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cmd/geth: configure mainnet DNS

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This commit is contained in:
Felix Lange 2020-02-12 13:55:42 +01:00
parent 342ade82f6
commit 7ca40ec6aa
3 changed files with 13 additions and 8 deletions
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2
cmd/geth/main.go
View file

@ -131,7 +131,7 @@ var (
utils.NetrestrictFlag,
utils.NodeKeyFileFlag,
utils.NodeKeyHexFlag,
utils.DisableDNSFlag,
utils.DiscoveryURLFlag,
utils.DeveloperFlag,
utils.DeveloperPeriodFlag,
utils.TestnetFlag,

2
cmd/geth/usage.go
View file

@ -191,7 +191,7 @@ var AppHelpFlagGroups = []flagGroup{
utils.NetrestrictFlag,
utils.NodeKeyFileFlag,
utils.NodeKeyHexFlag,
utils.DisableDNSFlag,
utils.DiscoveryURLFlag,
},
},
{

17
cmd/utils/flags.go
View file

@ -658,9 +658,9 @@ var (
Name: "netrestrict",
Usage: "Restricts network communication to the given IP networks (CIDR masks)",
}
DisableDNSFlag = cli.BoolFlag{
Name: "nodns",
Usage: "disables DNS-based node discovery",
DiscoveryURLFlag = cli.StringSliceFlag{
Name: "discovery-urls",
Usage: "Overrides DNS discovery entry points",
}
// ATM the url is left to the user and deployment to
@ -1481,8 +1481,9 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
if ctx.GlobalIsSet(RPCGlobalGasCap.Name) {
cfg.RPCGasCap = new(big.Int).SetUint64(ctx.GlobalUint64(RPCGlobalGasCap.Name))
}
// if ctx.GlobalIsSet(DiscoveryURLFlag.Name) {
// }
if ctx.GlobalIsSet(DiscoveryURLFlag.Name) {
cfg.DiscoveryURLs = ctx.GlobalStringSlice(DiscoveryURLFlag.Name)
}
// Override any default configs for hard coded networks.
switch {
@ -1530,13 +1531,17 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
if !ctx.GlobalIsSet(MinerGasPriceFlag.Name) && !ctx.GlobalIsSet(MinerLegacyGasPriceFlag.Name) {
cfg.Miner.GasPrice = big.NewInt(1)
}
default:
if cfg.NetworkId == 1 {
setDNSDiscoveryDefaults(ctx, cfg, params.KnownDNSNetworks[params.MainnetGenesisHash])
}
}
}
// setDNSDiscoveryDefaults configures DNS discovery with the given URL if
// no URL is set.
func setDNSDiscoveryDefaults(ctx *cli.Context, cfg *eth.Config, url string) {
if len(cfg.DiscoveryURLs) > 0 || ctx.GlobalIsSet(DisableDNSFlag.Name) {
if len(cfg.DiscoveryURLs) > 0 {
return
}
cfg.DiscoveryURLs = []string{url}