8a80f0683a
An output is considered dust if the cost to the network to spend the
coins is more than 1/3 of the minimum free transaction relay fee, which
has a default rate of 1000 satoshis/kb
bitcoind refactored dust threshold calculation, which removed the
multiply factor of 3 from the code, but increased the DUST_RELAY_TX_FEE
from 1000 to 3000 (satoshi/kb).
lbrycrd adopted the refactored code but also kept the rate to
1000 dewies/kB, which means:
An output is considered dust if the cost to the network to spend the
coins is more than the minimum free transaction relay fee.
512 lines
12 KiB
Go
512 lines
12 KiB
Go
// Copyright (c) 2013-2016 The btcsuite developers
|
|
// Use of this source code is governed by an ISC
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package mempool
|
|
|
|
import (
|
|
"bytes"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/lbryio/lbcd/btcec"
|
|
"github.com/lbryio/lbcd/chaincfg"
|
|
"github.com/lbryio/lbcd/chaincfg/chainhash"
|
|
"github.com/lbryio/lbcd/txscript"
|
|
"github.com/lbryio/lbcd/wire"
|
|
btcutil "github.com/lbryio/lbcutil"
|
|
)
|
|
|
|
// TestCalcMinRequiredTxRelayFee tests the calcMinRequiredTxRelayFee API.
|
|
func TestCalcMinRequiredTxRelayFee(t *testing.T) {
|
|
tests := []struct {
|
|
name string // test description.
|
|
size int64 // Transaction size in bytes.
|
|
relayFee btcutil.Amount // minimum relay transaction fee.
|
|
want int64 // Expected fee.
|
|
}{
|
|
{
|
|
// Ensure combination of size and fee that are less than 1000
|
|
// produce a non-zero fee.
|
|
"250 bytes with relay fee of 3",
|
|
250,
|
|
3,
|
|
3,
|
|
},
|
|
{
|
|
"100 bytes with default minimum relay fee",
|
|
100,
|
|
DefaultMinRelayTxFee,
|
|
100,
|
|
},
|
|
{
|
|
"max standard tx size with default minimum relay fee",
|
|
maxStandardTxWeight / 4,
|
|
DefaultMinRelayTxFee,
|
|
100000,
|
|
},
|
|
{
|
|
"max standard tx size with max satoshi relay fee",
|
|
maxStandardTxWeight / 4,
|
|
btcutil.MaxSatoshi / 100, // overflow on purpose
|
|
btcutil.MaxSatoshi,
|
|
},
|
|
{
|
|
"1500 bytes with 5000 relay fee",
|
|
1500,
|
|
5000,
|
|
7500,
|
|
},
|
|
{
|
|
"1500 bytes with 3000 relay fee",
|
|
1500,
|
|
3000,
|
|
4500,
|
|
},
|
|
{
|
|
"782 bytes with 5000 relay fee",
|
|
782,
|
|
5000,
|
|
3910,
|
|
},
|
|
{
|
|
"782 bytes with 3000 relay fee",
|
|
782,
|
|
3000,
|
|
2346,
|
|
},
|
|
{
|
|
"782 bytes with 2550 relay fee",
|
|
782,
|
|
2550,
|
|
1994,
|
|
},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
got := calcMinRequiredTxRelayFee(test.size, test.relayFee)
|
|
if got != test.want {
|
|
t.Errorf("TestCalcMinRequiredTxRelayFee test '%s' "+
|
|
"failed: got %v want %v", test.name, got,
|
|
test.want)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestCheckPkScriptStandard tests the checkPkScriptStandard API.
|
|
func TestCheckPkScriptStandard(t *testing.T) {
|
|
var pubKeys [][]byte
|
|
for i := 0; i < 4; i++ {
|
|
pk, err := btcec.NewPrivateKey(btcec.S256())
|
|
if err != nil {
|
|
t.Fatalf("TestCheckPkScriptStandard NewPrivateKey failed: %v",
|
|
err)
|
|
return
|
|
}
|
|
pubKeys = append(pubKeys, pk.PubKey().SerializeCompressed())
|
|
}
|
|
|
|
tests := []struct {
|
|
name string // test description.
|
|
script *txscript.ScriptBuilder
|
|
isStandard bool
|
|
}{
|
|
{
|
|
"key1 and key2",
|
|
txscript.NewScriptBuilder().AddOp(txscript.OP_2).
|
|
AddData(pubKeys[0]).AddData(pubKeys[1]).
|
|
AddOp(txscript.OP_2).AddOp(txscript.OP_CHECKMULTISIG),
|
|
true,
|
|
},
|
|
{
|
|
"key1 or key2",
|
|
txscript.NewScriptBuilder().AddOp(txscript.OP_1).
|
|
AddData(pubKeys[0]).AddData(pubKeys[1]).
|
|
AddOp(txscript.OP_2).AddOp(txscript.OP_CHECKMULTISIG),
|
|
true,
|
|
},
|
|
{
|
|
"escrow",
|
|
txscript.NewScriptBuilder().AddOp(txscript.OP_2).
|
|
AddData(pubKeys[0]).AddData(pubKeys[1]).
|
|
AddData(pubKeys[2]).
|
|
AddOp(txscript.OP_3).AddOp(txscript.OP_CHECKMULTISIG),
|
|
true,
|
|
},
|
|
{
|
|
"one of four",
|
|
txscript.NewScriptBuilder().AddOp(txscript.OP_1).
|
|
AddData(pubKeys[0]).AddData(pubKeys[1]).
|
|
AddData(pubKeys[2]).AddData(pubKeys[3]).
|
|
AddOp(txscript.OP_4).AddOp(txscript.OP_CHECKMULTISIG),
|
|
false,
|
|
},
|
|
{
|
|
"malformed1",
|
|
txscript.NewScriptBuilder().AddOp(txscript.OP_3).
|
|
AddData(pubKeys[0]).AddData(pubKeys[1]).
|
|
AddOp(txscript.OP_2).AddOp(txscript.OP_CHECKMULTISIG),
|
|
false,
|
|
},
|
|
{
|
|
"malformed2",
|
|
txscript.NewScriptBuilder().AddOp(txscript.OP_2).
|
|
AddData(pubKeys[0]).AddData(pubKeys[1]).
|
|
AddOp(txscript.OP_3).AddOp(txscript.OP_CHECKMULTISIG),
|
|
false,
|
|
},
|
|
{
|
|
"malformed3",
|
|
txscript.NewScriptBuilder().AddOp(txscript.OP_0).
|
|
AddData(pubKeys[0]).AddData(pubKeys[1]).
|
|
AddOp(txscript.OP_2).AddOp(txscript.OP_CHECKMULTISIG),
|
|
false,
|
|
},
|
|
{
|
|
"malformed4",
|
|
txscript.NewScriptBuilder().AddOp(txscript.OP_1).
|
|
AddData(pubKeys[0]).AddData(pubKeys[1]).
|
|
AddOp(txscript.OP_0).AddOp(txscript.OP_CHECKMULTISIG),
|
|
false,
|
|
},
|
|
{
|
|
"malformed5",
|
|
txscript.NewScriptBuilder().AddOp(txscript.OP_1).
|
|
AddData(pubKeys[0]).AddData(pubKeys[1]).
|
|
AddOp(txscript.OP_CHECKMULTISIG),
|
|
false,
|
|
},
|
|
{
|
|
"malformed6",
|
|
txscript.NewScriptBuilder().AddOp(txscript.OP_1).
|
|
AddData(pubKeys[0]).AddData(pubKeys[1]),
|
|
false,
|
|
},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
script, err := test.script.Script()
|
|
if err != nil {
|
|
t.Fatalf("TestCheckPkScriptStandard test '%s' "+
|
|
"failed: %v", test.name, err)
|
|
continue
|
|
}
|
|
scriptClass := txscript.GetScriptClass(script)
|
|
got := checkPkScriptStandard(script, scriptClass)
|
|
if (test.isStandard && got != nil) ||
|
|
(!test.isStandard && got == nil) {
|
|
|
|
t.Fatalf("TestCheckPkScriptStandard test '%s' failed",
|
|
test.name)
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestDust tests the IsDust API.
|
|
func TestDust(t *testing.T) {
|
|
pkScript := []byte{0x76, 0xa9, 0x21, 0x03, 0x2f, 0x7e, 0x43,
|
|
0x0a, 0xa4, 0xc9, 0xd1, 0x59, 0x43, 0x7e, 0x84, 0xb9,
|
|
0x75, 0xdc, 0x76, 0xd9, 0x00, 0x3b, 0xf0, 0x92, 0x2c,
|
|
0xf3, 0xaa, 0x45, 0x28, 0x46, 0x4b, 0xab, 0x78, 0x0d,
|
|
0xba, 0x5e, 0x88, 0xac}
|
|
|
|
tests := []struct {
|
|
name string // test description
|
|
txOut wire.TxOut
|
|
relayFee btcutil.Amount // minimum relay transaction fee.
|
|
isDust bool
|
|
}{
|
|
{
|
|
// Any value is allowed with a zero relay fee.
|
|
"zero value with zero relay fee",
|
|
wire.TxOut{Value: 0, PkScript: pkScript},
|
|
0,
|
|
false,
|
|
},
|
|
{
|
|
// Zero value is dust with any relay fee"
|
|
"zero value with very small tx fee",
|
|
wire.TxOut{Value: 0, PkScript: pkScript},
|
|
1,
|
|
true,
|
|
},
|
|
{
|
|
"38 byte public key script with value 194",
|
|
wire.TxOut{Value: 194, PkScript: pkScript},
|
|
1000,
|
|
true,
|
|
},
|
|
{
|
|
"38 byte public key script with value 195",
|
|
wire.TxOut{Value: 195, PkScript: pkScript},
|
|
1000,
|
|
false,
|
|
},
|
|
{
|
|
// Maximum allowed value is never dust.
|
|
"max satoshi amount is never dust",
|
|
wire.TxOut{Value: btcutil.MaxSatoshi, PkScript: pkScript},
|
|
btcutil.MaxSatoshi,
|
|
false,
|
|
},
|
|
{
|
|
// Maximum int64 value causes overflow if we're not careful
|
|
"maximum int64 value",
|
|
wire.TxOut{Value: 1<<63 - 1, PkScript: pkScript},
|
|
1<<63 - 1,
|
|
false,
|
|
},
|
|
{
|
|
// Unspendable pkScript due to an invalid public key
|
|
// script.
|
|
"unspendable pkScript",
|
|
wire.TxOut{Value: 5000, PkScript: []byte{0x01}},
|
|
0, // no relay fee
|
|
true,
|
|
},
|
|
}
|
|
for _, test := range tests {
|
|
res := IsDust(&test.txOut, test.relayFee)
|
|
if res != test.isDust {
|
|
t.Fatalf("Dust test '%s' failed: want %v got %v",
|
|
test.name, test.isDust, res)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestCheckTransactionStandard tests the checkTransactionStandard API.
|
|
func TestCheckTransactionStandard(t *testing.T) {
|
|
// Create some dummy, but otherwise standard, data for transactions.
|
|
prevOutHash, err := chainhash.NewHashFromStr("01")
|
|
if err != nil {
|
|
t.Fatalf("NewShaHashFromStr: unexpected error: %v", err)
|
|
}
|
|
dummyPrevOut := wire.OutPoint{Hash: *prevOutHash, Index: 1}
|
|
dummySigScript := bytes.Repeat([]byte{0x00}, 65)
|
|
dummyTxIn := wire.TxIn{
|
|
PreviousOutPoint: dummyPrevOut,
|
|
SignatureScript: dummySigScript,
|
|
Sequence: wire.MaxTxInSequenceNum,
|
|
}
|
|
addrHash := [20]byte{0x01}
|
|
addr, err := btcutil.NewAddressPubKeyHash(addrHash[:],
|
|
&chaincfg.TestNet3Params)
|
|
if err != nil {
|
|
t.Fatalf("NewAddressPubKeyHash: unexpected error: %v", err)
|
|
}
|
|
dummyPkScript, err := txscript.PayToAddrScript(addr)
|
|
if err != nil {
|
|
t.Fatalf("PayToAddrScript: unexpected error: %v", err)
|
|
}
|
|
dummyTxOut := wire.TxOut{
|
|
Value: 100000000, // 1 BTC
|
|
PkScript: dummyPkScript,
|
|
}
|
|
|
|
tests := []struct {
|
|
name string
|
|
tx wire.MsgTx
|
|
height int32
|
|
isStandard bool
|
|
code wire.RejectCode
|
|
}{
|
|
{
|
|
name: "Typical pay-to-pubkey-hash transaction",
|
|
tx: wire.MsgTx{
|
|
Version: 1,
|
|
TxIn: []*wire.TxIn{&dummyTxIn},
|
|
TxOut: []*wire.TxOut{&dummyTxOut},
|
|
LockTime: 0,
|
|
},
|
|
height: 300000,
|
|
isStandard: true,
|
|
},
|
|
{
|
|
name: "Transaction version too high",
|
|
tx: wire.MsgTx{
|
|
Version: wire.TxVersion + 1,
|
|
TxIn: []*wire.TxIn{&dummyTxIn},
|
|
TxOut: []*wire.TxOut{&dummyTxOut},
|
|
LockTime: 0,
|
|
},
|
|
height: 300000,
|
|
isStandard: false,
|
|
code: wire.RejectNonstandard,
|
|
},
|
|
{
|
|
name: "Transaction is not finalized",
|
|
tx: wire.MsgTx{
|
|
Version: 1,
|
|
TxIn: []*wire.TxIn{{
|
|
PreviousOutPoint: dummyPrevOut,
|
|
SignatureScript: dummySigScript,
|
|
Sequence: 0,
|
|
}},
|
|
TxOut: []*wire.TxOut{&dummyTxOut},
|
|
LockTime: 300001,
|
|
},
|
|
height: 300000,
|
|
isStandard: false,
|
|
code: wire.RejectNonstandard,
|
|
},
|
|
{
|
|
name: "Transaction size is too large",
|
|
tx: wire.MsgTx{
|
|
Version: 1,
|
|
TxIn: []*wire.TxIn{&dummyTxIn},
|
|
TxOut: []*wire.TxOut{{
|
|
Value: 0,
|
|
PkScript: bytes.Repeat([]byte{0x00},
|
|
(maxStandardTxWeight/4)+1),
|
|
}},
|
|
LockTime: 0,
|
|
},
|
|
height: 300000,
|
|
isStandard: false,
|
|
code: wire.RejectNonstandard,
|
|
},
|
|
{
|
|
name: "Signature script size is too large",
|
|
tx: wire.MsgTx{
|
|
Version: 1,
|
|
TxIn: []*wire.TxIn{{
|
|
PreviousOutPoint: dummyPrevOut,
|
|
SignatureScript: bytes.Repeat([]byte{0x00},
|
|
maxStandardSigScriptSize+1),
|
|
Sequence: wire.MaxTxInSequenceNum,
|
|
}},
|
|
TxOut: []*wire.TxOut{&dummyTxOut},
|
|
LockTime: 0,
|
|
},
|
|
height: 300000,
|
|
isStandard: false,
|
|
code: wire.RejectNonstandard,
|
|
},
|
|
{
|
|
name: "Signature script that does more than push data",
|
|
tx: wire.MsgTx{
|
|
Version: 1,
|
|
TxIn: []*wire.TxIn{{
|
|
PreviousOutPoint: dummyPrevOut,
|
|
SignatureScript: []byte{
|
|
txscript.OP_CHECKSIGVERIFY},
|
|
Sequence: wire.MaxTxInSequenceNum,
|
|
}},
|
|
TxOut: []*wire.TxOut{&dummyTxOut},
|
|
LockTime: 0,
|
|
},
|
|
height: 300000,
|
|
isStandard: false,
|
|
code: wire.RejectNonstandard,
|
|
},
|
|
{
|
|
name: "Valid but non standard public key script",
|
|
tx: wire.MsgTx{
|
|
Version: 1,
|
|
TxIn: []*wire.TxIn{&dummyTxIn},
|
|
TxOut: []*wire.TxOut{{
|
|
Value: 100000000,
|
|
PkScript: []byte{txscript.OP_TRUE},
|
|
}},
|
|
LockTime: 0,
|
|
},
|
|
height: 300000,
|
|
isStandard: false,
|
|
code: wire.RejectNonstandard,
|
|
},
|
|
{
|
|
name: "More than one nulldata output",
|
|
tx: wire.MsgTx{
|
|
Version: 1,
|
|
TxIn: []*wire.TxIn{&dummyTxIn},
|
|
TxOut: []*wire.TxOut{{
|
|
Value: 0,
|
|
PkScript: []byte{txscript.OP_RETURN},
|
|
}, {
|
|
Value: 0,
|
|
PkScript: []byte{txscript.OP_RETURN},
|
|
}},
|
|
LockTime: 0,
|
|
},
|
|
height: 300000,
|
|
isStandard: false,
|
|
code: wire.RejectNonstandard,
|
|
},
|
|
{
|
|
name: "Dust output",
|
|
tx: wire.MsgTx{
|
|
Version: 1,
|
|
TxIn: []*wire.TxIn{&dummyTxIn},
|
|
TxOut: []*wire.TxOut{{
|
|
Value: 0,
|
|
PkScript: dummyPkScript,
|
|
}},
|
|
LockTime: 0,
|
|
},
|
|
height: 300000,
|
|
isStandard: false,
|
|
code: wire.RejectDust,
|
|
},
|
|
{
|
|
name: "One nulldata output with 0 amount (standard)",
|
|
tx: wire.MsgTx{
|
|
Version: 1,
|
|
TxIn: []*wire.TxIn{&dummyTxIn},
|
|
TxOut: []*wire.TxOut{{
|
|
Value: 0,
|
|
PkScript: []byte{txscript.OP_RETURN},
|
|
}},
|
|
LockTime: 0,
|
|
},
|
|
height: 300000,
|
|
isStandard: true,
|
|
},
|
|
}
|
|
|
|
pastMedianTime := time.Now()
|
|
for _, test := range tests {
|
|
// Ensure standardness is as expected.
|
|
err := checkTransactionStandard(btcutil.NewTx(&test.tx),
|
|
test.height, pastMedianTime, DefaultMinRelayTxFee, 1)
|
|
if err == nil && test.isStandard {
|
|
// Test passes since function returned standard for a
|
|
// transaction which is intended to be standard.
|
|
continue
|
|
}
|
|
if err == nil && !test.isStandard {
|
|
t.Errorf("checkTransactionStandard (%s): standard when "+
|
|
"it should not be", test.name)
|
|
continue
|
|
}
|
|
if err != nil && test.isStandard {
|
|
t.Errorf("checkTransactionStandard (%s): nonstandard "+
|
|
"when it should not be: %v", test.name, err)
|
|
continue
|
|
}
|
|
|
|
// Ensure error type is a TxRuleError inside of a RuleError.
|
|
rerr, ok := err.(RuleError)
|
|
if !ok {
|
|
t.Errorf("checkTransactionStandard (%s): unexpected "+
|
|
"error type - got %T", test.name, err)
|
|
continue
|
|
}
|
|
txrerr, ok := rerr.Err.(TxRuleError)
|
|
if !ok {
|
|
t.Errorf("checkTransactionStandard (%s): unexpected "+
|
|
"error type - got %T", test.name, rerr.Err)
|
|
continue
|
|
}
|
|
|
|
// Ensure the reject code is the expected one.
|
|
if txrerr.RejectCode != test.code {
|
|
t.Errorf("checkTransactionStandard (%s): unexpected "+
|
|
"error code - got %v, want %v", test.name,
|
|
txrerr.RejectCode, test.code)
|
|
continue
|
|
}
|
|
}
|
|
}
|