forked from cerc-io/plugeth
p2p/discv5: add deprecation warning and remove unused code (#20367)
* p2p/discv5: add deprecation warning and remove unused code * p2p/discv5: remove unused variables
This commit is contained in:
Felix Lange
Péter Szilágyi
parent
0abcf03fde
commit
fdff182f11
4
p2p/discv5/README
Normal file
4
p2p/discv5/README
Normal file
@ -0,0 +1,4 @@
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This package is an early prototype of Discovery v5. Do not use this code.
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See https://github.com/ethereum/devp2p/blob/master/discv5/discv5.md for the
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current Discovery v5 specification.
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@ -62,7 +62,6 @@ var (
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nodeDBDiscoverPing = nodeDBDiscoverRoot + ":lastping"
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nodeDBDiscoverPong = nodeDBDiscoverRoot + ":lastpong"
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nodeDBDiscoverFindFails = nodeDBDiscoverRoot + ":findfail"
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nodeDBDiscoverLocalEndpoint = nodeDBDiscoverRoot + ":localendpoint"
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nodeDBTopicRegTickets = ":tickets"
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)
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@ -311,20 +310,6 @@ func (db *nodeDB) updateFindFails(id NodeID, fails int) error {
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return db.storeInt64(makeKey(id, nodeDBDiscoverFindFails), int64(fails))
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}
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// localEndpoint returns the last local endpoint communicated to the
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// given remote node.
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func (db *nodeDB) localEndpoint(id NodeID) *rpcEndpoint {
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var ep rpcEndpoint
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if err := db.fetchRLP(makeKey(id, nodeDBDiscoverLocalEndpoint), &ep); err != nil {
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return nil
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}
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return &ep
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}
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func (db *nodeDB) updateLocalEndpoint(id NodeID, ep rpcEndpoint) error {
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return db.storeRLP(makeKey(id, nodeDBDiscoverLocalEndpoint), &ep)
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}
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// querySeeds retrieves random nodes to be used as potential seed nodes
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// for bootstrapping.
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func (db *nodeDB) querySeeds(n int, maxAge time.Duration) []*Node {
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@ -77,14 +77,6 @@ type Network struct {
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nursery []*Node
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nodes map[NodeID]*Node // tracks active nodes with state != known
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timeoutTimers map[timeoutEvent]*time.Timer
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// Revalidation queues.
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// Nodes put on these queues will be pinged eventually.
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slowRevalidateQueue []*Node
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fastRevalidateQueue []*Node
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// Buffers for state transition.
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sendBuf []*ingressPacket
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}
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// transport is implemented by the UDP transport.
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@ -107,7 +99,6 @@ type findnodeQuery struct {
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remote *Node
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target common.Hash
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reply chan<- []*Node
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nresults int // counter for received nodes
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}
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type topicRegisterReq struct {
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@ -650,10 +641,10 @@ loop:
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if net.conn != nil {
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net.conn.Close()
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}
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if refreshDone != nil {
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// TODO: wait for pending refresh.
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// if refreshDone != nil {
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// <-refreshResults
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}
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// }
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// Cancel all pending timeouts.
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for _, timer := range net.timeoutTimers {
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timer.Stop()
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@ -17,7 +17,6 @@
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package discv5
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import (
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"fmt"
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"net"
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"testing"
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"time"
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@ -265,10 +264,6 @@ type preminedTestnet struct {
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net *Network
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}
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func (tn *preminedTestnet) sendFindnode(to *Node, target NodeID) {
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panic("sendFindnode called")
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}
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func (tn *preminedTestnet) sendFindnodeHash(to *Node, target common.Hash) {
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// current log distance is encoded in port number
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// fmt.Println("findnode query at dist", toaddr.Port)
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@ -316,10 +311,6 @@ func (tn *preminedTestnet) sendNeighbours(to *Node, nodes []*Node) {
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panic("sendNeighbours called")
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}
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func (tn *preminedTestnet) sendTopicQuery(to *Node, topic Topic) {
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panic("sendTopicQuery called")
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}
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func (tn *preminedTestnet) sendTopicNodes(to *Node, queryHash common.Hash, nodes []*Node) {
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panic("sendTopicNodes called")
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}
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@ -334,41 +325,6 @@ func (*preminedTestnet) localAddr() *net.UDPAddr {
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return &net.UDPAddr{IP: net.ParseIP("10.0.1.1"), Port: 40000}
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}
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// mine generates a testnet struct literal with nodes at
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// various distances to the given target.
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func (tn *preminedTestnet) mine(target NodeID) {
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tn.target = target
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tn.targetSha = crypto.Keccak256Hash(tn.target[:])
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found := 0
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for found < bucketSize*10 {
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k := newkey()
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id := PubkeyID(&k.PublicKey)
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sha := crypto.Keccak256Hash(id[:])
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ld := logdist(tn.targetSha, sha)
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if len(tn.dists[ld]) < bucketSize {
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tn.dists[ld] = append(tn.dists[ld], id)
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fmt.Println("found ID with ld", ld)
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found++
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}
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}
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fmt.Println("&preminedTestnet{")
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fmt.Printf(" target: %#v,\n", tn.target)
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fmt.Printf(" targetSha: %#v,\n", tn.targetSha)
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fmt.Printf(" dists: [%d][]NodeID{\n", len(tn.dists))
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for ld, ns := range &tn.dists {
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if len(ns) == 0 {
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continue
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}
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fmt.Printf(" %d: []NodeID{\n", ld)
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for _, n := range ns {
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fmt.Printf(" MustHexID(\"%x\"),\n", n[:])
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}
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fmt.Println(" },")
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}
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fmt.Println(" },")
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fmt.Println("}")
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}
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func injectResponse(net *Network, from *Node, ev nodeEvent, packet interface{}) {
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go net.reqReadPacket(ingressPacket{remoteID: from.ID, remoteAddr: from.addr(), ev: ev, data: packet})
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}
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@ -66,23 +66,6 @@ func (n *Node) addr() *net.UDPAddr {
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return &net.UDPAddr{IP: n.IP, Port: int(n.UDP)}
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}
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func (n *Node) setAddr(a *net.UDPAddr) {
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n.IP = a.IP
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if ipv4 := a.IP.To4(); ipv4 != nil {
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n.IP = ipv4
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}
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n.UDP = uint16(a.Port)
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}
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// compares the given address against the stored values.
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func (n *Node) addrEqual(a *net.UDPAddr) bool {
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ip := a.IP
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if ipv4 := a.IP.To4(); ipv4 != nil {
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ip = ipv4
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}
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return n.UDP == uint16(a.Port) && n.IP.Equal(ip)
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}
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// Incomplete returns true for nodes with no IP address.
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func (n *Node) Incomplete() bool {
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return n.IP == nil
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@ -326,14 +309,6 @@ func (n NodeID) Pubkey() (*ecdsa.PublicKey, error) {
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return p, nil
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}
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func (id NodeID) mustPubkey() ecdsa.PublicKey {
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pk, err := id.Pubkey()
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if err != nil {
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panic(err)
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}
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return *pk
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}
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// recoverNodeID computes the public key used to sign the
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// given hash from the signature.
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func recoverNodeID(hash, sig []byte) (id NodeID, err error) {
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@ -1,126 +0,0 @@
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// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// Contains the NTP time drift detection via the SNTP protocol:
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// https://tools.ietf.org/html/rfc4330
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package discv5
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import (
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"fmt"
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"net"
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"sort"
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"strings"
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"time"
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"github.com/ethereum/go-ethereum/log"
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)
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const (
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ntpPool = "pool.ntp.org" // ntpPool is the NTP server to query for the current time
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ntpChecks = 3 // Number of measurements to do against the NTP server
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)
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// durationSlice attaches the methods of sort.Interface to []time.Duration,
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// sorting in increasing order.
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type durationSlice []time.Duration
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func (s durationSlice) Len() int { return len(s) }
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func (s durationSlice) Less(i, j int) bool { return s[i] < s[j] }
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func (s durationSlice) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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// checkClockDrift queries an NTP server for clock drifts and warns the user if
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// one large enough is detected.
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func checkClockDrift() {
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drift, err := sntpDrift(ntpChecks)
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if err != nil {
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return
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}
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if drift < -driftThreshold || drift > driftThreshold {
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warning := fmt.Sprintf("System clock seems off by %v, which can prevent network connectivity", drift)
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howtofix := fmt.Sprintf("Please enable network time synchronisation in system settings")
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separator := strings.Repeat("-", len(warning))
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log.Warn(separator)
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log.Warn(warning)
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log.Warn(howtofix)
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log.Warn(separator)
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} else {
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log.Debug(fmt.Sprintf("Sanity NTP check reported %v drift, all ok", drift))
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}
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}
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// sntpDrift does a naive time resolution against an NTP server and returns the
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// measured drift. This method uses the simple version of NTP. It's not precise
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// but should be fine for these purposes.
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//
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// Note, it executes two extra measurements compared to the number of requested
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// ones to be able to discard the two extremes as outliers.
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func sntpDrift(measurements int) (time.Duration, error) {
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// Resolve the address of the NTP server
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addr, err := net.ResolveUDPAddr("udp", ntpPool+":123")
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if err != nil {
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return 0, err
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}
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// Construct the time request (empty package with only 2 fields set):
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// Bits 3-5: Protocol version, 3
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// Bits 6-8: Mode of operation, client, 3
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request := make([]byte, 48)
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request[0] = 3<<3 | 3
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// Execute each of the measurements
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drifts := []time.Duration{}
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for i := 0; i < measurements+2; i++ {
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// Dial the NTP server and send the time retrieval request
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conn, err := net.DialUDP("udp", nil, addr)
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if err != nil {
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return 0, err
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}
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defer conn.Close()
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sent := time.Now()
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if _, err = conn.Write(request); err != nil {
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return 0, err
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}
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// Retrieve the reply and calculate the elapsed time
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conn.SetDeadline(time.Now().Add(5 * time.Second))
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reply := make([]byte, 48)
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if _, err = conn.Read(reply); err != nil {
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return 0, err
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}
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elapsed := time.Since(sent)
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// Reconstruct the time from the reply data
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sec := uint64(reply[43]) | uint64(reply[42])<<8 | uint64(reply[41])<<16 | uint64(reply[40])<<24
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frac := uint64(reply[47]) | uint64(reply[46])<<8 | uint64(reply[45])<<16 | uint64(reply[44])<<24
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nanosec := sec*1e9 + (frac*1e9)>>32
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t := time.Date(1900, 1, 1, 0, 0, 0, 0, time.UTC).Add(time.Duration(nanosec)).Local()
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// Calculate the drift based on an assumed answer time of RRT/2
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drifts = append(drifts, sent.Sub(t)+elapsed/2)
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}
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// Calculate average drif (drop two extremities to avoid outliers)
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sort.Sort(durationSlice(drifts))
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drift := time.Duration(0)
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for i := 1; i < len(drifts)-1; i++ {
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drift += drifts[i]
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}
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return drift / time.Duration(measurements), nil
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}
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@ -294,15 +294,6 @@ func (s *simulation) launchNode(log bool) *Network {
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return net
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}
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func (s *simulation) dropNode(id NodeID) {
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s.mu.Lock()
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n := s.nodes[id]
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delete(s.nodes, id)
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s.mu.Unlock()
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n.Close()
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}
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type simTransport struct {
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joinTime time.Time
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sender NodeID
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@ -358,22 +349,6 @@ func (st *simTransport) sendPing(remote *Node, remoteAddr *net.UDPAddr, topics [
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return hash
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}
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func (st *simTransport) sendPong(remote *Node, pingHash []byte) {
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raddr := remote.addr()
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st.sendPacket(remote.ID, ingressPacket{
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remoteID: st.sender,
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remoteAddr: st.senderAddr,
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hash: st.nextHash(),
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ev: pongPacket,
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data: &pong{
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To: rpcEndpoint{IP: raddr.IP, UDP: uint16(raddr.Port), TCP: 30303},
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ReplyTok: pingHash,
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Expiration: uint64(time.Now().Unix() + int64(expiration)),
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},
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})
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}
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func (st *simTransport) sendFindnodeHash(remote *Node, target common.Hash) {
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st.sendPacket(remote.ID, ingressPacket{
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remoteID: st.sender,
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@ -14,12 +14,8 @@
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// Package discv5 implements the RLPx v5 Topic Discovery Protocol.
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//
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// The Topic Discovery protocol provides a way to find RLPx nodes that
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// can be connected to. It uses a Kademlia-like protocol to maintain a
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// distributed database of the IDs and endpoints of all listening
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// nodes.
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// Package discv5 is a prototype implementation of Discvery v5.
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// Deprecated: do not use this package.
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package discv5
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import (
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@ -31,72 +31,6 @@ import (
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"github.com/ethereum/go-ethereum/crypto"
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)
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type nullTransport struct{}
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func (nullTransport) sendPing(remote *Node, remoteAddr *net.UDPAddr) []byte { return []byte{1} }
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func (nullTransport) sendPong(remote *Node, pingHash []byte) {}
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func (nullTransport) sendFindnode(remote *Node, target NodeID) {}
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func (nullTransport) sendNeighbours(remote *Node, nodes []*Node) {}
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func (nullTransport) localAddr() *net.UDPAddr { return new(net.UDPAddr) }
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func (nullTransport) Close() {}
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// func TestTable_pingReplace(t *testing.T) {
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// doit := func(newNodeIsResponding, lastInBucketIsResponding bool) {
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// transport := newPingRecorder()
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// tab, _ := newTable(transport, NodeID{}, &net.UDPAddr{})
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// defer tab.Close()
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// pingSender := NewNode(MustHexID("a502af0f59b2aab7746995408c79e9ca312d2793cc997e44fc55eda62f0150bbb8c59a6f9269ba3a081518b62699ee807c7c19c20125ddfccca872608af9e370"), net.IP{}, 99, 99)
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//
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// // fill up the sender's bucket.
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// last := fillBucket(tab, 253)
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//
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// // this call to bond should replace the last node
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// // in its bucket if the node is not responding.
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// transport.responding[last.ID] = lastInBucketIsResponding
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// transport.responding[pingSender.ID] = newNodeIsResponding
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// tab.bond(true, pingSender.ID, &net.UDPAddr{}, 0)
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//
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// // first ping goes to sender (bonding pingback)
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// if !transport.pinged[pingSender.ID] {
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// t.Error("table did not ping back sender")
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// }
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// if newNodeIsResponding {
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// // second ping goes to oldest node in bucket
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// // to see whether it is still alive.
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// if !transport.pinged[last.ID] {
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// t.Error("table did not ping last node in bucket")
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// }
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// }
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//
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// tab.mutex.Lock()
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// defer tab.mutex.Unlock()
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// if l := len(tab.buckets[253].entries); l != bucketSize {
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// t.Errorf("wrong bucket size after bond: got %d, want %d", l, bucketSize)
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// }
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//
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// if lastInBucketIsResponding || !newNodeIsResponding {
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// if !contains(tab.buckets[253].entries, last.ID) {
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// t.Error("last entry was removed")
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// }
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// if contains(tab.buckets[253].entries, pingSender.ID) {
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// t.Error("new entry was added")
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// }
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// } else {
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// if contains(tab.buckets[253].entries, last.ID) {
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// t.Error("last entry was not removed")
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// }
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// if !contains(tab.buckets[253].entries, pingSender.ID) {
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// t.Error("new entry was not added")
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// }
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// }
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// }
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//
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// doit(true, true)
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// doit(false, true)
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// doit(true, false)
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// doit(false, false)
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// }
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func TestBucket_bumpNoDuplicates(t *testing.T) {
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t.Parallel()
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cfg := &quick.Config{
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@ -139,17 +73,6 @@ func TestBucket_bumpNoDuplicates(t *testing.T) {
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}
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}
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// fillBucket inserts nodes into the given bucket until
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// it is full. The node's IDs dont correspond to their
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// hashes.
|
||||
func fillBucket(tab *Table, ld int) (last *Node) {
|
||||
b := tab.buckets[ld]
|
||||
for len(b.entries) < bucketSize {
|
||||
b.entries = append(b.entries, nodeAtDistance(tab.self.sha, ld))
|
||||
}
|
||||
return b.entries[bucketSize-1]
|
||||
}
|
||||
|
||||
// nodeAtDistance creates a node for which logdist(base, n.sha) == ld.
|
||||
// The node's ID does not correspond to n.sha.
|
||||
func nodeAtDistance(base common.Hash, ld int) (n *Node) {
|
||||
@ -159,28 +82,6 @@ func nodeAtDistance(base common.Hash, ld int) (n *Node) {
|
||||
return n
|
||||
}
|
||||
|
||||
type pingRecorder struct{ responding, pinged map[NodeID]bool }
|
||||
|
||||
func newPingRecorder() *pingRecorder {
|
||||
return &pingRecorder{make(map[NodeID]bool), make(map[NodeID]bool)}
|
||||
}
|
||||
|
||||
func (t *pingRecorder) findnode(toid NodeID, toaddr *net.UDPAddr, target NodeID) ([]*Node, error) {
|
||||
panic("findnode called on pingRecorder")
|
||||
}
|
||||
func (t *pingRecorder) close() {}
|
||||
func (t *pingRecorder) waitping(from NodeID) error {
|
||||
return nil // remote always pings
|
||||
}
|
||||
func (t *pingRecorder) ping(toid NodeID, toaddr *net.UDPAddr) error {
|
||||
t.pinged[toid] = true
|
||||
if t.responding[toid] {
|
||||
return nil
|
||||
} else {
|
||||
return errTimeout
|
||||
}
|
||||
}
|
||||
|
||||
func TestTable_closest(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
|
||||
@ -22,7 +22,6 @@ import (
|
||||
"fmt"
|
||||
"math"
|
||||
"math/rand"
|
||||
"sort"
|
||||
"time"
|
||||
|
||||
"github.com/ethereum/go-ethereum/common"
|
||||
@ -33,8 +32,6 @@ import (
|
||||
|
||||
const (
|
||||
ticketTimeBucketLen = time.Minute
|
||||
timeWindow = 10 // * ticketTimeBucketLen
|
||||
wantTicketsInWindow = 10
|
||||
collectFrequency = time.Second * 30
|
||||
registerFrequency = time.Second * 60
|
||||
maxCollectDebt = 10
|
||||
@ -139,7 +136,6 @@ type ticketStore struct {
|
||||
|
||||
lastBucketFetched timeBucket
|
||||
nextTicketCached *ticketRef
|
||||
nextTicketReg mclock.AbsTime
|
||||
|
||||
searchTopicMap map[Topic]searchTopic
|
||||
nextTopicQueryCleanup mclock.AbsTime
|
||||
@ -268,57 +264,6 @@ func (s *ticketStore) nextSearchLookup(topic Topic) lookupInfo {
|
||||
return target
|
||||
}
|
||||
|
||||
// ticketsInWindow returns the tickets of a given topic in the registration window.
|
||||
func (s *ticketStore) ticketsInWindow(topic Topic) []ticketRef {
|
||||
// Sanity check that the topic still exists before operating on it
|
||||
if s.tickets[topic] == nil {
|
||||
log.Warn("Listing non-existing discovery tickets", "topic", topic)
|
||||
return nil
|
||||
}
|
||||
// Gather all the tickers in the next time window
|
||||
var tickets []ticketRef
|
||||
|
||||
buckets := s.tickets[topic].buckets
|
||||
for idx := timeBucket(0); idx < timeWindow; idx++ {
|
||||
tickets = append(tickets, buckets[s.lastBucketFetched+idx]...)
|
||||
}
|
||||
log.Trace("Retrieved discovery registration tickets", "topic", topic, "from", s.lastBucketFetched, "tickets", len(tickets))
|
||||
return tickets
|
||||
}
|
||||
|
||||
func (s *ticketStore) removeExcessTickets(t Topic) {
|
||||
tickets := s.ticketsInWindow(t)
|
||||
if len(tickets) <= wantTicketsInWindow {
|
||||
return
|
||||
}
|
||||
sort.Sort(ticketRefByWaitTime(tickets))
|
||||
for _, r := range tickets[wantTicketsInWindow:] {
|
||||
s.removeTicketRef(r)
|
||||
}
|
||||
}
|
||||
|
||||
type ticketRefByWaitTime []ticketRef
|
||||
|
||||
// Len is the number of elements in the collection.
|
||||
func (s ticketRefByWaitTime) Len() int {
|
||||
return len(s)
|
||||
}
|
||||
|
||||
func (ref ticketRef) waitTime() mclock.AbsTime {
|
||||
return ref.t.regTime[ref.idx] - ref.t.issueTime
|
||||
}
|
||||
|
||||
// Less reports whether the element with
|
||||
// index i should sort before the element with index j.
|
||||
func (s ticketRefByWaitTime) Less(i, j int) bool {
|
||||
return s[i].waitTime() < s[j].waitTime()
|
||||
}
|
||||
|
||||
// Swap swaps the elements with indexes i and j.
|
||||
func (s ticketRefByWaitTime) Swap(i, j int) {
|
||||
s[i], s[j] = s[j], s[i]
|
||||
}
|
||||
|
||||
func (s *ticketStore) addTicketRef(r ticketRef) {
|
||||
topic := r.t.topics[r.idx]
|
||||
tickets := s.tickets[topic]
|
||||
@ -565,15 +510,6 @@ func (s *ticketStore) addTicket(localTime mclock.AbsTime, pingHash []byte, ticke
|
||||
}
|
||||
}
|
||||
|
||||
func (s *ticketStore) getNodeTicket(node *Node) *ticket {
|
||||
if s.nodes[node] == nil {
|
||||
log.Trace("Retrieving node ticket", "node", node.ID, "serial", nil)
|
||||
} else {
|
||||
log.Trace("Retrieving node ticket", "node", node.ID, "serial", s.nodes[node].serial)
|
||||
}
|
||||
return s.nodes[node]
|
||||
}
|
||||
|
||||
func (s *ticketStore) canQueryTopic(node *Node, topic Topic) bool {
|
||||
qq := s.queriesSent[node]
|
||||
if qq != nil {
|
||||
@ -770,12 +706,6 @@ func globalRandRead(b []byte) {
|
||||
}
|
||||
}
|
||||
|
||||
func (r *topicRadius) isInRadius(addrHash common.Hash) bool {
|
||||
nodePrefix := binary.BigEndian.Uint64(addrHash[0:8])
|
||||
dist := nodePrefix ^ r.topicHashPrefix
|
||||
return dist < r.radius
|
||||
}
|
||||
|
||||
func (r *topicRadius) chooseLookupBucket(a, b int) int {
|
||||
if a < 0 {
|
||||
a = 0
|
||||
|
||||
@ -27,7 +27,6 @@ import (
|
||||
"github.com/ethereum/go-ethereum/common"
|
||||
"github.com/ethereum/go-ethereum/crypto"
|
||||
"github.com/ethereum/go-ethereum/log"
|
||||
"github.com/ethereum/go-ethereum/p2p/nat"
|
||||
"github.com/ethereum/go-ethereum/p2p/netutil"
|
||||
"github.com/ethereum/go-ethereum/rlp"
|
||||
)
|
||||
@ -38,15 +37,12 @@ const Version = 4
|
||||
var (
|
||||
errPacketTooSmall = errors.New("too small")
|
||||
errBadPrefix = errors.New("bad prefix")
|
||||
errTimeout = errors.New("RPC timeout")
|
||||
)
|
||||
|
||||
// Timeouts
|
||||
const (
|
||||
respTimeout = 500 * time.Millisecond
|
||||
expiration = 20 * time.Second
|
||||
|
||||
driftThreshold = 10 * time.Second // Allowed clock drift before warning user
|
||||
)
|
||||
|
||||
// RPC request structures
|
||||
@ -187,10 +183,6 @@ func makeEndpoint(addr *net.UDPAddr, tcpPort uint16) rpcEndpoint {
|
||||
return rpcEndpoint{IP: ip, UDP: uint16(addr.Port), TCP: tcpPort}
|
||||
}
|
||||
|
||||
func (e1 rpcEndpoint) equal(e2 rpcEndpoint) bool {
|
||||
return e1.UDP == e2.UDP && e1.TCP == e2.TCP && e1.IP.Equal(e2.IP)
|
||||
}
|
||||
|
||||
func nodeFromRPC(sender *net.UDPAddr, rn rpcNode) (*Node, error) {
|
||||
if err := netutil.CheckRelayIP(sender.IP, rn.IP); err != nil {
|
||||
return nil, err
|
||||
@ -225,7 +217,6 @@ type udp struct {
|
||||
conn conn
|
||||
priv *ecdsa.PrivateKey
|
||||
ourEndpoint rpcEndpoint
|
||||
nat nat.Interface
|
||||
net *Network
|
||||
}
|
||||
|
||||
@ -274,13 +265,6 @@ func (t *udp) sendPing(remote *Node, toaddr *net.UDPAddr, topics []Topic) (hash
|
||||
return hash
|
||||
}
|
||||
|
||||
func (t *udp) sendFindnode(remote *Node, target NodeID) {
|
||||
t.sendPacket(remote.ID, remote.addr(), byte(findnodePacket), findnode{
|
||||
Target: target,
|
||||
Expiration: uint64(time.Now().Add(expiration).Unix()),
|
||||
})
|
||||
}
|
||||
|
||||
func (t *udp) sendNeighbours(remote *Node, results []*Node) {
|
||||
// Send neighbors in chunks with at most maxNeighbors per packet
|
||||
// to stay below the 1280 byte limit.
|
||||
|
||||
@ -1,450 +0,0 @@
|
||||
// Copyright 2016 The go-ethereum Authors
|
||||
// This file is part of the go-ethereum library.
|
||||
//
|
||||
// The go-ethereum library is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU Lesser General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// The go-ethereum library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU Lesser General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU Lesser General Public License
|
||||
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
package discv5
|
||||
|
||||
import (
|
||||
"encoding/hex"
|
||||
"errors"
|
||||
"io"
|
||||
"net"
|
||||
"reflect"
|
||||
"sync"
|
||||
"testing"
|
||||
|
||||
"github.com/davecgh/go-spew/spew"
|
||||
"github.com/ethereum/go-ethereum/common"
|
||||
"github.com/ethereum/go-ethereum/crypto"
|
||||
"github.com/ethereum/go-ethereum/rlp"
|
||||
)
|
||||
|
||||
func init() {
|
||||
spew.Config.DisableMethods = true
|
||||
}
|
||||
|
||||
// shared test variables
|
||||
var (
|
||||
testLocal = rpcEndpoint{IP: net.ParseIP("3.3.3.3").To4(), UDP: 5, TCP: 6}
|
||||
)
|
||||
|
||||
// type udpTest struct {
|
||||
// t *testing.T
|
||||
// pipe *dgramPipe
|
||||
// table *Table
|
||||
// udp *udp
|
||||
// sent [][]byte
|
||||
// localkey, remotekey *ecdsa.PrivateKey
|
||||
// remoteaddr *net.UDPAddr
|
||||
// }
|
||||
//
|
||||
// func newUDPTest(t *testing.T) *udpTest {
|
||||
// test := &udpTest{
|
||||
// t: t,
|
||||
// pipe: newpipe(),
|
||||
// localkey: newkey(),
|
||||
// remotekey: newkey(),
|
||||
// remoteaddr: &net.UDPAddr{IP: net.IP{1, 2, 3, 4}, Port: 30303},
|
||||
// }
|
||||
// test.table, test.udp, _ = newUDP(test.localkey, test.pipe, nil, "")
|
||||
// return test
|
||||
// }
|
||||
//
|
||||
// // handles a packet as if it had been sent to the transport.
|
||||
// func (test *udpTest) packetIn(wantError error, ptype byte, data packet) error {
|
||||
// enc, err := encodePacket(test.remotekey, ptype, data)
|
||||
// if err != nil {
|
||||
// return test.errorf("packet (%d) encode error: %v", ptype, err)
|
||||
// }
|
||||
// test.sent = append(test.sent, enc)
|
||||
// if err = test.udp.handlePacket(test.remoteaddr, enc); err != wantError {
|
||||
// return test.errorf("error mismatch: got %q, want %q", err, wantError)
|
||||
// }
|
||||
// return nil
|
||||
// }
|
||||
//
|
||||
// // waits for a packet to be sent by the transport.
|
||||
// // validate should have type func(*udpTest, X) error, where X is a packet type.
|
||||
// func (test *udpTest) waitPacketOut(validate interface{}) error {
|
||||
// dgram := test.pipe.waitPacketOut()
|
||||
// p, _, _, err := decodePacket(dgram)
|
||||
// if err != nil {
|
||||
// return test.errorf("sent packet decode error: %v", err)
|
||||
// }
|
||||
// fn := reflect.ValueOf(validate)
|
||||
// exptype := fn.Type().In(0)
|
||||
// if reflect.TypeOf(p) != exptype {
|
||||
// return test.errorf("sent packet type mismatch, got: %v, want: %v", reflect.TypeOf(p), exptype)
|
||||
// }
|
||||
// fn.Call([]reflect.Value{reflect.ValueOf(p)})
|
||||
// return nil
|
||||
// }
|
||||
//
|
||||
// func (test *udpTest) errorf(format string, args ...interface{}) error {
|
||||
// _, file, line, ok := runtime.Caller(2) // errorf + waitPacketOut
|
||||
// if ok {
|
||||
// file = filepath.Base(file)
|
||||
// } else {
|
||||
// file = "???"
|
||||
// line = 1
|
||||
// }
|
||||
// err := fmt.Errorf(format, args...)
|
||||
// fmt.Printf("\t%s:%d: %v\n", file, line, err)
|
||||
// test.t.Fail()
|
||||
// return err
|
||||
// }
|
||||
//
|
||||
// func TestUDP_packetErrors(t *testing.T) {
|
||||
// test := newUDPTest(t)
|
||||
// defer test.table.Close()
|
||||
//
|
||||
// test.packetIn(errExpired, pingPacket, &ping{From: testRemote, To: testLocalAnnounced, Version: Version})
|
||||
// test.packetIn(errUnsolicitedReply, pongPacket, &pong{ReplyTok: []byte{}, Expiration: futureExp})
|
||||
// test.packetIn(errUnknownNode, findnodePacket, &findnode{Expiration: futureExp})
|
||||
// test.packetIn(errUnsolicitedReply, neighborsPacket, &neighbors{Expiration: futureExp})
|
||||
// }
|
||||
//
|
||||
// func TestUDP_findnode(t *testing.T) {
|
||||
// test := newUDPTest(t)
|
||||
// defer test.table.Close()
|
||||
//
|
||||
// // put a few nodes into the table. their exact
|
||||
// // distribution shouldn't matter much, although we need to
|
||||
// // take care not to overflow any bucket.
|
||||
// targetHash := crypto.Keccak256Hash(testTarget[:])
|
||||
// nodes := &nodesByDistance{target: targetHash}
|
||||
// for i := 0; i < bucketSize; i++ {
|
||||
// nodes.push(nodeAtDistance(test.table.self.sha, i+2), bucketSize)
|
||||
// }
|
||||
// test.table.stuff(nodes.entries)
|
||||
//
|
||||
// // ensure there's a bond with the test node,
|
||||
// // findnode won't be accepted otherwise.
|
||||
// test.table.db.updateNode(NewNode(
|
||||
// PubkeyID(&test.remotekey.PublicKey),
|
||||
// test.remoteaddr.IP,
|
||||
// uint16(test.remoteaddr.Port),
|
||||
// 99,
|
||||
// ))
|
||||
// // check that closest neighbors are returned.
|
||||
// test.packetIn(nil, findnodePacket, &findnode{Target: testTarget, Expiration: futureExp})
|
||||
// expected := test.table.closest(targetHash, bucketSize)
|
||||
//
|
||||
// waitNeighbors := func(want []*Node) {
|
||||
// test.waitPacketOut(func(p *neighbors) {
|
||||
// if len(p.Nodes) != len(want) {
|
||||
// t.Errorf("wrong number of results: got %d, want %d", len(p.Nodes), bucketSize)
|
||||
// }
|
||||
// for i := range p.Nodes {
|
||||
// if p.Nodes[i].ID != want[i].ID {
|
||||
// t.Errorf("result mismatch at %d:\n got: %v\n want: %v", i, p.Nodes[i], expected.entries[i])
|
||||
// }
|
||||
// }
|
||||
// })
|
||||
// }
|
||||
// waitNeighbors(expected.entries[:maxNeighbors])
|
||||
// waitNeighbors(expected.entries[maxNeighbors:])
|
||||
// }
|
||||
//
|
||||
// func TestUDP_findnodeMultiReply(t *testing.T) {
|
||||
// test := newUDPTest(t)
|
||||
// defer test.table.Close()
|
||||
//
|
||||
// // queue a pending findnode request
|
||||
// resultc, errc := make(chan []*Node), make(chan error)
|
||||
// go func() {
|
||||
// rid := PubkeyID(&test.remotekey.PublicKey)
|
||||
// ns, err := test.udp.findnode(rid, test.remoteaddr, testTarget)
|
||||
// if err != nil && len(ns) == 0 {
|
||||
// errc <- err
|
||||
// } else {
|
||||
// resultc <- ns
|
||||
// }
|
||||
// }()
|
||||
//
|
||||
// // wait for the findnode to be sent.
|
||||
// // after it is sent, the transport is waiting for a reply
|
||||
// test.waitPacketOut(func(p *findnode) {
|
||||
// if p.Target != testTarget {
|
||||
// t.Errorf("wrong target: got %v, want %v", p.Target, testTarget)
|
||||
// }
|
||||
// })
|
||||
//
|
||||
// // send the reply as two packets.
|
||||
// list := []*Node{
|
||||
// MustParseNode("enode://ba85011c70bcc5c04d8607d3a0ed29aa6179c092cbdda10d5d32684fb33ed01bd94f588ca8f91ac48318087dcb02eaf36773a7a453f0eedd6742af668097b29c@10.0.1.16:30303?discport=30304"),
|
||||
// MustParseNode("enode://81fa361d25f157cd421c60dcc28d8dac5ef6a89476633339c5df30287474520caca09627da18543d9079b5b288698b542d56167aa5c09111e55acdbbdf2ef799@10.0.1.16:30303"),
|
||||
// MustParseNode("enode://9bffefd833d53fac8e652415f4973bee289e8b1a5c6c4cbe70abf817ce8a64cee11b823b66a987f51aaa9fba0d6a91b3e6bf0d5a5d1042de8e9eeea057b217f8@10.0.1.36:30301?discport=17"),
|
||||
// MustParseNode("enode://1b5b4aa662d7cb44a7221bfba67302590b643028197a7d5214790f3bac7aaa4a3241be9e83c09cf1f6c69d007c634faae3dc1b1221793e8446c0b3a09de65960@10.0.1.16:30303"),
|
||||
// }
|
||||
// rpclist := make([]rpcNode, len(list))
|
||||
// for i := range list {
|
||||
// rpclist[i] = nodeToRPC(list[i])
|
||||
// }
|
||||
// test.packetIn(nil, neighborsPacket, &neighbors{Expiration: futureExp, Nodes: rpclist[:2]})
|
||||
// test.packetIn(nil, neighborsPacket, &neighbors{Expiration: futureExp, Nodes: rpclist[2:]})
|
||||
//
|
||||
// // check that the sent neighbors are all returned by findnode
|
||||
// select {
|
||||
// case result := <-resultc:
|
||||
// if !reflect.DeepEqual(result, list) {
|
||||
// t.Errorf("neighbors mismatch:\n got: %v\n want: %v", result, list)
|
||||
// }
|
||||
// case err := <-errc:
|
||||
// t.Errorf("findnode error: %v", err)
|
||||
// case <-time.After(5 * time.Second):
|
||||
// t.Error("findnode did not return within 5 seconds")
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// func TestUDP_successfulPing(t *testing.T) {
|
||||
// test := newUDPTest(t)
|
||||
// added := make(chan *Node, 1)
|
||||
// test.table.nodeAddedHook = func(n *Node) { added <- n }
|
||||
// defer test.table.Close()
|
||||
//
|
||||
// // The remote side sends a ping packet to initiate the exchange.
|
||||
// go test.packetIn(nil, pingPacket, &ping{From: testRemote, To: testLocalAnnounced, Version: Version, Expiration: futureExp})
|
||||
//
|
||||
// // the ping is replied to.
|
||||
// test.waitPacketOut(func(p *pong) {
|
||||
// pinghash := test.sent[0][:macSize]
|
||||
// if !bytes.Equal(p.ReplyTok, pinghash) {
|
||||
// t.Errorf("got pong.ReplyTok %x, want %x", p.ReplyTok, pinghash)
|
||||
// }
|
||||
// wantTo := rpcEndpoint{
|
||||
// // The mirrored UDP address is the UDP packet sender
|
||||
// IP: test.remoteaddr.IP, UDP: uint16(test.remoteaddr.Port),
|
||||
// // The mirrored TCP port is the one from the ping packet
|
||||
// TCP: testRemote.TCP,
|
||||
// }
|
||||
// if !reflect.DeepEqual(p.To, wantTo) {
|
||||
// t.Errorf("got pong.To %v, want %v", p.To, wantTo)
|
||||
// }
|
||||
// })
|
||||
//
|
||||
// // remote is unknown, the table pings back.
|
||||
// test.waitPacketOut(func(p *ping) error {
|
||||
// if !reflect.DeepEqual(p.From, test.udp.ourEndpoint) {
|
||||
// t.Errorf("got ping.From %v, want %v", p.From, test.udp.ourEndpoint)
|
||||
// }
|
||||
// wantTo := rpcEndpoint{
|
||||
// // The mirrored UDP address is the UDP packet sender.
|
||||
// IP: test.remoteaddr.IP, UDP: uint16(test.remoteaddr.Port),
|
||||
// TCP: 0,
|
||||
// }
|
||||
// if !reflect.DeepEqual(p.To, wantTo) {
|
||||
// t.Errorf("got ping.To %v, want %v", p.To, wantTo)
|
||||
// }
|
||||
// return nil
|
||||
// })
|
||||
// test.packetIn(nil, pongPacket, &pong{Expiration: futureExp})
|
||||
//
|
||||
// // the node should be added to the table shortly after getting the
|
||||
// // pong packet.
|
||||
// select {
|
||||
// case n := <-added:
|
||||
// rid := PubkeyID(&test.remotekey.PublicKey)
|
||||
// if n.ID != rid {
|
||||
// t.Errorf("node has wrong ID: got %v, want %v", n.ID, rid)
|
||||
// }
|
||||
// if !bytes.Equal(n.IP, test.remoteaddr.IP) {
|
||||
// t.Errorf("node has wrong IP: got %v, want: %v", n.IP, test.remoteaddr.IP)
|
||||
// }
|
||||
// if int(n.UDP) != test.remoteaddr.Port {
|
||||
// t.Errorf("node has wrong UDP port: got %v, want: %v", n.UDP, test.remoteaddr.Port)
|
||||
// }
|
||||
// if n.TCP != testRemote.TCP {
|
||||
// t.Errorf("node has wrong TCP port: got %v, want: %v", n.TCP, testRemote.TCP)
|
||||
// }
|
||||
// case <-time.After(2 * time.Second):
|
||||
// t.Errorf("node was not added within 2 seconds")
|
||||
// }
|
||||
// }
|
||||
|
||||
var testPackets = []struct {
|
||||
input string
|
||||
wantPacket interface{}
|
||||
}{
|
||||
{
|
||||
input: "71dbda3a79554728d4f94411e42ee1f8b0d561c10e1e5f5893367948c6a7d70bb87b235fa28a77070271b6c164a2dce8c7e13a5739b53b5e96f2e5acb0e458a02902f5965d55ecbeb2ebb6cabb8b2b232896a36b737666c55265ad0a68412f250001ea04cb847f000001820cfa8215a8d790000000000000000000000000000000018208ae820d058443b9a355",
|
||||
wantPacket: &ping{
|
||||
Version: 4,
|
||||
From: rpcEndpoint{net.ParseIP("127.0.0.1").To4(), 3322, 5544},
|
||||
To: rpcEndpoint{net.ParseIP("::1"), 2222, 3333},
|
||||
Expiration: 1136239445,
|
||||
Rest: []rlp.RawValue{},
|
||||
},
|
||||
},
|
||||
{
|
||||
input: "e9614ccfd9fc3e74360018522d30e1419a143407ffcce748de3e22116b7e8dc92ff74788c0b6663aaa3d67d641936511c8f8d6ad8698b820a7cf9e1be7155e9a241f556658c55428ec0563514365799a4be2be5a685a80971ddcfa80cb422cdd0101ec04cb847f000001820cfa8215a8d790000000000000000000000000000000018208ae820d058443b9a3550102",
|
||||
wantPacket: &ping{
|
||||
Version: 4,
|
||||
From: rpcEndpoint{net.ParseIP("127.0.0.1").To4(), 3322, 5544},
|
||||
To: rpcEndpoint{net.ParseIP("::1"), 2222, 3333},
|
||||
Expiration: 1136239445,
|
||||
Rest: []rlp.RawValue{{0x01}, {0x02}},
|
||||
},
|
||||
},
|
||||
{
|
||||
input: "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",
|
||||
wantPacket: &ping{
|
||||
Version: 555,
|
||||
From: rpcEndpoint{net.ParseIP("2001:db8:3c4d:15::abcd:ef12"), 3322, 5544},
|
||||
To: rpcEndpoint{net.ParseIP("2001:db8:85a3:8d3:1319:8a2e:370:7348"), 2222, 33338},
|
||||
Expiration: 1136239445,
|
||||
Rest: []rlp.RawValue{{0xC5, 0x01, 0x02, 0x03, 0x04, 0x05}},
|
||||
},
|
||||
},
|
||||
{
|
||||
input: "09b2428d83348d27cdf7064ad9024f526cebc19e4958f0fdad87c15eb598dd61d08423e0bf66b2069869e1724125f820d851c136684082774f870e614d95a2855d000f05d1648b2d5945470bc187c2d2216fbe870f43ed0909009882e176a46b0102f846d79020010db885a308d313198a2e037073488208ae82823aa0fbc914b16819237dcd8801d7e53f69e9719adecb3cc0e790c57e91ca4461c9548443b9a355c6010203c2040506a0c969a58f6f9095004c0177a6b47f451530cab38966a25cca5cb58f055542124e",
|
||||
wantPacket: &pong{
|
||||
To: rpcEndpoint{net.ParseIP("2001:db8:85a3:8d3:1319:8a2e:370:7348"), 2222, 33338},
|
||||
ReplyTok: common.Hex2Bytes("fbc914b16819237dcd8801d7e53f69e9719adecb3cc0e790c57e91ca4461c954"),
|
||||
Expiration: 1136239445,
|
||||
Rest: []rlp.RawValue{{0xC6, 0x01, 0x02, 0x03, 0xC2, 0x04, 0x05}, {0x06}},
|
||||
},
|
||||
},
|
||||
{
|
||||
input: "c7c44041b9f7c7e41934417ebac9a8e1a4c6298f74553f2fcfdcae6ed6fe53163eb3d2b52e39fe91831b8a927bf4fc222c3902202027e5e9eb812195f95d20061ef5cd31d502e47ecb61183f74a504fe04c51e73df81f25c4d506b26db4517490103f84eb840ca634cae0d49acb401d8a4c6b6fe8c55b70d115bf400769cc1400f3258cd31387574077f301b421bc84df7266c44e9e6d569fc56be00812904767bf5ccd1fc7f8443b9a35582999983999999280dc62cc8255c73471e0a61da0c89acdc0e035e260add7fc0c04ad9ebf3919644c91cb247affc82b69bd2ca235c71eab8e49737c937a2c396",
|
||||
wantPacket: &findnode{
|
||||
Target: MustHexID("ca634cae0d49acb401d8a4c6b6fe8c55b70d115bf400769cc1400f3258cd31387574077f301b421bc84df7266c44e9e6d569fc56be00812904767bf5ccd1fc7f"),
|
||||
Expiration: 1136239445,
|
||||
Rest: []rlp.RawValue{{0x82, 0x99, 0x99}, {0x83, 0x99, 0x99, 0x99}},
|
||||
},
|
||||
},
|
||||
{
|
||||
input: "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",
|
||||
wantPacket: &neighbors{
|
||||
Nodes: []rpcNode{
|
||||
{
|
||||
ID: MustHexID("3155e1427f85f10a5c9a7755877748041af1bcd8d474ec065eb33df57a97babf54bfd2103575fa829115d224c523596b401065a97f74010610fce76382c0bf32"),
|
||||
IP: net.ParseIP("99.33.22.55").To4(),
|
||||
UDP: 4444,
|
||||
TCP: 4445,
|
||||
},
|
||||
{
|
||||
ID: MustHexID("312c55512422cf9b8a4097e9a6ad79402e87a15ae909a4bfefa22398f03d20951933beea1e4dfa6f968212385e829f04c2d314fc2d4e255e0d3bc08792b069db"),
|
||||
IP: net.ParseIP("1.2.3.4").To4(),
|
||||
UDP: 1,
|
||||
TCP: 1,
|
||||
},
|
||||
{
|
||||
ID: MustHexID("38643200b172dcfef857492156971f0e6aa2c538d8b74010f8e140811d53b98c765dd2d96126051913f44582e8c199ad7c6d6819e9a56483f637feaac9448aac"),
|
||||
IP: net.ParseIP("2001:db8:3c4d:15::abcd:ef12"),
|
||||
UDP: 3333,
|
||||
TCP: 3333,
|
||||
},
|
||||
{
|
||||
ID: MustHexID("8dcab8618c3253b558d459da53bd8fa68935a719aff8b811197101a4b2b47dd2d47295286fc00cc081bb542d760717d1bdd6bec2c37cd72eca367d6dd3b9df73"),
|
||||
IP: net.ParseIP("2001:db8:85a3:8d3:1319:8a2e:370:7348"),
|
||||
UDP: 999,
|
||||
TCP: 1000,
|
||||
},
|
||||
},
|
||||
Expiration: 1136239445,
|
||||
Rest: []rlp.RawValue{{0x01}, {0x02}, {0x03}},
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
func TestForwardCompatibility(t *testing.T) {
|
||||
t.Skip("skipped while working on discovery v5")
|
||||
|
||||
testkey, _ := crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
|
||||
wantNodeID := PubkeyID(&testkey.PublicKey)
|
||||
|
||||
for _, test := range testPackets {
|
||||
input, err := hex.DecodeString(test.input)
|
||||
if err != nil {
|
||||
t.Fatalf("invalid hex: %s", test.input)
|
||||
}
|
||||
var pkt ingressPacket
|
||||
if err := decodePacket(input, &pkt); err != nil {
|
||||
t.Errorf("did not accept packet %s\n%v", test.input, err)
|
||||
continue
|
||||
}
|
||||
if !reflect.DeepEqual(pkt.data, test.wantPacket) {
|
||||
t.Errorf("got %s\nwant %s", spew.Sdump(pkt.data), spew.Sdump(test.wantPacket))
|
||||
}
|
||||
if pkt.remoteID != wantNodeID {
|
||||
t.Errorf("got id %v\nwant id %v", pkt.remoteID, wantNodeID)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// dgramPipe is a fake UDP socket. It queues all sent datagrams.
|
||||
type dgramPipe struct {
|
||||
mu *sync.Mutex
|
||||
cond *sync.Cond
|
||||
closing chan struct{}
|
||||
closed bool
|
||||
queue [][]byte
|
||||
}
|
||||
|
||||
func newpipe() *dgramPipe {
|
||||
mu := new(sync.Mutex)
|
||||
return &dgramPipe{
|
||||
closing: make(chan struct{}),
|
||||
cond: &sync.Cond{L: mu},
|
||||
mu: mu,
|
||||
}
|
||||
}
|
||||
|
||||
// WriteToUDP queues a datagram.
|
||||
func (c *dgramPipe) WriteToUDP(b []byte, to *net.UDPAddr) (n int, err error) {
|
||||
msg := make([]byte, len(b))
|
||||
copy(msg, b)
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
if c.closed {
|
||||
return 0, errors.New("closed")
|
||||
}
|
||||
c.queue = append(c.queue, msg)
|
||||
c.cond.Signal()
|
||||
return len(b), nil
|
||||
}
|
||||
|
||||
// ReadFromUDP just hangs until the pipe is closed.
|
||||
func (c *dgramPipe) ReadFromUDP(b []byte) (n int, addr *net.UDPAddr, err error) {
|
||||
<-c.closing
|
||||
return 0, nil, io.EOF
|
||||
}
|
||||
|
||||
func (c *dgramPipe) Close() error {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
if !c.closed {
|
||||
close(c.closing)
|
||||
c.closed = true
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *dgramPipe) LocalAddr() net.Addr {
|
||||
return &net.UDPAddr{IP: testLocal.IP, Port: int(testLocal.UDP)}
|
||||
}
|
||||
|
||||
func (c *dgramPipe) waitPacketOut() []byte {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
for len(c.queue) == 0 {
|
||||
c.cond.Wait()
|
||||
}
|
||||
p := c.queue[0]
|
||||
copy(c.queue, c.queue[1:])
|
||||
c.queue = c.queue[:len(c.queue)-1]
|
||||
return p
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user