128d20c9bf
* Upgrade geth from 1.8.15 to 1.8.18 * Update vat_tune to use shared repository methods * Query blockchain by block hash instead of block number range * Remove hash validation from repositories * Fix vow flog integration test * Update README Travis build sticker * Update constants formatting per go fmt * Update EthPublicKeyParser.ParsePublicKey to use discv5.PubkeyID method * Address PR comments
591 lines
14 KiB
Go
591 lines
14 KiB
Go
// Copyright 2017 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 protocols
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
|
|
"github.com/ethereum/go-ethereum/p2p"
|
|
"github.com/ethereum/go-ethereum/p2p/enode"
|
|
"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
|
|
p2ptest "github.com/ethereum/go-ethereum/p2p/testing"
|
|
)
|
|
|
|
// handshake message type
|
|
type hs0 struct {
|
|
C uint
|
|
}
|
|
|
|
// message to kill/drop the peer with nodeID
|
|
type kill struct {
|
|
C enode.ID
|
|
}
|
|
|
|
// message to drop connection
|
|
type drop struct {
|
|
}
|
|
|
|
/// protoHandshake represents module-independent aspects of the protocol and is
|
|
// the first message peers send and receive as part the initial exchange
|
|
type protoHandshake struct {
|
|
Version uint // local and remote peer should have identical version
|
|
NetworkID string // local and remote peer should have identical network id
|
|
}
|
|
|
|
// checkProtoHandshake verifies local and remote protoHandshakes match
|
|
func checkProtoHandshake(testVersion uint, testNetworkID string) func(interface{}) error {
|
|
return func(rhs interface{}) error {
|
|
remote := rhs.(*protoHandshake)
|
|
if remote.NetworkID != testNetworkID {
|
|
return fmt.Errorf("%s (!= %s)", remote.NetworkID, testNetworkID)
|
|
}
|
|
|
|
if remote.Version != testVersion {
|
|
return fmt.Errorf("%d (!= %d)", remote.Version, testVersion)
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// newProtocol sets up a protocol
|
|
// the run function here demonstrates a typical protocol using peerPool, handshake
|
|
// and messages registered to handlers
|
|
func newProtocol(pp *p2ptest.TestPeerPool) func(*p2p.Peer, p2p.MsgReadWriter) error {
|
|
spec := &Spec{
|
|
Name: "test",
|
|
Version: 42,
|
|
MaxMsgSize: 10 * 1024,
|
|
Messages: []interface{}{
|
|
protoHandshake{},
|
|
hs0{},
|
|
kill{},
|
|
drop{},
|
|
},
|
|
}
|
|
return func(p *p2p.Peer, rw p2p.MsgReadWriter) error {
|
|
peer := NewPeer(p, rw, spec)
|
|
|
|
// initiate one-off protohandshake and check validity
|
|
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
|
|
defer cancel()
|
|
phs := &protoHandshake{42, "420"}
|
|
hsCheck := checkProtoHandshake(phs.Version, phs.NetworkID)
|
|
_, err := peer.Handshake(ctx, phs, hsCheck)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
lhs := &hs0{42}
|
|
// module handshake demonstrating a simple repeatable exchange of same-type message
|
|
hs, err := peer.Handshake(ctx, lhs, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if rmhs := hs.(*hs0); rmhs.C > lhs.C {
|
|
return fmt.Errorf("handshake mismatch remote %v > local %v", rmhs.C, lhs.C)
|
|
}
|
|
|
|
handle := func(ctx context.Context, msg interface{}) error {
|
|
switch msg := msg.(type) {
|
|
|
|
case *protoHandshake:
|
|
return errors.New("duplicate handshake")
|
|
|
|
case *hs0:
|
|
rhs := msg
|
|
if rhs.C > lhs.C {
|
|
return fmt.Errorf("handshake mismatch remote %v > local %v", rhs.C, lhs.C)
|
|
}
|
|
lhs.C += rhs.C
|
|
return peer.Send(ctx, lhs)
|
|
|
|
case *kill:
|
|
// demonstrates use of peerPool, killing another peer connection as a response to a message
|
|
id := msg.C
|
|
pp.Get(id).Drop(errors.New("killed"))
|
|
return nil
|
|
|
|
case *drop:
|
|
// for testing we can trigger self induced disconnect upon receiving drop message
|
|
return errors.New("dropped")
|
|
|
|
default:
|
|
return fmt.Errorf("unknown message type: %T", msg)
|
|
}
|
|
}
|
|
|
|
pp.Add(peer)
|
|
defer pp.Remove(peer)
|
|
return peer.Run(handle)
|
|
}
|
|
}
|
|
|
|
func protocolTester(t *testing.T, pp *p2ptest.TestPeerPool) *p2ptest.ProtocolTester {
|
|
conf := adapters.RandomNodeConfig()
|
|
return p2ptest.NewProtocolTester(t, conf.ID, 2, newProtocol(pp))
|
|
}
|
|
|
|
func protoHandshakeExchange(id enode.ID, proto *protoHandshake) []p2ptest.Exchange {
|
|
|
|
return []p2ptest.Exchange{
|
|
{
|
|
Expects: []p2ptest.Expect{
|
|
{
|
|
Code: 0,
|
|
Msg: &protoHandshake{42, "420"},
|
|
Peer: id,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
Triggers: []p2ptest.Trigger{
|
|
{
|
|
Code: 0,
|
|
Msg: proto,
|
|
Peer: id,
|
|
},
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func runProtoHandshake(t *testing.T, proto *protoHandshake, errs ...error) {
|
|
pp := p2ptest.NewTestPeerPool()
|
|
s := protocolTester(t, pp)
|
|
// TODO: make this more than one handshake
|
|
node := s.Nodes[0]
|
|
if err := s.TestExchanges(protoHandshakeExchange(node.ID(), proto)...); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
var disconnects []*p2ptest.Disconnect
|
|
for i, err := range errs {
|
|
disconnects = append(disconnects, &p2ptest.Disconnect{Peer: s.Nodes[i].ID(), Error: err})
|
|
}
|
|
if err := s.TestDisconnected(disconnects...); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
type dummyHook struct {
|
|
peer *Peer
|
|
size uint32
|
|
msg interface{}
|
|
send bool
|
|
err error
|
|
waitC chan struct{}
|
|
}
|
|
|
|
type dummyMsg struct {
|
|
Content string
|
|
}
|
|
|
|
func (d *dummyHook) Send(peer *Peer, size uint32, msg interface{}) error {
|
|
d.peer = peer
|
|
d.size = size
|
|
d.msg = msg
|
|
d.send = true
|
|
return d.err
|
|
}
|
|
|
|
func (d *dummyHook) Receive(peer *Peer, size uint32, msg interface{}) error {
|
|
d.peer = peer
|
|
d.size = size
|
|
d.msg = msg
|
|
d.send = false
|
|
d.waitC <- struct{}{}
|
|
return d.err
|
|
}
|
|
|
|
func TestProtocolHook(t *testing.T) {
|
|
testHook := &dummyHook{
|
|
waitC: make(chan struct{}, 1),
|
|
}
|
|
spec := &Spec{
|
|
Name: "test",
|
|
Version: 42,
|
|
MaxMsgSize: 10 * 1024,
|
|
Messages: []interface{}{
|
|
dummyMsg{},
|
|
},
|
|
Hook: testHook,
|
|
}
|
|
|
|
runFunc := func(p *p2p.Peer, rw p2p.MsgReadWriter) error {
|
|
peer := NewPeer(p, rw, spec)
|
|
ctx := context.TODO()
|
|
err := peer.Send(ctx, &dummyMsg{
|
|
Content: "handshake"})
|
|
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
handle := func(ctx context.Context, msg interface{}) error {
|
|
return nil
|
|
}
|
|
|
|
return peer.Run(handle)
|
|
}
|
|
|
|
conf := adapters.RandomNodeConfig()
|
|
tester := p2ptest.NewProtocolTester(t, conf.ID, 2, runFunc)
|
|
err := tester.TestExchanges(p2ptest.Exchange{
|
|
Expects: []p2ptest.Expect{
|
|
{
|
|
Code: 0,
|
|
Msg: &dummyMsg{Content: "handshake"},
|
|
Peer: tester.Nodes[0].ID(),
|
|
},
|
|
},
|
|
})
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if testHook.msg == nil || testHook.msg.(*dummyMsg).Content != "handshake" {
|
|
t.Fatal("Expected msg to be set, but it is not")
|
|
}
|
|
if !testHook.send {
|
|
t.Fatal("Expected a send message, but it is not")
|
|
}
|
|
if testHook.peer == nil || testHook.peer.ID() != tester.Nodes[0].ID() {
|
|
t.Fatal("Expected peer ID to be set correctly, but it is not")
|
|
}
|
|
if testHook.size != 11 { //11 is the length of the encoded message
|
|
t.Fatalf("Expected size to be %d, but it is %d ", 1, testHook.size)
|
|
}
|
|
|
|
err = tester.TestExchanges(p2ptest.Exchange{
|
|
Triggers: []p2ptest.Trigger{
|
|
{
|
|
Code: 0,
|
|
Msg: &dummyMsg{Content: "response"},
|
|
Peer: tester.Nodes[1].ID(),
|
|
},
|
|
},
|
|
})
|
|
|
|
<-testHook.waitC
|
|
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if testHook.msg == nil || testHook.msg.(*dummyMsg).Content != "response" {
|
|
t.Fatal("Expected msg to be set, but it is not")
|
|
}
|
|
if testHook.send {
|
|
t.Fatal("Expected a send message, but it is not")
|
|
}
|
|
if testHook.peer == nil || testHook.peer.ID() != tester.Nodes[1].ID() {
|
|
t.Fatal("Expected peer ID to be set correctly, but it is not")
|
|
}
|
|
if testHook.size != 10 { //11 is the length of the encoded message
|
|
t.Fatalf("Expected size to be %d, but it is %d ", 1, testHook.size)
|
|
}
|
|
|
|
testHook.err = fmt.Errorf("dummy error")
|
|
err = tester.TestExchanges(p2ptest.Exchange{
|
|
Triggers: []p2ptest.Trigger{
|
|
{
|
|
Code: 0,
|
|
Msg: &dummyMsg{Content: "response"},
|
|
Peer: tester.Nodes[1].ID(),
|
|
},
|
|
},
|
|
})
|
|
|
|
<-testHook.waitC
|
|
|
|
time.Sleep(100 * time.Millisecond)
|
|
err = tester.TestDisconnected(&p2ptest.Disconnect{Peer: tester.Nodes[1].ID(), Error: testHook.err})
|
|
if err != nil {
|
|
t.Fatalf("Expected a specific disconnect error, but got different one: %v", err)
|
|
}
|
|
|
|
}
|
|
|
|
//We need to test that if the hook is not defined, then message infrastructure
|
|
//(send,receive) still works
|
|
func TestNoHook(t *testing.T) {
|
|
//create a test spec
|
|
spec := createTestSpec()
|
|
//a random node
|
|
id := adapters.RandomNodeConfig().ID
|
|
//a peer
|
|
p := p2p.NewPeer(id, "testPeer", nil)
|
|
rw := &dummyRW{}
|
|
peer := NewPeer(p, rw, spec)
|
|
ctx := context.TODO()
|
|
msg := &perBytesMsgSenderPays{Content: "testBalance"}
|
|
//send a message
|
|
err := peer.Send(ctx, msg)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
//simulate receiving a message
|
|
rw.msg = msg
|
|
peer.handleIncoming(func(ctx context.Context, msg interface{}) error {
|
|
return nil
|
|
})
|
|
//all should just work and not result in any error
|
|
}
|
|
|
|
func TestProtoHandshakeVersionMismatch(t *testing.T) {
|
|
runProtoHandshake(t, &protoHandshake{41, "420"}, errorf(ErrHandshake, errorf(ErrHandler, "(msg code 0): 41 (!= 42)").Error()))
|
|
}
|
|
|
|
func TestProtoHandshakeNetworkIDMismatch(t *testing.T) {
|
|
runProtoHandshake(t, &protoHandshake{42, "421"}, errorf(ErrHandshake, errorf(ErrHandler, "(msg code 0): 421 (!= 420)").Error()))
|
|
}
|
|
|
|
func TestProtoHandshakeSuccess(t *testing.T) {
|
|
runProtoHandshake(t, &protoHandshake{42, "420"})
|
|
}
|
|
|
|
func moduleHandshakeExchange(id enode.ID, resp uint) []p2ptest.Exchange {
|
|
|
|
return []p2ptest.Exchange{
|
|
{
|
|
Expects: []p2ptest.Expect{
|
|
{
|
|
Code: 1,
|
|
Msg: &hs0{42},
|
|
Peer: id,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
Triggers: []p2ptest.Trigger{
|
|
{
|
|
Code: 1,
|
|
Msg: &hs0{resp},
|
|
Peer: id,
|
|
},
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func runModuleHandshake(t *testing.T, resp uint, errs ...error) {
|
|
pp := p2ptest.NewTestPeerPool()
|
|
s := protocolTester(t, pp)
|
|
node := s.Nodes[0]
|
|
if err := s.TestExchanges(protoHandshakeExchange(node.ID(), &protoHandshake{42, "420"})...); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := s.TestExchanges(moduleHandshakeExchange(node.ID(), resp)...); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
var disconnects []*p2ptest.Disconnect
|
|
for i, err := range errs {
|
|
disconnects = append(disconnects, &p2ptest.Disconnect{Peer: s.Nodes[i].ID(), Error: err})
|
|
}
|
|
if err := s.TestDisconnected(disconnects...); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func TestModuleHandshakeError(t *testing.T) {
|
|
runModuleHandshake(t, 43, fmt.Errorf("handshake mismatch remote 43 > local 42"))
|
|
}
|
|
|
|
func TestModuleHandshakeSuccess(t *testing.T) {
|
|
runModuleHandshake(t, 42)
|
|
}
|
|
|
|
// testing complex interactions over multiple peers, relaying, dropping
|
|
func testMultiPeerSetup(a, b enode.ID) []p2ptest.Exchange {
|
|
|
|
return []p2ptest.Exchange{
|
|
{
|
|
Label: "primary handshake",
|
|
Expects: []p2ptest.Expect{
|
|
{
|
|
Code: 0,
|
|
Msg: &protoHandshake{42, "420"},
|
|
Peer: a,
|
|
},
|
|
{
|
|
Code: 0,
|
|
Msg: &protoHandshake{42, "420"},
|
|
Peer: b,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
Label: "module handshake",
|
|
Triggers: []p2ptest.Trigger{
|
|
{
|
|
Code: 0,
|
|
Msg: &protoHandshake{42, "420"},
|
|
Peer: a,
|
|
},
|
|
{
|
|
Code: 0,
|
|
Msg: &protoHandshake{42, "420"},
|
|
Peer: b,
|
|
},
|
|
},
|
|
Expects: []p2ptest.Expect{
|
|
{
|
|
Code: 1,
|
|
Msg: &hs0{42},
|
|
Peer: a,
|
|
},
|
|
{
|
|
Code: 1,
|
|
Msg: &hs0{42},
|
|
Peer: b,
|
|
},
|
|
},
|
|
},
|
|
|
|
{Label: "alternative module handshake", Triggers: []p2ptest.Trigger{{Code: 1, Msg: &hs0{41}, Peer: a},
|
|
{Code: 1, Msg: &hs0{41}, Peer: b}}},
|
|
{Label: "repeated module handshake", Triggers: []p2ptest.Trigger{{Code: 1, Msg: &hs0{1}, Peer: a}}},
|
|
{Label: "receiving repeated module handshake", Expects: []p2ptest.Expect{{Code: 1, Msg: &hs0{43}, Peer: a}}}}
|
|
}
|
|
|
|
func runMultiplePeers(t *testing.T, peer int, errs ...error) {
|
|
pp := p2ptest.NewTestPeerPool()
|
|
s := protocolTester(t, pp)
|
|
|
|
if err := s.TestExchanges(testMultiPeerSetup(s.Nodes[0].ID(), s.Nodes[1].ID())...); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
// after some exchanges of messages, we can test state changes
|
|
// here this is simply demonstrated by the peerPool
|
|
// after the handshake negotiations peers must be added to the pool
|
|
// time.Sleep(1)
|
|
tick := time.NewTicker(10 * time.Millisecond)
|
|
timeout := time.NewTimer(1 * time.Second)
|
|
WAIT:
|
|
for {
|
|
select {
|
|
case <-tick.C:
|
|
if pp.Has(s.Nodes[0].ID()) {
|
|
break WAIT
|
|
}
|
|
case <-timeout.C:
|
|
t.Fatal("timeout")
|
|
}
|
|
}
|
|
if !pp.Has(s.Nodes[1].ID()) {
|
|
t.Fatalf("missing peer test-1: %v (%v)", pp, s.Nodes)
|
|
}
|
|
|
|
// peer 0 sends kill request for peer with index <peer>
|
|
err := s.TestExchanges(p2ptest.Exchange{
|
|
Triggers: []p2ptest.Trigger{
|
|
{
|
|
Code: 2,
|
|
Msg: &kill{s.Nodes[peer].ID()},
|
|
Peer: s.Nodes[0].ID(),
|
|
},
|
|
},
|
|
})
|
|
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// the peer not killed sends a drop request
|
|
err = s.TestExchanges(p2ptest.Exchange{
|
|
Triggers: []p2ptest.Trigger{
|
|
{
|
|
Code: 3,
|
|
Msg: &drop{},
|
|
Peer: s.Nodes[(peer+1)%2].ID(),
|
|
},
|
|
},
|
|
})
|
|
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// check the actual discconnect errors on the individual peers
|
|
var disconnects []*p2ptest.Disconnect
|
|
for i, err := range errs {
|
|
disconnects = append(disconnects, &p2ptest.Disconnect{Peer: s.Nodes[i].ID(), Error: err})
|
|
}
|
|
if err := s.TestDisconnected(disconnects...); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
// test if disconnected peers have been removed from peerPool
|
|
if pp.Has(s.Nodes[peer].ID()) {
|
|
t.Fatalf("peer test-%v not dropped: %v (%v)", peer, pp, s.Nodes)
|
|
}
|
|
|
|
}
|
|
func XTestMultiplePeersDropSelf(t *testing.T) {
|
|
runMultiplePeers(t, 0,
|
|
fmt.Errorf("subprotocol error"),
|
|
fmt.Errorf("Message handler error: (msg code 3): dropped"),
|
|
)
|
|
}
|
|
|
|
func XTestMultiplePeersDropOther(t *testing.T) {
|
|
runMultiplePeers(t, 1,
|
|
fmt.Errorf("Message handler error: (msg code 3): dropped"),
|
|
fmt.Errorf("subprotocol error"),
|
|
)
|
|
}
|
|
|
|
//dummy implementation of a MsgReadWriter
|
|
//this allows for quick and easy unit tests without
|
|
//having to build up the complete protocol
|
|
type dummyRW struct {
|
|
msg interface{}
|
|
size uint32
|
|
code uint64
|
|
}
|
|
|
|
func (d *dummyRW) WriteMsg(msg p2p.Msg) error {
|
|
return nil
|
|
}
|
|
|
|
func (d *dummyRW) ReadMsg() (p2p.Msg, error) {
|
|
enc := bytes.NewReader(d.getDummyMsg())
|
|
return p2p.Msg{
|
|
Code: d.code,
|
|
Size: d.size,
|
|
Payload: enc,
|
|
ReceivedAt: time.Now(),
|
|
}, nil
|
|
}
|
|
|
|
func (d *dummyRW) getDummyMsg() []byte {
|
|
r, _ := rlp.EncodeToBytes(d.msg)
|
|
var b bytes.Buffer
|
|
wmsg := WrappedMsg{
|
|
Context: b.Bytes(),
|
|
Size: uint32(len(r)),
|
|
Payload: r,
|
|
}
|
|
rr, _ := rlp.EncodeToBytes(wmsg)
|
|
d.size = uint32(len(rr))
|
|
return rr
|
|
}
|