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p2p/discover: move discv4 encoding to new 'v4wire' package (#21147)

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This moves all v4 protocol definitions to a new package, p2p/discover/v4wire.
The new package will be used for low-level protocol tests.
This commit is contained in:
Felix Lange
2020-06-02 13:20:19 +02:00
committed by GitHub
parent cd57d5cd38
commit 723bd8c17f
6 changed files with 654 additions and 515 deletions
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237
p2p/discover/v4_udp_test.go
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@ -21,7 +21,6 @@ import (
"crypto/ecdsa"
crand "crypto/rand"
"encoding/binary"
"encoding/hex"
"errors"
"io"
"math/rand"
@ -31,23 +30,20 @@ import (
"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/discover/v4wire"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/p2p/enr"
"github.com/ethereum/go-ethereum/rlp"
)
// 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}
testTarget = v4wire.Pubkey{0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1}
testRemote = v4wire.Endpoint{IP: net.ParseIP("1.1.1.1").To4(), UDP: 1, TCP: 2}
testLocalAnnounced = v4wire.Endpoint{IP: net.ParseIP("2.2.2.2").To4(), UDP: 3, TCP: 4}
testLocal = v4wire.Endpoint{IP: net.ParseIP("3.3.3.3").To4(), UDP: 5, TCP: 6}
)
type udpTest struct {
@ -88,19 +84,19 @@ func (test *udpTest) close() {
}
// handles a packet as if it had been sent to the transport.
func (test *udpTest) packetIn(wantError error, data packetV4) {
func (test *udpTest) packetIn(wantError error, data v4wire.Packet) {
test.t.Helper()
test.packetInFrom(wantError, test.remotekey, test.remoteaddr, 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, data packetV4) {
func (test *udpTest) packetInFrom(wantError error, key *ecdsa.PrivateKey, addr *net.UDPAddr, data v4wire.Packet) {
test.t.Helper()
enc, _, err := test.udp.encode(key, data)
enc, _, err := v4wire.Encode(key, data)
if err != nil {
test.t.Errorf("%s encode error: %v", data.name(), err)
test.t.Errorf("%s encode error: %v", data.Name(), err)
}
test.sent = append(test.sent, enc)
if err = test.udp.handlePacket(addr, enc); err != wantError {
@ -120,7 +116,7 @@ func (test *udpTest) waitPacketOut(validate interface{}) (closed bool) {
test.t.Error("packet receive error:", err)
return false
}
p, _, hash, err := decodeV4(dgram.data)
p, _, hash, err := v4wire.Decode(dgram.data)
if err != nil {
test.t.Errorf("sent packet decode error: %v", err)
return false
@ -139,10 +135,10 @@ func TestUDPv4_packetErrors(t *testing.T) {
test := newUDPTest(t)
defer test.close()
test.packetIn(errExpired, &pingV4{From: testRemote, To: testLocalAnnounced, Version: 4})
test.packetIn(errUnsolicitedReply, &pongV4{ReplyTok: []byte{}, Expiration: futureExp})
test.packetIn(errUnknownNode, &findnodeV4{Expiration: futureExp})
test.packetIn(errUnsolicitedReply, &neighborsV4{Expiration: futureExp})
test.packetIn(errExpired, &v4wire.Ping{From: testRemote, To: testLocalAnnounced, Version: 4})
test.packetIn(errUnsolicitedReply, &v4wire.Pong{ReplyTok: []byte{}, Expiration: futureExp})
test.packetIn(errUnknownNode, &v4wire.Findnode{Expiration: futureExp})
test.packetIn(errUnsolicitedReply, &v4wire.Neighbors{Expiration: futureExp})
}
func TestUDPv4_pingTimeout(t *testing.T) {
@ -160,13 +156,8 @@ func TestUDPv4_pingTimeout(t *testing.T) {
type testPacket byte
func (req testPacket) kind() byte { return byte(req) }
func (req testPacket) name() string { return "" }
func (req testPacket) preverify(*UDPv4, *net.UDPAddr, enode.ID, encPubkey) error {
return nil
}
func (req testPacket) handle(*UDPv4, *net.UDPAddr, enode.ID, []byte) {
}
func (req testPacket) Kind() byte { return byte(req) }
func (req testPacket) Name() string { return "" }
func TestUDPv4_responseTimeouts(t *testing.T) {
t.Parallel()
@ -191,7 +182,7 @@ func TestUDPv4_responseTimeouts(t *testing.T) {
// within the timeout window.
p := &replyMatcher{
ptype: byte(rand.Intn(255)),
callback: func(interface{}) (bool, bool) { return true, true },
callback: func(v4wire.Packet) (bool, bool) { return true, true },
}
binary.BigEndian.PutUint64(p.from[:], uint64(i))
if p.ptype <= 128 {
@ -247,7 +238,7 @@ func TestUDPv4_findnodeTimeout(t *testing.T) {
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}
target := v4wire.Pubkey{4, 5, 6, 7}
result, err := test.udp.findnode(toid, toaddr, target)
if err != errTimeout {
t.Error("expected timeout error, got", err)
@ -264,7 +255,7 @@ func TestUDPv4_findnode(t *testing.T) {
// 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()}
nodes := &nodesByDistance{target: testTarget.ID()}
live := make(map[enode.ID]bool)
numCandidates := 2 * bucketSize
for i := 0; i < numCandidates; i++ {
@ -282,32 +273,32 @@ func TestUDPv4_findnode(t *testing.T) {
// ensure there's a bond with the test node,
// findnode won't be accepted otherwise.
remoteID := encodePubkey(&test.remotekey.PublicKey).id()
remoteID := v4wire.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, &findnodeV4{Target: testTarget, Expiration: futureExp})
expected := test.table.closest(testTarget.ID(), bucketSize, true)
test.packetIn(nil, &v4wire.Findnode{Target: testTarget, Expiration: futureExp})
waitNeighbors := func(want []*node) {
test.waitPacketOut(func(p *neighborsV4, to *net.UDPAddr, hash []byte) {
test.waitPacketOut(func(p *v4wire.Neighbors, 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() {
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())
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:]
if len(want) > v4wire.MaxNeighbors {
waitNeighbors(want[:v4wire.MaxNeighbors])
want = want[v4wire.MaxNeighbors:]
}
waitNeighbors(want)
}
@ -333,7 +324,7 @@ func TestUDPv4_findnodeMultiReply(t *testing.T) {
// 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) {
test.waitPacketOut(func(p *v4wire.Findnode, to *net.UDPAddr, hash []byte) {
if p.Target != testTarget {
t.Errorf("wrong target: got %v, want %v", p.Target, testTarget)
}
@ -346,12 +337,12 @@ func TestUDPv4_findnodeMultiReply(t *testing.T) {
wrapNode(enode.MustParse("enode://9bffefd833d53fac8e652415f4973bee289e8b1a5c6c4cbe70abf817ce8a64cee11b823b66a987f51aaa9fba0d6a91b3e6bf0d5a5d1042de8e9eeea057b217f8@10.0.1.36:30301?discport=17")),
wrapNode(enode.MustParse("enode://1b5b4aa662d7cb44a7221bfba67302590b643028197a7d5214790f3bac7aaa4a3241be9e83c09cf1f6c69d007c634faae3dc1b1221793e8446c0b3a09de65960@10.0.1.16:30303")),
}
rpclist := make([]rpcNode, len(list))
rpclist := make([]v4wire.Node, len(list))
for i := range list {
rpclist[i] = nodeToRPC(list[i])
}
test.packetIn(nil, &neighborsV4{Expiration: futureExp, Nodes: rpclist[:2]})
test.packetIn(nil, &neighborsV4{Expiration: futureExp, Nodes: rpclist[2:]})
test.packetIn(nil, &v4wire.Neighbors{Expiration: futureExp, Nodes: rpclist[:2]})
test.packetIn(nil, &v4wire.Neighbors{Expiration: futureExp, Nodes: rpclist[2:]})
// check that the sent neighbors are all returned by findnode
select {
@ -375,10 +366,10 @@ func TestUDPv4_pingMatch(t *testing.T) {
randToken := make([]byte, 32)
crand.Read(randToken)
test.packetIn(nil, &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, &pongV4{ReplyTok: randToken, To: testLocalAnnounced, Expiration: futureExp})
test.packetIn(nil, &v4wire.Ping{From: testRemote, To: testLocalAnnounced, Version: 4, Expiration: futureExp})
test.waitPacketOut(func(*v4wire.Pong, *net.UDPAddr, []byte) {})
test.waitPacketOut(func(*v4wire.Ping, *net.UDPAddr, []byte) {})
test.packetIn(errUnsolicitedReply, &v4wire.Pong{ReplyTok: randToken, To: testLocalAnnounced, Expiration: futureExp})
}
// This test checks that reply matching of pong verifies the sender IP address.
@ -386,12 +377,12 @@ func TestUDPv4_pingMatchIP(t *testing.T) {
test := newUDPTest(t)
defer test.close()
test.packetIn(nil, &pingV4{From: testRemote, To: testLocalAnnounced, Version: 4, Expiration: futureExp})
test.waitPacketOut(func(*pongV4, *net.UDPAddr, []byte) {})
test.packetIn(nil, &v4wire.Ping{From: testRemote, To: testLocalAnnounced, Version: 4, Expiration: futureExp})
test.waitPacketOut(func(*v4wire.Pong, *net.UDPAddr, []byte) {})
test.waitPacketOut(func(p *pingV4, to *net.UDPAddr, hash []byte) {
test.waitPacketOut(func(p *v4wire.Ping, to *net.UDPAddr, hash []byte) {
wrongAddr := &net.UDPAddr{IP: net.IP{33, 44, 1, 2}, Port: 30000}
test.packetInFrom(errUnsolicitedReply, test.remotekey, wrongAddr, &pongV4{
test.packetInFrom(errUnsolicitedReply, test.remotekey, wrongAddr, &v4wire.Pong{
ReplyTok: hash,
To: testLocalAnnounced,
Expiration: futureExp,
@ -406,15 +397,15 @@ func TestUDPv4_successfulPing(t *testing.T) {
defer test.close()
// The remote side sends a ping packet to initiate the exchange.
go test.packetIn(nil, &pingV4{From: testRemote, To: testLocalAnnounced, Version: 4, Expiration: futureExp})
go test.packetIn(nil, &v4wire.Ping{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]
test.waitPacketOut(func(p *v4wire.Pong, to *net.UDPAddr, hash []byte) {
pinghash := test.sent[0][:32]
if !bytes.Equal(p.ReplyTok, pinghash) {
t.Errorf("got pong.ReplyTok %x, want %x", p.ReplyTok, pinghash)
}
wantTo := rpcEndpoint{
wantTo := v4wire.Endpoint{
// 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
@ -426,11 +417,11 @@ func TestUDPv4_successfulPing(t *testing.T) {
})
// Remote is unknown, the table pings back.
test.waitPacketOut(func(p *pingV4, to *net.UDPAddr, hash []byte) {
test.waitPacketOut(func(p *v4wire.Ping, 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{
wantTo := v4wire.Endpoint{
// The mirrored UDP address is the UDP packet sender.
IP: test.remoteaddr.IP,
UDP: uint16(test.remoteaddr.Port),
@ -439,7 +430,7 @@ func TestUDPv4_successfulPing(t *testing.T) {
if !reflect.DeepEqual(p.To, wantTo) {
t.Errorf("got ping.To %v, want %v", p.To, wantTo)
}
test.packetIn(nil, &pongV4{ReplyTok: hash, Expiration: futureExp})
test.packetIn(nil, &v4wire.Pong{ReplyTok: hash, Expiration: futureExp})
})
// The node should be added to the table shortly after getting the
@ -473,25 +464,25 @@ func TestUDPv4_EIP868(t *testing.T) {
wantNode := test.udp.localNode.Node()
// ENR requests aren't allowed before endpoint proof.
test.packetIn(errUnknownNode, &enrRequestV4{Expiration: futureExp})
test.packetIn(errUnknownNode, &v4wire.ENRRequest{Expiration: futureExp})
// Perform endpoint proof and check for sequence number in packet tail.
test.packetIn(nil, &pingV4{Expiration: futureExp})
test.waitPacketOut(func(p *pongV4, addr *net.UDPAddr, hash []byte) {
if seq := seqFromTail(p.Rest); seq != wantNode.Seq() {
t.Errorf("wrong sequence number in pong: %d, want %d", seq, wantNode.Seq())
test.packetIn(nil, &v4wire.Ping{Expiration: futureExp})
test.waitPacketOut(func(p *v4wire.Pong, addr *net.UDPAddr, hash []byte) {
if p.ENRSeq() != wantNode.Seq() {
t.Errorf("wrong sequence number in pong: %d, want %d", p.ENRSeq(), wantNode.Seq())
}
})
test.waitPacketOut(func(p *pingV4, addr *net.UDPAddr, hash []byte) {
if seq := seqFromTail(p.Rest); seq != wantNode.Seq() {
t.Errorf("wrong sequence number in ping: %d, want %d", seq, wantNode.Seq())
test.waitPacketOut(func(p *v4wire.Ping, addr *net.UDPAddr, hash []byte) {
if p.ENRSeq() != wantNode.Seq() {
t.Errorf("wrong sequence number in ping: %d, want %d", p.ENRSeq(), wantNode.Seq())
}
test.packetIn(nil, &pongV4{Expiration: futureExp, ReplyTok: hash})
test.packetIn(nil, &v4wire.Pong{Expiration: futureExp, ReplyTok: hash})
})
// Request should work now.
test.packetIn(nil, &enrRequestV4{Expiration: futureExp})
test.waitPacketOut(func(p *enrResponseV4, addr *net.UDPAddr, hash []byte) {
test.packetIn(nil, &v4wire.ENRRequest{Expiration: futureExp})
test.waitPacketOut(func(p *v4wire.ENRResponse, addr *net.UDPAddr, hash []byte) {
n, err := enode.New(enode.ValidSchemes, &p.Record)
if err != nil {
t.Fatalf("invalid record: %v", err)
@ -502,116 +493,6 @@ func TestUDPv4_EIP868(t *testing.T) {
})
}
// EIP-8 test vectors.
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