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Add pool identifier configuration and improve script size handling (#60)

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* fixed a couple tests because of imports, missing newline chars and missing constructor parameters

* Add pool identifier configuration and improve script size handling
This commit is contained in:
Stijn
2024-08-30 08:57:43 -04:00
committed by GitHub
parent 7bb436bf1f
commit 8ce057b3b5
5 changed files with 209 additions and 6 deletions
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src/models/MiningJob.ts
+23 -5
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@@ -4,8 +4,10 @@ import * as bitcoinjs from 'bitcoinjs-lib';
import { IJobTemplate } from '../services/stratum-v1-jobs.service';
import { eResponseMethod } from './enums/eResponseMethod';
import { IMiningNotify } from './stratum-messages/IMiningNotify';
import { ConfigService } from '@nestjs/config';
const MAX_BLOCK_WEIGHT = 4000000;
const MAX_SCRIPT_SIZE = 100; // https://github.com/bitcoin/bitcoin/blob/ffdc3d6060f6e65e69cf115a13b83e6eb4a0a0a8/src/consensus/tx_check.cpp#L49
interface AddressObject {
address: string;
percent: number;
@@ -21,6 +23,7 @@ export class MiningJob {
constructor(
configService: ConfigService,
private network: bitcoinjs.networks.Network,
public jobId: string,
payoutInformation: AddressObject[],
@@ -39,7 +42,9 @@ export class MiningJob {
// 32-byte - Commitment hash: Double-SHA256(witness root hash|witness reserved value)
// 39th byte onwards: Optional data with no consensus meaning
const extra = Buffer.from('Public-Pool');
// Initial pool identifier
let poolIdentifier = configService.get('POOL_IDENTIFIER') || 'Public-Pool';
let extra = Buffer.from(poolIdentifier);
// Encode the block height
// https://github.com/bitcoin/bips/blob/master/bip-0034.mediawiki
@@ -48,14 +53,27 @@ export class MiningJob {
// Get the length of the block height encoding
const blockHeightLengthByte = Buffer.from([blockHeightEncoded.length]);
// generate padding and take length of encode blockHeight into account
// Generate padding and take length of encode blockHeight into account
const padding = Buffer.alloc(8 + (3 - blockHeightEncoded.length), 0)
// build the script
this.coinbaseTransaction.ins[0].script = Buffer.concat([blockHeightLengthByte, blockHeightEncoded, extra, padding])
// Build the script
let script = Buffer.concat([blockHeightLengthByte, blockHeightEncoded, extra, padding]);
// Check if the pool identifier is too long
if (script.length > MAX_SCRIPT_SIZE) {
console.warn('Pool identifier is too long, removing the pool identifier');
script = Buffer.concat([blockHeightLengthByte, blockHeightEncoded, padding]);
}
this.coinbaseTransaction.ins[0].script = script;
this.coinbaseTransaction.addOutput(bitcoinjs.script.compile([bitcoinjs.opcodes.OP_RETURN, Buffer.concat([segwitMagicBits, jobTemplate.block.witnessCommit])]), 0);
// Check if the pool identifier is too long
if ((this.coinbaseTransaction.weight() + jobTemplate.block.weight()) > MAX_BLOCK_WEIGHT) {
console.warn('Block weight exceeds the maximum allowed weight, removing the pool identifier');
let script = Buffer.concat([blockHeightLengthByte, blockHeightEncoded, padding]);
this.coinbaseTransaction.ins[0].script = script;
}
// get the non-witness coinbase tx
//@ts-ignore
const serializedCoinbaseTx = this.coinbaseTransaction.__toBuffer().toString('hex');