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cmd/geth, p2p: add support for custom discovery UDP port (#24979)
This adds a new flag to set the discovery port to be different from the TCP listener port. Co-authored-by: Felix Lange <fjl@twurst.com>
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parent
1438e7c324
commit
9a5c1000c7
@ -119,6 +119,7 @@ var (
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utils.CachePreimagesFlag,
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utils.FDLimitFlag,
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utils.ListenPortFlag,
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utils.DiscoveryPortFlag,
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utils.MaxPeersFlag,
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utils.MaxPendingPeersFlag,
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utils.MiningEnabledFlag,
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@ -835,6 +835,12 @@ var (
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Usage: "Sets DNS discovery entry points (use \"\" to disable DNS)",
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Category: flags.NetworkingCategory,
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}
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DiscoveryPortFlag = &cli.IntFlag{
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Name: "discovery.port",
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Usage: "Use a custom UDP port for P2P discovery",
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Value: 30303,
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Category: flags.NetworkingCategory,
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}
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// Console
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JSpathFlag = &flags.DirectoryFlag{
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@ -1116,12 +1122,15 @@ func setBootstrapNodesV5(ctx *cli.Context, cfg *p2p.Config) {
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}
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}
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// setListenAddress creates a TCP listening address string from set command
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// line flags.
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// setListenAddress creates TCP/UDP listening address strings from set command
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// line flags
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func setListenAddress(ctx *cli.Context, cfg *p2p.Config) {
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if ctx.IsSet(ListenPortFlag.Name) {
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cfg.ListenAddr = fmt.Sprintf(":%d", ctx.Int(ListenPortFlag.Name))
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}
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if ctx.IsSet(DiscoveryPortFlag.Name) {
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cfg.DiscAddr = fmt.Sprintf(":%d", ctx.Int(DiscoveryPortFlag.Name))
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}
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}
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// setNAT creates a port mapper from command line flags.
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@ -136,6 +136,10 @@ type Config struct {
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// the server is started.
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ListenAddr string
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// If DiscAddr is set to a non-nil value, the server will use ListenAddr
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// for TCP and DiscAddr for the UDP discovery protocol.
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DiscAddr string
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// If set to a non-nil value, the given NAT port mapper
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// is used to make the listening port available to the
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// Internet.
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@ -549,7 +553,15 @@ func (srv *Server) setupDiscovery() error {
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return nil
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}
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addr, err := net.ResolveUDPAddr("udp", srv.ListenAddr)
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listenAddr := srv.ListenAddr
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// Use an alternate listening address for UDP if
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// a custom discovery address is configured.
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if srv.DiscAddr != "" {
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listenAddr = srv.DiscAddr
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}
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addr, err := net.ResolveUDPAddr("udp", listenAddr)
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if err != nil {
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return err
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}
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