mirror of
https://gitlab.com/pulsechaincom/go-pulse.git
synced 2024-12-22 19:40:36 +00:00
2c37142d2f
* 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
591 lines
18 KiB
Go
591 lines
18 KiB
Go
// Copyright 2015 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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package p2p
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import (
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"encoding/binary"
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"net"
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"reflect"
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"strings"
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"testing"
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"time"
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"github.com/davecgh/go-spew/spew"
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"github.com/ethereum/go-ethereum/internal/testlog"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/p2p/enode"
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"github.com/ethereum/go-ethereum/p2p/enr"
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"github.com/ethereum/go-ethereum/p2p/netutil"
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)
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func init() {
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spew.Config.Indent = "\t"
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}
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type dialtest struct {
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init *dialstate // state before and after the test.
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rounds []round
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}
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type round struct {
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peers []*Peer // current peer set
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done []task // tasks that got done this round
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new []task // the result must match this one
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}
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func runDialTest(t *testing.T, test dialtest) {
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var (
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vtime time.Time
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running int
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)
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pm := func(ps []*Peer) map[enode.ID]*Peer {
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m := make(map[enode.ID]*Peer)
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for _, p := range ps {
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m[p.ID()] = p
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}
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return m
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}
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for i, round := range test.rounds {
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for _, task := range round.done {
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running--
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if running < 0 {
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panic("running task counter underflow")
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}
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test.init.taskDone(task, vtime)
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}
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new := test.init.newTasks(running, pm(round.peers), vtime)
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if !sametasks(new, round.new) {
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t.Errorf("ERROR round %d: got %v\nwant %v\nstate: %v\nrunning: %v",
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i, spew.Sdump(new), spew.Sdump(round.new), spew.Sdump(test.init), spew.Sdump(running))
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}
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t.Logf("round %d (running %d) new tasks: %s", i, running, strings.TrimSpace(spew.Sdump(new)))
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// Time advances by 16 seconds on every round.
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vtime = vtime.Add(16 * time.Second)
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running += len(new)
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}
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}
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// This test checks that dynamic dials are launched from discovery results.
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func TestDialStateDynDial(t *testing.T) {
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config := &Config{Logger: testlog.Logger(t, log.LvlTrace)}
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runDialTest(t, dialtest{
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init: newDialState(enode.ID{}, 5, config),
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rounds: []round{
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// A discovery query is launched.
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{
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peers: []*Peer{
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(0), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(2), nil)}},
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},
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new: []task{
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&discoverTask{want: 3},
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},
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},
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// Dynamic dials are launched when it completes.
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{
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peers: []*Peer{
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(0), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(2), nil)}},
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},
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done: []task{
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&discoverTask{results: []*enode.Node{
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newNode(uintID(2), nil), // this one is already connected and not dialed.
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newNode(uintID(3), nil),
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newNode(uintID(4), nil),
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newNode(uintID(5), nil),
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newNode(uintID(6), nil), // these are not tried because max dyn dials is 5
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newNode(uintID(7), nil), // ...
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}},
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},
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new: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(3), nil)},
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(4), nil)},
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(5), nil)},
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},
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},
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// Some of the dials complete but no new ones are launched yet because
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// the sum of active dial count and dynamic peer count is == maxDynDials.
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{
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peers: []*Peer{
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(0), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(2), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(3), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(4), nil)}},
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},
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done: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(3), nil)},
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(4), nil)},
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},
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},
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// No new dial tasks are launched in the this round because
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// maxDynDials has been reached.
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{
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peers: []*Peer{
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(0), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(2), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(3), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(4), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(5), nil)}},
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},
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done: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(5), nil)},
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},
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new: []task{
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&waitExpireTask{Duration: 19 * time.Second},
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},
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},
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// In this round, the peer with id 2 drops off. The query
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// results from last discovery lookup are reused.
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{
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peers: []*Peer{
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(0), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(3), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(4), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(5), nil)}},
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},
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new: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(6), nil)},
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},
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},
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// More peers (3,4) drop off and dial for ID 6 completes.
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// The last query result from the discovery lookup is reused
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// and a new one is spawned because more candidates are needed.
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{
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peers: []*Peer{
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(0), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(5), nil)}},
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},
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done: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(6), nil)},
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},
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new: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(7), nil)},
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&discoverTask{want: 2},
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},
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},
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// Peer 7 is connected, but there still aren't enough dynamic peers
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// (4 out of 5). However, a discovery is already running, so ensure
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// no new is started.
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{
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peers: []*Peer{
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(0), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(5), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(7), nil)}},
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},
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done: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(7), nil)},
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},
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},
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// Finish the running node discovery with an empty set. A new lookup
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// should be immediately requested.
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{
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peers: []*Peer{
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(0), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(5), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(7), nil)}},
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},
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done: []task{
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&discoverTask{},
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},
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new: []task{
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&discoverTask{want: 2},
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},
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},
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},
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})
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}
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// Tests that bootnodes are dialed if no peers are connectd, but not otherwise.
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func TestDialStateDynDialBootnode(t *testing.T) {
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config := &Config{
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BootstrapNodes: []*enode.Node{
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newNode(uintID(1), nil),
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newNode(uintID(2), nil),
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newNode(uintID(3), nil),
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},
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Logger: testlog.Logger(t, log.LvlTrace),
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}
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runDialTest(t, dialtest{
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init: newDialState(enode.ID{}, 5, config),
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rounds: []round{
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{
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new: []task{
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&discoverTask{want: 5},
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},
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},
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{
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done: []task{
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&discoverTask{
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results: []*enode.Node{
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newNode(uintID(4), nil),
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newNode(uintID(5), nil),
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},
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},
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},
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new: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(4), nil)},
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(5), nil)},
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&discoverTask{want: 3},
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},
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},
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// No dials succeed, bootnodes still pending fallback interval
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{},
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// 1 bootnode attempted as fallback interval was reached
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{
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done: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(4), nil)},
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(5), nil)},
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},
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new: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(1), nil)},
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},
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},
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// No dials succeed, 2nd bootnode is attempted
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{
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done: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(1), nil)},
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},
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new: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(2), nil)},
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},
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},
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// No dials succeed, 3rd bootnode is attempted
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{
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done: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(2), nil)},
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},
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new: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(3), nil)},
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},
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},
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// No dials succeed, 1st bootnode is attempted again, expired random nodes retried
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{
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done: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(3), nil)},
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&discoverTask{results: []*enode.Node{
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newNode(uintID(6), nil),
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}},
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},
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new: []task{
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&dialTask{flags: dynDialedConn, dest: newNode(uintID(6), nil)},
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&discoverTask{want: 4},
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},
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},
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// Random dial succeeds, no more bootnodes are attempted
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{
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peers: []*Peer{
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(6), nil)}},
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},
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},
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},
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})
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}
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func newNode(id enode.ID, ip net.IP) *enode.Node {
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var r enr.Record
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if ip != nil {
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r.Set(enr.IP(ip))
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}
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return enode.SignNull(&r, id)
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}
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// // This test checks that candidates that do not match the netrestrict list are not dialed.
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func TestDialStateNetRestrict(t *testing.T) {
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// This table always returns the same random nodes
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// in the order given below.
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nodes := []*enode.Node{
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newNode(uintID(1), net.ParseIP("127.0.0.1")),
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newNode(uintID(2), net.ParseIP("127.0.0.2")),
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newNode(uintID(3), net.ParseIP("127.0.0.3")),
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newNode(uintID(4), net.ParseIP("127.0.0.4")),
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newNode(uintID(5), net.ParseIP("127.0.2.5")),
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newNode(uintID(6), net.ParseIP("127.0.2.6")),
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newNode(uintID(7), net.ParseIP("127.0.2.7")),
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newNode(uintID(8), net.ParseIP("127.0.2.8")),
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}
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restrict := new(netutil.Netlist)
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restrict.Add("127.0.2.0/24")
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runDialTest(t, dialtest{
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init: newDialState(enode.ID{}, 10, &Config{NetRestrict: restrict}),
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rounds: []round{
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{
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new: []task{
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&discoverTask{want: 10},
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},
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},
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{
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done: []task{
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&discoverTask{results: nodes},
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},
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new: []task{
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&dialTask{flags: dynDialedConn, dest: nodes[4]},
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&dialTask{flags: dynDialedConn, dest: nodes[5]},
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&dialTask{flags: dynDialedConn, dest: nodes[6]},
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&dialTask{flags: dynDialedConn, dest: nodes[7]},
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&discoverTask{want: 6},
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},
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},
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},
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})
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}
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// This test checks that static dials are launched.
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func TestDialStateStaticDial(t *testing.T) {
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config := &Config{
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StaticNodes: []*enode.Node{
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newNode(uintID(1), nil),
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newNode(uintID(2), nil),
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newNode(uintID(3), nil),
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newNode(uintID(4), nil),
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newNode(uintID(5), nil),
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},
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Logger: testlog.Logger(t, log.LvlTrace),
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}
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runDialTest(t, dialtest{
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init: newDialState(enode.ID{}, 0, config),
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rounds: []round{
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// Static dials are launched for the nodes that
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// aren't yet connected.
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{
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peers: []*Peer{
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(2), nil)}},
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},
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new: []task{
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&dialTask{flags: staticDialedConn, dest: newNode(uintID(3), nil)},
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&dialTask{flags: staticDialedConn, dest: newNode(uintID(4), nil)},
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&dialTask{flags: staticDialedConn, dest: newNode(uintID(5), nil)},
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},
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},
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// No new tasks are launched in this round because all static
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// nodes are either connected or still being dialed.
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{
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peers: []*Peer{
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(2), nil)}},
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(3), nil)}},
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},
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done: []task{
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&dialTask{flags: staticDialedConn, dest: newNode(uintID(3), nil)},
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},
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},
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// No new dial tasks are launched because all static
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// nodes are now connected.
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{
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peers: []*Peer{
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(2), nil)}},
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(3), nil)}},
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(4), nil)}},
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(5), nil)}},
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},
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done: []task{
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&dialTask{flags: staticDialedConn, dest: newNode(uintID(4), nil)},
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&dialTask{flags: staticDialedConn, dest: newNode(uintID(5), nil)},
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},
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new: []task{
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&waitExpireTask{Duration: 19 * time.Second},
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},
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},
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// Wait a round for dial history to expire, no new tasks should spawn.
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{
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peers: []*Peer{
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(2), nil)}},
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(3), nil)}},
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(4), nil)}},
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{rw: &conn{flags: staticDialedConn, node: newNode(uintID(5), nil)}},
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},
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},
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// If a static node is dropped, it should be immediately redialed,
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// irrespective whether it was originally static or dynamic.
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{
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done: []task{
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&waitExpireTask{Duration: 19 * time.Second},
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},
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peers: []*Peer{
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{rw: &conn{flags: dynDialedConn, node: newNode(uintID(1), nil)}},
|
|
{rw: &conn{flags: staticDialedConn, node: newNode(uintID(3), nil)}},
|
|
{rw: &conn{flags: staticDialedConn, node: newNode(uintID(5), nil)}},
|
|
},
|
|
new: []task{
|
|
&dialTask{flags: staticDialedConn, dest: newNode(uintID(2), nil)},
|
|
},
|
|
},
|
|
},
|
|
})
|
|
}
|
|
|
|
// This test checks that past dials are not retried for some time.
|
|
func TestDialStateCache(t *testing.T) {
|
|
config := &Config{
|
|
StaticNodes: []*enode.Node{
|
|
newNode(uintID(1), nil),
|
|
newNode(uintID(2), nil),
|
|
newNode(uintID(3), nil),
|
|
},
|
|
Logger: testlog.Logger(t, log.LvlTrace),
|
|
}
|
|
runDialTest(t, dialtest{
|
|
init: newDialState(enode.ID{}, 0, config),
|
|
rounds: []round{
|
|
// Static dials are launched for the nodes that
|
|
// aren't yet connected.
|
|
{
|
|
peers: nil,
|
|
new: []task{
|
|
&dialTask{flags: staticDialedConn, dest: newNode(uintID(1), nil)},
|
|
&dialTask{flags: staticDialedConn, dest: newNode(uintID(2), nil)},
|
|
&dialTask{flags: staticDialedConn, dest: newNode(uintID(3), nil)},
|
|
},
|
|
},
|
|
// No new tasks are launched in this round because all static
|
|
// nodes are either connected or still being dialed.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, node: newNode(uintID(1), nil)}},
|
|
{rw: &conn{flags: staticDialedConn, node: newNode(uintID(2), nil)}},
|
|
},
|
|
done: []task{
|
|
&dialTask{flags: staticDialedConn, dest: newNode(uintID(1), nil)},
|
|
&dialTask{flags: staticDialedConn, dest: newNode(uintID(2), nil)},
|
|
},
|
|
},
|
|
// A salvage task is launched to wait for node 3's history
|
|
// entry to expire.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, node: newNode(uintID(1), nil)}},
|
|
{rw: &conn{flags: staticDialedConn, node: newNode(uintID(2), nil)}},
|
|
},
|
|
done: []task{
|
|
&dialTask{flags: staticDialedConn, dest: newNode(uintID(3), nil)},
|
|
},
|
|
new: []task{
|
|
&waitExpireTask{Duration: 19 * time.Second},
|
|
},
|
|
},
|
|
// Still waiting for node 3's entry to expire in the cache.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, node: newNode(uintID(1), nil)}},
|
|
{rw: &conn{flags: staticDialedConn, node: newNode(uintID(2), nil)}},
|
|
},
|
|
},
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, node: newNode(uintID(1), nil)}},
|
|
{rw: &conn{flags: staticDialedConn, node: newNode(uintID(2), nil)}},
|
|
},
|
|
},
|
|
// The cache entry for node 3 has expired and is retried.
|
|
{
|
|
done: []task{
|
|
&waitExpireTask{Duration: 19 * time.Second},
|
|
},
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, node: newNode(uintID(1), nil)}},
|
|
{rw: &conn{flags: staticDialedConn, node: newNode(uintID(2), nil)}},
|
|
},
|
|
new: []task{
|
|
&dialTask{flags: staticDialedConn, dest: newNode(uintID(3), nil)},
|
|
},
|
|
},
|
|
},
|
|
})
|
|
}
|
|
|
|
func TestDialResolve(t *testing.T) {
|
|
config := &Config{
|
|
Logger: testlog.Logger(t, log.LvlTrace),
|
|
Dialer: TCPDialer{&net.Dialer{Deadline: time.Now().Add(-5 * time.Minute)}},
|
|
}
|
|
resolved := newNode(uintID(1), net.IP{127, 0, 55, 234})
|
|
resolver := &resolveMock{answer: resolved}
|
|
state := newDialState(enode.ID{}, 0, config)
|
|
|
|
// Check that the task is generated with an incomplete ID.
|
|
dest := newNode(uintID(1), nil)
|
|
state.addStatic(dest)
|
|
tasks := state.newTasks(0, nil, time.Time{})
|
|
if !reflect.DeepEqual(tasks, []task{&dialTask{flags: staticDialedConn, dest: dest}}) {
|
|
t.Fatalf("expected dial task, got %#v", tasks)
|
|
}
|
|
|
|
// Now run the task, it should resolve the ID once.
|
|
srv := &Server{
|
|
Config: *config,
|
|
log: config.Logger,
|
|
staticNodeResolver: resolver,
|
|
}
|
|
tasks[0].Do(srv)
|
|
if !reflect.DeepEqual(resolver.calls, []*enode.Node{dest}) {
|
|
t.Fatalf("wrong resolve calls, got %v", resolver.calls)
|
|
}
|
|
|
|
// Report it as done to the dialer, which should update the static node record.
|
|
state.taskDone(tasks[0], time.Now())
|
|
if state.static[uintID(1)].dest != resolved {
|
|
t.Fatalf("state.dest not updated")
|
|
}
|
|
}
|
|
|
|
// compares task lists but doesn't care about the order.
|
|
func sametasks(a, b []task) bool {
|
|
if len(a) != len(b) {
|
|
return false
|
|
}
|
|
next:
|
|
for _, ta := range a {
|
|
for _, tb := range b {
|
|
if reflect.DeepEqual(ta, tb) {
|
|
continue next
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
func uintID(i uint32) enode.ID {
|
|
var id enode.ID
|
|
binary.BigEndian.PutUint32(id[:], i)
|
|
return id
|
|
}
|
|
|
|
// for TestDialResolve
|
|
type resolveMock struct {
|
|
calls []*enode.Node
|
|
answer *enode.Node
|
|
}
|
|
|
|
func (t *resolveMock) Resolve(n *enode.Node) *enode.Node {
|
|
t.calls = append(t.calls, n)
|
|
return t.answer
|
|
}
|