// mockRemotePeer creates a basic inbound peer listening on the simnet port for
// use with Example_peerConnection. It does not return until the listner is
// active.
func mockRemotePeer() error {
// Configure peer to act as a simnet node that offers no services.
peerCfg := &peer.Config{
UserAgentName: "peer", // User agent name to advertise.
UserAgentVersion: "1.0.0", // User agent version to advertise.
ChainParams: &chaincfg.SimNetParams,
}
// Accept connections on the simnet port.
listener, err := net.Listen("tcp", "127.0.0.1:18555")
if err != nil {
return err
}
go func() {
conn, err := listener.Accept()
if err != nil {
fmt.Printf("Accept: error %v\n", err)
return
}
// Create and start the inbound peer.
p := peer.NewInboundPeer(peerCfg, conn)
if err := p.Start(); err != nil {
fmt.Printf("Start: error %v\n", err)
return
}
}()
return nil
}
// TestPeerListeners tests that the peer listeners are called as expected.
func TestPeerListeners(t *testing.T) {
verack := make(chan struct{}, 1)
ok := make(chan wire.Message, 20)
peerCfg := &peer.Config{
Listeners: peer.MessageListeners{
OnGetAddr: func(p *peer.Peer, msg *wire.MsgGetAddr) {
ok <- msg
},
OnAddr: func(p *peer.Peer, msg *wire.MsgAddr) {
ok <- msg
},
OnPing: func(p *peer.Peer, msg *wire.MsgPing) {
ok <- msg
},
OnPong: func(p *peer.Peer, msg *wire.MsgPong) {
ok <- msg
},
OnAlert: func(p *peer.Peer, msg *wire.MsgAlert) {
ok <- msg
},
OnMemPool: func(p *peer.Peer, msg *wire.MsgMemPool) {
ok <- msg
},
OnTx: func(p *peer.Peer, msg *wire.MsgTx) {
ok <- msg
},
OnBlock: func(p *peer.Peer, msg *wire.MsgBlock, buf []byte) {
ok <- msg
},
OnInv: func(p *peer.Peer, msg *wire.MsgInv) {
ok <- msg
},
OnHeaders: func(p *peer.Peer, msg *wire.MsgHeaders) {
ok <- msg
},
OnNotFound: func(p *peer.Peer, msg *wire.MsgNotFound) {
ok <- msg
},
OnGetData: func(p *peer.Peer, msg *wire.MsgGetData) {
ok <- msg
},
OnGetBlocks: func(p *peer.Peer, msg *wire.MsgGetBlocks) {
ok <- msg
},
OnGetHeaders: func(p *peer.Peer, msg *wire.MsgGetHeaders) {
ok <- msg
},
OnFilterAdd: func(p *peer.Peer, msg *wire.MsgFilterAdd) {
ok <- msg
},
OnFilterClear: func(p *peer.Peer, msg *wire.MsgFilterClear) {
ok <- msg
},
OnFilterLoad: func(p *peer.Peer, msg *wire.MsgFilterLoad) {
ok <- msg
},
OnMerkleBlock: func(p *peer.Peer, msg *wire.MsgMerkleBlock) {
ok <- msg
},
OnVersion: func(p *peer.Peer, msg *wire.MsgVersion) {
ok <- msg
},
OnVerAck: func(p *peer.Peer, msg *wire.MsgVerAck) {
verack <- struct{}{}
},
OnReject: func(p *peer.Peer, msg *wire.MsgReject) {
ok <- msg
},
OnSendHeaders: func(p *peer.Peer, msg *wire.MsgSendHeaders) {
ok <- msg
},
},
UserAgentName: "peer",
UserAgentVersion: "1.0",
ChainParams: &chaincfg.MainNetParams,
Services: wire.SFNodeBloom,
}
inConn, outConn := pipe(
&conn{raddr: "10.0.0.1:8333"},
&conn{raddr: "10.0.0.2:8333"},
)
inPeer := peer.NewInboundPeer(peerCfg)
inPeer.Connect(inConn)
peerCfg.Listeners = peer.MessageListeners{
OnVerAck: func(p *peer.Peer, msg *wire.MsgVerAck) {
verack <- struct{}{}
},
}
outPeer, err := peer.NewOutboundPeer(peerCfg, "10.0.0.1:8333")
if err != nil {
t.Errorf("NewOutboundPeer: unexpected err %v\n", err)
return
}
outPeer.Connect(outConn)
for i := 0; i < 2; i++ {
select {
case <-verack:
case <-time.After(time.Second * 1):
t.Errorf("TestPeerListeners: verack timeout\n")
return
}
}
tests := []struct {
listener string
msg wire.Message
}{
{
"OnGetAddr",
wire.NewMsgGetAddr(),
},
{
"OnAddr",
wire.NewMsgAddr(),
},
{
"OnPing",
wire.NewMsgPing(42),
},
{
"OnPong",
wire.NewMsgPong(42),
},
{
"OnAlert",
wire.NewMsgAlert([]byte("payload"), []byte("signature")),
},
{
"OnMemPool",
wire.NewMsgMemPool(),
},
{
"OnTx",
wire.NewMsgTx(),
},
{
"OnBlock",
wire.NewMsgBlock(wire.NewBlockHeader(0, &chainhash.Hash{},
&chainhash.Hash{}, &chainhash.Hash{}, 1, [6]byte{},
1, 1, 1, 1, 1, 1, 1, 1, 1, [32]byte{},
binary.LittleEndian.Uint32([]byte{0xb0, 0x1d, 0xfa, 0xce}))),
},
{
"OnInv",
wire.NewMsgInv(),
},
{
"OnHeaders",
wire.NewMsgHeaders(),
},
{
"OnNotFound",
wire.NewMsgNotFound(),
},
{
"OnGetData",
wire.NewMsgGetData(),
},
{
"OnGetBlocks",
wire.NewMsgGetBlocks(&chainhash.Hash{}),
},
{
"OnGetHeaders",
wire.NewMsgGetHeaders(),
},
{
"OnFilterAdd",
wire.NewMsgFilterAdd([]byte{0x01}),
},
{
"OnFilterClear",
wire.NewMsgFilterClear(),
},
{
"OnFilterLoad",
wire.NewMsgFilterLoad([]byte{0x01}, 10, 0, wire.BloomUpdateNone),
},
{
"OnMerkleBlock",
wire.NewMsgMerkleBlock(wire.NewBlockHeader(0,
&chainhash.Hash{}, &chainhash.Hash{},
&chainhash.Hash{}, 1, [6]byte{},
1, 1, 1, 1, 1, 1, 1, 1, 1, [32]byte{},
binary.LittleEndian.Uint32([]byte{0xb0, 0x1d, 0xfa, 0xce}))),
},
// only one version message is allowed
// only one verack message is allowed
{
"OnReject",
wire.NewMsgReject("block", wire.RejectDuplicate, "dupe block"),
},
{
"OnSendHeaders",
wire.NewMsgSendHeaders(),
},
}
t.Logf("Running %d tests", len(tests))
for _, test := range tests {
// Queue the test message
outPeer.QueueMessage(test.msg, nil)
select {
case <-ok:
case <-time.After(time.Second * 1):
t.Errorf("TestPeerListeners: %s timeout", test.listener)
return
}
}
inPeer.Disconnect()
outPeer.Disconnect()
}
// TestPeerConnection tests connection between inbound and outbound peers.
func TestPeerConnection(t *testing.T) {
verack := make(chan struct{})
peerCfg := &peer.Config{
Listeners: peer.MessageListeners{
OnVerAck: func(p *peer.Peer, msg *wire.MsgVerAck) {
verack <- struct{}{}
},
OnWrite: func(p *peer.Peer, bytesWritten int, msg wire.Message,
err error) {
if _, ok := msg.(*wire.MsgVerAck); ok {
verack <- struct{}{}
}
},
},
UserAgentName: "peer",
UserAgentVersion: "1.0",
ChainParams: &chaincfg.MainNetParams,
Services: 0,
}
wantStats := peerStats{
wantUserAgent: wire.DefaultUserAgent + "peer:1.0/",
wantServices: 0,
wantProtocolVersion: peer.MaxProtocolVersion,
wantConnected: true,
wantVersionKnown: true,
wantVerAckReceived: true,
wantLastPingTime: time.Time{},
wantLastPingNonce: uint64(0),
wantLastPingMicros: int64(0),
wantTimeOffset: int64(0),
wantBytesSent: 158, // 134 version + 24 verack
wantBytesReceived: 158,
}
tests := []struct {
name string
setup func() (*peer.Peer, *peer.Peer, error)
}{
{
"basic handshake",
func() (*peer.Peer, *peer.Peer, error) {
inConn, outConn := pipe(
&conn{raddr: "10.0.0.1:8333"},
&conn{raddr: "10.0.0.2:8333"},
)
inPeer := peer.NewInboundPeer(peerCfg)
inPeer.Connect(inConn)
outPeer, err := peer.NewOutboundPeer(peerCfg, "10.0.0.2:8333")
if err != nil {
return nil, nil, err
}
outPeer.Connect(outConn)
for i := 0; i < 4; i++ {
select {
case <-verack:
case <-time.After(time.Second):
return nil, nil, errors.New("verack timeout")
}
}
return inPeer, outPeer, nil
},
},
{
"socks proxy",
func() (*peer.Peer, *peer.Peer, error) {
inConn, outConn := pipe(
&conn{raddr: "10.0.0.1:8333", proxy: true},
&conn{raddr: "10.0.0.2:8333"},
)
inPeer := peer.NewInboundPeer(peerCfg)
inPeer.Connect(inConn)
outPeer, err := peer.NewOutboundPeer(peerCfg, "10.0.0.2:8333")
if err != nil {
return nil, nil, err
}
outPeer.Connect(outConn)
for i := 0; i < 4; i++ {
select {
case <-verack:
case <-time.After(time.Second):
return nil, nil, errors.New("verack timeout")
}
}
return inPeer, outPeer, nil
},
},
}
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
inPeer, outPeer, err := test.setup()
if err != nil {
t.Errorf("TestPeerConnection setup #%d: unexpected err %v", i, err)
return
}
testPeer(t, inPeer, wantStats)
testPeer(t, outPeer, wantStats)
inPeer.Disconnect()
outPeer.Disconnect()
inPeer.WaitForDisconnect()
outPeer.WaitForDisconnect()
}
}