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cmd/devp2p: add disc4 randomwalk command

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This commit is contained in:
Felix Lange 2019-07-05 12:05:37 +02:00
parent 61c4079496
commit aeffde1dc4
1 changed files with 23 additions and 0 deletions
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23
cmd/devp2p/discv4cmd.go
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@ -17,6 +17,7 @@
package main
import (
"context"
"fmt"
"net"
"sort"
@ -38,6 +39,7 @@ var (
discv4PingCommand,
discv4RequestRecordCommand,
discv4ResolveCommand,
discv4RandomWalkCommand,
},
}
discv4PingCommand = cli.Command{
@ -56,6 +58,12 @@ var (
Action: discv4Resolve,
Flags: []cli.Flag{bootnodesFlag},
}
discv4RandomWalkCommand = cli.Command{
Name: "randomwalk",
Usage: "Prints random nodes found in the DHT",
Action: discv4RandomNodes,
Flags: []cli.Flag{bootnodesFlag},
}
)
var bootnodesFlag = cli.StringFlag{
@ -104,6 +112,21 @@ func discv4Resolve(ctx *cli.Context) error {
return nil
}
func discv4RandomNodes(ctx *cli.Context) error {
bootnodes, err := parseBootnodes(ctx)
if err != nil {
return err
}
disc, err := startV4(bootnodes)
if err != nil {
return err
}
iter := disc.RandomNodes()
for {
fmt.Println(iter.NextNode(context.Background()))
}
}
func getNodeArgAndStartV4(ctx *cli.Context) (*enode.Node, *discover.UDPv4, error) {
if ctx.NArg() != 1 {
return nil, nil, fmt.Errorf("missing node as command-line argument")