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cmd/devp2p, p2p: dial using node iterator, discovery crawler (#20132)

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* p2p/enode: add Iterator and associated utilities

* p2p/discover: add RandomNodes iterator

* p2p: dial using iterator

* cmd/devp2p: add discv4 crawler

* cmd/devp2p: WIP nodeset filter

* cmd/devp2p: fixup lesFilter

* core/forkid: add NewStaticFilter

* cmd/devp2p: make -eth-network filter actually work

* cmd/devp2p: improve crawl timestamp handling

* cmd/devp2p: fix typo

* p2p/enode: fix comment typos

* p2p/discover: fix comment typos

* p2p/discover: rename lookup.next to 'advance'

* p2p: lower discovery mixer timeout

* p2p/enode: implement dynamic FairMix timeouts

* cmd/devp2p: add ropsten support in -eth-network filter

* cmd/devp2p: tweak crawler log message
This commit is contained in:
Felix Lange
2019-10-29 16:08:57 +01:00
committed by Péter Szilágyi
parent b0b277525c
commit 2c37142d2f
19 changed files with 1559 additions and 414 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
cmd/devp2p/nodeset.go
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@ -21,7 +21,9 @@ import (
"encoding/json"
"fmt"
"io/ioutil"
"os"
"sort"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/p2p/enode"
@ -36,6 +38,15 @@ type nodeSet map[enode.ID]nodeJSON
type nodeJSON struct {
Seq uint64 `json:"seq"`
N *enode.Node `json:"record"`
// The score tracks how many liveness checks were performed. It is incremented by one
// every time the node passes a check, and halved every time it doesn't.
Score int `json:"score,omitempty"`
// These two track the time of last successful contact.
FirstResponse time.Time `json:"firstResponse,omitempty"`
LastResponse time.Time `json:"lastResponse,omitempty"`
// This one tracks the time of our last attempt to contact the node.
LastCheck time.Time `json:"lastCheck,omitempty"`
}
func loadNodesJSON(file string) nodeSet {
@ -51,6 +62,10 @@ func writeNodesJSON(file string, nodes nodeSet) {
if err != nil {
exit(err)
}
if file == "-" {
os.Stdout.Write(nodesJSON)
return
}
if err := ioutil.WriteFile(file, nodesJSON, 0644); err != nil {
exit(err)
}