Sync package lock for Node 24

* feat:external shares
---------

Co-authored-by: mrv777 <mrv777@users.noreply.github.com>
Co-authored-by: Benjamin Wilson <admin@opensourceminer.com>

.env.example

@@ -10,15 +10,16 @@ BITCOIN_RPC_PASSWORD=
 BITCOIN_RPC_PORT=8332
 BITCOIN_RPC_TIMEOUT=10000
 
+# You can use this instead of BITCOIN_RPC_USER and BITCOIN_RPC_PASSWORD
+BITCOIN_RPC_COOKIEFILE=
+
 # Enable in bitcoin.conf with
 # zmqpubrawblock=tcp://*:3000
 # BITCOIN_ZMQ_HOST="tcp://192.168.1.100:3000"
 
 API_PORT=3334
-STRATUM_PORTS=3333,3332,3331,3330
-
-STRATUM_SECURE=true
-SECURE_STRATUM_PORTS=4333,4332,4331,4330
+STRATUM_PORT=3333
+STRATUM_MAX_CONNECTIONS_PER_LISTENER=10000
 
 #optional telegram bot
 #TELEGRAM_BOT_TOKEN=
@@ -34,12 +35,5 @@ DEV_FEE_ADDRESS=
 NETWORK=mainnet
 
 API_SECURE=false
-
-#postgresql
-DB_HOST=
-DB_PORT=
-DB_USERNAME=
-DB_PASSWORD=
-DB_DATABASE=
-
-PRODUCTION=false
+# Default is "Public-Pool", you can change it to any string it will be removed if it will make the block or coinbase script too big
+POOL_IDENTIFIER="Public-Pool"

Dockerfile

@@ -2,7 +2,7 @@
 # Docker build environment #
 ############################
 
-FROM node:18.16.1-bookworm-slim AS build
+FROM node:24.16.0-bookworm-slim AS build
 
 # Upgrade all packages and install dependencies
 RUN apt-get update \
@@ -11,6 +11,8 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
         python3 \
         build-essential \
         cmake \
+        curl \
+        ca-certificates \
     && apt clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 WORKDIR /build
@@ -24,7 +26,7 @@ RUN npm i && npm run build
 # Docker final environment #
 ############################
 
-FROM node:18.16.1-bookworm-slim
+FROM node:24.16.0-bookworm-slim
 
 # Expose ports for Stratum and Bitcoin RPC
 EXPOSE 3333 3334 8332

README.md

@@ -45,6 +45,20 @@ Install pm2 (https://pm2.keymetrics.io/)
 $ pm2 start dist/main.js
 ```
 
+When running the worker app in PM2 cluster mode, start the PM2 daemon with OS-level
+connection scheduling. The environment variable must be present when the PM2 daemon
+starts, not only in the worker configuration.
+
+```bash
+$ NODE_CLUSTER_SCHED_POLICY=none pm2 start ecosystem.config.js
+```
+
+Cluster-mode connection dropping requires Node.js `22.12.0` or newer.
+
+`STRATUM_MAX_CONNECTIONS_PER_LISTENER` is enforced per worker and Stratum port.
+Size it using the busiest port: `worker count * limit`. For example, 28 workers
+with the default limit of `10000` allow up to `280000` connections on one port.
+
 ## Docker
 
 Build container:

ecosystem.config.js

@@ -1,25 +0,0 @@
-module.exports = {
-    apps: [
-      // Master instance
-      {
-        name: 'master',
-        script: './dist/main.js',
-        instances: 1,
-        env: {
-          MASTER: 'true',
-        },
-        time: true
-      },
-      // Worker instances
-      {
-        name: 'workers',
-        script: './dist/main.js',
-        instances: 2,
-        exec_mode: "cluster",
-        env: {
-          MASTER: 'false',
-        },
-        time: true
-      },
-    ],
-  };

package.json

@@ -5,6 +5,9 @@
   "author": "",
   "private": true,
   "license": "UNLICENSED",
+  "engines": {
+    "node": ">=22.12.0"
+  },
   "scripts": {
     "build": "nest build",
     "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
@@ -30,7 +33,6 @@
     "@nestjs/schedule": "^6.1.3",
     "@nestjs/typeorm": "^11.0.1",
     "axios": "^1.16.0",
-    "better-sqlite3": "^12.9.0",
     "bitcoin-address-validation": "^2.2.3",
     "bitcoinjs-lib": "^6.1.7",
     "bs58": "^5.0.0",
@@ -39,8 +41,7 @@
     "class-validator": "^0.14.4",
     "discord.js": "^14.26.4",
     "merkle-lib": "^2.0.10",
-    "pg": "^8.20.0",
-    "pg-pubsub": "^0.8.1",
+    "sqlite3": "^5.1.6",
     "reflect-metadata": "^0.2.2",
     "rxjs": "^7.8.2",
     "tiny-secp256k1": "^2.2.4",

src/ORM/_migrations/UniqueNonceIndex.ts

@@ -1,15 +0,0 @@
-import { MigrationInterface, QueryRunner } from 'typeorm';
-
-export class UniqueNonceIndex implements MigrationInterface {
-
-    public async up(queryRunner: QueryRunner): Promise<void> {
-        await queryRunner.query(
-            `CREATE UNIQUE INDEX "IDX_unique_nonce" ON "client_entity" ("sessionId") WHERE "deletedAt" IS NOT NULL`
-        );
-    }
-
-    public async down(queryRunner: QueryRunner): Promise<void> {
-        await queryRunner.query(`DROP INDEX "IDX_unique_nonce"`);
-    }
-
-}

src/ORM/_views/user-agent-report/user-agent-report.module.ts

@@ -1,15 +0,0 @@
-import { Global, Module } from '@nestjs/common';
-import { TypeOrmModule } from '@nestjs/typeorm';
-
-import { UserAgentReportService } from './user-agent-report.service';
-import { UserAgentReportView } from './user-agent-report.view';
-
-
-
-@Global()
-@Module({
-    imports: [TypeOrmModule.forFeature([UserAgentReportView])],
-    providers: [UserAgentReportService],
-    exports: [TypeOrmModule, UserAgentReportService],
-})
-export class UserAgentReportModule { }

src/ORM/_views/user-agent-report/user-agent-report.service.ts

@@ -1,35 +0,0 @@
-import { Injectable } from '@nestjs/common';
-import { InjectRepository } from '@nestjs/typeorm';
-import { Repository } from 'typeorm';
-
-import { UserAgentReportView } from './user-agent-report.view';
-
-@Injectable()
-export class UserAgentReportService {
-
-    constructor(
-        @InjectRepository(UserAgentReportView)
-        private userAgentReport: Repository<UserAgentReportView>,
-    ) {
-
-    }
-
-    public async getReport() {
-        return await this.userAgentReport.find();
-    }
-
-    public async refreshReport() {
-        try {
-            return await this.userAgentReport.query(`
-            COMMIT;
-            BEGIN TRANSACTION ISOLATION LEVEL REPEATABLE READ;
-            REFRESH MATERIALIZED VIEW user_agent_report_view;
-            COMMIT;
-        `);
-        } catch (e) {
-
-            console.log(e)
-        }
-
-    }
-}

src/ORM/_views/user-agent-report/user-agent-report.view.ts

@@ -1,27 +0,0 @@
-import { DataSource, ViewColumn, ViewEntity } from 'typeorm';
-
-import { ClientEntity } from '../../client/client.entity';
-
-@ViewEntity({
-    materialized: true,
-    expression: (dataSource: DataSource) =>
-        dataSource
-            .createQueryBuilder()
-            .select('client.userAgent as "userAgent"')
-            .addSelect('COUNT(client.userAgent)', 'count')
-            .addSelect('MAX(client.bestDifficulty)', 'bestDifficulty')
-            .addSelect('SUM(client.hashRate)', 'totalHashRate')
-            .from(ClientEntity, 'client')
-            .groupBy('client.userAgent')
-            .orderBy('"totalHashRate"', 'DESC')
-})
-export class UserAgentReportView {
-    @ViewColumn()
-    userAgent: string;
-    @ViewColumn()
-    count: string;
-    @ViewColumn()
-    bestDifficulty: number;
-    @ViewColumn()
-    totalHashRate: string;
-}

src/ORM/address-settings/address-settings.entity.ts

@@ -11,14 +11,14 @@ export class AddressSettingsEntity extends TrackedEntity {
     @Column({ default: 0 })
     shares: number;
 
-    @Column({ type: 'decimal', default: 0 })
+    @Column({ type: 'real', default: 0 })
     bestDifficulty: number;
 
-    @Column({ nullable: true })
-    bestDifficultyUserAgent: string;
-
     @Column({ nullable: true })
     miscCoinbaseScriptData: string;
 
+    @Column({ nullable: true })
+    bestDifficultyUserAgent: string;
+
 }
 

src/ORM/address-settings/address-settings.service.ts

@@ -15,17 +15,14 @@ export class AddressSettingsService {
     }
 
     public async getSettings(address: string, createIfNotFound: boolean) {
-        let settings = await this.addressSettingsRepository.findOne({ where: { address } });
-        if (createIfNotFound === true && settings == null) {
-            await this.addressSettingsRepository
-                .createQueryBuilder()
-                .insert()
-                .into(AddressSettingsEntity)
-                .values({ address })
-                .orIgnore()
-                .execute();
-
-            settings = await this.addressSettingsRepository.findOne({ where: { address } });
+        const settings = await this.addressSettingsRepository.findOne({ where: { address } });
+        if (createIfNotFound == true && settings == null) {
+            // It's possible to have a race condition here so if we get a PK violation, fetch it
+            try {
+                return await this.createNew(address);
+            } catch (e) {
+                return await this.addressSettingsRepository.findOne({ where: { address } });
+            }
         }
         return settings;
     }
@@ -52,19 +49,27 @@ export class AddressSettingsService {
             .execute();
     }
 
+    public async getHighScores() {
+        return await this.addressSettingsRepository.createQueryBuilder()
+            .select('"updatedAt", "bestDifficulty", "bestDifficultyUserAgent"')
+            .orderBy('"bestDifficulty"', 'DESC')
+            .limit(10)
+            .execute();
+    }
+
     public async createNew(address: string) {
         return await this.addressSettingsRepository.save({ address });
     }
 
-    // public async addShares(address: string, shares: number) {
-    //     return await this.addressSettingsRepository.createQueryBuilder()
-    //         .update(AddressSettingsEntity)
-    //         .set({
-    //             shares: () => `"shares" + ${shares}` // Use the actual value of shares here
-    //         })
-    //         .where('address = :address', { address })
-    //         .execute();
-    // }
+    public async addShares(address: string, shares: number) {
+        return await this.addressSettingsRepository.createQueryBuilder()
+            .update(AddressSettingsEntity)
+            .set({
+                shares: () => `"shares" + ${shares}` // Use the actual value of shares here
+            })
+            .where('address = :address', { address })
+            .execute();
+    }
 
     public async resetBestDifficultyAndShares() {
         return await this.addressSettingsRepository
@@ -76,12 +81,4 @@ export class AddressSettingsService {
             })
             .execute();
     }
-
-    public async getHighScores() {
-        return await this.addressSettingsRepository.createQueryBuilder()
-            .select('"updatedAt", "bestDifficulty", "bestDifficultyUserAgent"')
-            .orderBy('"bestDifficulty"', 'DESC')
-            .limit(10)
-            .execute();
-    }
 }

src/ORM/blocks/blocks.entity.ts

@@ -1,12 +1,11 @@
-import { Column, Entity } from 'typeorm';
+import { Column, Entity, PrimaryGeneratedColumn } from 'typeorm';
 
-import { PrimaryGeneratedBigIntColumn } from '../utils/PrimaryGeneratedBigIntColumn';
 import { TrackedEntity } from '../utils/TrackedEntity.entity';
 
 @Entity()
 export class BlocksEntity extends TrackedEntity {
 
-    @PrimaryGeneratedBigIntColumn()
+    @PrimaryGeneratedColumn()
     id: number;
 
     @Column()

src/ORM/client-statistics/client-statistics.entity.ts

@@ -1,15 +1,15 @@
-import { Column, Entity, Index, ManyToOne } from 'typeorm';
+import { Column, Entity, Index, PrimaryGeneratedColumn } from 'typeorm';
 
-import { ClientEntity } from '../client/client.entity';
-import { PrimaryGeneratedBigIntColumn } from '../utils/PrimaryGeneratedBigIntColumn';
 import { TrackedEntity } from '../utils/TrackedEntity.entity';
 
 @Entity()
+//Index for getHashRateForSession
+@Index(["address", "clientName", "sessionId"])
 //Index for statistics save
-@Index(["clientId", "time"])
+@Index(["address", "clientName", "sessionId", "time"])
 export class ClientStatisticsEntity extends TrackedEntity {
 
-    @PrimaryGeneratedBigIntColumn()
+    @PrimaryGeneratedColumn()
     id: number;
 
     @Column({ length: 62, type: 'varchar' })
@@ -22,27 +22,14 @@ export class ClientStatisticsEntity extends TrackedEntity {
     sessionId: string;
 
     @Index()
-    @Column({ type: 'bigint' })
+    @Column({ type: 'integer' })
     time: number;
 
-    @Column({ type: 'decimal' })
+    @Column({ type: 'real' })
     shares: number;
 
-    @Column({ default: 0, type: 'bigint' })
+    @Column({ default: 0, type: 'integer' })
     acceptedCount: number;
 
 
-
-    @ManyToOne(
-        () => ClientEntity,
-        clientEntity => clientEntity.statistics,
-        { nullable: false, }
-    )
-    client: ClientEntity;
-
-    @Index()
-    @Column({ name: 'clientId' })
-    public clientId: string;
-
-
 }

src/ORM/client-statistics/client-statistics.service.ts

@@ -1,6 +1,6 @@
 import { Injectable } from '@nestjs/common';
-import { InjectDataSource, InjectRepository } from '@nestjs/typeorm';
-import { DataSource, Repository } from 'typeorm';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
 
 import { ClientStatisticsEntity } from './client-statistics.entity';
 
@@ -8,89 +8,32 @@ import { ClientStatisticsEntity } from './client-statistics.entity';
 @Injectable()
 export class ClientStatisticsService {
 
-    private bulkAsyncUpdates: {
-        [key: string]: Partial<ClientStatisticsEntity>
-    } = {};
-
     constructor(
 
-        @InjectDataSource()
-        private dataSource: DataSource,
+
         @InjectRepository(ClientStatisticsEntity)
         private clientStatisticsRepository: Repository<ClientStatisticsEntity>,
     ) {
 
     }
 
-    // public async update(clientStatistic: Partial<ClientStatisticsEntity>) {
+    public async update(clientStatistic: Partial<ClientStatisticsEntity>) {
 
-    //     await this.clientStatisticsRepository.update({ clientId: clientStatistic.clientId, time: clientStatistic.time },
-    //     {
-    //         shares: clientStatistic.shares,
-    //         acceptedCount: clientStatistic.acceptedCount,
-    //         updatedAt: new Date()
-    //     });
-    // }
+        await this.clientStatisticsRepository.update({
+            address: clientStatistic.address,
+            clientName: clientStatistic.clientName,
+            sessionId: clientStatistic.sessionId,
+            time: clientStatistic.time
+        },
+            {
+                shares: clientStatistic.shares,
+                acceptedCount: clientStatistic.acceptedCount,
+                updatedAt: new Date()
+            });
 
-    public updateBulkAsync(clientStatistic: Partial<ClientStatisticsEntity>) {
-        const key = clientStatistic.clientId + clientStatistic.time.toString();
-        if(this.bulkAsyncUpdates[key] != null){
-            this.bulkAsyncUpdates[key].shares = clientStatistic.shares;
-            this.bulkAsyncUpdates[key].acceptedCount = clientStatistic.acceptedCount;
-            return;
     }
-
-        this.bulkAsyncUpdates[clientStatistic.clientId + clientStatistic.time.toString()] = clientStatistic;
-    }
-
-    public async doBulkAsyncUpdate(){
-        if(Object.keys(this.bulkAsyncUpdates).length < 1){
-            console.log('No client stats to update.')
-            return;
-        }
-
-        // Step 1: Prepare data for bulk update
-        const values = Object.entries(this.bulkAsyncUpdates).map(([key, value]) => {
-            return  `('${value.clientId}', ${value.time}, ${value.shares}, ${value.acceptedCount}, NOW())`
-        }).join(',');
-        
-    
-        const query = `
-            DO $$
-            BEGIN
-                CREATE TEMP TABLE temp_stats (
-                    "clientId" UUID,
-                    time BIGINT,
-                    shares NUMERIC,
-                    "acceptedCount" INT,
-                    "updatedAt" TIMESTAMP
-                ) ON COMMIT DROP;
-    
-                INSERT INTO temp_stats ("clientId", time, shares, "acceptedCount", "updatedAt")
-                VALUES ${values};
-    
-                UPDATE "client_statistics_entity" cse
-                SET shares = ts.shares,
-                    "acceptedCount" = ts."acceptedCount",
-                    "updatedAt" = ts."updatedAt"
-                FROM temp_stats ts
-                WHERE cse."clientId" = ts."clientId" AND cse.time = ts.time;
-            END;
-            $$;
-        `;
-    
-        try {
-            await this.clientStatisticsRepository.query(query);
-            //console.log(`Bulk updated ${Object.keys(this.bulkAsyncUpdates).length} statistics`)
-        } catch (error) {
-            console.error('Bulk update failed:', error.message, query);
-            throw error;
-        }
-
-        this.bulkAsyncUpdates = {};
-    }
-
     public async insert(clientStatistic: Partial<ClientStatisticsEntity>) {
+        // If no rows were updated, insert a new record
         await this.clientStatisticsRepository.insert(clientStatistic);
     }
 
@@ -105,20 +48,18 @@ export class ClientStatisticsService {
             .execute();
     }
 
-
-
-    public async getChartDataForAddress(address: string) {
+    public async getChartDataForSite() {
 
         var yesterday = new Date(new Date().getTime() - (24 * 60 * 60 * 1000));
 
         const query = `
             SELECT
                 time AS label,
-                    (SUM(shares) * 4294967296) / 600 AS data
+                ROUND(((SUM(shares) * 4294967296) / 600)) AS data
             FROM
                 client_statistics_entity AS entry
             WHERE
-                    entry.address = $1 AND entry.time > $2
+                entry.time > ${yesterday.getTime()}
             GROUP BY
                 time
             ORDER BY
@@ -127,10 +68,62 @@ export class ClientStatisticsService {
 
     `;
 
-        const result = await this.clientStatisticsRepository.query(query, [address, yesterday.getTime()]);
+        const result: any[] = await this.clientStatisticsRepository.query(query);
+
 
         return result.map(res => {
-            res.label = new Date(parseInt(res.label)).toISOString();
+            res.label = new Date(res.label).toISOString();
+            return res;
+        }).slice(0, result.length - 1)
+
+    }
+
+
+    // public async getHashRateForAddress(address: string) {
+
+    //     const oneHour = new Date(new Date().getTime() - (60 * 60 * 1000));
+
+    //     const query = `
+    //         SELECT
+    //         SUM(entry.shares) AS difficultySum
+    //         FROM
+    //             client_statistics_entity AS entry
+    //         WHERE
+    //             entry.address = ? AND entry.time > ${oneHour}
+    //     `;
+
+    //     const result = await this.clientStatisticsRepository.query(query, [address]);
+
+    //     const difficultySum = result[0].difficultySum;
+
+    //     return (difficultySum * 4294967296) / (600);
+
+    // }
+
+    public async getChartDataForAddress(address: string) {
+
+        var yesterday = new Date(new Date().getTime() - (24 * 60 * 60 * 1000));
+
+        const query = `
+                SELECT
+                    time label,
+                    (SUM(shares) * 4294967296) / 600 AS data
+                FROM
+                    client_statistics_entity AS entry
+                WHERE
+                    entry.address = ? AND entry.time > ${yesterday.getTime()}
+                GROUP BY
+                    time
+                ORDER BY
+                    time
+                LIMIT 144;
+
+        `;
+
+        const result = await this.clientStatisticsRepository.query(query, [address]);
+
+        return result.map(res => {
+            res.label = new Date(res.label).toISOString();
             return res;
         }).slice(0, result.length - 1);
 
@@ -148,7 +141,7 @@ export class ClientStatisticsService {
             FROM
                 client_statistics_entity AS entry
             WHERE
-                entry.address = $1 AND entry.clientName = $2 AND entry.time > ${oneHour.getTime()}
+                entry.address = ? AND entry.clientName = ? AND entry.time > ${oneHour.getTime()}
         `;
 
         const result = await this.clientStatisticsRepository.query(query, [address, clientName]);
@@ -165,12 +158,12 @@ export class ClientStatisticsService {
 
         const query = `
             SELECT
-                time AS label,
+                time label,
                 (SUM(shares) * 4294967296) / 600 AS data
             FROM
                 client_statistics_entity AS entry
             WHERE
-                entry.address = $1 AND entry."clientName" = $2 AND entry.time > ${yesterday.getTime()}
+                entry.address = ? AND entry.clientName = ? AND entry.time > ${yesterday.getTime()}
             GROUP BY
                 time
             ORDER BY
@@ -181,7 +174,7 @@ export class ClientStatisticsService {
         const result = await this.clientStatisticsRepository.query(query, [address, clientName]);
 
         return result.map(res => {
-            res.label = new Date(parseInt(res.label)).toISOString();
+            res.label = new Date(res.label).toISOString();
             return res;
         }).slice(0, result.length - 1);
 
@@ -189,59 +182,59 @@ export class ClientStatisticsService {
     }
 
 
-    // public async getHashRateForSession(clientId: string) {
+    public async getHashRateForSession(address: string, clientName: string, sessionId: string) {
 
-    //     const query = `
-    //         SELECT
-    //             "createdAt",
-    //             "updatedAt",
-    //             shares
-    //         FROM
-    //             client_statistics_entity AS entry
-    //         WHERE
-    //             entry."clientId" = $1
-    //         ORDER BY time DESC
-    //         LIMIT 2;
-    //     `;
+        const query = `
+            SELECT
+                createdAt,
+                updatedAt,
+                shares
+            FROM
+                client_statistics_entity AS entry
+            WHERE
+                entry.address = ? AND entry.clientName = ? AND entry.sessionId = ?
+            ORDER BY time DESC
+            LIMIT 2;
+        `;
 
-    //     const result = await this.clientStatisticsRepository.query(query, [clientId]);
+        const result = await this.clientStatisticsRepository.query(query, [address, clientName, sessionId]);
 
-    //     if (result.length < 1) {
-    //         return 0;
-    //     }
+        if (result.length < 1) {
+            return 0;
+        }
 
-    //     const latestStat = result[0];
+        const latestStat = result[0];
 
-    //     if (result.length < 2) {
-    //         const time = new Date(latestStat.updatedAt).getTime() - new Date(latestStat.createdAt).getTime();
-    //         // 1min
-    //         if (time < 1000 * 60) {
-    //             return 0;
-    //         }
-    //         return (parseFloat(latestStat.shares) * 4294967296) / (time / 1000);
-    //     } else {
-    //         const secondLatestStat = result[1];
-    //         const time = new Date(latestStat.updatedAt).getTime() - new Date(secondLatestStat.createdAt).getTime();
-    //         // 1min
-    //         if (time < 1000 * 60) {
-    //             return 0;
-    //         }
-    //         return ((parseFloat(latestStat.shares) + parseFloat(secondLatestStat.shares)) * 4294967296) / (time / 1000);
-    //     }
+        if (result.length < 2) {
+            const time = new Date(latestStat.updatedAt).getTime() - new Date(latestStat.createdAt).getTime();
+            // 1min
+            if (time < 1000 * 60) {
+                return 0;
+            }
+            return (latestStat.shares * 4294967296) / (time / 1000);
+        } else {
+            const secondLatestStat = result[1];
+            const time = new Date(latestStat.updatedAt).getTime() - new Date(secondLatestStat.createdAt).getTime();
+            // 1min
+            if (time < 1000 * 60) {
+                return 0;
+            }
+            return ((latestStat.shares + secondLatestStat.shares) * 4294967296) / (time / 1000);
+        }
 
-    // }
+    }
 
-    public async getChartDataForSession(clientId: string) {
+    public async getChartDataForSession(address: string, clientName: string, sessionId: string) {
         var yesterday = new Date(new Date().getTime() - (24 * 60 * 60 * 1000));
 
         const query = `
             SELECT
-                time AS label,
+                time label,
                 (SUM(shares) * 4294967296) / 600 AS data
             FROM
                 client_statistics_entity AS entry
             WHERE
-                entry."clientId" = $1 AND entry.time > ${yesterday.getTime()}
+                entry.address = ? AND entry.clientName = ? AND entry.sessionId = ? AND entry.time > ${yesterday.getTime()}
             GROUP BY
                 time
             ORDER BY
@@ -249,10 +242,10 @@ export class ClientStatisticsService {
             LIMIT 144;
         `;
 
-        const result = await this.clientStatisticsRepository.query(query, [clientId]);
+        const result = await this.clientStatisticsRepository.query(query, [address, clientName, sessionId]);
 
         return result.map(res => {
-            res.label = new Date(parseInt(res.label)).toISOString();
+            res.label = new Date(res.label).toISOString();
             return res;
         }).slice(0, result.length - 1);
 

src/ORM/client/client.entity.ts

@@ -1,28 +1,25 @@
-import { Column, Entity, Index, OneToMany, PrimaryGeneratedColumn } from 'typeorm';
+import { Column, Entity, Index, PrimaryColumn } from 'typeorm';
 
-import { ClientStatisticsEntity } from '../client-statistics/client-statistics.entity';
+import { DateTimeTransformer } from '../utils/DateTimeTransformer';
 import { TrackedEntity } from '../utils/TrackedEntity.entity';
 
+//https://www.sqlite.org/withoutrowid.html
 
-@Entity()
-@Index("IDX_unique_nonce", { synchronize: false })
-@Index('idx_client_cleanup', ['id'], {
-    where: '"deletedAt" IS NULL',
-    // This is a partial (filtered) index — only indexes active clients
-})
+//The WITHOUT ROWID optimization is likely to be helpful for tables that have non-integer
+// or composite (multi-column) PRIMARY KEYs and that do not store large strings or BLOBs.
+//WITHOUT ROWID tables work best when individual rows are not too large.
+@Entity({ withoutRowid: true })
+@Index(['address', 'clientName', 'sessionId'], { unique: true })
 export class ClientEntity extends TrackedEntity {
 
-    @PrimaryGeneratedColumn('uuid')
-    id: string;
 
-    @Index()
-    @Column({ length: 62, type: 'varchar' })
+    @PrimaryColumn({ length: 62, type: 'varchar' })
     address: string;
 
-    @Column({ length: 64, type: 'varchar' })
+    @PrimaryColumn({ length: 64, type: 'varchar' })
     clientName: string;
 
-    @Column({ length: 8, type: 'varchar', })
+    @PrimaryColumn({ length: 8, type: 'varchar' })
     sessionId: string;
 
 
@@ -30,19 +27,15 @@ export class ClientEntity extends TrackedEntity {
     userAgent: string;
 
 
-    @Column()
+
+    @Column({ type: 'datetime', transformer: new DateTimeTransformer() })
     startTime: Date;
 
-    @Column({ type: 'decimal', default: 0 })
+    @Column({ type: 'real', default: 0 })
     bestDifficulty: number
 
-    @Column({ default: 0, type: 'decimal' })
+    @Column({ default: 0 })
     hashRate: number;
 
-    @OneToMany(
-        () => ClientStatisticsEntity,
-        clientStatisticsEntity => clientStatisticsEntity.client
-    )
-    statistics: ClientStatisticsEntity[]
-
 }
+

src/ORM/client/client.service.ts

@@ -1,6 +1,8 @@
 import { Injectable } from '@nestjs/common';
-import { InjectDataSource, InjectRepository } from '@nestjs/typeorm';
-import { DataSource, Repository } from 'typeorm';
+import { Interval } from '@nestjs/schedule';
+import { InjectRepository } from '@nestjs/typeorm';
+import { firstValueFrom, Subject } from 'rxjs';
+import { ObjectLiteral, Repository } from 'typeorm';
 
 import { ClientEntity } from './client.entity';
 
@@ -9,119 +11,80 @@ import { ClientEntity } from './client.entity';
 @Injectable()
 export class ClientService {
 
-    private heartbeatBulkUpdate: { [id: string]: { id: string, hashRate: number, updatedAt: Date } } = {};
+
+    public insertQueue: { result: Subject<ObjectLiteral>, partialClient: Partial<ClientEntity> }[] = [];
+
 
     constructor(
-        @InjectDataSource()
-        private dataSource: DataSource,
         @InjectRepository(ClientEntity)
         private clientRepository: Repository<ClientEntity>
     ) {
 
     }
 
-    // client.service.ts
-    public async killDeadClients(): Promise<boolean> {
-        const BATCH_SIZE = 10000;
+    @Interval(1000 * 5)
+    public async insertClients() {
+        const queueCopy = [...this.insertQueue];
+        this.insertQueue = [];
 
-        return this.dataSource.transaction('READ COMMITTED', async (manager) => {  // ← CHANGE HERE
-            const deadClients: { id: string }[] = await manager.query(`
-                SELECT id
-                FROM client_entity
-                WHERE "deletedAt" IS NULL
-                  AND "updatedAt" < NOW() - INTERVAL '5 minutes'
-                ORDER BY id
-                LIMIT $1
-                FOR UPDATE SKIP LOCKED
-            `, [BATCH_SIZE]);
-
-            if (deadClients.length === 0) {
-                return false;
-            }
-
-            await manager
-                .createQueryBuilder()
-                .update(ClientEntity)
-                .set({ deletedAt: () => 'NOW()' })
-                .whereInIds(deadClients.map(c => c.id))
-                .execute();
-
-            console.log(`Killed ${deadClients.length} dead clients`);
-
-            return true;
-        });
-    }
-
-    //public async heartbeat(id, hashRate: number, updatedAt: Date) {
-    //     return await this.clientRepository.update({ id }, { hashRate, deletedAt: null, updatedAt });
-    // }
-
-    public heartbeatBulkAsync(id, hashRate: number, updatedAt: Date) {
-        if (this.heartbeatBulkUpdate[id] != null) {
-            this.heartbeatBulkUpdate[id].hashRate = hashRate;
-            this.heartbeatBulkUpdate[id].updatedAt = updatedAt;
+        if (queueCopy.length === 0) {
             return;
         }
-        this.heartbeatBulkUpdate[id] = { id, hashRate, updatedAt };
-    }
-
-    public async doBulkHeartbeatUpdate() {
-        if (Object.keys(this.heartbeatBulkUpdate).length < 1) {
-            console.log('No heartbeats to update.')
-            return;
-        }
-
-        const values = Object.entries(this.heartbeatBulkUpdate).map(([key, value]) => {
-            return `('${value.id}', ${value.hashRate}, NOW())`
-        }).join(',');
-
-        const query = `
-            DO $$
-            BEGIN
-                CREATE TEMP TABLE temp_heartbeats (
-                    id UUID,
-                    "hashRate" DECIMAL,
-                    "updatedAt" TIMESTAMP
-                ) ON COMMIT DROP;
-
-                INSERT INTO temp_heartbeats (id, "hashRate", "updatedAt")
-                VALUES ${values};
-
-                UPDATE "client_entity" ce
-                SET "hashRate" = th."hashRate",
-                    "deletedAt" = NULL,
-                    "updatedAt" = th."updatedAt"
-                FROM temp_heartbeats th
-                WHERE ce.id = th.id;
-            END;
-            $$;
-        `;
 
         try {
-            await this.clientRepository.query(query);
-            console.log(`Bulk updated ${Object.keys(this.heartbeatBulkUpdate).length} client heartbeats`);
-        } catch (error) {
-            console.error('Bulk heartbeat failed:', error.message, 'Query:', query);
-            throw error;
+            const results = await this.clientRepository.insert(queueCopy.map(c => c.partialClient));
+
+            queueCopy.forEach((c, index) => {
+                c.result.next(results.generatedMaps[index]);
+                c.result.complete();
+            });
+        } catch (e) {
+            queueCopy.forEach(c => c.result.error(e));
+            throw e;
+        }
     }
 
-        this.heartbeatBulkUpdate = {};
+    public async killDeadClients() {
+        var fiveMinutes = new Date(new Date().getTime() - (5 * 60 * 1000)).toISOString();
+
+        return await this.clientRepository
+            .createQueryBuilder()
+            .update(ClientEntity)
+            .set({ deletedAt: () => "DATETIME('now')" })
+            .where("deletedAt IS NULL AND updatedAt < DATETIME(:fiveMinutes)", { fiveMinutes })
+            .execute();
     }
 
+    public async heartbeat(address: string, clientName: string, sessionId: string, hashRate: number, updatedAt: Date) {
+        return await this.clientRepository.update({ address, clientName, sessionId }, { hashRate, deletedAt: null, updatedAt });
+    }
+
+    // public async save(client: Partial<ClientEntity>) {
+    //     return await this.clientRepository.save(client);
+    // }
+
 
     public async insert(partialClient: Partial<ClientEntity>): Promise<ClientEntity> {
-        const insertResult = await this.clientRepository.insert(partialClient);
+
+        const result = new Subject<ObjectLiteral>();
+
+        this.insertQueue.push({ result, partialClient });
+
+
+        //  const insertResult = await this.clientRepository.insert(partialClient);
+
+        const generatedMap = await firstValueFrom(result);
 
         const client = {
             ...partialClient,
-            ...insertResult.generatedMaps[0]
+            ...generatedMap
         };
 
         return client as ClientEntity;
     }
 
-    public async delete(id: string) {
-        return await this.clientRepository.softDelete({ id });
+    public async delete(sessionId: string) {
+        return await this.clientRepository.softDelete({ sessionId });
     }
 
     public async deleteOldClients() {
@@ -137,16 +100,16 @@ export class ClientService {
 
     }
 
-    public async updateBestDifficulty(id: string, bestDifficulty: number) {
-        return await this.clientRepository.update({ id }, { bestDifficulty });
+    public async updateBestDifficulty(sessionId: string, bestDifficulty: number) {
+        return await this.clientRepository.update({ sessionId }, { bestDifficulty });
     }
 
-    public async updateBestDifficultyIfHigher(id: string, bestDifficulty: number) {
+    public async updateBestDifficultyIfHigher(sessionId: string, bestDifficulty: number) {
         return await this.clientRepository
             .createQueryBuilder()
             .update(ClientEntity)
             .set({ bestDifficulty })
-            .where('id = :id', { id })
+            .where('sessionId = :sessionId', { sessionId })
             .andWhere('"bestDifficulty" < :bestDifficulty', { bestDifficulty })
             .execute();
     }
@@ -190,16 +153,16 @@ export class ClientService {
             .execute();
     }
 
-    // public async getUserAgents() {
-    //     const result = await this.clientRepository.createQueryBuilder('client')
-    //         .select('client.userAgent as "userAgent"')
-    //         .addSelect('COUNT(client.userAgent)', 'count')
-    //         .addSelect('MAX(client.bestDifficulty)', 'bestDifficulty')
-    //         .addSelect('SUM(client.hashRate)', 'totalHashRate')
-    //         .groupBy('client.userAgent')
-    //         .orderBy('"totalHashRate"', 'DESC')
-    //         .getRawMany();
-    //     return result;
-    // }
+    public async getUserAgents() {
+        const result = await this.clientRepository.createQueryBuilder('client')
+            .select('client.userAgent as userAgent')
+            .addSelect('COUNT(client.userAgent)', 'count')
+            .addSelect('MAX(client.bestDifficulty)', 'bestDifficulty')
+            .addSelect('SUM(client.hashRate)', 'totalHashRate')
+            .groupBy('client.userAgent')
+            .orderBy('count', 'DESC')
+            .getRawMany();
+        return result;
+    }
 
 }

src/ORM/external-shares/external-shares.entity.ts

@@ -0,0 +1,30 @@
+import { Column, Entity, Index, PrimaryGeneratedColumn } from 'typeorm';
+import { TrackedEntity } from '../utils/TrackedEntity.entity';
+
+@Entity()
+@Index(['address', 'time'])
+export class ExternalSharesEntity extends TrackedEntity {
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column({ length: 62, type: 'varchar' })
+    address: string;
+
+    @Column()
+    clientName: string;
+
+    @Column({ type: 'integer' })
+    time: number;
+
+    @Column({ type: 'real' })
+    difficulty: number;
+
+    @Column({ length: 128, type: 'varchar', nullable: true })
+    userAgent: string;
+
+    @Column({ length: 128, type: 'varchar', nullable: true })
+    externalPoolName: string;
+
+    @Column()
+    header: string;
+}

src/ORM/external-shares/external-shares.module.ts

@@ -0,0 +1,13 @@
+import { Global, Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+
+import { ExternalSharesEntity } from './external-shares.entity';
+import { ExternalSharesService } from './external-shares.service';
+
+@Global()
+@Module({
+    imports: [TypeOrmModule.forFeature([ExternalSharesEntity])],
+    providers: [ExternalSharesService],
+    exports: [TypeOrmModule, ExternalSharesService],
+})
+export class ExternalSharesModule { } 

src/ORM/external-shares/external-shares.service.ts

@@ -0,0 +1,52 @@
+import { Injectable } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import { ExternalSharesEntity } from './external-shares.entity';
+
+@Injectable()
+export class ExternalSharesService {
+    constructor(
+        @InjectRepository(ExternalSharesEntity)
+        private externalSharesRepository: Repository<ExternalSharesEntity>
+    ) {}
+
+    public async insert(externalShare: Partial<ExternalSharesEntity>) {
+        return await this.externalSharesRepository.insert(externalShare);
+    }
+
+    public async getTopDifficulties(): Promise<Array<{userAgent: string, time: number, externalPoolName: string, difficulty: number}>> {
+        return await this.externalSharesRepository
+            .createQueryBuilder('share')
+            .select('share.userAgent', 'userAgent')
+            .addSelect('share.time', 'time')
+            .addSelect('share.externalPoolName', 'externalPoolName')
+            .addSelect('MAX(share.difficulty)', 'difficulty')
+            .groupBy('share.address')
+            .orderBy('MAX(share.difficulty)', 'DESC')
+            .limit(10)
+            .getRawMany();
+    }
+
+    public async getAddressBestDifficulty(address: string): Promise<number> {
+        const result = await this.externalSharesRepository
+            .createQueryBuilder()
+            .select('MAX(difficulty)', 'maxDifficulty')
+            .where('address = :address', { address })
+            .getRawOne();
+        return result?.maxDifficulty || 0;
+    }
+
+    public async deleteOldShares() {
+        const oneDayAgo = new Date(Date.now() - 24 * 60 * 60 * 1000);
+        return await this.externalSharesRepository
+            .createQueryBuilder()
+            .delete()
+            .from(ExternalSharesEntity)
+            .where('time < :time', { time: oneDayAgo.getTime() })
+            .execute();
+    }
+
+    public async deleteAll() {
+        return await this.externalSharesRepository.delete({});
+    }
+}

src/ORM/home-graph/home-graph.entity.ts

@@ -1,16 +0,0 @@
-import { Column, Entity } from 'typeorm';
-
-import { PrimaryGeneratedBigIntColumn } from '../utils/PrimaryGeneratedBigIntColumn';
-
-@Entity()
-export class HomeGraphEntity {
-
-    @PrimaryGeneratedBigIntColumn()
-    id: number;
-
-    @Column({ type: 'bigint' })
-    label: number;
-
-    @Column({ type: 'bigint' })
-    data: number;
-}

src/ORM/home-graph/home-graph.module.ts

@@ -1,15 +0,0 @@
-import { Global, Module } from '@nestjs/common';
-import { TypeOrmModule } from '@nestjs/typeorm';
-
-import { HomeGraphEntity } from './home-graph.entity';
-import { HomeGraphService } from './home-graph.service';
-
-
-
-@Global()
-@Module({
-    imports: [TypeOrmModule.forFeature([HomeGraphEntity])],
-    providers: [HomeGraphService],
-    exports: [TypeOrmModule, HomeGraphService],
-})
-export class HomeGraphModule { }

src/ORM/home-graph/home-graph.service.ts

@@ -1,45 +0,0 @@
-import { Injectable } from '@nestjs/common';
-import { InjectRepository } from '@nestjs/typeorm';
-import { Repository } from 'typeorm';
-
-import { HomeGraphEntity } from './home-graph.entity';
-
-@Injectable()
-export class HomeGraphService {
-    constructor(
-        @InjectRepository(HomeGraphEntity) private homeGraphRepository: Repository<HomeGraphEntity>
-    ) {
-
-    }
-
-    public async getLatestTime(): Promise<Date> {
-        const result = await this.homeGraphRepository.createQueryBuilder('entity')
-            .select('MAX(entity.label)', 'maxNumber')
-            .getRawOne();
-
-        if (result.maxNumber == null) {
-            return new Date(new Date().getTime() - (24 * 60 * 60 * 1000));
-        }
-
-        return new Date(parseInt(result.maxNumber));
-    }
-
-    public async save(graph: { label: number, data: number }[]) {
-        await this.homeGraphRepository.insert(graph);
-    }
-
-    public async getChartDataForSite(limit: number = 144 * 7) {
-        const records = await this.homeGraphRepository
-            .createQueryBuilder('homeGraph')
-            .orderBy('homeGraph.id', 'DESC')
-            .limit(limit)
-            .getRawMany();
-
-        return records.map(res => {
-            return {
-                label: new Date(parseInt(res.homeGraph_label)).toISOString(),
-                data: res.homeGraph_data
-            }
-        });
-    }
-}

src/ORM/rpc-block/rpc-block.entity.ts

@@ -6,6 +6,9 @@ export class RpcBlockEntity {
     @PrimaryColumn()
     blockHeight: number;
 
+    @Column({ nullable: true })
+    lockedBy?: string;
+
     @Column({ nullable: true })
     data?: string;
 }

src/ORM/rpc-block/rpc-block.service.ts

@@ -1,6 +1,6 @@
 import { Injectable } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
-import { InsertResult, Repository } from 'typeorm';
+import { Repository } from 'typeorm';
 
 import { RpcBlockEntity } from './rpc-block.entity';
 
@@ -12,14 +12,18 @@ export class RpcBlockService {
     ) {
 
     }
-    public getSavedBlockTemplate(blockHeight: number) {
+    public getBlock(blockHeight: number) {
         return this.rpcBlockRepository.findOne({
             where: { blockHeight }
         });
     }
 
-    public saveBlock(blockHeight: number, data: string): Promise<InsertResult> {
-        return this.rpcBlockRepository.upsert({ blockHeight, data }, ['blockHeight']);
+    public lockBlock(blockHeight: number, process: string) {
+        return this.rpcBlockRepository.save({ blockHeight, data: null, lockedBy: process });
+    }
+
+    public saveBlock(blockHeight: number, data: string) {
+        return this.rpcBlockRepository.update(blockHeight, { data })
     }
 
     public async deleteOldBlocks() {

src/ORM/telegram-subscriptions/telegram-subscriptions.entity.ts

@@ -1,12 +1,11 @@
-import { Column, Entity, Index } from 'typeorm';
+import { Column, Entity, Index, PrimaryGeneratedColumn } from 'typeorm';
 
-import { PrimaryGeneratedBigIntColumn } from '../utils/PrimaryGeneratedBigIntColumn';
 import { TrackedEntity } from '../utils/TrackedEntity.entity';
 
 @Entity()
 export class TelegramSubscriptionsEntity extends TrackedEntity {
 
-    @PrimaryGeneratedBigIntColumn()
+    @PrimaryGeneratedColumn()
     id: number;
 
     @Index()

src/ORM/utils/DateTimeTransformer.spec.ts

@@ -1,38 +0,0 @@
-import { DateTimeTransformer } from './DateTimeTransformer';
-
-describe('DateTimeTransformer', () => {
-    const transformer = new DateTimeTransformer();
-
-    it('should pass Date values through as Date instances', () => {
-        const date = new Date('2026-05-06T12:00:00.000Z');
-
-        expect(transformer.to(date)).toBe(date);
-        expect(transformer.from(date)).toBe(date);
-    });
-
-    it('should parse ISO strings from the database', () => {
-        const date = transformer.from('2026-05-06T12:00:00.000Z');
-
-        expect(date).toBeInstanceOf(Date);
-        expect((date as Date).toISOString()).toBe('2026-05-06T12:00:00.000Z');
-    });
-
-    it('should parse legacy locale strings', () => {
-        const usDate = transformer.from('5/6/2026, 1:02:03 PM') as Date;
-        const europeanDate = transformer.from('6.5.2026, 13:02:03') as Date;
-
-        expect(usDate.getFullYear()).toBe(2026);
-        expect(usDate.getMonth()).toBe(4);
-        expect(usDate.getDate()).toBe(6);
-        expect(usDate.getHours()).toBe(13);
-        expect(europeanDate.getFullYear()).toBe(2026);
-        expect(europeanDate.getMonth()).toBe(4);
-        expect(europeanDate.getDate()).toBe(6);
-        expect(europeanDate.getHours()).toBe(13);
-    });
-
-    it('should preserve null and undefined values', () => {
-        expect(transformer.to(null)).toBeNull();
-        expect(transformer.from(undefined)).toBeUndefined();
-    });
-});

src/ORM/utils/DateTimeTransformer.ts

@@ -1,113 +1,14 @@
 import { ValueTransformer } from 'typeorm';
 
-const EUROPEAN_LOCALE_REGEX =
-    /^(\d{1,2})\.(\d{1,2})\.(\d{4}),\s*(\d{1,2}):(\d{2})(?::(\d{2}))?(?:\s*(AM|PM))?$/i;
-const US_LOCALE_REGEX =
-    /^(\d{1,2})\/(\d{1,2})\/(\d{4}),\s*(\d{1,2}):(\d{2})(?::(\d{2}))?\s*(AM|PM)$/i;
-
-function parseLegacyLocaleString(value: string): Date | null {
-    const trimmed = value.trim();
-
-    const matchEuropean = trimmed.match(EUROPEAN_LOCALE_REGEX);
-    if (matchEuropean) {
-        const [, day, month, year, hours, minutes, seconds = '0', meridiem] = matchEuropean;
-        return buildDateFromParts({
-            year,
-            month,
-            day,
-            hours,
-            minutes,
-            seconds,
-            meridiem,
-        });
+export class DateTimeTransformer implements ValueTransformer {
+    to(value: Date): any {
+        // Convert the local time to UTC before saving to the database
+        const utcTime = value?.toLocaleString();
+        return utcTime;
     }
 
-    const matchUs = trimmed.match(US_LOCALE_REGEX);
-    if (matchUs) {
-        const [, month, day, year, hours, minutes, seconds = '0', meridiem] = matchUs;
-        return buildDateFromParts({
-            year,
-            month,
-            day,
-            hours,
-            minutes,
-            seconds,
-            meridiem,
-        });
-    }
-
-    return null;
-}
-
-function buildDateFromParts({
-    year,
-    month,
-    day,
-    hours,
-    minutes,
-    seconds,
-    meridiem,
-}: {
-    year: string;
-    month: string;
-    day: string;
-    hours: string;
-    minutes: string;
-    seconds: string;
-    meridiem?: string;
-}): Date {
-    let hourValue = Number(hours);
-    if (meridiem) {
-        const normalized = meridiem.toUpperCase();
-        if (normalized === 'PM' && hourValue < 12) {
-            hourValue += 12;
-        } else if (normalized === 'AM' && hourValue === 12) {
-            hourValue = 0;
-        }
-    }
-
-    return new Date(
-        Number(year),
-        Number(month) - 1,
-        Number(day),
-        hourValue,
-        Number(minutes),
-        Number(seconds),
-    );
-}
-
-function normalizeDate(value: Date | string): Date {
-    if (value instanceof Date) {
+    from(value: any): Date {
+        // Convert the UTC time from the database to the local time zone
         return value;
     }
-
-    const legacyDate = parseLegacyLocaleString(value);
-    if (legacyDate) {
-        return legacyDate;
-    }
-
-    const date = new Date(value);
-    if (!Number.isNaN(date.getTime())) {
-        return date;
-    }
-
-    throw new Error(`Invalid date value received: ${value}`);
-}
-
-export class DateTimeTransformer implements ValueTransformer {
-    to(value: Date | string | null | undefined): Date | null | undefined {
-        if (value === null || value === undefined) {
-            return value === undefined ? undefined : null;
-        }
-
-        return normalizeDate(value);
-    }
-
-    from(value: Date | string | null | undefined): Date | null | undefined {
-        if (value === null || value === undefined) {
-            return value === undefined ? undefined : null;
-        }
-
-        return normalizeDate(value);
-    }
 }

src/ORM/utils/PrimaryGeneratedBigIntColumn.ts

@@ -1,5 +0,0 @@
-import { PrimaryGeneratedColumn } from 'typeorm';
-
-export const PrimaryGeneratedBigIntColumn = () => PrimaryGeneratedColumn({
-    type: process.env.NODE_ENV === 'test' ? 'integer' : 'bigint'
-});

src/ORM/utils/TrackedEntity.entity.ts

@@ -1,12 +1,14 @@
 import { CreateDateColumn, DeleteDateColumn, UpdateDateColumn } from 'typeorm';
 
+import { DateTimeTransformer } from './DateTimeTransformer';
+
 export abstract class TrackedEntity {
-    @DeleteDateColumn({ nullable: true })
+    @DeleteDateColumn({ nullable: true, type: 'datetime', transformer: new DateTimeTransformer() })
     public deletedAt?: Date;
 
-    @CreateDateColumn()
+    @CreateDateColumn({ type: 'datetime', transformer: new DateTimeTransformer() })
     public createdAt?: Date
 
-    @UpdateDateColumn()
+    @UpdateDateColumn({ type: 'datetime', transformer: new DateTimeTransformer() })
     public updatedAt?: Date
 }

src/app.controller.ts

@@ -3,14 +3,11 @@ import { Controller, Get, Inject } from '@nestjs/common';
 import { Cache } from 'cache-manager';
 import { firstValueFrom } from 'rxjs';
 
-import { UserAgentReportService } from './ORM/_views/user-agent-report/user-agent-report.service';
 import { AddressSettingsService } from './ORM/address-settings/address-settings.service';
 import { BlocksService } from './ORM/blocks/blocks.service';
 import { ClientStatisticsService } from './ORM/client-statistics/client-statistics.service';
 import { ClientService } from './ORM/client/client.service';
-import { HomeGraphService } from './ORM/home-graph/home-graph.service';
 import { BitcoinRpcService } from './services/bitcoin-rpc.service';
-import { UserAgentReportView } from './ORM/_views/user-agent-report/user-agent-report.view';
 
 @Controller()
 export class AppController {
@@ -23,9 +20,7 @@ export class AppController {
     private readonly clientStatisticsService: ClientStatisticsService,
     private readonly blocksService: BlocksService,
     private readonly bitcoinRpcService: BitcoinRpcService,
-    private readonly homeGraphService: HomeGraphService,
     private readonly addressSettingsService: AddressSettingsService,
-    private readonly userAgentReportService: UserAgentReportService
   ) { }
 
   @Get('info')
@@ -41,33 +36,9 @@ export class AppController {
 
 
     const blockData = await this.blocksService.getFoundBlocks();
+    const userAgents = await this.clientService.getUserAgents();
     const highScores = await this.addressSettingsService.getHighScores();
 
-    const other: {
-      count: number,
-      bestDifficulty: number,
-      totalHashRate: number;
-    } = {
-      count: 0,
-      bestDifficulty: 0,
-      totalHashRate: 0
-    };
-    const userAgents: UserAgentReportView[] = (await this.userAgentReportService.getReport()).reduce((pre, cur, idx, arr) => {
-      // If less than 10Th/s and less than 100 devices, add to 'other'
-      if (parseInt(cur.totalHashRate) < 10000000000000 && parseInt(cur.count) < 200) {
-        other.totalHashRate += parseFloat(cur.totalHashRate);
-        other.count += parseInt(cur.count);
-        if (other.bestDifficulty < cur.bestDifficulty) {
-          other.bestDifficulty = cur.bestDifficulty;
-        }
-      } else {
-        pre.push(cur);
-      }
-      return pre;
-    }, []);
-
-    userAgents.push({ userAgent: 'Other', count: other.count.toString(), bestDifficulty: other.bestDifficulty, totalHashRate: other.totalHashRate.toString() })
-
     const data = {
       blockData,
       userAgents,
@@ -75,8 +46,8 @@ export class AppController {
       uptime: this.uptime
     };
 
-    //5 min
-    await this.cacheManager.set(CACHE_KEY, data, 5 * 60 * 1000);
+    //1 min
+    await this.cacheManager.set(CACHE_KEY, data, 1 * 60 * 1000);
 
     return data;
 
@@ -92,11 +63,11 @@ export class AppController {
       return cachedResult;
     }
 
-    const userAgents = await this.userAgentReportService.getReport();
 
+    const userAgents = await this.clientService.getUserAgents();
     const totalHashRate = userAgents.reduce((acc, userAgent) => acc + parseFloat(userAgent.totalHashRate), 0);
-    const totalMiners = userAgents.reduce((acc, userAgent) => acc + parseFloat(userAgent.count), 0);
-    const blockHeight = this.bitcoinRpcService.miningInfo.blocks;
+    const totalMiners = userAgents.reduce((acc, userAgent) => acc + parseInt(userAgent.count), 0);
+    const blockHeight = (await firstValueFrom(this.bitcoinRpcService.newBlock$)).blocks;
     const blocksFound = await this.blocksService.getFoundBlocks();
 
     const data = {
@@ -115,7 +86,8 @@ export class AppController {
 
   @Get('network')
   public async network() {
-    return this.bitcoinRpcService.miningInfo;
+    const miningInfo = await firstValueFrom(this.bitcoinRpcService.newBlock$);
+    return miningInfo;
   }
 
   @Get('info/chart')
@@ -129,7 +101,7 @@ export class AppController {
       return cachedResult;
     }
 
-    const chartData = await this.homeGraphService.getChartDataForSite();
+    const chartData = await this.clientStatisticsService.getChartDataForSite();
 
     //10 min
     await this.cacheManager.set(CACHE_KEY, chartData, 10 * 60 * 1000);

src/app.module.ts

@@ -1,7 +1,7 @@
 import { HttpModule } from '@nestjs/axios';
 import { CacheModule } from '@nestjs/cache-manager';
 import { Module } from '@nestjs/common';
-import { ConfigModule, ConfigService } from '@nestjs/config';
+import { ConfigModule } from '@nestjs/config';
 import { ScheduleModule } from '@nestjs/schedule';
 import { TypeOrmModule } from '@nestjs/typeorm';
 
@@ -9,22 +9,11 @@ import { AppController } from './app.controller';
 import { AddressController } from './controllers/address/address.controller';
 import { ClientController } from './controllers/client/client.controller';
 import { BitcoinAddressValidator } from './models/validators/bitcoin-address.validator';
-import { UniqueNonceIndex } from './ORM/_migrations/UniqueNonceIndex';
-import { UserAgentReportModule } from './ORM/_views/user-agent-report/user-agent-report.module';
-import { UserAgentReportView } from './ORM/_views/user-agent-report/user-agent-report.view';
-import { AddressSettingsEntity } from './ORM/address-settings/address-settings.entity';
 import { AddressSettingsModule } from './ORM/address-settings/address-settings.module';
-import { BlocksEntity } from './ORM/blocks/blocks.entity';
 import { BlocksModule } from './ORM/blocks/blocks.module';
-import { ClientStatisticsEntity } from './ORM/client-statistics/client-statistics.entity';
 import { ClientStatisticsModule } from './ORM/client-statistics/client-statistics.module';
-import { ClientEntity } from './ORM/client/client.entity';
 import { ClientModule } from './ORM/client/client.module';
-import { HomeGraphEntity } from './ORM/home-graph/home-graph.entity';
-import { HomeGraphModule } from './ORM/home-graph/home-graph.module';
-import { RpcBlockEntity } from './ORM/rpc-block/rpc-block.entity';
 import { RpcBlocksModule } from './ORM/rpc-block/rpc-block.module';
-import { TelegramSubscriptionsEntity } from './ORM/telegram-subscriptions/telegram-subscriptions.entity';
 import { TelegramSubscriptionsModule } from './ORM/telegram-subscriptions/telegram-subscriptions.module';
 import { AppService } from './services/app.service';
 import { BitcoinRpcService } from './services/bitcoin-rpc.service';
@@ -35,7 +24,9 @@ import { NotificationService } from './services/notification.service';
 import { StratumV1JobsService } from './services/stratum-v1-jobs.service';
 import { StratumV1Service } from './services/stratum-v1.service';
 import { TelegramService } from './services/telegram.service';
-
+import { ExternalSharesService } from './services/external-shares.service';
+import { ExternalShareController } from './controllers/external-share/external-share.controller';
+import { ExternalSharesModule } from './ORM/external-shares/external-shares.module';
 
 const ORMModules = [
     ClientStatisticsModule,
@@ -44,42 +35,21 @@ const ORMModules = [
     TelegramSubscriptionsModule,
     BlocksModule,
     RpcBlocksModule,
-    HomeGraphModule,
-    UserAgentReportModule
+    ExternalSharesModule
 ]
 
 @Module({
     imports: [
         ConfigModule.forRoot(),
-        TypeOrmModule.forRootAsync({
-            useFactory: (configService: ConfigService) => {
-                return {
-                    type: 'postgres',
-                    host: configService.get('DB_HOST'),
-                    port: parseInt(configService.get('DB_PORT')),
-                    username: configService.get('DB_USERNAME'),
-                    password: configService.get('DB_PASSWORD'),
-                    database: configService.get('DB_DATABASE'),
-                    entities: [
-                        ClientEntity,
-                        AddressSettingsEntity,
-                        BlocksEntity,
-                        ClientStatisticsEntity,
-                        RpcBlockEntity,
-                        TelegramSubscriptionsEntity,
-                        HomeGraphEntity,
-                        UserAgentReportView
-                    ],
-                    synchronize: configService.get('PRODUCTION') != 'true',
+        TypeOrmModule.forRoot({
+            type: 'sqlite',
+            database: './DB/public-pool.sqlite',
+            synchronize: true,
+            autoLoadEntities: true,
             logging: false,
-                    poolSize: 10,
-                    migrations: [
-                        UniqueNonceIndex
-                    ]
-                }
-            },
-            imports: [ConfigModule],
-            inject: [ConfigService]
+            enableWAL: true,
+            busyTimeout: 30 * 1000,
+
         }),
         CacheModule.register(),
         ScheduleModule.forRoot(),
@@ -89,7 +59,8 @@ const ORMModules = [
     controllers: [
         AppController,
         ClientController,
-        AddressController
+        AddressController,
+        ExternalShareController
     ],
     providers: [
         DiscordService,
@@ -101,7 +72,8 @@ const ORMModules = [
         BitcoinAddressValidator,
         StratumV1JobsService,
         BTCPayService,
-        BraiinsService
+        BraiinsService,
+        ExternalSharesService,
     ],
 })
 export class AppModule {

src/controllers/client/client.controller.spec.ts

@@ -13,7 +13,7 @@ describe('ClientController', () => {
     const module: TestingModule = await Test.createTestingModule({
       imports: [
         TypeOrmModule.forRoot({
-          type: 'better-sqlite3',
+          type: 'sqlite',
           database: ':memory:',
           synchronize: true,
           autoLoadEntities: true,

src/controllers/client/client.controller.ts

@@ -30,7 +30,7 @@ export class ClientController {
                     return {
                         sessionId: worker.sessionId,
                         name: worker.clientName,
-                        bestDifficulty: parseFloat(worker.bestDifficulty as any).toFixed(2),
+                        bestDifficulty: worker.bestDifficulty.toFixed(2),
                         hashRate: worker.hashRate,
                         startTime: worker.startTime,
                         lastSeen: worker.updatedAt
@@ -75,7 +75,7 @@ export class ClientController {
         if (worker == null) {
             return new NotFoundException();
         }
-        const chartData = await this.clientStatisticsService.getChartDataForSession(worker.id);
+        const chartData = await this.clientStatisticsService.getChartDataForSession(worker.address, worker.clientName, worker.sessionId);
 
         return {
             sessionId: worker.sessionId,

src/controllers/external-share/external-share.controller.ts

@@ -0,0 +1,72 @@
+import { Body, Controller, Post, Get, UnauthorizedException, Headers } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+import { ExternalPoolShare } from '../../models/ExternalPoolShare';
+import { ExternalSharesService } from '../../ORM/external-shares/external-shares.service';
+import { DifficultyUtils } from '../../utils/difficulty.utils';
+import * as bitcoinjs from 'bitcoinjs-lib';
+
+@Controller('share')
+export class ExternalShareController {
+  private readonly apiKey: string;
+  private readonly minimumDifficulty: number;
+
+  constructor(
+    private readonly configService: ConfigService,
+    private readonly externalSharesService: ExternalSharesService,
+  ) {
+    this.apiKey = this.configService.get('SHARE_SUBMISSION_API_KEY');
+    this.minimumDifficulty = this.configService.get('MINIMUM_DIFFICULTY') || 1000000000000; // 1T
+  }
+
+  @Get('top-difficulties')
+  async getTopDifficulties() {
+    const topDifficulties = await this.externalSharesService.getTopDifficulties();
+    return topDifficulties;
+  }
+
+  @Post()
+  async submitExternalShare(
+    @Body() externalShare: ExternalPoolShare,
+    @Headers('x-api-key') apiKey: string,
+  ) {
+    // Only validate API key if one is configured
+    if (this.apiKey && apiKey !== this.apiKey) {
+      throw new UnauthorizedException('Invalid API key');
+    }
+
+    // Validate the header hash matches claimed difficulty
+    const headerBuffer = Buffer.from(externalShare.header, 'hex');
+    const { submissionDifficulty: difficulty } = DifficultyUtils.calculateDifficulty(headerBuffer);
+
+    // Verify the calculated difficulty matches or exceeds minimum difficulty
+    if (difficulty < this.minimumDifficulty) {
+      throw new UnauthorizedException('Share difficulty too low');
+    }
+
+    const block = bitcoinjs.Block.fromBuffer(headerBuffer);
+
+    const tenMinutesAgo = Math.floor(Date.now() / 1000) - (10 * 60);
+
+    if (block.timestamp < tenMinutesAgo) {
+      throw new UnauthorizedException('Share timestamp too old - must be within last 10 minutes');
+    }
+
+    // Store share submission
+    await this.externalSharesService.insert({
+      address: externalShare.address,
+      clientName: externalShare.worker,
+      time: new Date().getTime(),
+      difficulty: difficulty,
+      userAgent: externalShare.userAgent,
+      externalPoolName: externalShare.externalPoolName,
+      header: externalShare.header
+    });
+
+    console.log(`Accepted external share. ${difficulty}`);
+
+    return {
+      success: true,
+      calculatedDifficulty: difficulty,
+    };
+  }
+}

src/main.ts

@@ -3,35 +3,32 @@ import { NestFactory } from '@nestjs/core';
 import { FastifyAdapter, NestFastifyApplication } from '@nestjs/platform-fastify';
 import * as bitcoinjs from 'bitcoinjs-lib';
 import { useContainer } from 'class-validator';
-import { readFileSync, watch } from 'fs';
-import * as path from 'path';
+import { readFileSync } from 'fs';
 import * as ecc from 'tiny-secp256k1';
 
 import { AppModule } from './app.module';
 
 async function bootstrap() {
+
   if (process.env.API_PORT == null) {
     console.error('It appears your environment is not configured, create and populate an .env file.');
     return;
   }
 
-  const secure = process.env.API_SECURE?.toLowerCase() === 'true';
-  const currentDirectory = process.cwd();
-  const keyPath = path.join(currentDirectory, 'secrets', 'key.pem');
-  const certPath = path.join(currentDirectory, 'secrets', 'cert.pem');
-
-  let options: any = {};
+  let options = {};
+  const secure = process.env.API_SECURE?.toLowerCase() == 'true';
   if (secure) {
+    const currentDirectory = process.cwd();
     options = {
       https: {
-        key: readFileSync(keyPath),
-        cert: readFileSync(certPath),
+        key: readFileSync(`${currentDirectory}/secrets/key.pem`),
+        cert: readFileSync(`${currentDirectory}/secrets/cert.pem`),
       }
     };
   }
 
   const app = await NestFactory.create<NestFastifyApplication>(AppModule, new FastifyAdapter(options));
-  app.setGlobalPrefix('api');
+  app.setGlobalPrefix('api')
   app.useGlobalPipes(
     new ValidationPipe({
       transform: true,
@@ -54,53 +51,13 @@ async function bootstrap() {
   app.enableCors();
   useContainer(app.select(AppModule), { fallbackOnErrors: true });
 
-  // Taproot
+  //Taproot
   bitcoinjs.initEccLib(ecc);
 
   await app.listen(process.env.API_PORT, '0.0.0.0', (err, address) => {
-    if (err) {
-      console.error(err);
-      process.exit(1);
-    }
     console.log(`API listening on ${address}`);
   });
 
-  // --- Live-reload TLS certs/keys when they change on disk ---
-  if (secure) {
-    // Fastify's underlying Node https server
-    const server: any = app.getHttpServer();
-
-    // Guard: only HTTPS servers expose setSecureContext
-    if (typeof server?.setSecureContext === 'function') {
-      let reloadTimer: NodeJS.Timeout | null = null;
-
-      const scheduleReload = () => {
-        if (reloadTimer) clearTimeout(reloadTimer);
-        // Debounce multiple fs events during a single write/replace
-        reloadTimer = setTimeout(() => {
-          try {
-            const key = readFileSync(keyPath);
-            const cert = readFileSync(certPath);
-            server.setSecureContext({ key, cert });
-            console.log(`[TLS] Reloaded certificate @ ${new Date().toISOString()}`);
-          } catch (e) {
-            console.error('[TLS] Failed to reload certificate:', e);
-          }
-        }, 500);
-      };
-
-      // Watch both files; handle 'change' and 'rename' (rename often fired on atomic replace)
-      try {
-        watch(keyPath, { persistent: true }, scheduleReload);
-        watch(certPath, { persistent: true }, scheduleReload);
-        console.log('[TLS] Watching cert/key for changes');
-      } catch (e) {
-        console.error('[TLS] Failed to watch cert/key files:', e);
-      }
-    } else {
-      console.warn('[TLS] Dynamic cert reload not available (non-HTTPS server?)');
-    }
-  }
 }
 
 bootstrap();

src/models/ExternalPoolShare.ts

@@ -0,0 +1,27 @@
+import { IsString, Matches, MaxLength } from 'class-validator';
+import { Transform } from 'class-transformer';
+import { IsBitcoinAddress } from './validators/bitcoin-address.validator';
+
+export class ExternalPoolShare {
+  @IsString()
+  @MaxLength(64)
+  worker: string;
+
+  @IsString()
+  @IsBitcoinAddress()
+  address: string;
+
+  @IsString()
+  @MaxLength(128)
+  userAgent: string;
+
+  @IsString()
+  @MaxLength(128)
+  externalPoolName: string;
+
+  @IsString()
+  @Matches(/^[0-9a-fA-F]+$/, { 
+    message: 'Header must be a valid hex string'
+  })
+  header: string;
+}

src/models/MiningJob.spec.ts

@@ -1,28 +1,210 @@
+import { ConfigService } from '@nestjs/config';
+import { Test, TestingModule } from '@nestjs/testing';
 import * as bitcoinjs from 'bitcoinjs-lib';
 import { BehaviorSubject, firstValueFrom } from 'rxjs';
 
 import { MockRecording1 } from '../../test/models/MockRecording1';
-import { StratumV1JobsService } from '../services/stratum-v1-jobs.service';
+import { IMiningInfo } from './bitcoin-rpc/IMiningInfo';
+import { IJobTemplate, StratumV1JobsService } from '../services/stratum-v1-jobs.service';
 import { MiningJob } from './MiningJob';
 
+function hexToAscii(hex: string): string {
+    let ascii = '';
+    for (let i = 0; i < hex.length; i += 2) {
+        const char = String.fromCharCode(parseInt(hex.substr(i, 2), 16));
+        if (char !== '\0') {  // Ignore null characters to make sure string matching works
+            ascii += char;
+        }
+    }
+    return ascii;
+}
+
+function extractPoolIdentifierFromScript(coinbaseHex: string) {
+    let offset = 8 + 2 + 64 + 8;  // Skip Version, Input Count, Previous Transaction Hash, Previous Output Index
+
+    // Coinbase Data Length (1 byte / 2 hex characters)
+    const coinbaseDataLengthHex = coinbaseHex.substr(offset, 2);
+    const coinbaseDataLength = parseInt(coinbaseDataLengthHex, 16);
+    offset += 2;
+
+    // Coinbase Data (coinbaseDataLength * 2 hex characters)
+    const coinbaseDataHex = coinbaseHex.substr(offset, coinbaseDataLength * 2);
+
+    const coinbaseDataAscii = hexToAscii(coinbaseDataHex);
+
+    return coinbaseDataAscii;
+}
+
 describe('MiningJob', () => {
-    let jobTemplate;
+    let moduleRef: TestingModule;
+    let configService: ConfigService;
+    let block: bitcoinjs.Block;
+    let jobTemplate: IJobTemplate;
+    let payoutInformation: any[];
+
+
+    beforeAll(async () => {
+        moduleRef = await Test.createTestingModule({
+            providers: [
+                {
+                    provide: ConfigService,
+                    useValue: {
+                        get: jest.fn(() => null)
+                    }
+                }
+            ],
+        }).compile();
+        configService = moduleRef.get<ConfigService>(ConfigService);
+    });
+
+    describe('constructor', () => {
+        beforeEach(() => {
+
+            console.warn = jest.fn((message: string) => console.log('WARN:', message));
+            configService.get = jest.fn(() => null);
+            payoutInformation = [
+                {
+                    address: 'tb1qr2ylpdgp9ejpt6v2uxlqrn9penp82rzz2grnns',
+                    percent: 100,
+                }
+            ];
+            block = new bitcoinjs.Block();
+            block.witnessCommit = Buffer.from('000');
+            block.prevHash = Buffer.from('000');
+            block.merkleRoot = Buffer.from('000');
+            block.transactions = [];
+
+            const maxTransactions = 7545; // this is only for block weight calculation, other metrics like operations are not considered because they are not affected by the size of the pool identifier
+            for (let i = 0; i < maxTransactions; i++) {
+                block.transactions.push(bitcoinjs.Transaction.fromHex("010000000001017405e391018c5e9dc79f324f9607c9c46d21b02f66dabaa870b4add871d6379f01000000171600148d7a0a3461e3891723e5fdf8129caa0075060cffffffffff01fcf60200000000001600148d7a0a3461e3891723e5fdf8129caa0075060cff0248304502210088025cffdaf69d310c6fed11832edd9c19b6a912c132262701ad0e6133227d9202207d73bbf777abd2aeae995d684e6bb1a048c5ac722e16de48bdd35643df7decf001210283409659355b6d1cc3c32decd5d561abaac86c37a353b52895a5e6c196d6f44800000000"));
+            }
+
+            jobTemplate = {
+                block: block,
+                merkle_branch: [],
+                blockData: {
+                    id: '1',
+                    creation: Date.now(),
+                    coinbasevalue: 0,
+                    networkDifficulty: 0,
+                    height: 0,
+                    clearJobs: false,
+                }
+            } as IJobTemplate;
+        });
+
+        afterEach(() => {
+            jest.restoreAllMocks();
+        });
+
+        it('should create a new MiningJob if POOL_IDENTIFIER is not set and use the default', () => {
+            const expectedMiningIdentifier = 'Public-Pool';
+            expect(jobTemplate.block).toBeDefined();
+            const miningJob = new MiningJob(configService, bitcoinjs.networks.testnet, '1', payoutInformation, jobTemplate);
+
+            const response = JSON.parse(miningJob.response(jobTemplate));
+
+            const miningIdentifier = extractPoolIdentifierFromScript(response.params[2]);
+            expect(miningIdentifier).toBe(expectedMiningIdentifier);
+            expect(console.warn).not.toBeCalled();
+        });
+
+        it('should use the POOL_IDENTIFIER if it doesn\'t make the script size too big', () => {
+            const expectedMiningIdentifier = 'My Mining Pool';
+
+            configService.get = jest.fn((key: string) => {
+                switch (key) {
+                    case 'POOL_IDENTIFIER': return expectedMiningIdentifier;
+                }
+                return null;
+            });
+
+            const miningJob = new MiningJob(configService, bitcoinjs.networks.testnet, '1', payoutInformation, jobTemplate);
+            const response = JSON.parse(miningJob.response(jobTemplate));
+
+            const miningIdentifier = extractPoolIdentifierFromScript(response.params[2]);
+            expect(miningIdentifier).toBe(expectedMiningIdentifier);
+            expect(console.warn).not.toBeCalled();
+
+        });
+
+        it('should remove pool identifier if block is too big with identifier', () => {
+            const expectedMiningIdentifier = '';
+
+            configService.get = jest.fn((key: string) => {
+                switch (key) {
+                    case 'POOL_IDENTIFIER': return 'A'.repeat(84);
+                }
+                return null;
+            });
+
+            const miningJob = new MiningJob(configService, bitcoinjs.networks.testnet, '1', payoutInformation, jobTemplate);
+            const response = JSON.parse(miningJob.response(jobTemplate));
+
+            const miningIdentifier = extractPoolIdentifierFromScript(response.params[2]);
+            expect(console.warn).toBeCalledWith('Block weight exceeds the maximum allowed weight, removing the pool identifier');
+            expect(miningIdentifier).toBe(expectedMiningIdentifier);
+        });
+
+        it('should use the POOL_IDENTIFIER if it doesn\'t make the script size too big with identifier abcabc', () => {
+
+            jobTemplate.block.transactions = []; // remove transactions because we only want to test the script size
+            const expectedMiningIdentifier = 'A'.repeat(84); // 84 chars fits after reserving 12 bytes for extranonce space
+            configService.get = jest.fn((key: string) => {
+                switch (key) {
+                    case 'POOL_IDENTIFIER': return expectedMiningIdentifier;
+                }
+                return null;
+            });
+
+            const miningJob = new MiningJob(configService, bitcoinjs.networks.testnet, '1', payoutInformation, jobTemplate);
+            const response = JSON.parse(miningJob.response(jobTemplate));
+
+            const miningIdentifier = extractPoolIdentifierFromScript(response.params[2]);
+            expect(miningIdentifier).toBe(expectedMiningIdentifier);
+            expect(console.warn).not.toBeCalled();
+        });
+
+        it('should remove pool identifier if script is too big with identifier', () => {
+            const expectedMiningIdentifier = '';
+            jobTemplate.block.transactions = []; // remove transactions because we only want to test the script size
+            configService.get = jest.fn((key: string) => {
+                switch (key) {
+                    case 'POOL_IDENTIFIER': return 'A'.repeat(85);
+                }
+                return null;
+            });
+
+            const miningJob = new MiningJob(configService, bitcoinjs.networks.testnet, '1', payoutInformation, jobTemplate);
+            const response = JSON.parse(miningJob.response(jobTemplate));
+
+            const miningIdentifier = extractPoolIdentifierFromScript(response.params[2]);
+            expect(console.warn).toBeCalledWith('Pool identifier is too long, removing the pool identifier');
+            expect(miningIdentifier).toBe(expectedMiningIdentifier);
+        });
+    });
+
+    describe('block updates', () => {
         let job: MiningJob;
 
         beforeEach(async () => {
             jest.useFakeTimers();
             jest.setSystemTime(new Date(parseInt(MockRecording1.TIME, 16) * 1000));
+            configService.get = jest.fn(() => null);
 
-        const blockTemplate$ = new BehaviorSubject(MockRecording1.BLOCK_TEMPLATE);
+            const miningInfo$ = new BehaviorSubject<IMiningInfo>({
+                blocks: MockRecording1.BLOCK_TEMPLATE.height
+            } as IMiningInfo);
             const bitcoinRpcService = {
-            newBlockTemplate$: blockTemplate$.asObservable(),
-            miningInfo: { blocks: MockRecording1.BLOCK_TEMPLATE.height }
+                newBlock$: miningInfo$.asObservable(),
+                getBlockTemplate: jest.fn().mockResolvedValue(MockRecording1.BLOCK_TEMPLATE)
             };
             jest.spyOn(console, 'log').mockImplementation(() => undefined);
 
             const jobsService = new StratumV1JobsService(bitcoinRpcService as any);
             jobTemplate = await firstValueFrom(jobsService.newMiningJob$);
             job = new MiningJob(
+                configService,
                 bitcoinjs.networks.testnet,
                 '1',
                 [{ address: 'tb1qumezefzdeqqwn5zfvgdrhxjzc5ylr39uhuxcz4', percent: 100 }],
@@ -109,32 +291,5 @@ describe('MiningJob', () => {
 
             expect(fastHeader.equals(updatedBlock.toBuffer(true))).toBe(true);
         });
-
-    it('should expose coinbase helpers for downstream validation', () => {
-        const notify = JSON.parse(job.response(jobTemplate));
-
-        expect(job.getCoinbaseTxHex()).toContain(notify.params[2]);
-        expect(job.getCoinbasePrefixBuffer().toString('hex')).toBe(notify.params[2]);
-        expect(job.getCoinbaseSuffixBuffer().toString('hex')).toBe(notify.params[3]);
-        const clone = job.cloneCoinbaseTransaction();
-        const nonWitnessCoinbase = bitcoinjs.Transaction.fromHex(job.getCoinbaseTxHex());
-        expect(clone.ins[0].script.toString('hex')).toBe(nonWitnessCoinbase.ins[0].script.toString('hex'));
-        expect(clone.outs).toHaveLength(nonWitnessCoinbase.outs.length);
-        expect(clone.ins[0].witness[0]).toHaveLength(32);
-    });
-
-    it('should omit oversized pool identifiers from the coinbase script', () => {
-        jest.spyOn(console, 'warn').mockImplementation(() => undefined);
-        const oversizedIdentifier = 'x'.repeat(120);
-        const oversizedJob = new MiningJob(
-            bitcoinjs.networks.testnet,
-            '2',
-            [{ address: 'tb1qumezefzdeqqwn5zfvgdrhxjzc5ylr39uhuxcz4', percent: 100 }],
-            jobTemplate,
-            oversizedIdentifier
-        );
-        const coinbase = bitcoinjs.Transaction.fromHex(oversizedJob.getCoinbaseTxHex());
-
-        expect(coinbase.ins[0].script.toString()).not.toContain(oversizedIdentifier);
     });
 });

src/models/MiningJob.ts

@@ -3,11 +3,12 @@ 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';
 import { TOTAL_EXTRANONCE_SIZE_BYTES } from './stratum.constants';
 
 const MAX_BLOCK_WEIGHT = 4000000;
-const MAX_SCRIPT_SIZE = 100;
-
+const MAX_SCRIPT_SIZE = 100; //   https://github.com/bitcoin/bitcoin/blob/ffdc3d6060f6e65e69cf115a13b83e6eb4a0a0a8/src/consensus/tx_check.cpp#L49
 interface AddressObject {
     address: string;
     percent: number;
@@ -20,18 +21,17 @@ export class MiningJob {
     private coinbasePart1Buffer: Buffer;
     private coinbasePart2Buffer: Buffer;
     private merkleBranchBuffers: Buffer[];
-    private notifyStaticParams: string;
 
     public jobTemplateId: string;
     public networkDifficulty: number;
     public creation: number;
 
     constructor(
+        configService: ConfigService,
         private network: bitcoinjs.networks.Network,
         public jobId: string,
         payoutInformation: AddressObject[],
-        jobTemplate: IJobTemplate,
-        poolIdentifier: string = process.env.POOL_IDENTIFIER || 'Public-Pool'
+        jobTemplate: IJobTemplate
     ) {
 
         this.creation = new Date().getTime();
@@ -48,7 +48,9 @@ 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(poolIdentifier);
+        // 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
@@ -57,23 +59,25 @@ 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(TOTAL_EXTRANONCE_SIZE_BYTES + (3 - blockHeightEncoded.length), 0)
 
-        // build the script
+        // 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');
-            this.coinbaseTransaction.ins[0].script = Buffer.concat([blockHeightLengthByte, blockHeightEncoded, padding]);
+            let script = Buffer.concat([blockHeightLengthByte, blockHeightEncoded, padding]);
+            this.coinbaseTransaction.ins[0].script = script;
         }
 
         // get the non-witness coinbase tx
@@ -88,30 +92,8 @@ export class MiningJob {
         this.coinbasePart2 = serializedCoinbaseTx.slice(partOneIndex);
         this.coinbasePart1Buffer = Buffer.from(this.coinbasePart1, 'hex');
         this.coinbasePart2Buffer = Buffer.from(this.coinbasePart2, 'hex');
-        this.notifyStaticParams = JSON.stringify([
-            this.swapEndianWords(jobTemplate.block.prevHash).toString('hex'),
-            this.coinbasePart1,
-            this.coinbasePart2,
-            jobTemplate.merkle_branch,
-            jobTemplate.block.version.toString(16),
-            jobTemplate.block.bits.toString(16),
-            jobTemplate.block.timestamp.toString(16),
-            jobTemplate.blockData.clearJobs
-        ]).slice(1);
 
-    }
 
-    public getCoinbaseTxHex(): string {
-        //@ts-ignore
-        return this.coinbaseTransaction.__toBuffer().toString('hex');
-    }
-
-    public getCoinbasePrefixBuffer(): Buffer {
-        return Buffer.from(this.coinbasePart1Buffer);
-    }
-
-    public getCoinbaseSuffixBuffer(): Buffer {
-        return Buffer.from(this.coinbasePart2Buffer);
     }
 
     public cloneCoinbaseTransaction(): bitcoinjs.Transaction {
@@ -245,7 +227,24 @@ export class MiningJob {
     }
 
     public response(jobTemplate: IJobTemplate): string {
-        return `{"id":null,"method":"${eResponseMethod.MINING_NOTIFY}","params":[${JSON.stringify(this.jobId)},${this.notifyStaticParams}}\n`;
+
+        const job: IMiningNotify = {
+            id: null,
+            method: eResponseMethod.MINING_NOTIFY,
+            params: [
+                this.jobId,
+                this.swapEndianWords(jobTemplate.block.prevHash).toString('hex'),
+                this.coinbasePart1,
+                this.coinbasePart2,
+                jobTemplate.merkle_branch,
+                jobTemplate.block.version.toString(16),
+                jobTemplate.block.bits.toString(16),
+                jobTemplate.block.timestamp.toString(16),
+                jobTemplate.blockData.clearJobs
+            ]
+        };
+
+        return JSON.stringify(job) + '\n';
     }
 
 

src/models/StratumV1Client.spec.ts

@@ -20,8 +20,9 @@ import { BitcoinRpcService as MockBitcoinRpcService } from '../services/bitcoin-
 import { NotificationService } from '../services/notification.service';
 import { StratumV1JobsService } from '../services/stratum-v1-jobs.service';
 import { IBlockTemplate } from './bitcoin-rpc/IBlockTemplate';
+import { IMiningInfo } from './bitcoin-rpc/IMiningInfo';
 import { MiningJob } from './MiningJob';
-import { effectiveJobDifficulty, StratumV1Client } from './StratumV1Client';
+import { StratumV1Client } from './StratumV1Client';
 import { MiningSubmitMessage } from './stratum-messages/MiningSubmitMessage';
 
 
@@ -48,6 +49,7 @@ describe('StratumV1Client', () => {
     let clientStatisticsService: ClientStatisticsService;
     let notificationService: NotificationService;
     let blocksService: BlocksService;
+    let externalSharesService;
     let configService: ConfigService;
 
     let client: StratumV1Client;
@@ -58,7 +60,9 @@ describe('StratumV1Client', () => {
     let consoleErrorSpy: jest.SpyInstance;
     let consoleWarnSpy: jest.SpyInstance;
 
-    let newBlockEmitter: BehaviorSubject<IBlockTemplate> = new BehaviorSubject(MockRecording1.BLOCK_TEMPLATE);
+    let newBlockEmitter: BehaviorSubject<IMiningInfo> = new BehaviorSubject({
+        blocks: MockRecording1.BLOCK_TEMPLATE.height
+    } as IMiningInfo);
 
     let moduleRef: TestingModule;
 
@@ -66,7 +70,7 @@ describe('StratumV1Client', () => {
         moduleRef = await Test.createTestingModule({
             imports: [
                 TypeOrmModule.forRoot({
-                    type: 'better-sqlite3',
+                    type: 'sqlite',
                     database: ':memory:',
                     synchronize: true,
                     autoLoadEntities: true,
@@ -109,6 +113,7 @@ describe('StratumV1Client', () => {
         consoleWarnSpy = jest.spyOn(console, 'warn').mockImplementation(() => undefined);
 
         clientService = moduleRef.get<ClientService>(ClientService);
+        clientService.insertQueue = [];
 
         const dataSource = moduleRef.get<DataSource>(DataSource);
 
@@ -132,11 +137,9 @@ describe('StratumV1Client', () => {
         (StratumV1Client as any).blockedUserAgentLogState.clear();
         (StratumV1Client as any).validationErrorLogState.clear();
 
-        bitcoinRpcService = {
-            newBlockTemplate$: newBlockEmitter.asObservable(),
-            miningInfo: { blocks: MockRecording1.BLOCK_TEMPLATE.height },
-            SUBMIT_BLOCK: jest.fn().mockResolvedValue(null)
-        } as any;
+        bitcoinRpcService = new MockBitcoinRpcService(configService,null);
+        jest.spyOn(bitcoinRpcService, 'getBlockTemplate').mockReturnValue(Promise.resolve(MockRecording1.BLOCK_TEMPLATE));
+        bitcoinRpcService.newBlock$ = newBlockEmitter.asObservable();
 
 
         stratumV1JobsService = new StratumV1JobsService(bitcoinRpcService);
@@ -161,6 +164,9 @@ describe('StratumV1Client', () => {
         blocksService = {
             save: jest.fn().mockResolvedValue(undefined)
         } as any;
+        externalSharesService = {
+            submitShare: jest.fn().mockResolvedValue(undefined)
+        };
 
 
         client = new StratumV1Client(
@@ -172,7 +178,8 @@ describe('StratumV1Client', () => {
             notificationService,
             blocksService,
             configService,
-            addressSettings
+            addressSettings,
+            externalSharesService
         );
 
         client.extraNonceAndSessionId = MockRecording1.EXTRA_NONCE;
@@ -199,27 +206,6 @@ describe('StratumV1Client', () => {
         expect(socket.on).toHaveBeenCalled();
     });
 
-    it('should process batched socket messages sequentially', async () => {
-        const calls: string[] = [];
-        jest.spyOn(client as any, 'handleMessage').mockImplementation(async (message: string) => {
-            calls.push(`start:${message}`);
-            await Promise.resolve();
-            calls.push(`end:${message}`);
-        });
-
-        socketEmitter(Buffer.from('first\nsecond\n'));
-        await Promise.resolve();
-        await Promise.resolve();
-        await Promise.resolve();
-
-        expect(calls).toEqual([
-            'start:first',
-            'end:first',
-            'start:second',
-            'end:second',
-        ]);
-    });
-
     it('should respond to mining.subscribe', async () => {
         jest.spyOn(socket, 'write').mockImplementation((data) => true);
 
@@ -288,7 +274,8 @@ describe('StratumV1Client', () => {
             notificationService,
             blocksService,
             configService,
-            moduleRef.get<AddressSettingsService>(AddressSettingsService)
+            moduleRef.get<AddressSettingsService>(AddressSettingsService),
+            externalSharesService
         );
 
         socketEmitter(Buffer.from(`{"id":1,"method":"mining.subscribe","params":["NMMiner/1.0"]}\n`));
@@ -349,6 +336,8 @@ describe('StratumV1Client', () => {
         await new Promise((r) => setTimeout(r, 100));
         emitMessage(MockRecording1.MINING_SUBMIT);
         await new Promise((r) => setTimeout(r, 100));
+        await clientService.insertClients();
+        await new Promise((r) => setTimeout(r, 100));
 
         const clientCount = await clientService.connectedClientCount();
         expect(clientCount).toBe(1);
@@ -378,10 +367,16 @@ describe('StratumV1Client', () => {
 
         await new Promise((r) => setTimeout(r, 100));
 
+        const notifyCall = (client as any).write.mock.calls
+            .map(call => call[0])
+            .find((message: string) => message.includes('"method":"mining.notify"'));
+        const notify = JSON.parse(notifyCall);
 
-
-
-        expect((client as any).write).lastCalledWith(`{"id":null,"method":"mining.notify","params":["1","171592f223740e92d223f6e68bff25279af7ac4f2246451e0000000200000000","02000000010000000000000000000000000000000000000000000000000000000000000000ffffffff1b03c943255075626c69632d506f6f6c","ffffffff02b59f250000000000160014e6f22ca44dc800e9d049621a3b9a42c509f1c4bc0000000000000000266a24aa21a9edbd3d1d916aa0b57326a2d88ebe1b68a1d7c48585f26d8335fe6a94b62755f64c00000000",["175335649d5e8746982969ec88f52e85ac9917106fba5468e699c8879ab974a1","d5644ab3e708c54cd68dc5aedc92b8d3037449687f92ec41ed6e37673d969d4a","5c9ec187517edc0698556cca5ce27e54c96acb014770599ed9df4d4937fbf2b0"],"20000000","192495f8","${MockRecording1.TIME}",true]}\n`);
+        expect(notify.params[0]).toBe('1');
+        expect(notify.params[5]).toBe('20000000');
+        expect(notify.params[6]).toBe('192495f8');
+        expect(notify.params[7]).toBe(MockRecording1.TIME);
+        expect(notify.params[8]).toBe(true);
 
 
         emitMessage(MockRecording1.MINING_SUBMIT);
@@ -405,6 +400,8 @@ describe('StratumV1Client', () => {
         await new Promise((r) => setTimeout(r, 100));
 
         emitMessage(MockRecording1.MINING_SUBMIT);
+        await new Promise((r) => setTimeout(r, 100));
+        await clientService.insertClients();
         jest.useRealTimers();
         await new Promise((r) => setTimeout(r, 1000));
 
@@ -455,6 +452,8 @@ describe('StratumV1Client', () => {
         await new Promise((r) => setTimeout(r, 100));
 
         emitMessage(MockRecording1.MINING_SUBMIT);
+        await new Promise((r) => setTimeout(r, 100));
+        await clientService.insertClients();
         jest.useRealTimers();
         await new Promise((r) => setTimeout(r, 1000));
 
@@ -571,7 +570,8 @@ describe('StratumV1Client', () => {
             notificationService,
             blocksService,
             configService,
-            moduleRef.get<AddressSettingsService>(AddressSettingsService)
+            moduleRef.get<AddressSettingsService>(AddressSettingsService),
+            externalSharesService
         );
         jest.spyOn(secondClient as any, 'write').mockImplementation((data) => Promise.resolve(true));
         jest.spyOn(secondClient as any, 'getRandomHexString').mockReturnValue(MockRecording1.EXTRA_NONCE);
@@ -597,14 +597,12 @@ describe('StratumV1Client', () => {
 
     it('should submit and persist found blocks', async () => {
         jest.spyOn(client as any, 'write').mockImplementation((data) => Promise.resolve(true));
-        (bitcoinRpcService.SUBMIT_BLOCK as jest.Mock).mockResolvedValue('SUCCESS!');
         jest.spyOn(client as any, 'calculateDifficulty').mockReturnValue({
             submissionDifficulty: Number.MAX_SAFE_INTEGER,
             submissionHash: 'block-share'
         });
         const addressSettings = moduleRef.get<AddressSettingsService>(AddressSettingsService);
-        const resetSpy = jest.spyOn(addressSettings, 'resetBestDifficultyAndShares').mockResolvedValue(undefined);
-        resetSpy.mockClear();
+        jest.spyOn(addressSettings, 'resetBestDifficultyAndShares').mockResolvedValue(undefined);
 
         emitMessage(MockRecording1.MINING_SUBSCRIBE);
         emitMessage(`{"id": 4, "method": "mining.suggest_difficulty", "params": [0]}`);
@@ -628,43 +626,6 @@ describe('StratumV1Client', () => {
         expect((client as any).write).lastCalledWith(`{"id":5,"error":null,"result":true}\n`);
     });
 
-    it('should not persist or notify rejected block submissions', async () => {
-        jest.spyOn(client as any, 'write').mockImplementation((data) => Promise.resolve(true));
-        (bitcoinRpcService.SUBMIT_BLOCK as jest.Mock).mockResolvedValue('bad-prevblk');
-        jest.spyOn(client as any, 'calculateDifficulty').mockReturnValue({
-            submissionDifficulty: Number.MAX_SAFE_INTEGER,
-            submissionHash: 'block-share'
-        });
-        const addressSettings = moduleRef.get<AddressSettingsService>(AddressSettingsService);
-        const resetSpy = jest.spyOn(addressSettings, 'resetBestDifficultyAndShares').mockResolvedValue(undefined);
-        resetSpy.mockClear();
-
-        emitMessage(MockRecording1.MINING_SUBSCRIBE);
-        emitMessage(`{"id": 4, "method": "mining.suggest_difficulty", "params": [0]}`);
-        emitMessage(MockRecording1.MINING_AUTHORIZE);
-        await new Promise((r) => setTimeout(r, 100));
-
-        emitMessage(MockRecording1.MINING_SUBMIT);
-        jest.useRealTimers();
-        await new Promise((r) => setTimeout(r, 1000));
-
-        expect(bitcoinRpcService.SUBMIT_BLOCK).toHaveBeenCalledWith(expect.any(String));
-        expect(blocksService.save).not.toHaveBeenCalled();
-        expect(notificationService.notifySubscribersBlockFound).not.toHaveBeenCalled();
-        expect(resetSpy).not.toHaveBeenCalled();
-        expect((client as any).write).lastCalledWith(`{"id":5,"error":null,"result":true}\n`);
-    });
-
 
 
 });
-
-describe('effectiveJobDifficulty', () => {
-    it('should use the old difficulty for jobs issued before a difficulty change', () => {
-        expect(effectiveJobDifficulty(9, 128, 32, 10)).toBe(32);
-    });
-
-    it('should use the current difficulty for jobs issued after a difficulty change', () => {
-        expect(effectiveJobDifficulty(10, 128, 32, 10)).toBe(128);
-    });
-});

src/models/StratumV1Client.ts

@@ -27,32 +27,17 @@ import { SubscriptionMessage } from './stratum-messages/SubscriptionMessage';
 import { EXTRANONCE1_SIZE_BYTES } from './stratum.constants';
 import { SuggestDifficulty } from './stratum-messages/SuggestDifficultyMessage';
 import { StratumV1ClientStatistics } from './StratumV1ClientStatistics';
+import { ExternalSharesService } from '../services/external-shares.service';
 
 const TRUE_DIFF_ONE = 2.695953529101131e67;
 const BLOCKED_USER_AGENT_LOG_INTERVAL_MS = 60 * 1000;
 const VALIDATION_ERROR_LOG_INTERVAL_MS = 60 * 1000;
 
-export function effectiveJobDifficulty(
-    jobIdInt: number,
-    currentDiff: number,
-    oldDiff: number,
-    diffChangeJobId: number | null,
-): number {
-    if (diffChangeJobId == null || !Number.isFinite(jobIdInt)) {
-        return currentDiff;
-    }
-    if (jobIdInt < diffChangeJobId) {
-        return Math.min(currentDiff, oldDiff);
-    }
-    return currentDiff;
-}
-
-
 export class StratumV1Client {
     private static blockedUserAgentLogState = new Map<string, { nextLogAt: number, suppressed: number }>();
     private static validationErrorLogState = new Map<string, { nextLogAt: number, suppressed: number, sample: string }>();
 
-    public clientSubscription: SubscriptionMessage;
+    private clientSubscription: SubscriptionMessage;
     private clientConfiguration: ConfigurationMessage;
     private clientAuthorization: AuthorizationMessage;
     private clientSuggestedDifficulty: SuggestDifficulty;
@@ -63,19 +48,18 @@ export class StratumV1Client {
     private stratumInitialized = false;
     private usedSuggestedDifficulty = false;
     private sessionDifficulty: number = 100000;
-    private oldSessionDifficulty: number = 100000;
-    private diffChangeJobId: number | null = null;
 
-    private clientEntity: ClientEntity;
+    private entity: ClientEntity;
     private creatingEntity: Promise<void>;
 
     public extraNonceAndSessionId: string;
     public sessionStart: Date;
-    //public noFee: boolean;
-    //public hashRate: number = 0;
+    public noFee: boolean;
+    public hashRate: number = 0;
 
     private buffer: string = '';
     private connectionClosed = false;
+    private lastSentMiningJobTimestamp: number = null;
 
     private miningSubmissionHashes = new Set<string>()
 
@@ -88,7 +72,8 @@ export class StratumV1Client {
         private readonly notificationService: NotificationService,
         private readonly blocksService: BlocksService,
         private readonly configService: ConfigService,
-        private readonly addressSettingsService: AddressSettingsService
+        private readonly addressSettingsService: AddressSettingsService,
+        private readonly externalSharesService: ExternalSharesService
     ) {
 
         this.socket.on('data', (data: Buffer) => {
@@ -116,8 +101,8 @@ export class StratumV1Client {
 
     public async destroy() {
 
-        if (this.clientEntity?.id) {
-            await this.clientService.delete(this.clientEntity.id);
+        if (this.extraNonceAndSessionId) {
+            await this.clientService.delete(this.extraNonceAndSessionId);
         }
 
         if (this.stratumSubscription != null) {
@@ -175,7 +160,7 @@ export class StratumV1Client {
                         this.sessionStart = new Date();
                         this.statistics = new StratumV1ClientStatistics(this.clientStatisticsService);
                         this.extraNonceAndSessionId = this.getRandomHexString();
-                        //console.log(`New client ID: : ${this.extraNonceAndSessionId}, ${this.socket.remoteAddress}:${this.socket.remotePort}`);
+                        console.log(`New client ID: : ${this.extraNonceAndSessionId}, ${this.socket.remoteAddress}:${this.socket.remotePort}`);
                     }
 
                     this.clientSubscription = subscriptionMessage;
@@ -222,7 +207,7 @@ export class StratumV1Client {
                     }
 
                 } else {
-                    console.log('Configuration validation error');
+                    console.error('Configuration validation error');
                     const err = new StratumErrorMessage(
                         configurationMessage.id,
                         eStratumErrorCode.OtherUnknown,
@@ -255,19 +240,19 @@ export class StratumV1Client {
                     this.clientAuthorization = authorizationMessage;
                     if (this.clientSuggestedDifficulty == null && this.clientAuthorization.startingDiff != null && this.clientAuthorization.startingDiff > this.sessionDifficulty) {
                         this.sessionDifficulty = this.clientAuthorization.startingDiff;
-                        this.oldSessionDifficulty = this.sessionDifficulty;
                     }
                     const success = await this.write(JSON.stringify(this.clientAuthorization.response()) + '\n');
                     if (!success) {
                         return;
                     }
                 } else {
+                    console.error('Authorization validation error');
                     const err = new StratumErrorMessage(
                         authorizationMessage.id,
                         eStratumErrorCode.OtherUnknown,
                         'Authorization validation error',
                         errors).response();
-                    //console.log(err);
+                    console.error(err);
                     const success = await this.write(err);
                     if (!success) {
                         return;
@@ -297,7 +282,6 @@ export class StratumV1Client {
 
                     this.clientSuggestedDifficulty = suggestDifficultyMessage;
                     this.sessionDifficulty = suggestDifficultyMessage.suggestedDifficulty;
-                    this.oldSessionDifficulty = this.sessionDifficulty;
                     const success = await this.write(JSON.stringify(this.clientSuggestedDifficulty.response(this.sessionDifficulty)) + '\n');
                     if (!success) {
                         return;
@@ -321,7 +305,7 @@ export class StratumV1Client {
             case eRequestMethod.SUBMIT: {
 
                 if (this.stratumInitialized == false) {
-                    //console.log('Submit before initalized');
+                    console.log('Submit before initalized');
                     await this.socket.end();
                     return;
                 }
@@ -378,7 +362,7 @@ export class StratumV1Client {
             && this.clientAuthorization != null
             && this.stratumInitialized == false) {
 
-            this.initStratum();
+            await this.initStratum();
 
         }
     }
@@ -395,7 +379,6 @@ export class StratumV1Client {
         switch (this.clientSubscription.userAgent) {
             case 'cpuminer': {
                 this.sessionDifficulty = 0.1;
-                this.oldSessionDifficulty = this.sessionDifficulty;
             }
         }
 
@@ -426,40 +409,29 @@ export class StratumV1Client {
             }, 60 * 1000)
         );
 
-        // this.backgroundWork.push(
-        //     setInterval(async () => {
-        //         await this.statistics.saveShares(this.clientEntity);
-        //     }, 60 * 1000)
-        // );
     }
 
     private async sendNewMiningJob(jobTemplate: IJobTemplate) {
 
-        let payoutInformation= [
+        let payoutInformation;
+        const devFeeAddress = this.configService.get('DEV_FEE_ADDRESS');
+        //50Th/s
+        this.noFee = false;
+        if (this.entity) {
+            this.hashRate = this.statistics.hashRate;
+            this.noFee = this.hashRate != 0 && this.hashRate < 50000000000000;
+        }
+        if (this.noFee || devFeeAddress == null || devFeeAddress.length < 1) {
+            payoutInformation = [
                 { address: this.clientAuthorization.address, percent: 100 }
             ];
-        // const devFeeAddress = this.configService.get('DEV_FEE_ADDRESS');
-        // //50Th/s
-        // this.noFee = false;
-        // if (this.clientEntity) {
-        //     this.hashRate = await this.clientStatisticsService.getHashRateForSession(this.clientEntity.id);
-        //     // 250Gh/s
-        //     if(this.hashRate < 250000000000){
-        //         this.statistics.targetSubmitShareEveryNSeconds = 10;
-        //     }
-        //     this.noFee = this.hashRate != 0 && this.hashRate < 50000000000000;
-        // }
-        // if (this.noFee || devFeeAddress == null || devFeeAddress.length < 1) {
-        //     payoutInformation = [
-        //         { address: this.clientAuthorization.address, percent: 100 }
-        //     ];
 
-        // } else {
-        //     payoutInformation = [
-        //         { address: devFeeAddress, percent: 1.5 },
-        //         { address: this.clientAuthorization.address, percent: 98.5 }
-        //     ];
-        // }
+        } else {
+            payoutInformation = [
+                { address: devFeeAddress, percent: 1.5 },
+                { address: this.clientAuthorization.address, percent: 98.5 }
+            ];
+        }
 
         const networkConfig = this.configService.get('NETWORK');
         let network;
@@ -475,11 +447,11 @@ export class StratumV1Client {
         }
 
         const job = new MiningJob(
+            this.configService,
             network,
             this.stratumV1JobsService.getNextId(),
             payoutInformation,
-            jobTemplate,
-            this.configService.get('POOL_IDENTIFIER') || 'Public-Pool'
+            jobTemplate
         );
 
         this.stratumV1JobsService.addJob(job);
@@ -489,6 +461,7 @@ export class StratumV1Client {
         if (!success) {
             return;
         }
+        this.lastSentMiningJobTimestamp = jobTemplate.block.timestamp;
 
 
         //console.log(`Sent new job to ${this.clientAuthorization.worker}.${this.extraNonceAndSessionId}. (clearJobs: ${jobTemplate.blockData.clearJobs}, fee?: ${!this.noFee})`)
@@ -497,13 +470,13 @@ export class StratumV1Client {
 
 
     private async ensureClientEntity() {
-        if (this.clientEntity != null) {
+        if (this.entity != null) {
             return;
         }
 
         if (this.creatingEntity == null) {
             this.creatingEntity = (async () => {
-                this.clientEntity = await this.clientService.insert({
+                this.entity = await this.clientService.insert({
                     sessionId: this.extraNonceAndSessionId,
                     address: this.clientAuthorization.address,
                     clientName: this.clientAuthorization.worker,
@@ -534,7 +507,6 @@ export class StratumV1Client {
             }
             return false;
         }
-
         const jobTemplate = this.stratumV1JobsService.getJobTemplateById(job.jobTemplateId);
 
         if (jobTemplate == null) {
@@ -586,15 +558,9 @@ export class StratumV1Client {
         const { submissionDifficulty } = this.calculateDifficulty(header);
 
         //console.log(`DIFF: ${submissionDifficulty} of ${this.sessionDifficulty} from ${this.clientAuthorization.worker + '.' + this.extraNonceAndSessionId}`);
-        const effectiveDiff = effectiveJobDifficulty(
-            parseInt(submission.jobId, 16),
-            this.sessionDifficulty,
-            this.oldSessionDifficulty,
-            this.diffChangeJobId,
-        );
 
 
-        if (submissionDifficulty >= effectiveDiff) {
+        if (submissionDifficulty >= this.sessionDifficulty) {
             const success = await this.write(JSON.stringify(submission.response()) + '\n');
             if (!success) {
                 return false;
@@ -612,7 +578,6 @@ export class StratumV1Client {
                 );
                 const blockHex = updatedJobBlock.toHex(false);
                 const result = await this.bitcoinRpcService.SUBMIT_BLOCK(blockHex);
-                if (result === 'SUCCESS!') {
                 await this.blocksService.save({
                     height: jobTemplate.blockData.height,
                     minerAddress: this.clientAuthorization.address,
@@ -622,32 +587,44 @@ export class StratumV1Client {
                 });
 
                 await this.notificationService.notifySubscribersBlockFound(this.clientAuthorization.address, jobTemplate.blockData.height, updatedJobBlock, result);
+                //success
+                if (result == null) {
                     await this.addressSettingsService.resetBestDifficultyAndShares();
-                } else {
-                    console.warn(`[Block submit rejected at height ${jobTemplate.blockData.height}]: ${result}`);
                 }
             }
             await this.ensureClientEntity();
             try {
-                await this.statistics.addShares(this.clientEntity, effectiveDiff);
+                await this.statistics.addShares(this.entity, this.sessionDifficulty);
                 const now = new Date();
                 // only update every minute
-                //if (this.clientEntity.updatedAt == null || now.getTime() - this.clientEntity.updatedAt.getTime() > 1000 * 60) {
-                this.clientService.heartbeatBulkAsync(this.clientEntity.id, this.statistics.hashRate, now);
-                this.clientEntity.updatedAt = now;
-                //}
+                if (this.entity.updatedAt == null || now.getTime() - this.entity.updatedAt.getTime() > 1000 * 60) {
+                    await this.clientService.heartbeat(this.entity.address, this.entity.clientName, this.entity.sessionId, this.hashRate, now);
+                    this.entity.updatedAt = now;
+                }
 
             } catch (e) {
                 console.log(e);
             }
 
-            if (submissionDifficulty > this.clientEntity.bestDifficulty) {
-                await this.clientService.updateBestDifficultyIfHigher(this.clientEntity.id, submissionDifficulty);
-                this.clientEntity.bestDifficulty = submissionDifficulty;
-                await this.addressSettingsService.updateBestDifficultyIfHigher(this.clientAuthorization.address, submissionDifficulty, this.clientEntity.userAgent);
+            if (submissionDifficulty > this.entity.bestDifficulty) {
+                await this.clientService.updateBestDifficultyIfHigher(this.extraNonceAndSessionId, submissionDifficulty);
+                this.entity.bestDifficulty = submissionDifficulty;
+                await this.addressSettingsService.updateBestDifficultyIfHigher(this.clientAuthorization.address, submissionDifficulty, this.entity.userAgent);
             }
 
 
+            const externalShareSubmissionEnabled: boolean = this.configService.get('EXTERNAL_SHARE_SUBMISSION_ENABLED')?.toLowerCase() == 'true';
+            const minimumDifficulty: number = parseFloat(this.configService.get('MINIMUM_DIFFICULTY')) || 1000000000000.0; // 1T
+            if (externalShareSubmissionEnabled && submissionDifficulty >= minimumDifficulty) {
+                // Submit share to API if enabled
+                this.externalSharesService.submitShare({
+                    worker: this.clientAuthorization.worker,
+                    address: this.clientAuthorization.address,
+                    userAgent: this.clientSubscription.userAgent,
+                    header: header.toString('hex'),
+                    externalPoolName: this.configService.get('POOL_IDENTIFIER') || 'Public-Pool'
+                });
+            }
 
         } else {
             const err = new StratumErrorMessage(
@@ -676,11 +653,6 @@ export class StratumV1Client {
 
         if (targetDiff != this.sessionDifficulty) {
             //console.log(`Adjusting ${this.extraNonceAndSessionId} difficulty from ${this.sessionDifficulty} to ${targetDiff}`);
-            if (!Number.isFinite(targetDiff)) {
-                return;
-            }
-            this.oldSessionDifficulty = this.sessionDifficulty;
-            this.diffChangeJobId = parseInt(this.stratumV1JobsService.getNextId(), 16);
             this.sessionDifficulty = targetDiff;
 
             const data = JSON.stringify({
@@ -690,15 +662,24 @@ export class StratumV1Client {
             }) + '\n';
 
 
-            const success = await this.write(data);
-            if (!success) {
-                return;
-            }
+            await this.socket.write(data);
 
             const jobTemplate = await firstValueFrom(this.stratumV1JobsService.newMiningJob$);
-            // we need to clear the jobs so that the difficulty set takes effect. Otherwise the different miner implementations can cause issues
-            jobTemplate.blockData.clearJobs = true;
-            await this.sendNewMiningJob(jobTemplate);
+            const nextTimestamp = Math.max(
+                jobTemplate.block.timestamp,
+                Math.floor(Date.now() / 1000),
+                (this.lastSentMiningJobTimestamp ?? 0) + 1
+            );
+            // We need to clear jobs so the difficulty takes effect, but avoid mutating or
+            // re-sending the shared cached template with byte-identical work.
+            const refreshedJobTemplate: IJobTemplate = {
+                ...jobTemplate,
+                block: Object.assign(new bitcoinjs.Block(), jobTemplate.block, {
+                    timestamp: nextTimestamp
+                }),
+                blockData: { ...jobTemplate.blockData, clearJobs: true }
+            };
+            await this.sendNewMiningJob(refreshedJobTemplate);
 
         }
     }
@@ -824,7 +805,7 @@ export class StratumV1Client {
 
                 return true;
             } else {
-                //console.error(`Error: Cannot write to closed or ended socket. ${this.extraNonceAndSessionId} ${message}`);
+                console.error(`Error: Cannot write to closed or ended socket. ${this.extraNonceAndSessionId} ${message}`);
                 this.destroy();
                 if (!this.socket.destroyed) {
                     this.socket.destroy();
@@ -838,7 +819,7 @@ export class StratumV1Client {
             } else if (!this.socket.destroyed) {
                 this.socket.destroy();
             }
-            //console.error(`Error occurred while writing to socket: ${this.extraNonceAndSessionId}`, error);
+            console.error(`Error occurred while writing to socket: ${this.extraNonceAndSessionId}`, error);
             return false;
         }
     }

src/models/StratumV1ClientStatistics.spec.ts

@@ -10,7 +10,7 @@ describe('StratumV1ClientStatistics', () => {
 
     let clientStatisticsService: {
         insert: jest.Mock,
-        updateBulkAsync: jest.Mock
+        update: jest.Mock
     };
     let statistics: StratumV1ClientStatistics;
 
@@ -19,7 +19,7 @@ describe('StratumV1ClientStatistics', () => {
         jest.setSystemTime(new Date('2026-05-06T12:00:00Z'));
         clientStatisticsService = {
             insert: jest.fn().mockResolvedValue(undefined),
-            updateBulkAsync: jest.fn().mockResolvedValue(undefined)
+            update: jest.fn().mockResolvedValue(undefined)
         };
         statistics = new StratumV1ClientStatistics(clientStatisticsService as any);
     });
@@ -33,7 +33,6 @@ describe('StratumV1ClientStatistics', () => {
 
         expect(clientStatisticsService.insert).toHaveBeenCalledWith({
             time: new Date('2026-05-06T12:00:00Z').getTime(),
-            clientId: client.id,
             shares: 64,
             acceptedCount: 1,
             address: client.address,
@@ -44,13 +43,16 @@ describe('StratumV1ClientStatistics', () => {
 
     it('should update the current share bucket for additional shares', async () => {
         await statistics.addShares(client, 64);
+        jest.setSystemTime(new Date('2026-05-06T12:01:01Z'));
         await statistics.addShares(client, 32);
 
-        expect(clientStatisticsService.updateBulkAsync).toHaveBeenCalledWith({
+        expect(clientStatisticsService.update).toHaveBeenCalledWith({
             time: new Date('2026-05-06T12:00:00Z').getTime(),
-            clientId: client.id,
             shares: 96,
-            acceptedCount: 2
+            acceptedCount: 2,
+            address: client.address,
+            clientName: client.clientName,
+            sessionId: client.sessionId
         });
     });
 
@@ -60,15 +62,16 @@ describe('StratumV1ClientStatistics', () => {
 
         await statistics.addShares(client, 32);
 
-        expect(clientStatisticsService.updateBulkAsync).toHaveBeenCalledWith({
+        expect(clientStatisticsService.update).toHaveBeenCalledWith({
             time: new Date('2026-05-06T12:00:00Z').getTime(),
-            clientId: client.id,
             shares: 64,
-            acceptedCount: 1
+            acceptedCount: 1,
+            address: client.address,
+            clientName: client.clientName,
+            sessionId: client.sessionId
         });
         expect(clientStatisticsService.insert).toHaveBeenLastCalledWith({
             time: new Date('2026-05-06T12:10:00Z').getTime(),
-            clientId: client.id,
             shares: 32,
             acceptedCount: 1,
             address: client.address,
@@ -81,10 +84,10 @@ describe('StratumV1ClientStatistics', () => {
         expect(statistics.getSuggestedDifficulty(64)).toBeNull();
     });
 
-    it('should lower difficulty when a miner has not submitted shares for more than a minute', () => {
-        jest.setSystemTime(new Date('2026-05-06T12:01:01Z'));
+    it('should lower difficulty when a miner has not submitted shares for several minutes', () => {
+        jest.setSystemTime(new Date('2026-05-06T12:06:00Z'));
 
-        expect(statistics.getSuggestedDifficulty(64)).toBe(12);
+        expect(statistics.getSuggestedDifficulty(64)).toBe(8);
     });
 
     it('should increase difficulty for rapid submissions', async () => {
@@ -93,7 +96,7 @@ describe('StratumV1ClientStatistics', () => {
             await statistics.addShares(client, 64);
         }
 
-        expect(statistics.getSuggestedDifficulty(64)).toBe(2048);
+        expect(statistics.getSuggestedDifficulty(64)).toBe(512);
     });
 
     it('should decrease difficulty for slow submissions', async () => {
@@ -102,6 +105,6 @@ describe('StratumV1ClientStatistics', () => {
             await statistics.addShares(client, 64);
         }
 
-        expect(statistics.getSuggestedDifficulty(128)).toBe(16);
+        expect(statistics.getSuggestedDifficulty(128)).toBe(4);
     });
 });

src/models/StratumV1ClientStatistics.ts

@@ -2,29 +2,33 @@ import { ClientStatisticsService } from '../ORM/client-statistics/client-statist
 import { ClientEntity } from '../ORM/client/client.entity';
 
 const CACHE_SIZE = 30;
-const MIN_DIFF = 0.001;
+const TARGET_SUBMISSION_PER_SECOND = 10;
+const MIN_DIFF = 0.00001;
 export class StratumV1ClientStatistics {
 
-    public targetSubmitShareEveryNSeconds: number = 30;
-    public hashRate = 0;
-
     private shares: number = 0;
     private acceptedCount: number = 0;
 
     private submissionCacheStart: Date;
     private submissionCache: { time: Date, difficulty: number }[] = [];
-    private submissionCacheDifficultySum = 0;
 
     private currentTimeSlot: number = null;
+    private lastSave: number = null;
+	
+	public hashRate = 0;
+
+    private previousTimeSlotTime: Date;
+    private currentTimeSlotTime: Date;
+
+    private previousShares: number = 0;
 
     constructor(
-        private readonly clientStatisticsService: ClientStatisticsService,
+        private readonly clientStatisticsService: ClientStatisticsService
     ) {
         this.submissionCacheStart = new Date();
     }
 
 
-
     // We don't want to save them here because it can be DB intensive, instead do it every once in
     // awhile with saveShares()
     public async addShares(client: ClientEntity, targetDifficulty: number) {
@@ -35,77 +39,89 @@ export class StratumV1ClientStatistics {
         var timeSlot = new Date(Math.floor(date.getTime() / coeff) * coeff).getTime();
 
         if (this.submissionCache.length > CACHE_SIZE) {
-            this.submissionCacheDifficultySum -= this.submissionCache[0].difficulty;
             this.submissionCache.shift();
         }
         this.submissionCache.push({
             time: date,
             difficulty: targetDifficulty,
         });
-        this.submissionCacheDifficultySum += targetDifficulty;
+
 
         if (this.currentTimeSlot == null) {
             // First record, insert it
+			this.previousTimeSlotTime = new Date();
+            this.currentTimeSlotTime = new Date();
             this.currentTimeSlot = timeSlot;
             this.shares += targetDifficulty;
             this.acceptedCount++;
             await this.clientStatisticsService.insert({
                 time: this.currentTimeSlot,
-                clientId: client.id,
                 shares: this.shares,
                 acceptedCount: this.acceptedCount,
                 address: client.address,
                 clientName: client.clientName,
                 sessionId: client.sessionId
             });
+            this.lastSave = new Date().getTime();
         } else if (this.currentTimeSlot != timeSlot) {
             // Transitioning to a new time slot,
             // First update the old time slot with the latest data
-            this.clientStatisticsService.updateBulkAsync({
+            await this.clientStatisticsService.update({
                 time: this.currentTimeSlot,
-                clientId: client.id,
                 shares: this.shares,
                 acceptedCount: this.acceptedCount,
+                address: client.address,
+                clientName: client.clientName,
+                sessionId: client.sessionId
             });
+			 this.previousShares = this.shares;
+            this.previousTimeSlotTime = this.currentTimeSlotTime;
+            this.currentTimeSlotTime = new Date();
             // Set the new time slot and add incoming shares then insert it
             this.currentTimeSlot = timeSlot;
             this.shares = targetDifficulty;
             this.acceptedCount = 1
             await this.clientStatisticsService.insert({
                 time: this.currentTimeSlot,
-                clientId: client.id,
                 shares: this.shares,
                 acceptedCount: this.acceptedCount,
                 address: client.address,
                 clientName: client.clientName,
                 sessionId: client.sessionId
             });
+            this.lastSave = new Date().getTime();
+        } else if ((date.getTime() - 60 * 1000) > this.lastSave) {
+            // If we haven't saved for a minute, update the table
+            this.shares += targetDifficulty;
+            this.acceptedCount++;
+            await this.clientStatisticsService.update({
+                time: this.currentTimeSlot,
+                shares: this.shares,
+                acceptedCount: this.acceptedCount,
+                address: client.address,
+                clientName: client.clientName,
+                sessionId: client.sessionId
+            });
+            this.lastSave = new Date().getTime();
         } else {
             // Accept the shares if none of the prior conditions are met,
             // saving to memory for storing later
             this.shares += targetDifficulty;
             this.acceptedCount++;
-            this.clientStatisticsService.updateBulkAsync({
-                time: this.currentTimeSlot,
-                clientId: client.id,
-                shares: this.shares,
-                acceptedCount: this.acceptedCount,
-            });
-        }
-
-        const time = new Date().getTime() - this.submissionCache[0].time.getTime();
-        if(time > 60000 && this.submissionCache.length > 2) { 
-            this.hashRate = (this.submissionCacheDifficultySum * 4294967296) / (time / 1000);
+			if(this.shares > 0) {
+            const time = new Date().getTime() - this.previousTimeSlotTime.getTime();
+            this.hashRate = ((this.previousShares + this.shares) * 4294967296) / (time / 1000);
         }
         }
 
+    }
 
     public getSuggestedDifficulty(clientDifficulty: number) {
 
         // miner hasn't submitted shares in one minute
         if (this.submissionCache.length < 5) {
             if ((new Date().getTime() - this.submissionCacheStart.getTime()) / 1000 > 60) {
-                return this.nearestDifficultyStep(clientDifficulty / 6);
+                return this.nearestPowerOfTwo(clientDifficulty / 6);
             } else {
                 return null;
             }
@@ -116,45 +132,39 @@ export class StratumV1ClientStatistics {
             return pre;
         }, 0);
         const diffSeconds = (this.submissionCache[this.submissionCache.length - 1].time.getTime() - this.submissionCache[0].time.getTime()) / 1000;
-        if (diffSeconds <= 0) {
-            return null;
-        }
 
         const difficultyPerSecond = sum / diffSeconds;
 
-        const targetDifficulty = difficultyPerSecond * this.targetSubmitShareEveryNSeconds;
-        if (!Number.isFinite(difficultyPerSecond) || !Number.isFinite(targetDifficulty)) {
-            return null;
-        }
+        const targetDifficulty = difficultyPerSecond * TARGET_SUBMISSION_PER_SECOND;
 
         if ((clientDifficulty * 2) < targetDifficulty || (clientDifficulty / 2) > targetDifficulty) {
-            return this.nearestDifficultyStep(targetDifficulty)
+            return this.nearestPowerOfTwo(targetDifficulty)
         }
 
         return null;
     }
 
-    private nearestDifficultyStep(val: number): number {
+    private nearestPowerOfTwo(val): number {
         if (val === 0) {
             return null;
         }
         if (val < MIN_DIFF) {
             return MIN_DIFF;
         }
-
-        const exponent = Math.floor(Math.log2(val));
-        const lower = 2 ** exponent;
-        const middle = lower + lower / 2;
-        const upper = lower * 2;
-
-        const distances = [
-            { value: lower, diff: Math.abs(val - lower) },
-            { value: middle, diff: Math.abs(val - middle) },
-            { value: upper, diff: Math.abs(val - upper) },
-        ];
-
-        distances.sort((a, b) => a.diff - b.diff);
-        return distances[0].value;
+        let x = val | (val >> 1);
+        x = x | (x >> 2);
+        x = x | (x >> 4);
+        x = x | (x >> 8);
+        x = x | (x >> 16);
+        x = x | (x >> 32);
+        const res = x - (x >> 1);
+        if (res == 0 && val * 100 < MIN_DIFF) {
+            return MIN_DIFF;
+        }
+        if (res == 0) {
+            return this.nearestPowerOfTwo(val * 100) / 100;
+        }
+        return res;
     }
 
 }

src/models/stratum-messages/AuthorizationMessage.spec.ts

@@ -25,6 +25,15 @@ describe('AuthorizationMessage', () => {
         expect(message.startingDiff).toBeNull();
     });
 
+    it('should ignore malformed starting difficulty hints', () => {
+        const message = plainToInstance(
+            AuthorizationMessage,
+            JSON.parse('{"id":3,"method":"mining.authorize","params":["tb1qumezefzdeqqwn5zfvgdrhxjzc5ylr39uhuxcz4.worker1","x,d=abc"]}')
+        );
+
+        expect(message.startingDiff).toBeNull();
+    });
+
     it('should build successful authorization responses', () => {
         const message = plainToInstance(
             AuthorizationMessage,

src/models/stratum-messages/AuthorizationMessage.ts

@@ -24,27 +24,23 @@ export class AuthorizationMessage extends StratumBaseMessage {
     @IsString()
     @MaxLength(64)
     @Transform(({ value, key, obj, type }) => {
-        const workerName = obj.params[0].split('.')[1];
-        if (workerName == null) {
-            return 'worker';
-        }
-        return workerName;
+        return obj.params[0].split('.')[1] == null ? 'worker' : obj.params[0].split('.')[1];
     })
     public worker: string;
 
-
     @Expose()
     @IsNumber()
     @Transform(({ value, key, obj, type }) => {
         const password: string | null = obj.params[1];
-        if (password?.includes('d=')) {
-            return parseInt(password.split('d=')[1]);
+        const difficultyMatch = password?.match(/(?:^|,)d=(\d+)(?:,|$)/);
+        if (difficultyMatch != null) {
+            const startingDiff = Number.parseInt(difficultyMatch[1], 10);
+            return Number.isFinite(startingDiff) ? startingDiff : null;
         }
         return null;
     })
     @IsOptional()
-    public startingDiff: number;
-
+    public startingDiff?: number;
 
     @Expose()
     @IsString()

src/models/stratum-messages/MiningSubmitMessage.spec.ts

@@ -58,29 +58,6 @@ describe('MiningSubmitMessage', () => {
 
             expect(errors.some(error => error.property === 'extraNonce2')).toBe(true);
         });
-
-        it('should hash submit fields without concatenation ambiguity', () => {
-            const first = plainToInstance(
-                MiningSubmitMessage,
-                {
-                    id: 5,
-                    method: 'mining.submit',
-                    params: ['worker', 'e', '9902000000000000', 'd', 'bc', 'a']
-                },
-            );
-            const second = plainToInstance(
-                MiningSubmitMessage,
-                {
-                    id: 5,
-                    method: 'mining.submit',
-                    params: ['worker', 'e', '9902000000000000', 'd', 'c', 'ab']
-                },
-            );
-
-            expect(first.versionMask + first.nonce + first.extraNonce2 + first.ntime + first.jobId)
-                .toBe(second.versionMask + second.nonce + second.extraNonce2 + second.ntime + second.jobId);
-            expect(first.hash()).not.toBe(second.hash());
-        });
     });
 
 

src/models/stratum-messages/MiningSubmitMessage.ts

@@ -68,14 +68,8 @@ export class MiningSubmitMessage extends StratumBaseMessage {
     }
 
     public hash(): string{
-        const canonical = JSON.stringify({
-            versionMask: this.versionMask ?? '',
-            nonce: this.nonce,
-            extraNonce2: this.extraNonce2,
-            ntime: this.ntime,
-            jobId: this.jobId,
-        });
-        return bitcoinjs.crypto.hash256(Buffer.from(canonical)).toString('base64');
+        const buffer = Buffer.from(this.versionMask + this.nonce + this.extraNonce2 + this.ntime + this.jobId);
+        return bitcoinjs.crypto.hash256(buffer).toString('base64');
     }
 
 

src/services/app.service.ts

@@ -1,10 +1,8 @@
 import { Injectable, OnModuleInit } from '@nestjs/common';
 import { DataSource } from 'typeorm';
 
-import { UserAgentReportService } from '../ORM/_views/user-agent-report/user-agent-report.service';
 import { ClientStatisticsService } from '../ORM/client-statistics/client-statistics.service';
 import { ClientService } from '../ORM/client/client.service';
-import { HomeGraphService } from '../ORM/home-graph/home-graph.service';
 import { RpcBlockService } from '../ORM/rpc-block/rpc-block.service';
 
 @Injectable()
@@ -13,16 +11,26 @@ export class AppService implements OnModuleInit {
     constructor(
         private readonly clientStatisticsService: ClientStatisticsService,
         private readonly clientService: ClientService,
-        private readonly rpcBlockService: RpcBlockService,
-        private readonly homeGraphService: HomeGraphService,
         private readonly dataSource: DataSource,
-        private readonly userAgentReportService: UserAgentReportService
+        private readonly rpcBlockService: RpcBlockService,
     ) {
 
     }
 
     async onModuleInit() {
-        if (process.env.MASTER == 'true') {
+        // if (process.env.NODE_APP_INSTANCE == '0') {
+        //     await this.dataSource.query(`VACUUM;`);
+        // }
+
+        //https://phiresky.github.io/blog/2020/sqlite-performance-tuning/
+        // //500 MB DB cache
+        // await this.dataSource.query(`PRAGMA cache_size = -500000;`);
+        //Normal is still completely corruption safe in WAL mode, and means only WAL checkpoints have to wait for FSYNC. 
+        await this.dataSource.query(`PRAGMA synchronous = off;`);
+        // //6Gb
+        // await this.dataSource.query(`PRAGMA mmap_size = 6000000000;`);
+
+        if (process.env.NODE_APP_INSTANCE == null || process.env.NODE_APP_INSTANCE == '0') {
 
             setInterval(async () => {
                 await this.deleteOldStatistics();
@@ -30,10 +38,7 @@ export class AppService implements OnModuleInit {
 
             setInterval(async () => {
                 console.log('Killing dead clients');
-                while (await this.clientService.killDeadClients()) {
-
-                }
-                console.log('Finished killing clients');
+                await this.clientService.killDeadClients();
             }, 1000 * 60 * 5);
 
             setInterval(async () => {
@@ -41,29 +46,10 @@ export class AppService implements OnModuleInit {
                 await this.rpcBlockService.deleteOldBlocks();
             }, 1000 * 60 * 60 * 24);
 
-            setInterval(async () => {
-                await this.updateChart();
-            }, 1000 * 60 * 10);
 
-            setInterval(async () => {
-                console.log('Refreshing user agent report view')
-                await this.userAgentReportService.refreshReport();
-                console.log('Finished Refreshing user agent report view')
-            }, 1000 * 60 * 5);
 
         }
 
-        setInterval(async () => {
-            //console.log('Bulk update client stats');
-            await this.clientStatisticsService.doBulkAsyncUpdate();
-        }, 1000 * 30);
-
-        setInterval(async () => {
-            //console.log('Bulk update client stats');
-            await this.clientService.doBulkHeartbeatUpdate();
-        }, 1000 * 30);
-
-
     }
 
     private async deleteOldStatistics() {
@@ -77,36 +63,4 @@ export class AppService implements OnModuleInit {
     }
 
 
-    private async updateChart() {
-        console.log('Updating Chart');
-
-        const latestGraphUpdate = await this.homeGraphService.getLatestTime();
-
-
-        const data = await this.dataSource.query(`
-            SELECT
-                time AS label,
-                ROUND(((SUM(shares) * 4294967296) / 600)) AS data
-            FROM
-                client_statistics_entity AS entry
-            WHERE
-                entry.time > ${latestGraphUpdate.getTime()}
-            GROUP BY
-                time
-            ORDER BY
-                time
-            LIMIT 144;
-        `)
-
-        console.log(`Fetched ${data.length} rows`);
-
-        if (data.length < 2) {
-            return;
-        }
-
-        const result = data.slice(0, data.length - 1);
-
-        this.homeGraphService.save(result);
-
-    }
 }

src/services/bitcoin-rpc.service.ts

@@ -1,51 +1,43 @@
 import { Injectable, OnModuleInit } from '@nestjs/common';
 import { ConfigService } from '@nestjs/config';
 import axios, { AxiosInstance } from 'axios';
-import { asyncScheduler, BehaviorSubject, delay, filter, from, interval, scheduled, shareReplay, startWith, Subject, switchMap } from 'rxjs';
-import { RpcBlockService } from '../ORM/rpc-block/rpc-block.service';
+import * as fs from 'node:fs';
+import { BehaviorSubject, filter, shareReplay } from 'rxjs';
 import * as zmq from 'zeromq';
 
+import { RpcBlockService } from '../ORM/rpc-block/rpc-block.service';
 import { IBlockTemplate } from '../models/bitcoin-rpc/IBlockTemplate';
 import { IMiningInfo } from '../models/bitcoin-rpc/IMiningInfo';
-import * as PGPubsub from 'pg-pubsub';
-import * as fs from 'node:fs';
 
 @Injectable()
 export class BitcoinRpcService implements OnModuleInit {
 
-    
+    private blockHeight = 0;
     private client: AxiosInstance;
-    private _newBlockTemplate$: BehaviorSubject<IBlockTemplate> = new BehaviorSubject(undefined);
-    private pubsubInstance: PGPubsub;
-    private resetTemplateInterval$ = new Subject<void>();
     private rpcRequestId = 0;
-
-    public miningInfo: IMiningInfo;
-    public newBlockTemplate$ = this._newBlockTemplate$.pipe(filter(block => block != null), shareReplay({ refCount: true, bufferSize: 1 }));
+    private _newBlock$: BehaviorSubject<IMiningInfo> = new BehaviorSubject(undefined);
+    public newBlock$ = this._newBlock$.pipe(filter(block => block != null), shareReplay({ refCount: true, bufferSize: 1 }));
 
     constructor(
         private readonly configService: ConfigService,
         private rpcBlockService: RpcBlockService
     ) {
-
     }
 
     async onModuleInit() {
-
-        this.pubsubInstance = new PGPubsub('postgres://' + this.configService.get('DB_USERNAME') + ':' + this.configService.get('DB_PASSWORD') + '@' + this.configService.get('DB_HOST') + ':' + this.configService.get('DB_PORT') + '/' + this.configService.get('DB_DATABASE'))
-
-
         const url = this.configService.get('BITCOIN_RPC_URL');
         let user = this.configService.get('BITCOIN_RPC_USER');
         let pass = this.configService.get('BITCOIN_RPC_PASSWORD');
         const port = parseInt(this.configService.get('BITCOIN_RPC_PORT'));
         const timeout = parseInt(this.configService.get('BITCOIN_RPC_TIMEOUT'));
+
         const cookiefile = this.configService.get('BITCOIN_RPC_COOKIEFILE');
 
-        if (cookiefile != null && cookiefile !== '') {
-            const [cookieUser, cookiePass] = fs.readFileSync(cookiefile).toString().trim().split(':');
-            user = cookieUser;
-            pass = cookiePass;
+        if (cookiefile != undefined && cookiefile != '') {
+            const cookie = fs.readFileSync(cookiefile).toString().trim().split(':');
+
+            user = cookie[0];
+            pass = cookie[1];
         }
 
         const baseURL = this.buildRpcUrl(url, port);
@@ -58,72 +50,101 @@ export class BitcoinRpcService implements OnModuleInit {
             }
         });
 
-        this.callRpc('getrpcinfo').then((res) => {
+        this.callRpc('getrpcinfo').then(() => {
             console.log('Bitcoin RPC connected');
         }, () => {
             console.error('Could not reach RPC host');
         });
 
-        this.miningInfo = await this.getMiningInfo();
-
-        console.log(`MASTER? ${process.env.MASTER}`)
-        if (process.env.MASTER != 'true') {
-            this.pubsubInstance.addChannel('miningInfo', async (miningInfo: IMiningInfo) => {
-                //console.log('PG Sub. new template');
-                this.miningInfo = miningInfo;
-                const savedBlockTemplate = await this.rpcBlockService.getSavedBlockTemplate(miningInfo.blocks);
-                this._newBlockTemplate$.next(JSON.parse(savedBlockTemplate.data));
-            });
-        } else {
+        if (this.configService.get('BITCOIN_ZMQ_HOST')) {
             console.log('Using ZMQ');
             const sock = new zmq.Subscriber;
 
+
             sock.connectTimeout = 1000;
             sock.events.on('connect', () => {
                 console.log('ZMQ Connected');
             });
             sock.events.on('connect:retry', () => {
-                console.error('ZMQ Unable to connect, Retrying');
+                console.log('ZMQ Unable to connect, Retrying');
             });
 
             sock.connect(this.configService.get('BITCOIN_ZMQ_HOST'));
             sock.subscribe('rawblock');
             // Don't await this, otherwise it will block the rest of the program
             this.listenForNewBlocks(sock);
+            await this.pollMiningInfo();
 
-            // Between new blocks we want refresh jobs with the latest transactions
-            this.resetTemplateInterval$.pipe(
-                startWith(null),
-                switchMap(() =>interval(60000))
-            ).subscribe(async () =>{
-                await this.getAndBroadcastLatestTemplate();
-            });
-
+        } else {
+            setInterval(this.pollMiningInfo.bind(this), 500);
         }
-
     }
 
     private async listenForNewBlocks(sock: zmq.Subscriber) {
         for await (const [topic, msg] of sock) {
             console.log("New Block");
-            this.miningInfo = await this.getMiningInfo();
-            await this.getAndBroadcastLatestTemplate();
-
-            //Reset the block update interval
-            this.resetTemplateInterval$.next();
+            await this.pollMiningInfo();
         }
     }
 
-    public async getAndBroadcastLatestTemplate() {
-        const blockTemplate = await this.loadBlockTemplate(this.miningInfo.blocks);
-        this._newBlockTemplate$.next(blockTemplate);
-        await this.pubsubInstance.publish('miningInfo', this.miningInfo);
+    public async pollMiningInfo() {
+        const miningInfo = await this.getMiningInfo();
+        if (miningInfo != null && miningInfo.blocks > this.blockHeight) {
+            console.log("block height change");
+            this._newBlock$.next(miningInfo);
+            this.blockHeight = miningInfo.blocks;
+        }
+    }
+
+    private async waitForBlock(blockHeight: number): Promise<IBlockTemplate> {
+        while (true) {
+            await new Promise(r => setTimeout(r, 100));
+
+            const block = await this.rpcBlockService.getBlock(blockHeight);
+            if (block != null && block.data != null) {
+                console.log(`promise loop resolved, block height ${blockHeight}`);
+                return Promise.resolve(JSON.parse(block.data));
+            }
+            console.log(`promise loop, block height ${blockHeight}`);
+        }
+    }
+
+    public async getBlockTemplate(blockHeight: number): Promise<IBlockTemplate> {
+        let result: IBlockTemplate;
+        try {
+            const block = await this.rpcBlockService.getBlock(blockHeight);
+            const completeBlock = block?.data != null;
+
+            // If the block has already been loaded, and the same instance is fetching the template again, we just need to refresh it.
+            if (completeBlock && block.lockedBy == process.env.NODE_APP_INSTANCE) {
+                result = await this.loadBlockTemplate(blockHeight);
+            }
+            else if (completeBlock) {
+                return Promise.resolve(JSON.parse(block.data));
+            } else if (!completeBlock) {
+                if (process.env.NODE_APP_INSTANCE != null) {
+                    // There is a unique constraint on the block height so if another process tries to lock, it'll throw
+                    try {
+                        await this.rpcBlockService.lockBlock(blockHeight, process.env.NODE_APP_INSTANCE);
+                    } catch (e) {
+                        result = await this.waitForBlock(blockHeight);
+                    }
+                }
+                result = await this.loadBlockTemplate(blockHeight);
+            } else {
+                //wait for block
+                result = await this.waitForBlock(blockHeight);
+            }
+        } catch (e) {
+            console.error('Error getblocktemplate:', e.message);
+            throw new Error('Error getblocktemplate');
+        }
+        console.log(`getblocktemplate tx count: ${result.transactions.length}`);
+        return result;
     }
 
     private async loadBlockTemplate(blockHeight: number) {
 
-        console.log(`Master fetching block template ${blockHeight}`);
-
         let blockTemplate: IBlockTemplate;
         while (blockTemplate == null) {
             blockTemplate = await this.callRpc<IBlockTemplate>('getblocktemplate', [
@@ -135,13 +156,8 @@ export class BitcoinRpcService implements OnModuleInit {
             ]);
         }
 
-        try {
-            console.log(`Saving block ${blockHeight}`);
+
         await this.rpcBlockService.saveBlock(blockHeight, JSON.stringify(blockTemplate));
-            console.log('block saved');
-        } catch (e) {
-            console.error('Error saving block', e);
-        }
 
         return blockTemplate;
     }

src/services/discord.service.ts

@@ -34,7 +34,7 @@ export class DiscordService implements OnModuleInit {
 
 
     constructor(private readonly configService: ConfigService) {
-        if (process.env.MASTER == 'true') {
+        if (process.env.NODE_APP_INSTANCE == null || process.env.NODE_APP_INSTANCE == '0') {
             this.token = this.configService.get('DISCORD_BOT_TOKEN');
             this.clientId = this.configService.get('DISCORD_BOT_CLIENTID');
             this.guildId = this.configService.get('DISCORD_BOT_GUILD_ID');
@@ -61,7 +61,7 @@ export class DiscordService implements OnModuleInit {
 
     async onModuleInit(): Promise<void> {
 
-        if (process.env.MASTER == 'true') {
+        if (process.env.NODE_APP_INSTANCE == null || process.env.NODE_APP_INSTANCE == '0') {
             if (this.bot == null) {
                 return;
             }
@@ -93,7 +93,7 @@ export class DiscordService implements OnModuleInit {
     }
 
     private async registerCommands() {
-        if (process.env.MASTER == 'true') {
+        if (process.env.NODE_APP_INSTANCE == null || process.env.NODE_APP_INSTANCE == '0') {
             const rest = new REST().setToken(this.token);
             try {
                 console.log(`Started refreshing ${commands.length} application (/) commands.`);
@@ -113,7 +113,7 @@ export class DiscordService implements OnModuleInit {
     }
 
     public async notifyRestarted() {
-        if (process.env.MASTER == 'true') {
+        if (process.env.NODE_APP_INSTANCE == null || process.env.NODE_APP_INSTANCE == '0') {
             if (this.bot == null) {
                 return;
             }
@@ -125,7 +125,7 @@ export class DiscordService implements OnModuleInit {
     }
 
     public async notifySubscribersBlockFound(height: number, block: Block, message: string) {
-        if (process.env.MASTER == 'true') {
+        if (process.env.NODE_APP_INSTANCE == null || process.env.NODE_APP_INSTANCE == '0') {
             if (this.bot == null) {
                 return;
             }

src/services/external-shares.service.ts

@@ -0,0 +1,31 @@
+import { Injectable } from '@nestjs/common';
+import { HttpService } from '@nestjs/axios';
+import { ConfigService } from '@nestjs/config';
+import { ExternalPoolShare } from '../models/ExternalPoolShare';
+
+@Injectable()
+export class ExternalSharesService {
+  private readonly shareApiUrl: string;
+  private readonly shareApiKey: string;
+
+  constructor(
+    private readonly configService: ConfigService,
+    private readonly httpService: HttpService
+  ) {
+    this.shareApiUrl = this.configService.get('SHARE_SUBMISSION_URL') || 'https://web.public-pool.io';
+    this.shareApiKey = this.configService.get('SHARE_SUBMISSION_API_KEY');
+  }
+
+  public submitShare(share: ExternalPoolShare): void {
+    this.httpService.post(`${this.shareApiUrl}/api/share`, share, {
+      headers: {
+        'x-api-key': this.shareApiKey
+      }
+    }).subscribe({
+      next: () =>{
+        console.log('External share accepted');
+      },
+      error: (error) => console.error('Failed to submit share to API:', error.message)
+    });
+  }
+}

src/services/stratum-v1-jobs.service.spec.ts

@@ -1,17 +1,19 @@
-import { BehaviorSubject, firstValueFrom, skip } from 'rxjs';
+import { BehaviorSubject, firstValueFrom } from 'rxjs';
 
 import { MockRecording1 } from '../../test/models/MockRecording1';
+import { IMiningInfo } from '../models/bitcoin-rpc/IMiningInfo';
 import { IBlockTemplate } from '../models/bitcoin-rpc/IBlockTemplate';
 import { StratumV1JobsService } from './stratum-v1-jobs.service';
 
 describe('StratumV1JobsService', () => {
-    let blockTemplate$: BehaviorSubject<IBlockTemplate>;
-    let bitcoinRpcService: { newBlockTemplate$: any, miningInfo: { blocks: number } };
+    let miningInfo$: BehaviorSubject<IMiningInfo>;
+    let bitcoinRpcService: { newBlock$: any, getBlockTemplate: jest.Mock };
     let service: StratumV1JobsService;
     let consoleLogSpy: jest.SpyInstance;
 
     const createTemplate = (height = MockRecording1.BLOCK_TEMPLATE.height): IBlockTemplate => ({
         ...MockRecording1.BLOCK_TEMPLATE,
+        transactions: MockRecording1.BLOCK_TEMPLATE.transactions.map(tx => ({ ...tx })),
         height
     });
 
@@ -20,10 +22,12 @@ describe('StratumV1JobsService', () => {
         jest.setSystemTime(new Date(parseInt(MockRecording1.TIME, 16) * 1000));
         consoleLogSpy = jest.spyOn(console, 'log').mockImplementation(() => undefined);
 
-        blockTemplate$ = new BehaviorSubject(createTemplate());
+        miningInfo$ = new BehaviorSubject({
+            blocks: MockRecording1.BLOCK_TEMPLATE.height
+        } as IMiningInfo);
         bitcoinRpcService = {
-            newBlockTemplate$: blockTemplate$.asObservable(),
-            miningInfo: { blocks: MockRecording1.BLOCK_TEMPLATE.height }
+            newBlock$: miningInfo$.asObservable(),
+            getBlockTemplate: jest.fn((height: number) => Promise.resolve(createTemplate(height)))
         };
         service = new StratumV1JobsService(bitcoinRpcService as any);
     });
@@ -51,9 +55,10 @@ describe('StratumV1JobsService', () => {
         const firstTemplate = await firstValueFrom(service.newMiningJob$);
         service.addJob({ jobId: 'old-job', creation: Date.now() } as any);
 
-        bitcoinRpcService.miningInfo.blocks = MockRecording1.BLOCK_TEMPLATE.height + 1;
-        const nextTemplate = firstValueFrom(service.newMiningJob$.pipe(skip(1)));
-        blockTemplate$.next(createTemplate(MockRecording1.BLOCK_TEMPLATE.height + 1));
+        const nextTemplate = firstValueFrom(service.newMiningJob$);
+        miningInfo$.next({
+            blocks: MockRecording1.BLOCK_TEMPLATE.height + 1
+        } as IMiningInfo);
         const jobTemplate = await nextTemplate;
 
         expect(jobTemplate.blockData.clearJobs).toBe(true);
@@ -62,6 +67,45 @@ describe('StratumV1JobsService', () => {
         expect(service.getJobTemplateById(jobTemplate.blockData.id)).toBe(jobTemplate);
     });
 
+    it('should skip identical non-clean template refreshes', async () => {
+        await firstValueFrom(service.newMiningJob$);
+
+        miningInfo$.next({
+            blocks: MockRecording1.BLOCK_TEMPLATE.height
+        } as IMiningInfo);
+
+        expect(service.latestJobTemplateId).toBe(2);
+        expect(Object.keys(service.blocks)).toHaveLength(1);
+    });
+
+    it('should emit when transaction identity changes without changing transaction count', async () => {
+        await firstValueFrom(service.newMiningJob$);
+        const emissions = [];
+        const subscription = service.newMiningJob$.subscribe(jobTemplate => {
+            emissions.push(jobTemplate);
+        });
+        await Promise.resolve();
+
+        const changedTemplate = createTemplate();
+        changedTemplate.transactions[0] = {
+            ...changedTemplate.transactions[0],
+            hash: `${changedTemplate.transactions[0].hash}-changed`
+        };
+        bitcoinRpcService.getBlockTemplate.mockResolvedValueOnce(changedTemplate);
+
+        miningInfo$.next({
+            blocks: MockRecording1.BLOCK_TEMPLATE.height
+        } as IMiningInfo);
+        await Promise.resolve();
+        await Promise.resolve();
+        subscription.unsubscribe();
+        const jobTemplate = emissions[emissions.length - 1];
+
+        expect(jobTemplate.blockData.clearJobs).toBe(false);
+        expect(jobTemplate.blockData.id).toBe('2');
+        expect(service.getJobTemplateById(jobTemplate.blockData.id)).toBe(jobTemplate);
+    });
+
     it('should age old jobs and templates after five minutes', async () => {
         await firstValueFrom(service.newMiningJob$);
         const oldCreation = Date.now() - (1000 * 60 * 11);
@@ -70,9 +114,11 @@ describe('StratumV1JobsService', () => {
             blockData: { creation: oldCreation }
         } as any;
 
-        bitcoinRpcService.miningInfo.blocks = MockRecording1.BLOCK_TEMPLATE.height;
-        const nextTemplate = firstValueFrom(service.newMiningJob$.pipe(skip(1)));
-        blockTemplate$.next(createTemplate());
+        jest.setSystemTime(new Date(Date.now() + (1000 * 60 * 11)));
+        const nextTemplate = firstValueFrom(service.newMiningJob$);
+        miningInfo$.next({
+            blocks: MockRecording1.BLOCK_TEMPLATE.height
+        } as IMiningInfo);
         const jobTemplate = await nextTemplate;
 
         expect(jobTemplate.blockData.clearJobs).toBe(false);

src/services/stratum-v1-jobs.service.ts

@@ -25,41 +25,71 @@ export interface IJobTemplate {
 export class StratumV1JobsService {
 
     public newMiningJob$: Observable<IJobTemplate>;
+
     public latestJobId: number = 1;
     public latestJobTemplateId: number = 1;
+
     public jobs: { [jobId: string]: MiningJob } = {};
+
     public blocks: { [id: number]: IJobTemplate } = {};
 
+    // offset the interval so that all the cluster processes don't try and refresh at the same time.
+    private delay = process.env.NODE_APP_INSTANCE == null ? 0 : parseInt(process.env.NODE_APP_INSTANCE) * 5000;
     private lastBlockHeight = 0;
+    private lastWorkSignature: string;
 
     constructor(
         private readonly bitcoinRpcService: BitcoinRpcService
     ) {
 
-        this.newMiningJob$ = this.bitcoinRpcService.newBlockTemplate$.pipe(
-            map((blockTemplate) => {
+        const refreshInterval$ = this.delay > 0
+            ? interval(60000).pipe(delay(this.delay), startWith(-1))
+            : interval(60000).pipe(startWith(-1));
 
-                if (process.env.MASTER == 'true') {
-                    console.log('Updating block template');
+        this.newMiningJob$ = combineLatest([this.bitcoinRpcService.newBlock$, refreshInterval$]).pipe(
+            switchMap(([miningInfo, interval]) => {
+                return from(this.bitcoinRpcService.getBlockTemplate(miningInfo.blocks)).pipe(map((blockTemplate) => {
+                    return {
+                        blockTemplate,
+                        miningInfo
                     }
+                }))
+            }),
+            map(({ blockTemplate, miningInfo }) => {
 
                 let clearJobs = false;
-                const currentBlockHeight = this.bitcoinRpcService.miningInfo.blocks;
+                const currentBlockHeight = miningInfo.blocks;
 
-                if(this.lastBlockHeight == 0 || this.lastBlockHeight != currentBlockHeight){
-                    console.log('New template is new block, clearing jobs');
+                if (this.lastBlockHeight == 0 || this.lastBlockHeight != currentBlockHeight) {
                     clearJobs = true;
                     this.lastBlockHeight = currentBlockHeight;
+                    console.log('new block');
                 }
 
                 const currentTime = Math.floor(new Date().getTime() / 1000);
+                const timestamp = blockTemplate.mintime > currentTime ? blockTemplate.mintime : currentTime;
+                const workSignature = [
+                    blockTemplate.previousblockhash,
+                    blockTemplate.version,
+                    blockTemplate.bits,
+                    timestamp,
+                    blockTemplate.height,
+                    blockTemplate.coinbasevalue,
+                    ...blockTemplate.transactions.map(tx => tx.hash ?? tx.txid ?? tx.data)
+                ].join('|');
+
+                if (!clearJobs && workSignature === this.lastWorkSignature) {
+                    return null;
+                }
+                this.lastWorkSignature = workSignature;
+
                 return {
                     version: blockTemplate.version,
                     bits: parseInt(blockTemplate.bits, 16),
                     prevHash: this.convertToLittleEndian(blockTemplate.previousblockhash),
                     transactions: blockTemplate.transactions.map(t => bitcoinjs.Transaction.fromHex(t.data)),
                     coinbasevalue: blockTemplate.coinbasevalue,
-                    timestamp: blockTemplate.mintime > currentTime ? blockTemplate.mintime : currentTime,
+                    timestamp,
                     networkDifficulty: this.calculateNetworkDifficulty(parseInt(blockTemplate.bits, 16)),
                     clearJobs,
                     height: blockTemplate.height
@@ -109,13 +139,28 @@ export class StratumV1JobsService {
                 }
             }),
             tap((data) => {
-                this.cleanup(data.blockData.clearJobs);
+                if (data.blockData.clearJobs) {
+                    this.blocks = {};
+                    this.jobs = {};
+                }else{
+                    const now = new Date().getTime();
+                    // Delete old templates (5 minutes)
+                    for(const templateId in this.blocks){
+                        if(now - this.blocks[templateId].blockData.creation  > (1000 * 60 * 5)){
+                            delete this.blocks[templateId];
+                        }
+                    }
+                    // Delete old jobs (5 minutes)
+                    for (const jobId in this.jobs) {
+                        if(now - this.jobs[jobId].creation > (1000 * 60 * 5)){
+                            delete this.jobs[jobId];
+                        }
+                    }
+                }
                 this.blocks[data.blockData.id] = data;
             }),
             shareReplay({ refCount: true, bufferSize: 1 })
         )
-
-        this.newMiningJob$.subscribe();
     }
 
     private calculateNetworkDifficulty(nBits: number) {
@@ -140,32 +185,6 @@ export class StratumV1JobsService {
         return this.blocks[jobTemplateId];
     }
 
-    public cleanup(clearJobs: boolean, now: number = Date.now()) {
-        if (clearJobs) {
-            this.blocks = {};
-            this.jobs = {};
-            return;
-        }
-
-        let templatesDeleted = 0;
-        let jobsDeleted = 0;
-
-        for (const templateId in this.blocks) {
-            if (now - this.blocks[templateId].blockData.creation > (1000 * 60 * 5)) {
-                delete this.blocks[templateId];
-                templatesDeleted++;
-            }
-        }
-
-        for (const jobId in this.jobs) {
-            if (now - this.jobs[jobId].creation > (1000 * 60 * 5)) {
-                delete this.jobs[jobId];
-                jobsDeleted++;
-            }
-        }
-        //console.log(`Deleted ${templatesDeleted} templates and ${jobsDeleted} jobs.`)
-    }
-
     public addJob(job: MiningJob) {
         this.jobs[job.jobId] = job;
         this.latestJobId++;

src/services/stratum-v1.service.spec.ts

@@ -2,13 +2,15 @@ import { StratumV1Service } from './stratum-v1.service';
 
 describe('StratumV1Service', () => {
     const originalMaster = process.env.MASTER;
-    const originalStratumPorts = process.env.STRATUM_PORTS;
-    const originalStratumSecure = process.env.STRATUM_SECURE;
-    const originalSecureStratumPorts = process.env.SECURE_STRATUM_PORTS;
+    const originalNodeAppInstance = process.env.NODE_APP_INSTANCE;
+    const originalStratumPort = process.env.STRATUM_PORT;
+    const originalBackpressureEnabled = process.env.STRATUM_BACKPRESSURE_ENABLED;
+    const originalMaxConnectionsPerListener = process.env.STRATUM_MAX_CONNECTIONS_PER_LISTENER;
 
     let service: StratumV1Service;
     let clientService;
     let consoleLogSpy: jest.SpyInstance;
+    let consoleWarnSpy: jest.SpyInstance;
 
     beforeEach(() => {
         jest.useFakeTimers();
@@ -23,49 +25,106 @@ describe('StratumV1Service', () => {
             {} as any,
             {} as any,
             {} as any,
+            {} as any,
             {} as any
         );
         consoleLogSpy = jest.spyOn(console, 'log').mockImplementation(() => undefined);
+        consoleWarnSpy = jest.spyOn(console, 'warn').mockImplementation(() => undefined);
     });
 
     afterEach(() => {
         restoreEnv('MASTER', originalMaster);
-        restoreEnv('STRATUM_PORTS', originalStratumPorts);
-        restoreEnv('STRATUM_SECURE', originalStratumSecure);
-        restoreEnv('SECURE_STRATUM_PORTS', originalSecureStratumPorts);
+        restoreEnv('NODE_APP_INSTANCE', originalNodeAppInstance);
+        restoreEnv('STRATUM_PORT', originalStratumPort);
+        restoreEnv('STRATUM_BACKPRESSURE_ENABLED', originalBackpressureEnabled);
+        restoreEnv('STRATUM_MAX_CONNECTIONS_PER_LISTENER', originalMaxConnectionsPerListener);
         consoleLogSpy.mockRestore();
+        consoleWarnSpy.mockRestore();
         jest.useRealTimers();
     });
 
     it('should skip Stratum listeners in the master process', async () => {
         process.env.MASTER = 'true';
         const startSocketServerSpy = jest.spyOn(service as any, 'startSocketServer');
-        const startSecureSocketServerSpy = jest.spyOn(service as any, 'startSecureSocketServer');
 
         await service.onModuleInit();
         jest.runOnlyPendingTimers();
 
         expect(clientService.deleteAll).toHaveBeenCalled();
         expect(startSocketServerSpy).not.toHaveBeenCalled();
-        expect(startSecureSocketServerSpy).not.toHaveBeenCalled();
         expect(consoleLogSpy).toHaveBeenCalledWith('Master process skipping Stratum socket listeners');
     });
 
-    it('should start Stratum listeners in worker processes', async () => {
+    it('should start the Stratum listener in worker processes', async () => {
         process.env.MASTER = 'false';
-        process.env.STRATUM_PORTS = '3333,3334';
-        process.env.STRATUM_SECURE = 'true';
-        process.env.SECURE_STRATUM_PORTS = '4333';
+        process.env.STRATUM_PORT = '3334';
         const startSocketServerSpy = jest.spyOn(service as any, 'startSocketServer').mockImplementation(() => undefined);
-        const startSecureSocketServerSpy = jest.spyOn(service as any, 'startSecureSocketServer').mockImplementation(() => undefined);
 
         await service.onModuleInit();
         jest.advanceTimersByTime(10000);
 
         expect(clientService.deleteAll).not.toHaveBeenCalled();
-        expect(startSocketServerSpy).toHaveBeenCalledWith(3333);
         expect(startSocketServerSpy).toHaveBeenCalledWith(3334);
-        expect(startSecureSocketServerSpy).toHaveBeenCalledWith(4333);
+    });
+
+    it('should pause listeners when worker backpressure is high', () => {
+        const close = jest.fn((callback?: (error?: Error) => void) => callback?.());
+        (service as any).listeners.push({
+            port: 3333,
+            server: { close },
+            paused: false
+        });
+        jest.spyOn(service as any, 'getEventLoopP95Ms').mockReturnValue(5000);
+        jest.spyOn(service as any, 'getBackpressureEventLoopP95Ms').mockReturnValue(2000);
+
+        (service as any).checkBackpressure();
+
+        expect(close).toHaveBeenCalled();
+        expect((service as any).listeners[0].paused).toBe(true);
+        expect((service as any).listeners[0].server).toBeNull();
+        expect(consoleWarnSpy).toHaveBeenCalledWith(expect.stringContaining('Pausing Stratum accepts'));
+    });
+
+    it('should resume listeners after consecutive healthy backpressure checks', () => {
+        (service as any).listeners.push({
+            port: 3333,
+            server: null,
+            paused: true
+        });
+        jest.spyOn(service as any, 'getEventLoopP95Ms').mockReturnValue(50);
+        jest.spyOn(service as any, 'getBackpressureEventLoopP95Ms').mockReturnValue(2000);
+        jest.spyOn(service as any, 'getBackpressureResumeEventLoopP95Ms').mockReturnValue(250);
+        jest.spyOn(service as any, 'getBackpressureResumeRssMb').mockReturnValue(Number.MAX_SAFE_INTEGER);
+        jest.spyOn(service as any, 'getBackpressureHealthyChecks').mockReturnValue(2);
+        const listenSpy = jest.spyOn(service as any, 'listen').mockImplementation((listener: any) => {
+            listener.server = {};
+            listener.paused = false;
+        });
+
+        (service as any).checkBackpressure();
+        expect(listenSpy).not.toHaveBeenCalled();
+
+        (service as any).checkBackpressure();
+
+        expect(listenSpy).toHaveBeenCalledWith((service as any).listeners[0]);
+        expect((service as any).listeners[0].paused).toBe(false);
+        expect(consoleWarnSpy).toHaveBeenCalledWith(expect.stringContaining('Resuming Stratum accepts'));
+    });
+
+    it('should cap listener connections and drop excess cluster connections', () => {
+        process.env.STRATUM_MAX_CONNECTIONS_PER_LISTENER = '250';
+        const server = {} as any;
+
+        (service as any).configureConnectionLimit(server);
+
+        expect(server.maxConnections).toBe(250);
+        expect(server.dropMaxConnection).toBe(true);
+    });
+
+    it('should allow high-volume pools by default', () => {
+        delete process.env.STRATUM_MAX_CONNECTIONS_PER_LISTENER;
+
+        expect((service as any).getMaxConnectionsPerListener()).toBe(10000);
     });
 
     function restoreEnv(key: string, value: string | undefined) {

src/services/stratum-v1.service.ts

@@ -1,6 +1,7 @@
 import { Injectable, OnModuleInit } from '@nestjs/common';
 import { ConfigService } from '@nestjs/config';
 import { Server, Socket } from 'net';
+import { monitorEventLoopDelay } from 'perf_hooks';
 
 import { StratumV1Client } from '../models/StratumV1Client';
 import { AddressSettingsService } from '../ORM/address-settings/address-settings.service';
@@ -8,22 +9,32 @@ import { BlocksService } from '../ORM/blocks/blocks.service';
 import { ClientStatisticsService } from '../ORM/client-statistics/client-statistics.service';
 import { ClientService } from '../ORM/client/client.service';
 import { BitcoinRpcService } from './bitcoin-rpc.service';
+import { ExternalSharesService } from './external-shares.service';
 import { NotificationService } from './notification.service';
 import { StratumV1JobsService } from './stratum-v1-jobs.service';
 
-import { readFileSync } from 'fs';
-import { TlsOptions, TLSSocket, createServer } from 'tls';
-import * as path from 'path';
+interface StratumListenerState {
+    port: number;
+    server: Server | null;
+    paused: boolean;
+}
 
+const DEFAULT_BACKPRESSURE_CHECK_INTERVAL_MS = 5000;
+const DEFAULT_BACKPRESSURE_EVENT_LOOP_P95_MS = 2000;
+const DEFAULT_BACKPRESSURE_EVENT_LOOP_RESUME_P95_MS = 250;
+const DEFAULT_BACKPRESSURE_RSS_MB = 2500;
+const DEFAULT_BACKPRESSURE_RESUME_RSS_MB = 2000;
+const DEFAULT_BACKPRESSURE_HEALTHY_CHECKS = 3;
+const DEFAULT_MAX_CONNECTIONS_PER_LISTENER = 10000;
 
 
 @Injectable()
 export class StratumV1Service implements OnModuleInit {
 
-    private socketTimeout = 0;
-    private emptySocket = 0;
-    private normalClosure = 0;
-    private errorClosure = 0;
+    private readonly listeners: StratumListenerState[] = [];
+    private readonly eventLoopDelay = monitorEventLoopDelay({ resolution: 20 });
+    private backpressureMonitor: NodeJS.Timeout | null = null;
+    private healthyBackpressureChecks = 0;
 
     constructor(
         private readonly bitcoinRpcService: BitcoinRpcService,
@@ -33,45 +44,46 @@ export class StratumV1Service implements OnModuleInit {
         private readonly blocksService: BlocksService,
         private readonly configService: ConfigService,
         private readonly stratumV1JobsService: StratumV1JobsService,
-        private readonly addressSettingsService: AddressSettingsService
+        private readonly addressSettingsService: AddressSettingsService,
+        private readonly externalSharesService: ExternalSharesService
     ) {
 
     }
 
     async onModuleInit(): Promise<void> {
 
-        if (process.env.MASTER == 'true') {
+        if (process.env.NODE_APP_INSTANCE == '0' || process.env.MASTER == 'true') {
             await this.clientService.deleteAll();
+        }
+
+        if (process.env.MASTER == 'true') {
             console.log('Master process skipping Stratum socket listeners');
             return;
         }
 
-        // wait for all the other processes to init for an even connection distribution 
         setTimeout(() => {
-            process.env.STRATUM_PORTS.split(',').forEach(port => {
-                this.startSocketServer(parseInt(port));
-            });
-            if (process.env.STRATUM_SECURE?.toLowerCase() === 'true') {
-                process.env.SECURE_STRATUM_PORTS.split(',').forEach(port => {
-                    this.startSecureSocketServer(parseInt(port));
-                });
-            }
-        }, (10000));
+            this.startSocketServer(this.getStratumPort());
+        }, 1000 * 10);
 
-        setInterval(() => {
-            console.log(`Socket stats: ${this.emptySocket} empty, ${this.socketTimeout} timeouts, ${this.normalClosure} normal closure, ${this.errorClosure} error closure`);
-            this.emptySocket = 0;
-            this.socketTimeout = 0;
-            this.normalClosure = 0;
-            this.errorClosure = 0;
-        }, 1000 * 60);
+        this.startBackpressureMonitor();
 
     }
 
     private startSocketServer(port: number) {
+        const listener: StratumListenerState = {
+            port,
+            server: null,
+            paused: false
+        };
+        this.listeners.push(listener);
+        this.listen(listener);
+    }
+
+    private createSocketServer(): Server {
         const server = new Server(async (socket: Socket) => {
-            // Set 15-minute timeout
-            socket.setTimeout(1000 * 60 * 15);
+
+            //5 min
+            socket.setTimeout(1000 * 60 * 5);
 
             const client = new StratumV1Client(
                 socket,
@@ -82,132 +94,184 @@ export class StratumV1Service implements OnModuleInit {
                 this.notificationService,
                 this.blocksService,
                 this.configService,
-                this.addressSettingsService
+                this.addressSettingsService,
+                this.externalSharesService
             );
 
-            // Unified cleanup function
-            const cleanup = async (reason: string) => {
-                if (client.extraNonceAndSessionId != null) {
-                    await client.destroy();
-                    if (reason == 'Error') {
-                        this.errorClosure++;
-                    } else {
-                        this.normalClosure++;
-                    }
-                }
-                if (!socket.destroyed) {
-                    socket.end();
-                    socket.destroy();
-                }
-            };
-
-            // Handle client disconnection
-            socket.on('close', async (hadError: boolean) => {
-                await cleanup(hadError ? "Error" : "Normal Closure");
-            });
-
-            // Handle socket timeouts
-            socket.on('timeout', async () => {
-                if (socket.bytesRead == 0 || socket.bytesWritten == 0) {
-                    this.emptySocket++;
-                } else {
-                    this.socketTimeout++;
-                }
-                await cleanup("Timeout");
-            });
-
-            // Handle errors properly
-            socket.on('error', async (error: Error) => {
-                await cleanup("Error");
-            });
-
-            //
-
-
-        });
-
-        // Ensure server itself handles errors
-        server.on('error', (err) => {
-            console.error(`Server error: ${err.message}`);
-        });
-
-        server.listen(port, () => {
-            console.log(`Stratum server is listening on port ${port}`);
-        });
-
-    }
-
-    private startSecureSocketServer(port: number) {
-
-        const currentDirectory = process.cwd();
-        const keyPath = path.join(currentDirectory, 'secrets', 'key.pem');
-        const certPath = path.join(currentDirectory, 'secrets', 'cert.pem');
-
-        const tlsOptions: TlsOptions = {
-            key: readFileSync(keyPath),
-            cert: readFileSync(certPath),
-        };
-
-        const server = createServer(tlsOptions, async (socket: TLSSocket) => {
-            // Set 15-minute timeout
-            socket.setTimeout(1000 * 60 * 15);
-
-            const client = new StratumV1Client(
-                socket,
-                this.stratumV1JobsService,
-                this.bitcoinRpcService,
-                this.clientService,
-                this.clientStatisticsService,
-                this.notificationService,
-                this.blocksService,
-                this.configService,
-                this.addressSettingsService
-            );
-
-            const cleanup = async (reason: string) => {
-                if (client.extraNonceAndSessionId != null) {
-                    await client.destroy();
-                    if (reason === 'Error') {
-                        this.errorClosure++;
-                    } else {
-                        this.normalClosure++;
-                    }
-                }
-                if (!socket.destroyed) {
-                    socket.end();
-                    socket.destroy();
-                }
-            };
 
             socket.on('close', async (hadError: boolean) => {
-                await cleanup(hadError ? 'Error' : 'Normal Closure');
-            });
-
-            socket.on('timeout', async () => {
-                if (socket.bytesRead === 0 || socket.bytesWritten === 0) {
-                    this.emptySocket++;
-                } else {
-                    this.socketTimeout++;
+                if (client.extraNonceAndSessionId != null) {
+                    // Handle socket disconnection
+                    await client.destroy();
+                    console.log(`Client ${client.extraNonceAndSessionId} disconnected, hadError?:${hadError}`);
                 }
-                await cleanup('Timeout');
             });
 
-            socket.on('error', async (error: Error) => {
-                await cleanup('Error');
+            socket.on('timeout', () => {
+                console.log('socket timeout');
+                socket.end();
+                socket.destroy();
             });
 
-            // your protocol handling stays the same
+            socket.on('error', async (error: Error) => { });
+
+            //   //console.log(`Client disconnected, socket error,  ${client.extraNonceAndSessionId}`);
+
+
         });
 
         server.on('error', (err) => {
             console.error(`Server error: ${err.message}`);
         });
+        this.configureConnectionLimit(server);
 
-        server.listen(port, () => {
-            console.log(`Stratum TLS server is listening on port ${port}`);
-        });
-
+        return server;
     }
 
+    private listen(listener: StratumListenerState) {
+        if (listener.server != null) {
+            return;
+        }
+
+        const server = this.createSocketServer();
+        listener.server = server;
+        listener.paused = false;
+
+        server.listen(listener.port, () => {
+            console.log(`Stratum server is listening on port ${listener.port}`);
+        });
+    }
+
+    private startBackpressureMonitor() {
+        if (this.isBackpressureDisabled() || this.backpressureMonitor != null) {
+            return;
+        }
+
+        this.eventLoopDelay.enable();
+        this.backpressureMonitor = setInterval(() => {
+            this.checkBackpressure();
+        }, this.getBackpressureCheckIntervalMs());
+    }
+
+    private checkBackpressure() {
+        const eventLoopP95Ms = this.getEventLoopP95Ms();
+        const rssMb = Math.round(process.memoryUsage().rss / 1024 / 1024);
+        const overloaded = eventLoopP95Ms >= this.getBackpressureEventLoopP95Ms()
+            || rssMb >= this.getBackpressureRssMb();
+        const paused = this.listeners.some(listener => listener.paused);
+
+        if (overloaded) {
+            this.healthyBackpressureChecks = 0;
+            if (!paused) {
+                this.pauseAccepting(eventLoopP95Ms, rssMb);
+            }
+            this.eventLoopDelay.reset();
+            return;
+        }
+
+        if (!paused) {
+            this.eventLoopDelay.reset();
+            return;
+        }
+
+        const healthy = eventLoopP95Ms <= this.getBackpressureResumeEventLoopP95Ms()
+            && rssMb <= this.getBackpressureResumeRssMb();
+        if (!healthy) {
+            this.healthyBackpressureChecks = 0;
+            this.eventLoopDelay.reset();
+            return;
+        }
+
+        this.healthyBackpressureChecks++;
+        if (this.healthyBackpressureChecks >= this.getBackpressureHealthyChecks()) {
+            this.resumeAccepting(eventLoopP95Ms, rssMb);
+            this.healthyBackpressureChecks = 0;
+        }
+
+        this.eventLoopDelay.reset();
+    }
+
+    private pauseAccepting(eventLoopP95Ms: number, rssMb: number) {
+        console.warn(`Pausing Stratum accepts: eventLoopP95Ms=${eventLoopP95Ms}, rssMb=${rssMb}`);
+        for (const listener of this.listeners) {
+            if (listener.paused || listener.server == null) {
+                continue;
+            }
+
+            const server = listener.server;
+            listener.server = null;
+            listener.paused = true;
+            server.close((error) => {
+                if (error != null) {
+                    console.error(`Error while pausing Stratum listener on port ${listener.port}: ${error.message}`);
+                }
+            });
+        }
+    }
+
+    private resumeAccepting(eventLoopP95Ms: number, rssMb: number) {
+        console.warn(`Resuming Stratum accepts: eventLoopP95Ms=${eventLoopP95Ms}, rssMb=${rssMb}`);
+        for (const listener of this.listeners) {
+            if (!listener.paused || listener.server != null) {
+                continue;
+            }
+
+            this.listen(listener);
+        }
+    }
+
+    private configureConnectionLimit(server: Server) {
+        server.maxConnections = this.getMaxConnectionsPerListener();
+        (server as Server & { dropMaxConnection: boolean }).dropMaxConnection = true;
+    }
+
+    private getEventLoopP95Ms() {
+        return Math.round(this.eventLoopDelay.percentile(95) / 1e6);
+    }
+
+    private isBackpressureDisabled() {
+        return process.env.STRATUM_BACKPRESSURE_ENABLED?.toLowerCase() === 'false';
+    }
+
+    private getBackpressureCheckIntervalMs() {
+        return this.getPositiveIntegerEnv('STRATUM_BACKPRESSURE_CHECK_INTERVAL_MS', DEFAULT_BACKPRESSURE_CHECK_INTERVAL_MS);
+    }
+
+    private getBackpressureEventLoopP95Ms() {
+        return this.getPositiveIntegerEnv('STRATUM_BACKPRESSURE_EVENT_LOOP_P95_MS', DEFAULT_BACKPRESSURE_EVENT_LOOP_P95_MS);
+    }
+
+    private getBackpressureResumeEventLoopP95Ms() {
+        return this.getPositiveIntegerEnv('STRATUM_BACKPRESSURE_EVENT_LOOP_RESUME_P95_MS', DEFAULT_BACKPRESSURE_EVENT_LOOP_RESUME_P95_MS);
+    }
+
+    private getBackpressureRssMb() {
+        return this.getPositiveIntegerEnv('STRATUM_BACKPRESSURE_RSS_MB', DEFAULT_BACKPRESSURE_RSS_MB);
+    }
+
+    private getBackpressureResumeRssMb() {
+        return this.getPositiveIntegerEnv('STRATUM_BACKPRESSURE_RESUME_RSS_MB', DEFAULT_BACKPRESSURE_RESUME_RSS_MB);
+    }
+
+    private getBackpressureHealthyChecks() {
+        return this.getPositiveIntegerEnv('STRATUM_BACKPRESSURE_HEALTHY_CHECKS', DEFAULT_BACKPRESSURE_HEALTHY_CHECKS);
+    }
+
+    private getMaxConnectionsPerListener() {
+        return this.getPositiveIntegerEnv('STRATUM_MAX_CONNECTIONS_PER_LISTENER', DEFAULT_MAX_CONNECTIONS_PER_LISTENER);
+    }
+
+    private getStratumPort() {
+        return this.getPositiveIntegerEnv('STRATUM_PORT', 3333);
+    }
+
+    private getPositiveIntegerEnv(key: string, fallback: number) {
+        const configured = parseInt(process.env[key], 10);
+        if (Number.isFinite(configured) && configured > 0) {
+            return configured;
+        }
+        return fallback;
+
+    }
 
 }

src/utils/difficulty.utils.ts

@@ -0,0 +1,24 @@
+import * as bitcoinjs from 'bitcoinjs-lib';
+
+const TRUE_DIFF_ONE = 2.695953529101131e67;
+
+export class DifficultyUtils {
+  static calculateDifficulty(header: Buffer): { submissionDifficulty: number; submissionHash: string } {
+    const hashResult = bitcoinjs.crypto.hash256(Buffer.isBuffer(header) ? header : Buffer.from(header, 'hex'));
+    const target = DifficultyUtils.le256todouble(hashResult);
+    const difficulty = target === 0 ? Number.POSITIVE_INFINITY : TRUE_DIFF_ONE / target;
+    
+    return { 
+      submissionDifficulty: difficulty,
+      submissionHash: hashResult.toString('hex') 
+    };
+  }
+
+  private static le256todouble(target: Buffer): number {
+    let number = 0;
+    for (let i = target.length - 1; i >= 0; i--) {
+      number = number * 256 + target[i];
+    }
+    return number;
+  }
+}

test/models/MockRecording1.ts

@@ -2,10 +2,10 @@ import { IBlockTemplate } from '../../src/models/bitcoin-rpc/IBlockTemplate';
 
 export class MockRecording1 {
     public static EXTRA_NONCE = `57a6f098`;
-    public static MINING_SUBSCRIBE = `{"id": 1, "method": "mining.subscribe", "params": ["bitaxe v2.2"]}`;
-    public static MINING_CONFIGURE = `{"id": 2, "method": "mining.configure", "params": [["version-rolling"], {"version-rolling.mask": "ffffffff"}]}`;
-    public static MINING_AUTHORIZE = `{"id": 3, "method": "mining.authorize", "params": ["tb1qumezefzdeqqwn5zfvgdrhxjzc5ylr39uhuxcz4.bitaxe3", "x"]}`;
-    public static MINING_SUGGEST_DIFFICULTY = `{"id": 4, "method": "mining.suggest_difficulty", "params": [512]}`;
+    public static MINING_SUBSCRIBE = `{"id": 1, "method": "mining.subscribe", "params": ["bitaxe v2.2"]}\n`;
+    public static MINING_CONFIGURE = `{"id": 2, "method": "mining.configure", "params": [["version-rolling"], {"version-rolling.mask": "ffffffff"}]}\n`;
+    public static MINING_AUTHORIZE = `{"id": 3, "method": "mining.authorize", "params": ["tb1qumezefzdeqqwn5zfvgdrhxjzc5ylr39uhuxcz4.bitaxe3", "x"]}\n`;
+    public static MINING_SUGGEST_DIFFICULTY = `{"id": 4, "method": "mining.suggest_difficulty", "params": [512]}\n`;
     public static BLOCK_TEMPLATE: IBlockTemplate = { "capabilities": ["proposal"], "version": 536870912, "rules": ["csv", "!segwit", "taproot"], "vbavailable": {}, "vbrequired": 0, "previousblockhash": "00000000000000022246451e9af7ac4f8bff2527d223f6e623740e92171592f2", "transactions": [{ "data": "02000000000101c3efa41c94ee24dd6c6aaccab0f27e9d2baf92e5112bff15cc463b600e4e3a3c0100000000fdffffff024ea319000000000017a914a5b8d32a6388f02204a1445bd623150ee3b851d18765d67b000000000017a914a316e3a4eaeee9cbee9c254c3292830281a8c9c38702473044022065fbcd2918e8b52c3af8c4ae21b3646d7a12f66ddcaa73a68273f5806527c0da0220291f555dd120bb9eadb144ccf4203db659b78d79bffcd37a29016da068f3abb9012102baab4d464b57771f5108f40ffc31b7242c5b430a61d4bfead024d715c441f3f3c7432500", "txid": "a174b99a87c899e66854ba6f101799ac852ef588ec69299846875e9d64355317", "hash": "748f4db5e45dab6a9903f50e7e760470ce80ac219c637d61418667a0ccb6c536", "depends": [], "fee": 14300, "sigops": 1, "weight": 569 }, { "data": "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", "txid": "c34ac3f822a0b49f298be1a25fc9e9dd375c23985ed2656f7cf7d87b67fee1c0", "hash": "c34ac3f822a0b49f298be1a25fc9e9dd375c23985ed2656f7cf7d87b67fee1c0", "depends": [], "fee": 9153, "sigops": 12, "weight": 1408 }, { "data": "020000000001013f8e5ebf5620f2c62c9c4e4f77bb4eb903699620da372ad44f666a552e5b9fc801000000171600148442ee1fe3742153a6b40623d363a22ceed677c3ffffffff02bc0200000000000017a91470b93cf7ead31ef24b71159388c2e8e147f755b987aa0415000000000017a9145506e665bcf63e1225100d7c8613a640699fd5d087024730440220215cd74141ebcde3aee383f232dfd2c6b011645012f35714781d28d4a6959829022017ea40a15f4116bbf0a6f86dc0af08758d9a74673498a61164ed13e9d1c712e501210294184e8093958861740c4ce32e724a24b7df7eeb04702cae274652e86b01f83a00000000", "txid": "5aaf2fa707da25c24374b87d89c420c9e4c51022a4bbed4cc91614831f359366", "hash": "2c19268e65cc223c5fac9666883ecc1d10e680c54a4fdbbb3e4775f886b0feec", "depends": [], "fee": 491, "sigops": 1, "weight": 661 }, { "data": "020000000001012c53f5b0a12cadb57602466e703e60272183b75f3366073f4841dac8e616f2740000000000feffffff02e80300000000000016001496e381bd3fe4bae631adc5a5a420fb9124e5480af0a8100000000000160014cd06fc96fea44c6c5e074ba16dd20b222a0a9b32024730440220440ba2252ea6f70f1b8106897984330a997ef504f7f0dbb89679e44309026f2b02207074ad7dbd9a2bd37a41352527b7f3e68612956fe2085a0eb0b41f97f6a3599d012103b3ecf0f44126019a94a818245e35ecff1582c2900a38487a306fcd91bdb28003c8432500", "txid": "69770cf296b64329e784a5666fb0eab034fbb1780bf067f4e1606874c214f01d", "hash": "fadcaa8de64274e63c093592ed6d8c6b7584bb92c0e8d9c49f02a4df11f6f69d", "depends": [], "fee": 141, "sigops": 1, "weight": 561 }, { "data": "01000000019e03cd78895f6876932501b66eab1e44611d48b4c5029d250b7d2d6073b44b68000000006b48304502210088dfbeb842d54893987e5afb87b70fe70e7b91ebad740782515c44464b19a74202205a6bc47ad6c925f85aa29b2be1a174efcc30a4ad8ed6cfe6236b66d7a4f8d96f01210259530ee281106e237ac3aa801d1f7699ada05501186401da78b7d88849bbda8bffffffff0204ce3900000000001976a91419803f0d83a1b58348a4617c743638bbf9ec235588ac44ce5c01000000001976a9149e38aebe02be7cecacdb521f514cffe445c5533788ac00000000", "txid": "2137ca428d6233e680cea25c428b984391314d872a1a0f5f7b8dc8cfc4474c44", "hash": "2137ca428d6233e680cea25c428b984391314d872a1a0f5f7b8dc8cfc4474c44", "depends": [], "fee": 226, "sigops": 8, "weight": 904 }], "coinbaseaux": {}, "coinbasevalue": 2465717, "longpollid": "00000000000000022246451e9af7ac4f8bff2527d223f6e623740e92171592f29370", "target": "000000000000002495f800000000000000000000000000000000000000000000", "mintime": 1689512405, "mutable": ["time", "transactions", "prevblock"], "noncerange": "00000000ffffffff", "sigoplimit": 80000, "sizelimit": 4000000, "weightlimit": 4000000, "curtime": 1689514989, "bits": "192495f8", "height": 2442185, "default_witness_commitment": "6a24aa21a9edbd3d1d916aa0b57326a2d88ebe1b68a1d7c48585f26d8335fe6a94b62755f64c" };
     public static MINING_SUBMIT = `{"id": 5, "method": "mining.submit", "params": ["tb1qumezefzdeqqwn5zfvgdrhxjzc5ylr39uhuxcz4.bitaxe3", "1", "c708000000000000", "64b3f3ec", "ed460d91", "00002000"]}`;
     public static TIME = '64b3f3ec';