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Count sigops & use adjusted vsizes in mempool projections

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Mononaut 2023-05-29 15:56:29 -04:00
parent c5e6821ad4
commit 09e4e44e88
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9 changed files with 191 additions and 98 deletions
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13
backend/src/api/audit.ts
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@ -14,7 +14,6 @@ class Audit {
const matches: string[] = []; // present in both mined block and template const matches: string[] = []; // present in both mined block and template
const added: string[] = []; // present in mined block, not in template const added: string[] = []; // present in mined block, not in template
const fresh: string[] = []; // missing, but firstSeen within PROPAGATION_MARGIN const fresh: string[] = []; // missing, but firstSeen within PROPAGATION_MARGIN
const sigop: string[] = []; // missing, but possibly has an adjusted vsize due to high sigop count
const isCensored = {}; // missing, without excuse const isCensored = {}; // missing, without excuse
const isDisplaced = {}; const isDisplaced = {};
let displacedWeight = 0; let displacedWeight = 0;
@ -38,8 +37,6 @@ class Audit {
// tx is recent, may have reached the miner too late for inclusion // tx is recent, may have reached the miner too late for inclusion
if (mempool[txid]?.firstSeen != null && (now - (mempool[txid]?.firstSeen || 0)) <= PROPAGATION_MARGIN) { if (mempool[txid]?.firstSeen != null && (now - (mempool[txid]?.firstSeen || 0)) <= PROPAGATION_MARGIN) {
fresh.push(txid); fresh.push(txid);
} else if (this.isPossibleHighSigop(mempool[txid])) {
sigop.push(txid);
} else { } else {
isCensored[txid] = true; isCensored[txid] = true;
} }
@ -140,19 +137,11 @@ class Audit {
censored: Object.keys(isCensored), censored: Object.keys(isCensored),
added, added,
fresh, fresh,
sigop, sigop: [],
score, score,
similarity, similarity,
}; };
} }
// Detect transactions with a possibly adjusted vsize due to high sigop count
// very rough heuristic based on number of OP_CHECKMULTISIG outputs
// will miss cases with other sources of sigops
isPossibleHighSigop(tx: TransactionExtended): boolean {
const numBareMultisig = tx.vout.reduce((count, vout) => count + (vout.scriptpubkey_asm.includes('OP_CHECKMULTISIG') ? 1 : 0), 0);
return (numBareMultisig * 400) > tx.vsize;
}
} }
export default new Audit(); export default new Audit();

21
backend/src/api/blocks.ts
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@ -2,7 +2,7 @@ import config from '../config';
import bitcoinApi, { bitcoinCoreApi } from './bitcoin/bitcoin-api-factory'; import bitcoinApi, { bitcoinCoreApi } from './bitcoin/bitcoin-api-factory';
import logger from '../logger'; import logger from '../logger';
import memPool from './mempool'; import memPool from './mempool';
import { BlockExtended, BlockExtension, BlockSummary, PoolTag, TransactionExtended, TransactionStripped, TransactionMinerInfo, CpfpSummary } from '../mempool.interfaces'; import { BlockExtended, BlockExtension, BlockSummary, PoolTag, TransactionExtended, TransactionStripped, TransactionMinerInfo, CpfpSummary, MempoolTransactionExtended } from '../mempool.interfaces';
import { Common } from './common'; import { Common } from './common';
import diskCache from './disk-cache'; import diskCache from './disk-cache';
import transactionUtils from './transaction-utils'; import transactionUtils from './transaction-utils';
@ -76,6 +76,7 @@ class Blocks {
blockHeight: number, blockHeight: number,
onlyCoinbase: boolean, onlyCoinbase: boolean,
quiet: boolean = false, quiet: boolean = false,
addMempoolData: boolean = false,
): Promise<TransactionExtended[]> { ): Promise<TransactionExtended[]> {
const transactions: TransactionExtended[] = []; const transactions: TransactionExtended[] = [];
const txIds: string[] = await bitcoinApi.$getTxIdsForBlock(blockHash); const txIds: string[] = await bitcoinApi.$getTxIdsForBlock(blockHash);
@ -96,14 +97,14 @@ class Blocks {
logger.debug(`Indexing tx ${i + 1} of ${txIds.length} in block #${blockHeight}`); logger.debug(`Indexing tx ${i + 1} of ${txIds.length} in block #${blockHeight}`);
} }
try { try {
const tx = await transactionUtils.$getTransactionExtended(txIds[i]); const tx = await transactionUtils.$getTransactionExtended(txIds[i], false, false, false, addMempoolData);
transactions.push(tx); transactions.push(tx);
transactionsFetched++; transactionsFetched++;
} catch (e) { } catch (e) {
try { try {
if (config.MEMPOOL.BACKEND === 'esplora') { if (config.MEMPOOL.BACKEND === 'esplora') {
// Try again with core // Try again with core
const tx = await transactionUtils.$getTransactionExtended(txIds[i], false, false, true); const tx = await transactionUtils.$getTransactionExtended(txIds[i], false, false, true, addMempoolData);
transactions.push(tx); transactions.push(tx);
transactionsFetched++; transactionsFetched++;
} else { } else {
@ -126,11 +127,13 @@ class Blocks {
} }
} }
transactions.forEach((tx) => { if (addMempoolData) {
if (!tx.cpfpChecked) { transactions.forEach((tx) => {
Common.setRelativesAndGetCpfpInfo(tx, mempool); // Child Pay For Parent if (!tx.cpfpChecked) {
} Common.setRelativesAndGetCpfpInfo(tx as MempoolTransactionExtended, mempool); // Child Pay For Parent
}); }
});
}
if (!quiet) { if (!quiet) {
logger.debug(`${transactionsFound} of ${txIds.length} found in mempool. ${transactionsFetched} fetched through backend service.`); logger.debug(`${transactionsFound} of ${txIds.length} found in mempool. ${transactionsFetched} fetched through backend service.`);
@ -596,7 +599,7 @@ class Blocks {
const verboseBlock = await bitcoinClient.getBlock(blockHash, 2); const verboseBlock = await bitcoinClient.getBlock(blockHash, 2);
const block = BitcoinApi.convertBlock(verboseBlock); const block = BitcoinApi.convertBlock(verboseBlock);
const txIds: string[] = await bitcoinApi.$getTxIdsForBlock(blockHash); const txIds: string[] = await bitcoinApi.$getTxIdsForBlock(blockHash);
const transactions = await this.$getTransactionsExtended(blockHash, block.height, false); const transactions = await this.$getTransactionsExtended(blockHash, block.height, false, false, true);
const cpfpSummary: CpfpSummary = Common.calculateCpfp(block.height, transactions); const cpfpSummary: CpfpSummary = Common.calculateCpfp(block.height, transactions);
const blockExtended: BlockExtended = await this.$getBlockExtended(block, cpfpSummary.transactions); const blockExtended: BlockExtended = await this.$getBlockExtended(block, cpfpSummary.transactions);
const blockSummary: BlockSummary = this.summarizeBlock(verboseBlock); const blockSummary: BlockSummary = this.summarizeBlock(verboseBlock);

28
backend/src/api/common.ts
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@ -1,4 +1,4 @@
import { Ancestor, CpfpInfo, CpfpSummary, EffectiveFeeStats, MempoolBlockWithTransactions, TransactionExtended, TransactionStripped, WorkingEffectiveFeeStats } from '../mempool.interfaces'; import { Ancestor, CpfpInfo, CpfpSummary, EffectiveFeeStats, MempoolBlockWithTransactions, TransactionExtended, MempoolTransactionExtended, TransactionStripped, WorkingEffectiveFeeStats } from '../mempool.interfaces';
import config from '../config'; import config from '../config';
import { NodeSocket } from '../repositories/NodesSocketsRepository'; import { NodeSocket } from '../repositories/NodesSocketsRepository';
import { isIP } from 'net'; import { isIP } from 'net';
@ -57,15 +57,15 @@ export class Common {
return arr; return arr;
} }
static findRbfTransactions(added: TransactionExtended[], deleted: TransactionExtended[]): { [txid: string]: TransactionExtended[] } { static findRbfTransactions(added: MempoolTransactionExtended[], deleted: MempoolTransactionExtended[]): { [txid: string]: MempoolTransactionExtended[] } {
const matches: { [txid: string]: TransactionExtended[] } = {}; const matches: { [txid: string]: MempoolTransactionExtended[] } = {};
added added
.forEach((addedTx) => { .forEach((addedTx) => {
const foundMatches = deleted.filter((deletedTx) => { const foundMatches = deleted.filter((deletedTx) => {
// The new tx must, absolutely speaking, pay at least as much fee as the replaced tx. // The new tx must, absolutely speaking, pay at least as much fee as the replaced tx.
return addedTx.fee > deletedTx.fee return addedTx.fee > deletedTx.fee
// The new transaction must pay more fee per kB than the replaced tx. // The new transaction must pay more fee per kB than the replaced tx.
&& addedTx.feePerVsize > deletedTx.feePerVsize && addedTx.adjustedFeePerVsize > deletedTx.adjustedFeePerVsize
// Spends one or more of the same inputs // Spends one or more of the same inputs
&& deletedTx.vin.some((deletedVin) => && deletedTx.vin.some((deletedVin) =>
addedTx.vin.some((vin) => vin.txid === deletedVin.txid && vin.vout === deletedVin.vout)); addedTx.vin.some((vin) => vin.txid === deletedVin.txid && vin.vout === deletedVin.vout));
@ -120,18 +120,18 @@ export class Common {
} }
} }
static setRelativesAndGetCpfpInfo(tx: TransactionExtended, memPool: { [txid: string]: TransactionExtended }): CpfpInfo { static setRelativesAndGetCpfpInfo(tx: MempoolTransactionExtended, memPool: { [txid: string]: MempoolTransactionExtended }): CpfpInfo {
const parents = this.findAllParents(tx, memPool); const parents = this.findAllParents(tx, memPool);
const lowerFeeParents = parents.filter((parent) => parent.feePerVsize < tx.effectiveFeePerVsize); const lowerFeeParents = parents.filter((parent) => parent.adjustedFeePerVsize < tx.effectiveFeePerVsize);
let totalWeight = tx.weight + lowerFeeParents.reduce((prev, val) => prev + val.weight, 0); let totalWeight = (tx.adjustedVsize * 4) + lowerFeeParents.reduce((prev, val) => prev + (val.adjustedVsize * 4), 0);
let totalFees = tx.fee + lowerFeeParents.reduce((prev, val) => prev + val.fee, 0); let totalFees = tx.fee + lowerFeeParents.reduce((prev, val) => prev + val.fee, 0);
tx.ancestors = parents tx.ancestors = parents
.map((t) => { .map((t) => {
return { return {
txid: t.txid, txid: t.txid,
weight: t.weight, weight: (t.adjustedVsize * 4),
fee: t.fee, fee: t.fee,
}; };
}); });
@ -152,8 +152,8 @@ export class Common {
} }
private static findAllParents(tx: TransactionExtended, memPool: { [txid: string]: TransactionExtended }): TransactionExtended[] { private static findAllParents(tx: MempoolTransactionExtended, memPool: { [txid: string]: MempoolTransactionExtended }): MempoolTransactionExtended[] {
let parents: TransactionExtended[] = []; let parents: MempoolTransactionExtended[] = [];
tx.vin.forEach((parent) => { tx.vin.forEach((parent) => {
if (parents.find((p) => p.txid === parent.txid)) { if (parents.find((p) => p.txid === parent.txid)) {
return; return;
@ -161,17 +161,17 @@ export class Common {
const parentTx = memPool[parent.txid]; const parentTx = memPool[parent.txid];
if (parentTx) { if (parentTx) {
if (tx.bestDescendant && tx.bestDescendant.fee / (tx.bestDescendant.weight / 4) > parentTx.feePerVsize) { if (tx.bestDescendant && tx.bestDescendant.fee / (tx.bestDescendant.weight / 4) > parentTx.adjustedFeePerVsize) {
if (parentTx.bestDescendant && parentTx.bestDescendant.fee < tx.fee + tx.bestDescendant.fee) { if (parentTx.bestDescendant && parentTx.bestDescendant.fee < tx.fee + tx.bestDescendant.fee) {
parentTx.bestDescendant = { parentTx.bestDescendant = {
weight: tx.weight + tx.bestDescendant.weight, weight: (tx.adjustedVsize * 4) + tx.bestDescendant.weight,
fee: tx.fee + tx.bestDescendant.fee, fee: tx.fee + tx.bestDescendant.fee,
txid: tx.txid, txid: tx.txid,
}; };
} }
} else if (tx.feePerVsize > parentTx.feePerVsize) { } else if (tx.adjustedFeePerVsize > parentTx.adjustedFeePerVsize) {
parentTx.bestDescendant = { parentTx.bestDescendant = {
weight: tx.weight, weight: (tx.adjustedVsize * 4),
fee: tx.fee, fee: tx.fee,
txid: tx.txid txid: tx.txid
}; };

44
backend/src/api/mempool-blocks.ts
View File

@ -1,5 +1,5 @@
import logger from '../logger'; import logger from '../logger';
import { MempoolBlock, TransactionExtended, TransactionStripped, MempoolBlockWithTransactions, MempoolBlockDelta, Ancestor, CompactThreadTransaction, EffectiveFeeStats } from '../mempool.interfaces'; import { MempoolBlock, MempoolTransactionExtended, TransactionStripped, MempoolBlockWithTransactions, MempoolBlockDelta, Ancestor, CompactThreadTransaction, EffectiveFeeStats } from '../mempool.interfaces';
import { Common, OnlineFeeStatsCalculator } from './common'; import { Common, OnlineFeeStatsCalculator } from './common';
import config from '../config'; import config from '../config';
import { Worker } from 'worker_threads'; import { Worker } from 'worker_threads';
@ -36,9 +36,9 @@ class MempoolBlocks {
return this.mempoolBlockDeltas; return this.mempoolBlockDeltas;
} }
public updateMempoolBlocks(memPool: { [txid: string]: TransactionExtended }, saveResults: boolean = false): MempoolBlockWithTransactions[] { public updateMempoolBlocks(memPool: { [txid: string]: MempoolTransactionExtended }, saveResults: boolean = false): MempoolBlockWithTransactions[] {
const latestMempool = memPool; const latestMempool = memPool;
const memPoolArray: TransactionExtended[] = []; const memPoolArray: MempoolTransactionExtended[] = [];
for (const i in latestMempool) { for (const i in latestMempool) {
if (latestMempool.hasOwnProperty(i)) { if (latestMempool.hasOwnProperty(i)) {
memPoolArray.push(latestMempool[i]); memPoolArray.push(latestMempool[i]);
@ -52,17 +52,17 @@ class MempoolBlocks {
tx.ancestors = []; tx.ancestors = [];
tx.cpfpChecked = false; tx.cpfpChecked = false;
if (!tx.effectiveFeePerVsize) { if (!tx.effectiveFeePerVsize) {
tx.effectiveFeePerVsize = tx.feePerVsize; tx.effectiveFeePerVsize = tx.adjustedFeePerVsize;
} }
}); });
// First sort // First sort
memPoolArray.sort((a, b) => { memPoolArray.sort((a, b) => {
if (a.feePerVsize === b.feePerVsize) { if (a.adjustedFeePerVsize === b.adjustedFeePerVsize) {
// tie-break by lexicographic txid order for stability // tie-break by lexicographic txid order for stability
return a.txid < b.txid ? -1 : 1; return a.txid < b.txid ? -1 : 1;
} else { } else {
return b.feePerVsize - a.feePerVsize; return b.adjustedFeePerVsize - a.adjustedFeePerVsize;
} }
}); });
@ -102,7 +102,7 @@ class MempoolBlocks {
return blocks; return blocks;
} }
private calculateMempoolBlocks(transactionsSorted: TransactionExtended[]): MempoolBlockWithTransactions[] { private calculateMempoolBlocks(transactionsSorted: MempoolTransactionExtended[]): MempoolBlockWithTransactions[] {
const mempoolBlocks: MempoolBlockWithTransactions[] = []; const mempoolBlocks: MempoolBlockWithTransactions[] = [];
let feeStatsCalculator: OnlineFeeStatsCalculator = new OnlineFeeStatsCalculator(config.MEMPOOL.BLOCK_WEIGHT_UNITS); let feeStatsCalculator: OnlineFeeStatsCalculator = new OnlineFeeStatsCalculator(config.MEMPOOL.BLOCK_WEIGHT_UNITS);
let onlineStats = false; let onlineStats = false;
@ -112,7 +112,7 @@ class MempoolBlocks {
let blockFees = 0; let blockFees = 0;
const sizeLimit = (config.MEMPOOL.BLOCK_WEIGHT_UNITS / 4) * 1.2; const sizeLimit = (config.MEMPOOL.BLOCK_WEIGHT_UNITS / 4) * 1.2;
let transactionIds: string[] = []; let transactionIds: string[] = [];
let transactions: TransactionExtended[] = []; let transactions: MempoolTransactionExtended[] = [];
transactionsSorted.forEach((tx, index) => { transactionsSorted.forEach((tx, index) => {
if (blockWeight + tx.weight <= config.MEMPOOL.BLOCK_WEIGHT_UNITS if (blockWeight + tx.weight <= config.MEMPOOL.BLOCK_WEIGHT_UNITS
|| mempoolBlocks.length === config.MEMPOOL.MEMPOOL_BLOCKS_AMOUNT - 1) { || mempoolBlocks.length === config.MEMPOOL.MEMPOOL_BLOCKS_AMOUNT - 1) {
@ -205,7 +205,7 @@ class MempoolBlocks {
return mempoolBlockDeltas; return mempoolBlockDeltas;
} }
public async $makeBlockTemplates(newMempool: { [txid: string]: TransactionExtended }, saveResults: boolean = false): Promise<MempoolBlockWithTransactions[]> { public async $makeBlockTemplates(newMempool: { [txid: string]: MempoolTransactionExtended }, saveResults: boolean = false): Promise<MempoolBlockWithTransactions[]> {
const start = Date.now(); const start = Date.now();
// reset mempool short ids // reset mempool short ids
@ -222,9 +222,9 @@ class MempoolBlocks {
strippedMempool.set(entry.uid, { strippedMempool.set(entry.uid, {
uid: entry.uid, uid: entry.uid,
fee: entry.fee, fee: entry.fee,
weight: entry.weight, weight: (entry.adjustedVsize * 4),
feePerVsize: entry.fee / (entry.weight / 4), feePerVsize: entry.adjustedFeePerVsize || entry.feePerVsize,
effectiveFeePerVsize: entry.effectiveFeePerVsize || (entry.fee / (entry.weight / 4)), effectiveFeePerVsize: entry.effectiveFeePerVsize || entry.adjustedFeePerVsize || entry.feePerVsize,
inputs: entry.vin.map(v => this.getUid(newMempool[v.txid])).filter(uid => uid != null) as number[], inputs: entry.vin.map(v => this.getUid(newMempool[v.txid])).filter(uid => uid != null) as number[],
}); });
} }
@ -268,7 +268,7 @@ class MempoolBlocks {
return this.mempoolBlocks; return this.mempoolBlocks;
} }
public async $updateBlockTemplates(newMempool: { [txid: string]: TransactionExtended }, added: TransactionExtended[], removed: TransactionExtended[], saveResults: boolean = false): Promise<void> { public async $updateBlockTemplates(newMempool: { [txid: string]: MempoolTransactionExtended }, added: MempoolTransactionExtended[], removed: MempoolTransactionExtended[], saveResults: boolean = false): Promise<void> {
if (!this.txSelectionWorker) { if (!this.txSelectionWorker) {
// need to reset the worker // need to reset the worker
await this.$makeBlockTemplates(newMempool, saveResults); await this.$makeBlockTemplates(newMempool, saveResults);
@ -287,9 +287,9 @@ class MempoolBlocks {
return { return {
uid: entry.uid || 0, uid: entry.uid || 0,
fee: entry.fee, fee: entry.fee,
weight: entry.weight, weight: (entry.adjustedVsize * 4),
feePerVsize: entry.fee / (entry.weight / 4), feePerVsize: entry.adjustedFeePerVsize || entry.feePerVsize,
effectiveFeePerVsize: entry.effectiveFeePerVsize || (entry.fee / (entry.weight / 4)), effectiveFeePerVsize: entry.effectiveFeePerVsize || entry.adjustedFeePerVsize || entry.feePerVsize,
inputs: entry.vin.map(v => this.getUid(newMempool[v.txid])).filter(uid => uid != null) as number[], inputs: entry.vin.map(v => this.getUid(newMempool[v.txid])).filter(uid => uid != null) as number[],
}; };
}); });
@ -341,12 +341,12 @@ class MempoolBlocks {
for (let blockIndex = 0; blockIndex < blocks.length; blockIndex++) { for (let blockIndex = 0; blockIndex < blocks.length; blockIndex++) {
const block: string[] = blocks[blockIndex]; const block: string[] = blocks[blockIndex];
let txid: string; let txid: string;
let mempoolTx: TransactionExtended; let mempoolTx: MempoolTransactionExtended;
let totalSize = 0; let totalSize = 0;
let totalVsize = 0; let totalVsize = 0;
let totalWeight = 0; let totalWeight = 0;
let totalFees = 0; let totalFees = 0;
const transactions: TransactionExtended[] = []; const transactions: MempoolTransactionExtended[] = [];
for (let txIndex = 0; txIndex < block.length; txIndex++) { for (let txIndex = 0; txIndex < block.length; txIndex++) {
txid = block[txIndex]; txid = block[txIndex];
if (txid) { if (txid) {
@ -397,7 +397,7 @@ class MempoolBlocks {
const relative = { const relative = {
txid: txid, txid: txid,
fee: mempool[txid].fee, fee: mempool[txid].fee,
weight: mempool[txid].weight, weight: (mempool[txid].adjustedVsize * 4),
}; };
if (matched) { if (matched) {
descendants.push(relative); descendants.push(relative);
@ -426,7 +426,7 @@ class MempoolBlocks {
return mempoolBlocks; return mempoolBlocks;
} }
private dataToMempoolBlocks(transactionIds: string[], transactions: TransactionExtended[], totalSize: number, totalWeight: number, totalFees: number, feeStats?: EffectiveFeeStats ): MempoolBlockWithTransactions { private dataToMempoolBlocks(transactionIds: string[], transactions: MempoolTransactionExtended[], totalSize: number, totalWeight: number, totalFees: number, feeStats?: EffectiveFeeStats ): MempoolBlockWithTransactions {
if (!feeStats) { if (!feeStats) {
feeStats = Common.calcEffectiveFeeStatistics(transactions); feeStats = Common.calcEffectiveFeeStatistics(transactions);
} }
@ -447,7 +447,7 @@ class MempoolBlocks {
this.nextUid = 1; this.nextUid = 1;
} }
private setUid(tx: TransactionExtended): number { private setUid(tx: MempoolTransactionExtended): number {
const uid = this.nextUid; const uid = this.nextUid;
this.nextUid++; this.nextUid++;
this.uidMap.set(uid, tx.txid); this.uidMap.set(uid, tx.txid);
@ -455,7 +455,7 @@ class MempoolBlocks {
return uid; return uid;
} }
private getUid(tx: TransactionExtended): number | void { private getUid(tx: MempoolTransactionExtended): number | void {
if (tx?.uid != null && this.uidMap.has(tx.uid)) { if (tx?.uid != null && this.uidMap.has(tx.uid)) {
return tx.uid; return tx.uid;
} }

47
backend/src/api/mempool.ts
View File

@ -1,6 +1,6 @@
import config from '../config'; import config from '../config';
import bitcoinApi from './bitcoin/bitcoin-api-factory'; import bitcoinApi from './bitcoin/bitcoin-api-factory';
import { TransactionExtended, VbytesPerSecond } from '../mempool.interfaces'; import { MempoolTransactionExtended, VbytesPerSecond } from '../mempool.interfaces';
import logger from '../logger'; import logger from '../logger';
import { Common } from './common'; import { Common } from './common';
import transactionUtils from './transaction-utils'; import transactionUtils from './transaction-utils';
@ -13,14 +13,14 @@ import rbfCache from './rbf-cache';
class Mempool { class Mempool {
private inSync: boolean = false; private inSync: boolean = false;
private mempoolCacheDelta: number = -1; private mempoolCacheDelta: number = -1;
private mempoolCache: { [txId: string]: TransactionExtended } = {}; private mempoolCache: { [txId: string]: MempoolTransactionExtended } = {};
private spendMap = new Map<string, TransactionExtended>(); private spendMap = new Map<string, MempoolTransactionExtended>();
private mempoolInfo: IBitcoinApi.MempoolInfo = { loaded: false, size: 0, bytes: 0, usage: 0, total_fee: 0, private mempoolInfo: IBitcoinApi.MempoolInfo = { loaded: false, size: 0, bytes: 0, usage: 0, total_fee: 0,
maxmempool: 300000000, mempoolminfee: 0.00001000, minrelaytxfee: 0.00001000 }; maxmempool: 300000000, mempoolminfee: 0.00001000, minrelaytxfee: 0.00001000 };
private mempoolChangedCallback: ((newMempool: {[txId: string]: TransactionExtended; }, newTransactions: TransactionExtended[], private mempoolChangedCallback: ((newMempool: {[txId: string]: MempoolTransactionExtended; }, newTransactions: MempoolTransactionExtended[],
deletedTransactions: TransactionExtended[]) => void) | undefined; deletedTransactions: MempoolTransactionExtended[]) => void) | undefined;
private $asyncMempoolChangedCallback: ((newMempool: {[txId: string]: TransactionExtended; }, newTransactions: TransactionExtended[], private $asyncMempoolChangedCallback: ((newMempool: {[txId: string]: MempoolTransactionExtended; }, newTransactions: MempoolTransactionExtended[],
deletedTransactions: TransactionExtended[]) => Promise<void>) | undefined; deletedTransactions: MempoolTransactionExtended[]) => Promise<void>) | undefined;
private txPerSecondArray: number[] = []; private txPerSecondArray: number[] = [];
private txPerSecond: number = 0; private txPerSecond: number = 0;
@ -64,26 +64,31 @@ class Mempool {
return this.latestTransactions; return this.latestTransactions;
} }
public setMempoolChangedCallback(fn: (newMempool: { [txId: string]: TransactionExtended; }, public setMempoolChangedCallback(fn: (newMempool: { [txId: string]: MempoolTransactionExtended; },
newTransactions: TransactionExtended[], deletedTransactions: TransactionExtended[]) => void) { newTransactions: MempoolTransactionExtended[], deletedTransactions: MempoolTransactionExtended[]) => void): void {
this.mempoolChangedCallback = fn; this.mempoolChangedCallback = fn;
} }
public setAsyncMempoolChangedCallback(fn: (newMempool: { [txId: string]: TransactionExtended; }, public setAsyncMempoolChangedCallback(fn: (newMempool: { [txId: string]: MempoolTransactionExtended; },
newTransactions: TransactionExtended[], deletedTransactions: TransactionExtended[]) => Promise<void>) { newTransactions: MempoolTransactionExtended[], deletedTransactions: MempoolTransactionExtended[]) => Promise<void>): void {
this.$asyncMempoolChangedCallback = fn; this.$asyncMempoolChangedCallback = fn;
} }
public getMempool(): { [txid: string]: TransactionExtended } { public getMempool(): { [txid: string]: MempoolTransactionExtended } {
return this.mempoolCache; return this.mempoolCache;
} }
public getSpendMap(): Map<string, TransactionExtended> { public getSpendMap(): Map<string, MempoolTransactionExtended> {
return this.spendMap; return this.spendMap;
} }
public async $setMempool(mempoolData: { [txId: string]: TransactionExtended }) { public async $setMempool(mempoolData: { [txId: string]: MempoolTransactionExtended }) {
this.mempoolCache = mempoolData; this.mempoolCache = mempoolData;
for (const txid of Object.keys(this.mempoolCache)) {
if (this.mempoolCache[txid].sigops == null || this.mempoolCache[txid].effectiveFeePerVsize == null) {
this.mempoolCache[txid] = transactionUtils.extendMempoolTransaction(this.mempoolCache[txid]);
}
}
if (this.mempoolChangedCallback) { if (this.mempoolChangedCallback) {
this.mempoolChangedCallback(this.mempoolCache, [], []); this.mempoolChangedCallback(this.mempoolCache, [], []);
} }
@ -133,7 +138,7 @@ class Mempool {
const currentMempoolSize = Object.keys(this.mempoolCache).length; const currentMempoolSize = Object.keys(this.mempoolCache).length;
this.updateTimerProgress(timer, 'got raw mempool'); this.updateTimerProgress(timer, 'got raw mempool');
const diff = transactions.length - currentMempoolSize; const diff = transactions.length - currentMempoolSize;
const newTransactions: TransactionExtended[] = []; const newTransactions: MempoolTransactionExtended[] = [];
this.mempoolCacheDelta = Math.abs(diff); this.mempoolCacheDelta = Math.abs(diff);
@ -155,7 +160,7 @@ class Mempool {
for (const txid of transactions) { for (const txid of transactions) {
if (!this.mempoolCache[txid]) { if (!this.mempoolCache[txid]) {
try { try {
const transaction = await transactionUtils.$getTransactionExtended(txid); const transaction = await transactionUtils.$getMempoolTransactionExtended(txid, false, false, false);
this.updateTimerProgress(timer, 'fetched new transaction'); this.updateTimerProgress(timer, 'fetched new transaction');
this.mempoolCache[txid] = transaction; this.mempoolCache[txid] = transaction;
if (this.inSync) { if (this.inSync) {
@ -205,7 +210,7 @@ class Mempool {
}, 1000 * 60 * config.MEMPOOL.CLEAR_PROTECTION_MINUTES); }, 1000 * 60 * config.MEMPOOL.CLEAR_PROTECTION_MINUTES);
} }
const deletedTransactions: TransactionExtended[] = []; const deletedTransactions: MempoolTransactionExtended[] = [];
if (this.mempoolProtection !== 1) { if (this.mempoolProtection !== 1) {
this.mempoolProtection = 0; this.mempoolProtection = 0;
@ -273,7 +278,7 @@ class Mempool {
} }
} }
public handleRbfTransactions(rbfTransactions: { [txid: string]: TransactionExtended[]; }): void { public handleRbfTransactions(rbfTransactions: { [txid: string]: MempoolTransactionExtended[]; }): void {
for (const rbfTransaction in rbfTransactions) { for (const rbfTransaction in rbfTransactions) {
if (this.mempoolCache[rbfTransaction] && rbfTransactions[rbfTransaction]?.length) { if (this.mempoolCache[rbfTransaction] && rbfTransactions[rbfTransaction]?.length) {
// Store replaced transactions // Store replaced transactions
@ -282,7 +287,7 @@ class Mempool {
} }
} }
public handleMinedRbfTransactions(rbfTransactions: { [txid: string]: { replaced: TransactionExtended[], replacedBy: TransactionExtended }}): void { public handleMinedRbfTransactions(rbfTransactions: { [txid: string]: { replaced: MempoolTransactionExtended[], replacedBy: MempoolTransactionExtended }}): void {
for (const rbfTransaction in rbfTransactions) { for (const rbfTransaction in rbfTransactions) {
if (rbfTransactions[rbfTransaction].replacedBy && rbfTransactions[rbfTransaction]?.replaced?.length) { if (rbfTransactions[rbfTransaction].replacedBy && rbfTransactions[rbfTransaction]?.replaced?.length) {
// Store replaced transactions // Store replaced transactions
@ -291,7 +296,7 @@ class Mempool {
} }
} }
public addToSpendMap(transactions: TransactionExtended[]): void { public addToSpendMap(transactions: MempoolTransactionExtended[]): void {
for (const tx of transactions) { for (const tx of transactions) {
for (const vin of tx.vin) { for (const vin of tx.vin) {
this.spendMap.set(`${vin.txid}:${vin.vout}`, tx); this.spendMap.set(`${vin.txid}:${vin.vout}`, tx);
@ -299,7 +304,7 @@ class Mempool {
} }
} }
public removeFromSpendMap(transactions: TransactionExtended[]): void { public removeFromSpendMap(transactions: MempoolTransactionExtended[]): void {
for (const tx of transactions) { for (const tx of transactions) {
for (const vin of tx.vin) { for (const vin of tx.vin) {
const key = `${vin.txid}:${vin.vout}`; const key = `${vin.txid}:${vin.vout}`;

10
backend/src/api/rbf-cache.ts
View File

@ -1,5 +1,5 @@
import logger from "../logger"; import logger from "../logger";
import { TransactionExtended, TransactionStripped } from "../mempool.interfaces"; import { MempoolTransactionExtended, TransactionStripped } from "../mempool.interfaces";
import bitcoinApi from './bitcoin/bitcoin-api-factory'; import bitcoinApi from './bitcoin/bitcoin-api-factory';
import { Common } from "./common"; import { Common } from "./common";
@ -23,14 +23,14 @@ class RbfCache {
private rbfTrees: Map<string, RbfTree> = new Map(); // sequences of consecutive replacements private rbfTrees: Map<string, RbfTree> = new Map(); // sequences of consecutive replacements
private dirtyTrees: Set<string> = new Set(); private dirtyTrees: Set<string> = new Set();
private treeMap: Map<string, string> = new Map(); // map of txids to sequence ids private treeMap: Map<string, string> = new Map(); // map of txids to sequence ids
private txs: Map<string, TransactionExtended> = new Map(); private txs: Map<string, MempoolTransactionExtended> = new Map();
private expiring: Map<string, number> = new Map(); private expiring: Map<string, number> = new Map();
constructor() { constructor() {
setInterval(this.cleanup.bind(this), 1000 * 60 * 10); setInterval(this.cleanup.bind(this), 1000 * 60 * 10);
} }
public add(replaced: TransactionExtended[], newTxExtended: TransactionExtended): void { public add(replaced: MempoolTransactionExtended[], newTxExtended: MempoolTransactionExtended): void {
if (!newTxExtended || !replaced?.length || this.txs.has(newTxExtended.txid)) { if (!newTxExtended || !replaced?.length || this.txs.has(newTxExtended.txid)) {
return; return;
} }
@ -92,7 +92,7 @@ class RbfCache {
return this.replaces.get(txId); return this.replaces.get(txId);
} }
public getTx(txId: string): TransactionExtended | undefined { public getTx(txId: string): MempoolTransactionExtended | undefined {
return this.txs.get(txId); return this.txs.get(txId);
} }
@ -272,7 +272,7 @@ class RbfCache {
return deflated; return deflated;
} }
async importTree(root, txid, deflated, txs: Map<string, TransactionExtended>, mined: boolean = false): Promise<RbfTree | void> { async importTree(root, txid, deflated, txs: Map<string, MempoolTransactionExtended>, mined: boolean = false): Promise<RbfTree | void> {
const treeInfo = deflated[txid]; const treeInfo = deflated[txid];
const replaces: RbfTree[] = []; const replaces: RbfTree[] = [];

104
backend/src/api/transaction-utils.ts
View File

@ -1,7 +1,8 @@
import { TransactionExtended, TransactionMinerInfo } from '../mempool.interfaces'; import { TransactionExtended, MempoolTransactionExtended, TransactionMinerInfo } from '../mempool.interfaces';
import { IEsploraApi } from './bitcoin/esplora-api.interface'; import { IEsploraApi } from './bitcoin/esplora-api.interface';
import { Common } from './common'; import { Common } from './common';
import bitcoinApi, { bitcoinCoreApi } from './bitcoin/bitcoin-api-factory'; import bitcoinApi, { bitcoinCoreApi } from './bitcoin/bitcoin-api-factory';
import * as bitcoinjs from 'bitcoinjs-lib';
class TransactionUtils { class TransactionUtils {
constructor() { } constructor() { }
@ -22,19 +23,27 @@ class TransactionUtils {
} }
/** /**
* @param txId * @param txId
* @param addPrevouts * @param addPrevouts
* @param lazyPrevouts * @param lazyPrevouts
* @param forceCore - See https://github.com/mempool/mempool/issues/2904 * @param forceCore - See https://github.com/mempool/mempool/issues/2904
*/ */
public async $getTransactionExtended(txId: string, addPrevouts = false, lazyPrevouts = false, forceCore = false): Promise<TransactionExtended> { public async $getTransactionExtended(txId: string, addPrevouts = false, lazyPrevouts = false, forceCore = false, addMempoolData = false): Promise<TransactionExtended> {
let transaction: IEsploraApi.Transaction; let transaction: IEsploraApi.Transaction;
if (forceCore === true) { if (forceCore === true) {
transaction = await bitcoinCoreApi.$getRawTransaction(txId, true); transaction = await bitcoinCoreApi.$getRawTransaction(txId, true);
} else { } else {
transaction = await bitcoinApi.$getRawTransaction(txId, false, addPrevouts, lazyPrevouts); transaction = await bitcoinApi.$getRawTransaction(txId, false, addPrevouts, lazyPrevouts);
} }
return this.extendTransaction(transaction); if (addMempoolData || !transaction?.status?.confirmed) {
return this.extendMempoolTransaction(transaction);
} else {
return this.extendTransaction(transaction);
}
}
public async $getMempoolTransactionExtended(txId: string, addPrevouts = false, lazyPrevouts = false, forceCore = false): Promise<MempoolTransactionExtended> {
return (await this.$getTransactionExtended(txId, addPrevouts, lazyPrevouts, forceCore, true)) as MempoolTransactionExtended;
} }
private extendTransaction(transaction: IEsploraApi.Transaction): TransactionExtended { private extendTransaction(transaction: IEsploraApi.Transaction): TransactionExtended {
@ -50,7 +59,30 @@ class TransactionUtils {
feePerVsize: feePerVbytes, feePerVsize: feePerVbytes,
effectiveFeePerVsize: feePerVbytes, effectiveFeePerVsize: feePerVbytes,
}, transaction); }, transaction);
if (!transaction.status.confirmed) { if (!transaction?.status?.confirmed) {
transactionExtended.firstSeen = Math.round((new Date().getTime() / 1000));
}
return transactionExtended;
}
public extendMempoolTransaction(transaction: IEsploraApi.Transaction): MempoolTransactionExtended {
const vsize = Math.ceil(transaction.weight / 4);
const sigops = this.countSigops(transaction);
// https://github.com/bitcoin/bitcoin/blob/e9262ea32a6e1d364fb7974844fadc36f931f8c6/src/policy/policy.cpp#L295-L298
const adjustedVsize = Math.max(vsize, sigops * 5); // adjusted vsize = Max(weight, sigops * bytes_per_sigop) / witness_scale_factor
const feePerVbytes = Math.max(Common.isLiquid() ? 0.1 : 1,
(transaction.fee || 0) / vsize);
const adjustedFeePerVsize = Math.max(Common.isLiquid() ? 0.1 : 1,
(transaction.fee || 0) / adjustedVsize);
const transactionExtended: MempoolTransactionExtended = Object.assign(transaction, {
vsize: Math.round(transaction.weight / 4),
adjustedVsize,
sigops,
feePerVsize: feePerVbytes,
adjustedFeePerVsize: adjustedFeePerVsize,
effectiveFeePerVsize: adjustedFeePerVsize,
});
if (!transaction?.status?.confirmed) {
transactionExtended.firstSeen = Math.round((new Date().getTime() / 1000)); transactionExtended.firstSeen = Math.round((new Date().getTime() / 1000));
} }
return transactionExtended; return transactionExtended;
@ -63,6 +95,64 @@ class TransactionUtils {
} }
return str; return str;
} }
public countScriptSigops(script: string, isRawScript: boolean = false, witness: boolean = false): number {
let sigops = 0;
// count OP_CHECKSIG and OP_CHECKSIGVERIFY
sigops += (script.match(/OP_CHECKSIG/g)?.length || 0);
// count OP_CHECKMULTISIG and OP_CHECKMULTISIGVERIFY
if (isRawScript) {
// in scriptPubKey or scriptSig, always worth 20
sigops += 20 * (script.match(/OP_CHECKMULTISIG/g)?.length || 0);
} else {
// in redeem scripts and witnesses, worth N if preceded by OP_N, 20 otherwise
const matches = script.matchAll(/(?:OP_(\d+))? OP_CHECKMULTISIG/g);
for (const match of matches) {
const n = parseInt(match[1]);
if (Number.isInteger(n)) {
sigops += n;
} else {
sigops += 20;
}
}
}
return witness ? sigops : (sigops * 4);
}
public countSigops(transaction: IEsploraApi.Transaction): number {
let sigops = 0;
for (const input of transaction.vin) {
if (input.scriptsig_asm) {
sigops += this.countScriptSigops(input.scriptsig_asm, true);
}
if (input.prevout) {
switch (true) {
case input.prevout.scriptpubkey_type === 'p2sh' && input.witness?.length === 2 && input.scriptsig && input.scriptsig.startsWith('160014'):
case input.prevout.scriptpubkey_type === 'v0_p2wpkh':
sigops += 1;
break;
case input.prevout?.scriptpubkey_type === 'p2sh' && input.witness?.length && input.scriptsig && input.scriptsig.startsWith('220020'):
case input.prevout.scriptpubkey_type === 'v0_p2wsh':
if (input.witness?.length) {
sigops += this.countScriptSigops(bitcoinjs.script.toASM(Buffer.from(input.witness[input.witness.length - 1], 'hex')), false, true);
}
break;
}
}
}
for (const output of transaction.vout) {
if (output.scriptpubkey_asm) {
sigops += this.countScriptSigops(output.scriptpubkey_asm, true);
}
}
return sigops;
}
} }
export default new TransactionUtils(); export default new TransactionUtils();

16
backend/src/api/websocket-handler.ts
View File

@ -1,7 +1,7 @@
import logger from '../logger'; import logger from '../logger';
import * as WebSocket from 'ws'; import * as WebSocket from 'ws';
import { import {
BlockExtended, TransactionExtended, WebsocketResponse, BlockExtended, TransactionExtended, MempoolTransactionExtended, WebsocketResponse,
OptimizedStatistic, ILoadingIndicators OptimizedStatistic, ILoadingIndicators
} from '../mempool.interfaces'; } from '../mempool.interfaces';
import blocks from './blocks'; import blocks from './blocks';
@ -122,7 +122,7 @@ class WebsocketHandler {
} else { } else {
// tx.prevout is missing from transactions when in bitcoind mode // tx.prevout is missing from transactions when in bitcoind mode
try { try {
const fullTx = await transactionUtils.$getTransactionExtended(tx.txid, true); const fullTx = await transactionUtils.$getMempoolTransactionExtended(tx.txid, true);
response['tx'] = fullTx; response['tx'] = fullTx;
} catch (e) { } catch (e) {
logger.debug('Error finding transaction: ' + (e instanceof Error ? e.message : e)); logger.debug('Error finding transaction: ' + (e instanceof Error ? e.message : e));
@ -130,7 +130,7 @@ class WebsocketHandler {
} }
} else { } else {
try { try {
const fullTx = await transactionUtils.$getTransactionExtended(client['track-tx'], true); const fullTx = await transactionUtils.$getMempoolTransactionExtended(client['track-tx'], true);
response['tx'] = fullTx; response['tx'] = fullTx;
} catch (e) { } catch (e) {
logger.debug('Error finding transaction. ' + (e instanceof Error ? e.message : e)); logger.debug('Error finding transaction. ' + (e instanceof Error ? e.message : e));
@ -301,8 +301,8 @@ class WebsocketHandler {
}); });
} }
async $handleMempoolChange(newMempool: { [txid: string]: TransactionExtended }, async $handleMempoolChange(newMempool: { [txid: string]: MempoolTransactionExtended },
newTransactions: TransactionExtended[], deletedTransactions: TransactionExtended[]): Promise<void> { newTransactions: MempoolTransactionExtended[], deletedTransactions: MempoolTransactionExtended[]): Promise<void> {
if (!this.wss) { if (!this.wss) {
throw new Error('WebSocket.Server is not set'); throw new Error('WebSocket.Server is not set');
} }
@ -399,7 +399,7 @@ class WebsocketHandler {
if (tx) { if (tx) {
if (config.MEMPOOL.BACKEND !== 'esplora') { if (config.MEMPOOL.BACKEND !== 'esplora') {
try { try {
const fullTx = await transactionUtils.$getTransactionExtended(tx.txid, true); const fullTx = await transactionUtils.$getMempoolTransactionExtended(tx.txid, true);
response['tx'] = JSON.stringify(fullTx); response['tx'] = JSON.stringify(fullTx);
} catch (e) { } catch (e) {
logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e)); logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));
@ -419,7 +419,7 @@ class WebsocketHandler {
if (someVin) { if (someVin) {
if (config.MEMPOOL.BACKEND !== 'esplora') { if (config.MEMPOOL.BACKEND !== 'esplora') {
try { try {
const fullTx = await transactionUtils.$getTransactionExtended(tx.txid, true); const fullTx = await transactionUtils.$getMempoolTransactionExtended(tx.txid, true);
foundTransactions.push(fullTx); foundTransactions.push(fullTx);
} catch (e) { } catch (e) {
logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e)); logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));
@ -433,7 +433,7 @@ class WebsocketHandler {
if (someVout) { if (someVout) {
if (config.MEMPOOL.BACKEND !== 'esplora') { if (config.MEMPOOL.BACKEND !== 'esplora') {
try { try {
const fullTx = await transactionUtils.$getTransactionExtended(tx.txid, true); const fullTx = await transactionUtils.$getMempoolTransactionExtended(tx.txid, true);
foundTransactions.push(fullTx); foundTransactions.push(fullTx);
} catch (e) { } catch (e) {
logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e)); logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));

6
backend/src/mempool.interfaces.ts
View File

@ -88,6 +88,12 @@ export interface TransactionExtended extends IEsploraApi.Transaction {
uid?: number; uid?: number;
} }
export interface MempoolTransactionExtended extends TransactionExtended {
sigops: number;
adjustedVsize: number;
adjustedFeePerVsize: number;
}
export interface AuditTransaction { export interface AuditTransaction {
uid: number; uid: number;
fee: number; fee: number;