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tighten sanity checks in block audit

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Mononaut 2023-03-24 09:49:02 +09:00
parent 28de93d0ff
commit 61f24562fd
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GPG Key ID: A3F058E41374C04E
1 changed files with 38 additions and 30 deletions
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30
backend/src/api/audit.ts
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@ -39,17 +39,19 @@ class Audit {
} else {
isCensored[txid] = true;
}
displacedWeight += mempool[txid].weight;
displacedWeight += mempool[txid]?.weight || 0;
} else {
matchedWeight += mempool[txid].weight;
matchedWeight += mempool[txid]?.weight || 0;
}
projectedWeight += mempool[txid].weight;
projectedWeight += mempool[txid]?.weight || 0;
inTemplate[txid] = true;
}
if (transactions[0]) {
displacedWeight += (4000 - transactions[0].weight);
projectedWeight += transactions[0].weight;
matchedWeight += transactions[0].weight;
}
// we can expect an honest miner to include 'displaced' transactions in place of recent arrivals and censored txs
// these displaced transactions should occupy the first N weight units of the next projected block
@ -59,20 +61,23 @@ class Audit {
let failures = 0;
while (projectedBlocks[1] && index < projectedBlocks[1].transactionIds.length && failures < 500) {
const txid = projectedBlocks[1].transactionIds[index];
const fits = (mempool[txid].weight - displacedWeightRemaining) < 4000;
const feeMatches = mempool[txid].effectiveFeePerVsize >= lastFeeRate;
const tx = mempool[txid];
if (tx) {
const fits = (tx.weight - displacedWeightRemaining) < 4000;
const feeMatches = tx.effectiveFeePerVsize >= lastFeeRate;
if (fits || feeMatches) {
isDisplaced[txid] = true;
if (fits) {
lastFeeRate = Math.min(lastFeeRate, mempool[txid].effectiveFeePerVsize);
lastFeeRate = Math.min(lastFeeRate, tx.effectiveFeePerVsize);
}
if (mempool[txid].firstSeen == null || (now - (mempool[txid]?.firstSeen || 0)) > PROPAGATION_MARGIN) {
displacedWeightRemaining -= mempool[txid].weight;
if (tx.firstSeen == null || (now - (tx?.firstSeen || 0)) > PROPAGATION_MARGIN) {
displacedWeightRemaining -= tx.weight;
}
failures = 0;
} else {
failures++;
}
}
index++;
}
@ -108,20 +113,23 @@ class Audit {
index = projectedBlocks[0].transactionIds.length - 1;
while (index >= 0) {
const txid = projectedBlocks[0].transactionIds[index];
const tx = mempool[txid];
if (tx) {
if (overflowWeightRemaining > 0) {
if (isCensored[txid]) {
delete isCensored[txid];
}
if (mempool[txid].effectiveFeePerVsize > maxOverflowRate) {
maxOverflowRate = mempool[txid].effectiveFeePerVsize;
if (tx.effectiveFeePerVsize > maxOverflowRate) {
maxOverflowRate = tx.effectiveFeePerVsize;
rateThreshold = (Math.ceil(maxOverflowRate * 100) / 100) + 0.005;
}
} else if (mempool[txid].effectiveFeePerVsize <= rateThreshold) { // tolerance of 0.01 sat/vb + rounding
} else if (tx.effectiveFeePerVsize <= rateThreshold) { // tolerance of 0.01 sat/vb + rounding
if (isCensored[txid]) {
delete isCensored[txid];
}
}
overflowWeightRemaining -= (mempool[txid]?.weight || 0);
}
index--;
}