// TestGetData tests the MsgGetData API.
func TestGetData(t *testing.T) {
pver := wire.ProtocolVersion
// Ensure the command is expected value.
wantCmd := "getdata"
msg := wire.NewMsgGetData()
if cmd := msg.Command(); cmd != wantCmd {
t.Errorf("NewMsgGetData: wrong command - got %v want %v",
cmd, wantCmd)
}
// Ensure max payload is expected value for latest protocol version.
// Num inventory vectors (varInt) + max allowed inventory vectors.
wantPayload := uint32(1800009)
maxPayload := msg.MaxPayloadLength(pver)
if maxPayload != wantPayload {
t.Errorf("MaxPayloadLength: wrong max payload length for "+
"protocol version %d - got %v, want %v", pver,
maxPayload, wantPayload)
}
// Ensure inventory vectors are added properly.
hash := wire.ShaHash{}
iv := wire.NewInvVect(wire.InvTypeBlock, &hash)
err := msg.AddInvVect(iv)
if err != nil {
t.Errorf("AddInvVect: %v", err)
}
if msg.InvList[0] != iv {
t.Errorf("AddInvVect: wrong invvect added - got %v, want %v",
spew.Sprint(msg.InvList[0]), spew.Sprint(iv))
}
// Ensure adding more than the max allowed inventory vectors per
// message returns an error.
for i := 0; i < wire.MaxInvPerMsg; i++ {
err = msg.AddInvVect(iv)
}
if err == nil {
t.Errorf("AddInvVect: expected error on too many inventory " +
"vectors not received")
}
// Ensure creating the message with a size hint larger than the max
// works as expected.
msg = wire.NewMsgGetDataSizeHint(wire.MaxInvPerMsg + 1)
wantCap := wire.MaxInvPerMsg
if cap(msg.InvList) != wantCap {
t.Errorf("NewMsgGetDataSizeHint: wrong cap for size hint - "+
"got %v, want %v", cap(msg.InvList), wantCap)
}
return
}
// TestMessage tests the Read/WriteMessage and Read/WriteMessageN API.
func TestMessage(t *testing.T) {
pver := wire.ProtocolVersion
// Create the various types of messages to test.
// MsgVersion.
addrYou := &net.TCPAddr{IP: net.ParseIP("192.168.0.1"), Port: 8333}
you, err := wire.NewNetAddress(addrYou, wire.SFNodeNetwork)
if err != nil {
t.Errorf("NewNetAddress: %v", err)
}
you.Timestamp = time.Time{} // Version message has zero value timestamp.
addrMe := &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 8333}
me, err := wire.NewNetAddress(addrMe, wire.SFNodeNetwork)
if err != nil {
t.Errorf("NewNetAddress: %v", err)
}
me.Timestamp = time.Time{} // Version message has zero value timestamp.
msgVersion := wire.NewMsgVersion(me, you, 123123, 0)
msgVerack := wire.NewMsgVerAck()
msgGetAddr := wire.NewMsgGetAddr()
msgAddr := wire.NewMsgAddr()
msgGetBlocks := wire.NewMsgGetBlocks(&wire.ShaHash{})
msgBlock := &blockOne
msgInv := wire.NewMsgInv()
msgGetData := wire.NewMsgGetData()
msgNotFound := wire.NewMsgNotFound()
msgTx := wire.NewMsgTx()
msgPing := wire.NewMsgPing(123123)
msgPong := wire.NewMsgPong(123123)
msgGetHeaders := wire.NewMsgGetHeaders()
msgHeaders := wire.NewMsgHeaders()
msgAlert := wire.NewMsgAlert([]byte("payload"), []byte("signature"))
msgMemPool := wire.NewMsgMemPool()
msgFilterAdd := wire.NewMsgFilterAdd([]byte{0x01})
msgFilterClear := wire.NewMsgFilterClear()
msgFilterLoad := wire.NewMsgFilterLoad([]byte{0x01}, 10, 0, wire.BloomUpdateNone)
bh := wire.NewBlockHeader(&wire.ShaHash{}, &wire.ShaHash{}, 0, 0)
msgMerkleBlock := wire.NewMsgMerkleBlock(bh)
msgReject := wire.NewMsgReject("block", wire.RejectDuplicate, "duplicate block")
tests := []struct {
in wire.Message // Value to encode
out wire.Message // Expected decoded value
pver uint32 // Protocol version for wire encoding
btcnet wire.BitcoinNet // Network to use for wire encoding
bytes int // Expected num bytes read/written
}{
{msgVersion, msgVersion, pver, wire.MainNet, 125},
{msgVerack, msgVerack, pver, wire.MainNet, 24},
{msgGetAddr, msgGetAddr, pver, wire.MainNet, 24},
{msgAddr, msgAddr, pver, wire.MainNet, 25},
{msgGetBlocks, msgGetBlocks, pver, wire.MainNet, 61},
{msgBlock, msgBlock, pver, wire.MainNet, 239},
{msgInv, msgInv, pver, wire.MainNet, 25},
{msgGetData, msgGetData, pver, wire.MainNet, 25},
{msgNotFound, msgNotFound, pver, wire.MainNet, 25},
{msgTx, msgTx, pver, wire.MainNet, 34},
{msgPing, msgPing, pver, wire.MainNet, 32},
{msgPong, msgPong, pver, wire.MainNet, 32},
{msgGetHeaders, msgGetHeaders, pver, wire.MainNet, 61},
{msgHeaders, msgHeaders, pver, wire.MainNet, 25},
{msgAlert, msgAlert, pver, wire.MainNet, 42},
{msgMemPool, msgMemPool, pver, wire.MainNet, 24},
{msgFilterAdd, msgFilterAdd, pver, wire.MainNet, 26},
{msgFilterClear, msgFilterClear, pver, wire.MainNet, 24},
{msgFilterLoad, msgFilterLoad, pver, wire.MainNet, 35},
{msgMerkleBlock, msgMerkleBlock, pver, wire.MainNet, 110},
{msgReject, msgReject, pver, wire.MainNet, 79},
}
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
// Encode to wire format.
var buf bytes.Buffer
nw, err := wire.WriteMessageN(&buf, test.in, test.pver, test.btcnet)
if err != nil {
t.Errorf("WriteMessage #%d error %v", i, err)
continue
}
// Ensure the number of bytes written match the expected value.
if nw != test.bytes {
t.Errorf("WriteMessage #%d unexpected num bytes "+
"written - got %d, want %d", i, nw, test.bytes)
}
// Decode from wire format.
rbuf := bytes.NewReader(buf.Bytes())
nr, msg, _, err := wire.ReadMessageN(rbuf, test.pver, test.btcnet)
if err != nil {
t.Errorf("ReadMessage #%d error %v, msg %v", i, err,
spew.Sdump(msg))
continue
}
if !reflect.DeepEqual(msg, test.out) {
t.Errorf("ReadMessage #%d\n got: %v want: %v", i,
spew.Sdump(msg), spew.Sdump(test.out))
continue
}
// Ensure the number of bytes read match the expected value.
if nr != test.bytes {
t.Errorf("ReadMessage #%d unexpected num bytes read - "+
"got %d, want %d", i, nr, test.bytes)
}
}
// Do the same thing for Read/WriteMessage, but ignore the bytes since
// they don't return them.
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
// Encode to wire format.
var buf bytes.Buffer
err := wire.WriteMessage(&buf, test.in, test.pver, test.btcnet)
if err != nil {
t.Errorf("WriteMessage #%d error %v", i, err)
continue
}
// Decode from wire format.
rbuf := bytes.NewReader(buf.Bytes())
msg, _, err := wire.ReadMessage(rbuf, test.pver, test.btcnet)
if err != nil {
t.Errorf("ReadMessage #%d error %v, msg %v", i, err,
spew.Sdump(msg))
continue
}
if !reflect.DeepEqual(msg, test.out) {
t.Errorf("ReadMessage #%d\n got: %v want: %v", i,
spew.Sdump(msg), spew.Sdump(test.out))
continue
}
}
}
// TestGetDataWire tests the MsgGetData wire encode and decode for various
// numbers of inventory vectors and protocol versions.
func TestGetDataWire(t *testing.T) {
// Block 203707 hash.
hashStr := "3264bc2ac36a60840790ba1d475d01367e7c723da941069e9dc"
blockHash, err := wire.NewShaHashFromStr(hashStr)
if err != nil {
t.Errorf("NewShaHashFromStr: %v", err)
}
// Transation 1 of Block 203707 hash.
hashStr = "d28a3dc7392bf00a9855ee93dd9a81eff82a2c4fe57fbd42cfe71b487accfaf0"
txHash, err := wire.NewShaHashFromStr(hashStr)
if err != nil {
t.Errorf("NewShaHashFromStr: %v", err)
}
iv := wire.NewInvVect(wire.InvTypeBlock, blockHash)
iv2 := wire.NewInvVect(wire.InvTypeTx, txHash)
// Empty MsgGetData message.
NoInv := wire.NewMsgGetData()
NoInvEncoded := []byte{
0x00, // Varint for number of inventory vectors
}
// MsgGetData message with multiple inventory vectors.
MultiInv := wire.NewMsgGetData()
MultiInv.AddInvVect(iv)
MultiInv.AddInvVect(iv2)
MultiInvEncoded := []byte{
0x02, // Varint for number of inv vectors
0x02, 0x00, 0x00, 0x00, // InvTypeBlock
0xdc, 0xe9, 0x69, 0x10, 0x94, 0xda, 0x23, 0xc7,
0xe7, 0x67, 0x13, 0xd0, 0x75, 0xd4, 0xa1, 0x0b,
0x79, 0x40, 0x08, 0xa6, 0x36, 0xac, 0xc2, 0x4b,
0x26, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Block 203707 hash
0x01, 0x00, 0x00, 0x00, // InvTypeTx
0xf0, 0xfa, 0xcc, 0x7a, 0x48, 0x1b, 0xe7, 0xcf,
0x42, 0xbd, 0x7f, 0xe5, 0x4f, 0x2c, 0x2a, 0xf8,
0xef, 0x81, 0x9a, 0xdd, 0x93, 0xee, 0x55, 0x98,
0x0a, 0xf0, 0x2b, 0x39, 0xc7, 0x3d, 0x8a, 0xd2, // Tx 1 of block 203707 hash
}
tests := []struct {
in *wire.MsgGetData // Message to encode
out *wire.MsgGetData // Expected decoded message
buf []byte // Wire encoding
pver uint32 // Protocol version for wire encoding
}{
// Latest protocol version with no inv vectors.
{
NoInv,
NoInv,
NoInvEncoded,
wire.ProtocolVersion,
},
// Latest protocol version with multiple inv vectors.
{
MultiInv,
MultiInv,
MultiInvEncoded,
wire.ProtocolVersion,
},
// Protocol version BIP0035Version no inv vectors.
{
NoInv,
NoInv,
NoInvEncoded,
wire.BIP0035Version,
},
// Protocol version BIP0035Version with multiple inv vectors.
{
MultiInv,
MultiInv,
MultiInvEncoded,
wire.BIP0035Version,
},
// Protocol version BIP0031Version no inv vectors.
{
NoInv,
NoInv,
NoInvEncoded,
wire.BIP0031Version,
},
// Protocol version BIP0031Version with multiple inv vectors.
{
MultiInv,
MultiInv,
MultiInvEncoded,
wire.BIP0031Version,
},
// Protocol version NetAddressTimeVersion no inv vectors.
{
NoInv,
NoInv,
NoInvEncoded,
wire.NetAddressTimeVersion,
},
// Protocol version NetAddressTimeVersion with multiple inv vectors.
{
MultiInv,
MultiInv,
MultiInvEncoded,
wire.NetAddressTimeVersion,
},
// Protocol version MultipleAddressVersion no inv vectors.
{
NoInv,
NoInv,
NoInvEncoded,
wire.MultipleAddressVersion,
},
// Protocol version MultipleAddressVersion with multiple inv vectors.
{
MultiInv,
MultiInv,
MultiInvEncoded,
wire.MultipleAddressVersion,
},
}
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
// Encode the message to wire format.
var buf bytes.Buffer
err := test.in.BtcEncode(&buf, test.pver)
if err != nil {
t.Errorf("BtcEncode #%d error %v", i, err)
continue
}
if !bytes.Equal(buf.Bytes(), test.buf) {
t.Errorf("BtcEncode #%d\n got: %s want: %s", i,
spew.Sdump(buf.Bytes()), spew.Sdump(test.buf))
continue
}
// Decode the message from wire format.
var msg wire.MsgGetData
rbuf := bytes.NewReader(test.buf)
err = msg.BtcDecode(rbuf, test.pver)
if err != nil {
t.Errorf("BtcDecode #%d error %v", i, err)
continue
}
if !reflect.DeepEqual(&msg, test.out) {
t.Errorf("BtcDecode #%d\n got: %s want: %s", i,
spew.Sdump(msg), spew.Sdump(test.out))
continue
}
}
}
// TestGetDataWireErrors performs negative tests against wire encode and decode
// of MsgGetData to confirm error paths work correctly.
func TestGetDataWireErrors(t *testing.T) {
pver := wire.ProtocolVersion
wireErr := &wire.MessageError{}
// Block 203707 hash.
hashStr := "3264bc2ac36a60840790ba1d475d01367e7c723da941069e9dc"
blockHash, err := wire.NewShaHashFromStr(hashStr)
if err != nil {
t.Errorf("NewShaHashFromStr: %v", err)
}
iv := wire.NewInvVect(wire.InvTypeBlock, blockHash)
// Base message used to induce errors.
baseGetData := wire.NewMsgGetData()
baseGetData.AddInvVect(iv)
baseGetDataEncoded := []byte{
0x02, // Varint for number of inv vectors
0x02, 0x00, 0x00, 0x00, // InvTypeBlock
0xdc, 0xe9, 0x69, 0x10, 0x94, 0xda, 0x23, 0xc7,
0xe7, 0x67, 0x13, 0xd0, 0x75, 0xd4, 0xa1, 0x0b,
0x79, 0x40, 0x08, 0xa6, 0x36, 0xac, 0xc2, 0x4b,
0x26, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Block 203707 hash
}
// Message that forces an error by having more than the max allowed inv
// vectors.
maxGetData := wire.NewMsgGetData()
for i := 0; i < wire.MaxInvPerMsg; i++ {
maxGetData.AddInvVect(iv)
}
maxGetData.InvList = append(maxGetData.InvList, iv)
maxGetDataEncoded := []byte{
0xfd, 0x51, 0xc3, // Varint for number of inv vectors (50001)
}
tests := []struct {
in *wire.MsgGetData // Value to encode
buf []byte // Wire encoding
pver uint32 // Protocol version for wire encoding
max int // Max size of fixed buffer to induce errors
writeErr error // Expected write error
readErr error // Expected read error
}{
// Latest protocol version with intentional read/write errors.
// Force error in inventory vector count
{baseGetData, baseGetDataEncoded, pver, 0, io.ErrShortWrite, io.EOF},
// Force error in inventory list.
{baseGetData, baseGetDataEncoded, pver, 1, io.ErrShortWrite, io.EOF},
// Force error with greater than max inventory vectors.
{maxGetData, maxGetDataEncoded, pver, 3, wireErr, wireErr},
}
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
// Encode to wire format.
w := newFixedWriter(test.max)
err := test.in.BtcEncode(w, test.pver)
if reflect.TypeOf(err) != reflect.TypeOf(test.writeErr) {
t.Errorf("BtcEncode #%d wrong error got: %v, want: %v",
i, err, test.writeErr)
continue
}
// For errors which are not of type wire.MessageError, check
// them for equality.
if _, ok := err.(*wire.MessageError); !ok {
if err != test.writeErr {
t.Errorf("BtcEncode #%d wrong error got: %v, "+
"want: %v", i, err, test.writeErr)
continue
}
}
// Decode from wire format.
var msg wire.MsgGetData
r := newFixedReader(test.max, test.buf)
err = msg.BtcDecode(r, test.pver)
if reflect.TypeOf(err) != reflect.TypeOf(test.readErr) {
t.Errorf("BtcDecode #%d wrong error got: %v, want: %v",
i, err, test.readErr)
continue
}
// For errors which are not of type wire.MessageError, check
// them for equality.
if _, ok := err.(*wire.MessageError); !ok {
if err != test.readErr {
t.Errorf("BtcDecode #%d wrong error got: %v, "+
"want: %v", i, err, test.readErr)
continue
}
}
}
}