neo-go/pkg/network/message_test.go

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2018-01-26 18:04:13 +00:00
package network
import (
"errors"
"math/rand"
"testing"
"time"
"github.com/nspcc-dev/neo-go/internal/random"
"github.com/nspcc-dev/neo-go/internal/testserdes"
"github.com/nspcc-dev/neo-go/pkg/config/netmode"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/network/capability"
"github.com/nspcc-dev/neo-go/pkg/network/payload"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/stretchr/testify/require"
)
func TestEncodeDecodeVersion(t *testing.T) {
// message with tiny payload, shouldn't be compressed
expected := NewMessage(CMDVersion, &payload.Version{
Magic: 1,
Version: 2,
Timestamp: uint32(time.Now().UnixNano()),
Nonce: 987,
UserAgent: []byte{1, 2, 3},
Capabilities: capability.Capabilities{
{
Type: capability.FullNode,
Data: &capability.Node{
StartHeight: 123,
},
},
},
})
testserdes.EncodeDecode(t, expected, &Message{})
uncompressed, err := testserdes.EncodeBinary(expected.Payload)
require.NoError(t, err)
require.Equal(t, len(expected.compressedPayload), len(uncompressed))
// large payload should be compressed
largeArray := make([]byte, CompressionMinSize)
for i := range largeArray {
largeArray[i] = byte(i)
}
expected.Payload.(*payload.Version).UserAgent = largeArray
testserdes.EncodeDecode(t, expected, &Message{})
uncompressed, err = testserdes.EncodeBinary(expected.Payload)
require.NoError(t, err)
require.NotEqual(t, len(expected.compressedPayload), len(uncompressed))
}
func TestEncodeDecodeHeaders(t *testing.T) {
// shouldn't try to compress headers payload
headers := &payload.Headers{Hdrs: make([]*block.Header, CompressionMinSize)}
for i := range headers.Hdrs {
h := &block.Header{
Base: block.Base{
Index: uint32(i + 1),
Script: transaction.Witness{
InvocationScript: []byte{0x0},
VerificationScript: []byte{0x1},
},
},
}
h.Hash()
headers.Hdrs[i] = h
}
expected := NewMessage(CMDHeaders, headers)
testserdes.EncodeDecode(t, expected, &Message{})
uncompressed, err := testserdes.EncodeBinary(expected.Payload)
require.NoError(t, err)
require.Equal(t, len(expected.compressedPayload), len(uncompressed))
}
func TestEncodeDecodeGetAddr(t *testing.T) {
// NullPayload should be handled properly
testEncodeDecode(t, CMDGetAddr, payload.NewNullPayload())
}
func TestEncodeDecodeNil(t *testing.T) {
// nil payload should be decoded into NullPayload
expected := NewMessage(CMDGetAddr, nil)
encoded, err := testserdes.Encode(expected)
require.NoError(t, err)
decoded := &Message{}
err = testserdes.Decode(encoded, decoded)
require.NoError(t, err)
require.Equal(t, NewMessage(CMDGetAddr, payload.NewNullPayload()), decoded)
}
func TestEncodeDecodePing(t *testing.T) {
testEncodeDecode(t, CMDPing, payload.NewPing(123, 456))
}
func TestEncodeDecodeInventory(t *testing.T) {
testEncodeDecode(t, CMDInv, payload.NewInventory(payload.ConsensusType, []util.Uint256{{1, 2, 3}}))
}
func TestEncodeDecodeAddr(t *testing.T) {
const count = 3
p := payload.NewAddressList(count)
p.Addrs[0] = &payload.AddressAndTime{
Timestamp: rand.Uint32(),
Capabilities: capability.Capabilities{{
Type: capability.FullNode,
Data: &capability.Node{StartHeight: rand.Uint32()},
}},
}
p.Addrs[1] = &payload.AddressAndTime{
Timestamp: rand.Uint32(),
Capabilities: capability.Capabilities{{
Type: capability.TCPServer,
Data: &capability.Server{Port: uint16(rand.Uint32())},
}},
}
p.Addrs[2] = &payload.AddressAndTime{
Timestamp: rand.Uint32(),
Capabilities: capability.Capabilities{{
Type: capability.WSServer,
Data: &capability.Server{Port: uint16(rand.Uint32())},
}},
}
testEncodeDecode(t, CMDAddr, p)
}
func TestEncodeDecodeBlock(t *testing.T) {
t.Run("good", func(t *testing.T) {
testEncodeDecode(t, CMDBlock, newDummyBlock(12, 1))
})
t.Run("invalid state root enabled setting", func(t *testing.T) {
expected := NewMessage(CMDBlock, newDummyBlock(31, 1))
expected.Network = netmode.UnitTestNet
data, err := testserdes.Encode(expected)
require.NoError(t, err)
require.Error(t, testserdes.Decode(data, &Message{Network: netmode.UnitTestNet, StateRootInHeader: true}))
})
}
func TestEncodeDecodeGetBlock(t *testing.T) {
t.Run("good, Count>0", func(t *testing.T) {
testEncodeDecode(t, CMDGetBlocks, &payload.GetBlocks{
HashStart: random.Uint256(),
Count: int16(rand.Uint32() >> 17),
})
})
t.Run("good, Count=-1", func(t *testing.T) {
testEncodeDecode(t, CMDGetBlocks, &payload.GetBlocks{
HashStart: random.Uint256(),
Count: -1,
})
})
t.Run("bad, Count=-2", func(t *testing.T) {
testEncodeDecodeFail(t, CMDGetBlocks, &payload.GetBlocks{
HashStart: random.Uint256(),
Count: -2,
})
})
}
func TestEnodeDecodeGetHeaders(t *testing.T) {
testEncodeDecode(t, CMDGetHeaders, &payload.GetBlockByIndex{
IndexStart: rand.Uint32(),
Count: payload.MaxHeadersAllowed,
})
}
func TestEncodeDecodeGetBlockByIndex(t *testing.T) {
t.Run("good, Count>0", func(t *testing.T) {
testEncodeDecode(t, CMDGetBlockByIndex, &payload.GetBlockByIndex{
IndexStart: rand.Uint32(),
Count: payload.MaxHeadersAllowed,
})
})
t.Run("bad, Count too big", func(t *testing.T) {
testEncodeDecodeFail(t, CMDGetBlockByIndex, &payload.GetBlockByIndex{
IndexStart: rand.Uint32(),
Count: payload.MaxHeadersAllowed + 1,
})
})
t.Run("good, Count=-1", func(t *testing.T) {
testEncodeDecode(t, CMDGetBlockByIndex, &payload.GetBlockByIndex{
IndexStart: rand.Uint32(),
Count: -1,
})
})
t.Run("bad, Count=-2", func(t *testing.T) {
testEncodeDecodeFail(t, CMDGetBlockByIndex, &payload.GetBlockByIndex{
IndexStart: rand.Uint32(),
Count: -2,
})
})
}
func TestEncodeDecodeTransaction(t *testing.T) {
testEncodeDecode(t, CMDTX, newDummyTx())
}
func TestEncodeDecodeMerkleBlock(t *testing.T) {
base := &block.Base{
PrevHash: random.Uint256(),
Timestamp: rand.Uint64(),
Script: transaction.Witness{
InvocationScript: random.Bytes(10),
VerificationScript: random.Bytes(11),
},
Network: netmode.UnitTestNet,
}
base.Hash()
t.Run("good", func(t *testing.T) {
testEncodeDecode(t, CMDMerkleBlock, &payload.MerkleBlock{
Network: netmode.UnitTestNet,
Base: base,
TxCount: 1,
Hashes: []util.Uint256{random.Uint256()},
Flags: []byte{0},
})
})
t.Run("bad, invalid TxCount", func(t *testing.T) {
testEncodeDecodeFail(t, CMDMerkleBlock, &payload.MerkleBlock{
Base: base,
TxCount: 2,
Hashes: []util.Uint256{random.Uint256()},
Flags: []byte{0},
})
})
}
func TestEncodeDecodeNotFound(t *testing.T) {
testEncodeDecode(t, CMDNotFound, &payload.Inventory{
Type: payload.TXType,
Hashes: []util.Uint256{random.Uint256()},
})
}
func TestInvalidMessages(t *testing.T) {
t.Run("CMDBlock, empty payload", func(t *testing.T) {
testEncodeDecodeFail(t, CMDBlock, payload.NullPayload{})
})
t.Run("send decompressed with flag", func(t *testing.T) {
m := NewMessage(CMDTX, newDummyTx())
data, err := testserdes.Encode(m)
require.NoError(t, err)
require.True(t, m.Flags&Compressed == 0)
data[0] |= byte(Compressed)
require.Error(t, testserdes.Decode(data, &Message{Network: netmode.UnitTestNet}))
})
t.Run("invalid command", func(t *testing.T) {
testEncodeDecodeFail(t, CommandType(0xFF), &payload.Version{Magic: netmode.UnitTestNet})
})
t.Run("very big payload size", func(t *testing.T) {
m := NewMessage(CMDBlock, nil)
w := io.NewBufBinWriter()
w.WriteB(byte(m.Flags))
w.WriteB(byte(m.Command))
w.WriteVarBytes(make([]byte, payload.MaxSize+1))
require.NoError(t, w.Err)
require.Error(t, testserdes.Decode(w.Bytes(), &Message{Network: netmode.UnitTestNet}))
})
t.Run("fail to encode message if payload can't be serialized", func(t *testing.T) {
m := NewMessage(CMDBlock, failSer(true))
_, err := m.Bytes()
require.Error(t, err)
// good otherwise
m = NewMessage(CMDBlock, failSer(false))
_, err = m.Bytes()
require.NoError(t, err)
})
t.Run("trimmed payload", func(t *testing.T) {
m := NewMessage(CMDBlock, newDummyBlock(1, 0))
data, err := testserdes.Encode(m)
require.NoError(t, err)
data = data[:len(data)-1]
require.Error(t, testserdes.Decode(data, &Message{Network: netmode.UnitTestNet}))
})
}
type failSer bool
func (f failSer) EncodeBinary(r *io.BinWriter) {
if f {
r.Err = errors.New("unserializable payload")
}
}
func (failSer) DecodeBinary(w *io.BinReader) {}
func newDummyBlock(height uint32, txCount int) *block.Block {
b := block.New(netmode.UnitTestNet, false)
b.Index = height
b.PrevHash = random.Uint256()
b.Timestamp = rand.Uint64()
b.Script.InvocationScript = random.Bytes(2)
b.Script.VerificationScript = random.Bytes(3)
b.Transactions = make([]*transaction.Transaction, txCount)
for i := range b.Transactions {
b.Transactions[i] = newDummyTx()
}
b.Hash()
return b
}
func newDummyTx() *transaction.Transaction {
tx := transaction.New(netmode.UnitTestNet, random.Bytes(100), 123)
tx.Signers = []transaction.Signer{{Account: random.Uint160()}}
tx.Size()
tx.Hash()
return tx
}
func testEncodeDecode(t *testing.T, cmd CommandType, p payload.Payload) *Message {
expected := NewMessage(cmd, p)
expected.Network = netmode.UnitTestNet
actual := &Message{Network: netmode.UnitTestNet}
testserdes.EncodeDecode(t, expected, actual)
return actual
}
func testEncodeDecodeFail(t *testing.T, cmd CommandType, p payload.Payload) *Message {
expected := NewMessage(cmd, p)
expected.Network = netmode.UnitTestNet
data, err := testserdes.Encode(expected)
require.NoError(t, err)
actual := &Message{Network: netmode.UnitTestNet}
require.Error(t, testserdes.Decode(data, actual))
return actual
}