
+
+	if cmdLineEnv.ver {
+		fmt.Println("Build name:", version.BuildName())
+		fmt.Println("Build version:", version.BuildVersion())
+		fmt.Println("To get the version number of the running Yggdrasil node, run", os.Args[0], "getSelf")
+		return 0
+	}
+
+	if len(cmdLineEnv.args) == 0 {
+		flag.Usage()
+		return 0
+	}
+
+	setEndpoint(&cmdLineEnv, logger)
 
 	var conn net.Conn
 	u, err := url.Parse(cmdLineEnv.endpoint)