dba1750eda
This change restructures the internals of p2p/discover to make room for the discv5 code which will soon be added to this package. - packet type names now have a "V4" suffix. - ListenUDP returns *UDPv4 instead of *Table. This technically breaks the API but the only caller in go-ethereum is package p2p, which uses a compatible interface and doesn't need changes. - The internal transport interface is changed to make Table reusable for v5. - The 'lookup' code moves from table to transport. This required updating the lookup unit test to use udpTest instead of a custom transport.
636 lines
22 KiB
Go
636 lines
22 KiB
Go
// Copyright 2015 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 discover
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/ecdsa"
|
|
crand "crypto/rand"
|
|
"encoding/binary"
|
|
"encoding/hex"
|
|
"errors"
|
|
"io"
|
|
"math/rand"
|
|
"net"
|
|
"reflect"
|
|
"sync"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/davecgh/go-spew/spew"
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/internal/testlog"
|
|
"github.com/ethereum/go-ethereum/log"
|
|
"github.com/ethereum/go-ethereum/p2p/enode"
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
)
|
|
|
|
func init() {
|
|
spew.Config.DisableMethods = true
|
|
}
|
|
|
|
// shared test variables
|
|
var (
|
|
futureExp = uint64(time.Now().Add(10 * time.Hour).Unix())
|
|
testTarget = encPubkey{0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1}
|
|
testRemote = rpcEndpoint{IP: net.ParseIP("1.1.1.1").To4(), UDP: 1, TCP: 2}
|
|
testLocalAnnounced = rpcEndpoint{IP: net.ParseIP("2.2.2.2").To4(), UDP: 3, TCP: 4}
|
|
testLocal = rpcEndpoint{IP: net.ParseIP("3.3.3.3").To4(), UDP: 5, TCP: 6}
|
|
)
|
|
|
|
type udpTest struct {
|
|
t *testing.T
|
|
pipe *dgramPipe
|
|
table *Table
|
|
db *enode.DB
|
|
udp *UDPv4
|
|
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{10, 0, 1, 99}, Port: 30303},
|
|
}
|
|
|
|
test.db, _ = enode.OpenDB("")
|
|
ln := enode.NewLocalNode(test.db, test.localkey)
|
|
test.udp, _ = ListenV4(test.pipe, ln, Config{
|
|
PrivateKey: test.localkey,
|
|
Log: testlog.Logger(t, log.LvlTrace),
|
|
})
|
|
test.table = test.udp.tab
|
|
// Wait for initial refresh so the table doesn't send unexpected findnode.
|
|
<-test.table.initDone
|
|
return test
|
|
}
|
|
|
|
func (test *udpTest) close() {
|
|
test.udp.Close()
|
|
test.db.Close()
|
|
}
|
|
|
|
// handles a packet as if it had been sent to the transport.
|
|
func (test *udpTest) packetIn(wantError error, ptype byte, data packetV4) {
|
|
test.t.Helper()
|
|
|
|
test.packetInFrom(wantError, test.remotekey, test.remoteaddr, ptype, data)
|
|
}
|
|
|
|
// handles a packet as if it had been sent to the transport by the key/endpoint.
|
|
func (test *udpTest) packetInFrom(wantError error, key *ecdsa.PrivateKey, addr *net.UDPAddr, ptype byte, data packetV4) {
|
|
test.t.Helper()
|
|
|
|
enc, _, err := test.udp.encode(key, ptype, data)
|
|
if err != nil {
|
|
test.t.Errorf("packet (%d) encode error: %v", ptype, err)
|
|
}
|
|
test.sent = append(test.sent, enc)
|
|
if err = test.udp.handlePacket(addr, enc); err != wantError {
|
|
test.t.Errorf("error mismatch: got %q, want %q", err, wantError)
|
|
}
|
|
}
|
|
|
|
// waits for a packet to be sent by the transport.
|
|
// validate should have type func(X, *net.UDPAddr, []byte), where X is a packet type.
|
|
func (test *udpTest) waitPacketOut(validate interface{}) (closed bool) {
|
|
test.t.Helper()
|
|
|
|
dgram, ok := test.pipe.receive()
|
|
if !ok {
|
|
return true
|
|
}
|
|
p, _, hash, err := decodeV4(dgram.data)
|
|
if err != nil {
|
|
test.t.Errorf("sent packet decode error: %v", err)
|
|
return false
|
|
}
|
|
fn := reflect.ValueOf(validate)
|
|
exptype := fn.Type().In(0)
|
|
if !reflect.TypeOf(p).AssignableTo(exptype) {
|
|
test.t.Errorf("sent packet type mismatch, got: %v, want: %v", reflect.TypeOf(p), exptype)
|
|
return false
|
|
}
|
|
fn.Call([]reflect.Value{reflect.ValueOf(p), reflect.ValueOf(&dgram.to), reflect.ValueOf(hash)})
|
|
return false
|
|
}
|
|
|
|
func TestUDPv4_packetErrors(t *testing.T) {
|
|
test := newUDPTest(t)
|
|
defer test.close()
|
|
|
|
test.packetIn(errExpired, p_pingV4, &pingV4{From: testRemote, To: testLocalAnnounced, Version: 4})
|
|
test.packetIn(errUnsolicitedReply, p_pongV4, &pongV4{ReplyTok: []byte{}, Expiration: futureExp})
|
|
test.packetIn(errUnknownNode, p_findnodeV4, &findnodeV4{Expiration: futureExp})
|
|
test.packetIn(errUnsolicitedReply, p_neighborsV4, &neighborsV4{Expiration: futureExp})
|
|
}
|
|
|
|
func TestUDPv4_pingTimeout(t *testing.T) {
|
|
t.Parallel()
|
|
test := newUDPTest(t)
|
|
defer test.close()
|
|
|
|
key := newkey()
|
|
toaddr := &net.UDPAddr{IP: net.ParseIP("1.2.3.4"), Port: 2222}
|
|
node := enode.NewV4(&key.PublicKey, toaddr.IP, 0, toaddr.Port)
|
|
if err := test.udp.ping(node); err != errTimeout {
|
|
t.Error("expected timeout error, got", err)
|
|
}
|
|
}
|
|
|
|
func TestUDPv4_responseTimeouts(t *testing.T) {
|
|
t.Parallel()
|
|
test := newUDPTest(t)
|
|
defer test.close()
|
|
|
|
rand.Seed(time.Now().UnixNano())
|
|
randomDuration := func(max time.Duration) time.Duration {
|
|
return time.Duration(rand.Int63n(int64(max)))
|
|
}
|
|
|
|
var (
|
|
nReqs = 200
|
|
nTimeouts = 0 // number of requests with ptype > 128
|
|
nilErr = make(chan error, nReqs) // for requests that get a reply
|
|
timeoutErr = make(chan error, nReqs) // for requests that time out
|
|
)
|
|
for i := 0; i < nReqs; i++ {
|
|
// Create a matcher for a random request in udp.loop. Requests
|
|
// with ptype <= 128 will not get a reply and should time out.
|
|
// For all other requests, a reply is scheduled to arrive
|
|
// within the timeout window.
|
|
p := &replyMatcher{
|
|
ptype: byte(rand.Intn(255)),
|
|
callback: func(interface{}) (bool, bool) { return true, true },
|
|
}
|
|
binary.BigEndian.PutUint64(p.from[:], uint64(i))
|
|
if p.ptype <= 128 {
|
|
p.errc = timeoutErr
|
|
test.udp.addReplyMatcher <- p
|
|
nTimeouts++
|
|
} else {
|
|
p.errc = nilErr
|
|
test.udp.addReplyMatcher <- p
|
|
time.AfterFunc(randomDuration(60*time.Millisecond), func() {
|
|
if !test.udp.handleReply(p.from, p.ip, p.ptype, nil) {
|
|
t.Logf("not matched: %v", p)
|
|
}
|
|
})
|
|
}
|
|
time.Sleep(randomDuration(30 * time.Millisecond))
|
|
}
|
|
|
|
// Check that all timeouts were delivered and that the rest got nil errors.
|
|
// The replies must be delivered.
|
|
var (
|
|
recvDeadline = time.After(20 * time.Second)
|
|
nTimeoutsRecv, nNil = 0, 0
|
|
)
|
|
for i := 0; i < nReqs; i++ {
|
|
select {
|
|
case err := <-timeoutErr:
|
|
if err != errTimeout {
|
|
t.Fatalf("got non-timeout error on timeoutErr %d: %v", i, err)
|
|
}
|
|
nTimeoutsRecv++
|
|
case err := <-nilErr:
|
|
if err != nil {
|
|
t.Fatalf("got non-nil error on nilErr %d: %v", i, err)
|
|
}
|
|
nNil++
|
|
case <-recvDeadline:
|
|
t.Fatalf("exceeded recv deadline")
|
|
}
|
|
}
|
|
if nTimeoutsRecv != nTimeouts {
|
|
t.Errorf("wrong number of timeout errors received: got %d, want %d", nTimeoutsRecv, nTimeouts)
|
|
}
|
|
if nNil != nReqs-nTimeouts {
|
|
t.Errorf("wrong number of successful replies: got %d, want %d", nNil, nReqs-nTimeouts)
|
|
}
|
|
}
|
|
|
|
func TestUDPv4_findnodeTimeout(t *testing.T) {
|
|
t.Parallel()
|
|
test := newUDPTest(t)
|
|
defer test.close()
|
|
|
|
toaddr := &net.UDPAddr{IP: net.ParseIP("1.2.3.4"), Port: 2222}
|
|
toid := enode.ID{1, 2, 3, 4}
|
|
target := encPubkey{4, 5, 6, 7}
|
|
result, err := test.udp.findnode(toid, toaddr, target)
|
|
if err != errTimeout {
|
|
t.Error("expected timeout error, got", err)
|
|
}
|
|
if len(result) > 0 {
|
|
t.Error("expected empty result, got", result)
|
|
}
|
|
}
|
|
|
|
func TestUDPv4_findnode(t *testing.T) {
|
|
test := newUDPTest(t)
|
|
defer test.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.
|
|
nodes := &nodesByDistance{target: testTarget.id()}
|
|
live := make(map[enode.ID]bool)
|
|
numCandidates := 2 * bucketSize
|
|
for i := 0; i < numCandidates; i++ {
|
|
key := newkey()
|
|
ip := net.IP{10, 13, 0, byte(i)}
|
|
n := wrapNode(enode.NewV4(&key.PublicKey, ip, 0, 2000))
|
|
// Ensure half of table content isn't verified live yet.
|
|
if i > numCandidates/2 {
|
|
n.livenessChecks = 1
|
|
live[n.ID()] = true
|
|
}
|
|
nodes.push(n, numCandidates)
|
|
}
|
|
fillTable(test.table, nodes.entries)
|
|
|
|
// ensure there's a bond with the test node,
|
|
// findnode won't be accepted otherwise.
|
|
remoteID := encodePubkey(&test.remotekey.PublicKey).id()
|
|
test.table.db.UpdateLastPongReceived(remoteID, test.remoteaddr.IP, time.Now())
|
|
|
|
// check that closest neighbors are returned.
|
|
expected := test.table.closest(testTarget.id(), bucketSize, true)
|
|
test.packetIn(nil, p_findnodeV4, &findnodeV4{Target: testTarget, Expiration: futureExp})
|
|
waitNeighbors := func(want []*node) {
|
|
test.waitPacketOut(func(p *neighborsV4, to *net.UDPAddr, hash []byte) {
|
|
if len(p.Nodes) != len(want) {
|
|
t.Errorf("wrong number of results: got %d, want %d", len(p.Nodes), bucketSize)
|
|
}
|
|
for i, n := range p.Nodes {
|
|
if n.ID.id() != want[i].ID() {
|
|
t.Errorf("result mismatch at %d:\n got: %v\n want: %v", i, n, expected.entries[i])
|
|
}
|
|
if !live[n.ID.id()] {
|
|
t.Errorf("result includes dead node %v", n.ID.id())
|
|
}
|
|
}
|
|
})
|
|
}
|
|
// Receive replies.
|
|
want := expected.entries
|
|
if len(want) > maxNeighbors {
|
|
waitNeighbors(want[:maxNeighbors])
|
|
want = want[maxNeighbors:]
|
|
}
|
|
waitNeighbors(want)
|
|
}
|
|
|
|
func TestUDPv4_findnodeMultiReply(t *testing.T) {
|
|
test := newUDPTest(t)
|
|
defer test.close()
|
|
|
|
rid := enode.PubkeyToIDV4(&test.remotekey.PublicKey)
|
|
test.table.db.UpdateLastPingReceived(rid, test.remoteaddr.IP, time.Now())
|
|
|
|
// queue a pending findnode request
|
|
resultc, errc := make(chan []*node), make(chan error)
|
|
go func() {
|
|
rid := encodePubkey(&test.remotekey.PublicKey).id()
|
|
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 *findnodeV4, to *net.UDPAddr, hash []byte) {
|
|
if p.Target != testTarget {
|
|
t.Errorf("wrong target: got %v, want %v", p.Target, testTarget)
|
|
}
|
|
})
|
|
|
|
// send the reply as two packets.
|
|
list := []*node{
|
|
wrapNode(enode.MustParseV4("enode://ba85011c70bcc5c04d8607d3a0ed29aa6179c092cbdda10d5d32684fb33ed01bd94f588ca8f91ac48318087dcb02eaf36773a7a453f0eedd6742af668097b29c@10.0.1.16:30303?discport=30304")),
|
|
wrapNode(enode.MustParseV4("enode://81fa361d25f157cd421c60dcc28d8dac5ef6a89476633339c5df30287474520caca09627da18543d9079b5b288698b542d56167aa5c09111e55acdbbdf2ef799@10.0.1.16:30303")),
|
|
wrapNode(enode.MustParseV4("enode://9bffefd833d53fac8e652415f4973bee289e8b1a5c6c4cbe70abf817ce8a64cee11b823b66a987f51aaa9fba0d6a91b3e6bf0d5a5d1042de8e9eeea057b217f8@10.0.1.36:30301?discport=17")),
|
|
wrapNode(enode.MustParseV4("enode://1b5b4aa662d7cb44a7221bfba67302590b643028197a7d5214790f3bac7aaa4a3241be9e83c09cf1f6c69d007c634faae3dc1b1221793e8446c0b3a09de65960@10.0.1.16:30303")),
|
|
}
|
|
rpclist := make([]rpcNode, len(list))
|
|
for i := range list {
|
|
rpclist[i] = nodeToRPC(list[i])
|
|
}
|
|
test.packetIn(nil, p_neighborsV4, &neighborsV4{Expiration: futureExp, Nodes: rpclist[:2]})
|
|
test.packetIn(nil, p_neighborsV4, &neighborsV4{Expiration: futureExp, Nodes: rpclist[2:]})
|
|
|
|
// check that the sent neighbors are all returned by findnode
|
|
select {
|
|
case result := <-resultc:
|
|
want := append(list[:2], list[3:]...)
|
|
if !reflect.DeepEqual(result, want) {
|
|
t.Errorf("neighbors mismatch:\n got: %v\n want: %v", result, want)
|
|
}
|
|
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 TestUDPv4_pingMatch(t *testing.T) {
|
|
test := newUDPTest(t)
|
|
defer test.close()
|
|
|
|
randToken := make([]byte, 32)
|
|
crand.Read(randToken)
|
|
|
|
test.packetIn(nil, p_pingV4, &pingV4{From: testRemote, To: testLocalAnnounced, Version: 4, Expiration: futureExp})
|
|
test.waitPacketOut(func(*pongV4, *net.UDPAddr, []byte) {})
|
|
test.waitPacketOut(func(*pingV4, *net.UDPAddr, []byte) {})
|
|
test.packetIn(errUnsolicitedReply, p_pongV4, &pongV4{ReplyTok: randToken, To: testLocalAnnounced, Expiration: futureExp})
|
|
}
|
|
|
|
func TestUDPv4_pingMatchIP(t *testing.T) {
|
|
test := newUDPTest(t)
|
|
defer test.close()
|
|
|
|
test.packetIn(nil, p_pingV4, &pingV4{From: testRemote, To: testLocalAnnounced, Version: 4, Expiration: futureExp})
|
|
test.waitPacketOut(func(*pongV4, *net.UDPAddr, []byte) {})
|
|
|
|
test.waitPacketOut(func(p *pingV4, to *net.UDPAddr, hash []byte) {
|
|
wrongAddr := &net.UDPAddr{IP: net.IP{33, 44, 1, 2}, Port: 30000}
|
|
test.packetInFrom(errUnsolicitedReply, test.remotekey, wrongAddr, p_pongV4, &pongV4{
|
|
ReplyTok: hash,
|
|
To: testLocalAnnounced,
|
|
Expiration: futureExp,
|
|
})
|
|
})
|
|
}
|
|
|
|
func TestUDPv4_successfulPing(t *testing.T) {
|
|
test := newUDPTest(t)
|
|
added := make(chan *node, 1)
|
|
test.table.nodeAddedHook = func(n *node) { added <- n }
|
|
defer test.close()
|
|
|
|
// The remote side sends a ping packet to initiate the exchange.
|
|
go test.packetIn(nil, p_pingV4, &pingV4{From: testRemote, To: testLocalAnnounced, Version: 4, Expiration: futureExp})
|
|
|
|
// the ping is replied to.
|
|
test.waitPacketOut(func(p *pongV4, to *net.UDPAddr, hash []byte) {
|
|
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 *pingV4, to *net.UDPAddr, hash []byte) {
|
|
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)
|
|
}
|
|
test.packetIn(nil, p_pongV4, &pongV4{ReplyTok: hash, Expiration: futureExp})
|
|
})
|
|
|
|
// the node should be added to the table shortly after getting the
|
|
// pong packet.
|
|
select {
|
|
case n := <-added:
|
|
rid := encodePubkey(&test.remotekey.PublicKey).id()
|
|
if n.ID() != rid {
|
|
t.Errorf("node has wrong ID: got %v, want %v", n.ID(), rid)
|
|
}
|
|
if !n.IP().Equal(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() != int(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: &pingV4{
|
|
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: &pingV4{
|
|
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: &pingV4{
|
|
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: &pongV4{
|
|
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: &findnodeV4{
|
|
Target: hexEncPubkey("ca634cae0d49acb401d8a4c6b6fe8c55b70d115bf400769cc1400f3258cd31387574077f301b421bc84df7266c44e9e6d569fc56be00812904767bf5ccd1fc7f"),
|
|
Expiration: 1136239445,
|
|
Rest: []rlp.RawValue{{0x82, 0x99, 0x99}, {0x83, 0x99, 0x99, 0x99}},
|
|
},
|
|
},
|
|
{
|
|
input: "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",
|
|
wantPacket: &neighborsV4{
|
|
Nodes: []rpcNode{
|
|
{
|
|
ID: hexEncPubkey("3155e1427f85f10a5c9a7755877748041af1bcd8d474ec065eb33df57a97babf54bfd2103575fa829115d224c523596b401065a97f74010610fce76382c0bf32"),
|
|
IP: net.ParseIP("99.33.22.55").To4(),
|
|
UDP: 4444,
|
|
TCP: 4445,
|
|
},
|
|
{
|
|
ID: hexEncPubkey("312c55512422cf9b8a4097e9a6ad79402e87a15ae909a4bfefa22398f03d20951933beea1e4dfa6f968212385e829f04c2d314fc2d4e255e0d3bc08792b069db"),
|
|
IP: net.ParseIP("1.2.3.4").To4(),
|
|
UDP: 1,
|
|
TCP: 1,
|
|
},
|
|
{
|
|
ID: hexEncPubkey("38643200b172dcfef857492156971f0e6aa2c538d8b74010f8e140811d53b98c765dd2d96126051913f44582e8c199ad7c6d6819e9a56483f637feaac9448aac"),
|
|
IP: net.ParseIP("2001:db8:3c4d:15::abcd:ef12"),
|
|
UDP: 3333,
|
|
TCP: 3333,
|
|
},
|
|
{
|
|
ID: hexEncPubkey("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 TestUDPv4_forwardCompatibility(t *testing.T) {
|
|
testkey, _ := crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
|
|
wantNodeKey := encodePubkey(&testkey.PublicKey)
|
|
|
|
for _, test := range testPackets {
|
|
input, err := hex.DecodeString(test.input)
|
|
if err != nil {
|
|
t.Fatalf("invalid hex: %s", test.input)
|
|
}
|
|
packet, nodekey, _, err := decodeV4(input)
|
|
if err != nil {
|
|
t.Errorf("did not accept packet %s\n%v", test.input, err)
|
|
continue
|
|
}
|
|
if !reflect.DeepEqual(packet, test.wantPacket) {
|
|
t.Errorf("got %s\nwant %s", spew.Sdump(packet), spew.Sdump(test.wantPacket))
|
|
}
|
|
if nodekey != wantNodeKey {
|
|
t.Errorf("got id %v\nwant id %v", nodekey, wantNodeKey)
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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 []dgram
|
|
}
|
|
|
|
type dgram struct {
|
|
to net.UDPAddr
|
|
data []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, dgram{*to, b})
|
|
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
|
|
}
|
|
c.cond.Broadcast()
|
|
return nil
|
|
}
|
|
|
|
func (c *dgramPipe) LocalAddr() net.Addr {
|
|
return &net.UDPAddr{IP: testLocal.IP, Port: int(testLocal.UDP)}
|
|
}
|
|
|
|
func (c *dgramPipe) receive() (dgram, bool) {
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
for len(c.queue) == 0 && !c.closed {
|
|
c.cond.Wait()
|
|
}
|
|
if c.closed {
|
|
return dgram{}, false
|
|
}
|
|
p := c.queue[0]
|
|
copy(c.queue, c.queue[1:])
|
|
c.queue = c.queue[:len(c.queue)-1]
|
|
return p, true
|
|
}
|