cmd/utils: allow empty bootnodes flag override (#18509)

0a454554 · Anton Evangelatov · Felix Lange · ad13d2d4 · 0a454554
Commit 0a454554 authored Jan 24, 2019 by Anton Evangelatov Committed by Felix Lange Jan 24, 2019
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Showing with 6 additions and 4 deletions

flags.go cmd/utils/flags.go +6 -4

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--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -749,11 +749,13 @@ func setBootstrapNodes(ctx *cli.Context, cfg *p2p.Config) {

 	cfg.BootstrapNodes = make([]*enode.Node, 0, len(urls))
 	for _, url := range urls {
-		node, err := enode.ParseV4(url)
-		if err != nil {
-			log.Crit("Bootstrap URL invalid", "enode", url, "err", err)
+		if url != "" {
+			node, err := enode.ParseV4(url)
+			if err != nil {
+				log.Crit("Bootstrap URL invalid", "enode", url, "err", err)
+			}
+			cfg.BootstrapNodes = append(cfg.BootstrapNodes, node)
 		}
-		cfg.BootstrapNodes = append(cfg.BootstrapNodes, node)
 	}
 }