Function debugMode

cmd/tailscaled/debug.go:69–99

(args []string)

}

func debugMode(args []string) error {
	fs := flag.NewFlagSet("debug", flag.ExitOnError)
	fs.BoolVar(&debugArgs.ifconfig, "ifconfig", false, "If true, print network interface state")
	fs.BoolVar(&debugArgs.monitor, "monitor", false, "If true, run network monitor forever. Precludes all other options.")
	fs.BoolVar(&debugArgs.portmap, "portmap", false, "If true, run portmap debugging. Precludes all other options.")
	fs.StringVar(&debugArgs.getURL, "get-url", "", "If non-empty, fetch provided URL.")
	fs.StringVar(&debugArgs.derpCheck, "derp", "", "if non-empty, test a DERP ping via named region code")
	if err := fs.Parse(args); err != nil {
		return err
	}
	if len(fs.Args()) > 0 {
		return errors.New("unknown non-flag debug subcommand arguments")
	}
	ctx := context.Background()
	if debugArgs.derpCheck != "" {
		return checkDerp(ctx, debugArgs.derpCheck)
	}
	if debugArgs.ifconfig {
		return runMonitor(ctx, false)
	}
	if debugArgs.monitor {
		return runMonitor(ctx, true)
	}
	if debugArgs.portmap {
		return debugPortmap(ctx)
	}
	if debugArgs.getURL != "" {
		return getURL(ctx, debugArgs.getURL)
	}
	return errors.New("only --monitor is available at the moment")
}

func runMonitor(ctx context.Context, loop bool) error {
	b := eventbus.New()