block template

.vscode/settings.json

@@ -6,6 +6,7 @@
         "merkle",
         "nbits",
         "ntime",
-        "prevhash"
+        "prevhash",
+        "Tempalte"
     ]
 }

src/app.module.ts

@@ -5,18 +5,20 @@ import { AppController } from './app.controller';
 import { AppService } from './app.service';
 import { BitcoinRpcService } from './bitcoin-rpc.service';
 import { BitcoinStratumProvider } from './bitcoin-stratum.provider';
+import { CoinbaseConstructorService } from './coinbase-constructor.service';
 
 
 
 @Module({
     imports: [
-        ConfigModule
+        ConfigModule.forRoot()
     ],
     controllers: [AppController],
     providers: [
         AppService,
         BitcoinStratumProvider,
-        BitcoinRpcService
+        BitcoinRpcService,
+        CoinbaseConstructorService
     ],
 })
 export class AppModule {

src/bitcoin-rpc.service.ts

@@ -1,10 +1,12 @@
-import { Injectable } from '@nestjs/common';
+import { Injectable, OnModuleInit } from '@nestjs/common';
 import { ConfigService } from '@nestjs/config';
 import { RPCClient } from 'rpc-bitcoin';
 
+import { IBlockTempalte } from './models/IBlockTempalte';
+
 
 @Injectable()
-export class BitcoinRpcService {
+export class BitcoinRpcService implements OnModuleInit {
 
     private client: RPCClient;
 
@@ -14,20 +16,31 @@ export class BitcoinRpcService {
         const pass = configService.get('BITCOIN_RPC_PASSWORD');
         const port = parseInt(configService.get('BITCOIN_RPC_PORT'));
         const timeout = parseInt(configService.get('BITCOIN_RPC_TIMEOUT'));
+
         this.client = new RPCClient({ url, port, timeout, user, pass });
         console.log('Bitcoin RPC connected');
     }
 
+    async onModuleInit(): Promise<void> {
+        console.log('onModuleInit');
+        // Asynchronous initialization logic
+        //await this.getBlockTemplate();
+
+        return;
+    }
+
 
     public async getBlockTemplate() {
 
-        const result = await this.client.getblocktemplate({
+        const result: IBlockTempalte = await this.client.getblocktemplate({
             template_request: {
                 rules: ['segwit'],
                 mode: 'template',
                 capabilities: ['serverlist', 'proposal']
             }
         });
+
+        console.log('Block Template: ', JSON.stringify(result));
     }
 }
 

src/bitcoin-stratum.provider.ts

@@ -1,6 +1,7 @@
 import { Injectable } from '@nestjs/common';
 import { Server, Socket } from 'net';
 
+import { CoinbaseConstructorService } from './coinbase-constructor.service';
 import { StratumV1Client } from './models/StratumV1Client';
 
 @Injectable()
@@ -10,7 +11,8 @@ export class BitcoinStratumProvider {
 
   private server: Server;
 
-  constructor() {
+  constructor(private coinbaseConstructorService: CoinbaseConstructorService) {
+
     this.server = new Server((socket: Socket) => {
       console.log('New client connected:', socket.remoteAddress);
 

src/coinbase-constructor.service.ts

@@ -0,0 +1,14 @@
+import { Injectable } from '@nestjs/common';
+
+import { BitcoinRpcService } from './bitcoin-rpc.service';
+
+
+@Injectable()
+export class CoinbaseConstructorService {
+
+    constructor(private bitcoinRPCService: BitcoinRpcService) {
+
+    }
+
+
+}

src/models/IBlockTempalte.ts

@@ -0,0 +1,41 @@
+export interface IBlockTempalte {
+    // (json object)
+    version: number;                           // (numeric) The preferred block version
+    rules: string[];                              // (json array) specific block rules that are to be enforced  // (string) name of a rule the client must understand to some extent; see BIP 9 for format
+
+    vbavailable: {                        // (json object) set of pending, supported versionbit (BIP 9) softfork deployments
+        rulename: number,                        // (numeric) identifies the bit number as indicating acceptance and readiness for the named softfork rule
+    },
+    vbrequired: number,                        // (numeric) bit mask of versionbits the server requires set in submissions
+    previousblockhash: string,             // (string) The hash of current highest block
+    transactions: [                       // (json array) contents of non-coinbase transactions that should be included in the next block
+        {                                      // (json object)
+            data: string; //'hex',                      // (string) transaction data encoded in hexadecimal (byte-for-byte)
+            txid: string; //'hex',                      // (string) transaction id encoded in little-endian hexadecimal
+            hash: string; //'hex',                      // (string) hash encoded in little-endian hexadecimal (including witness data)
+            depends: number[];                        // (json array) array of numbers // (numeric) transactions before this one (by 1-based index in 'transactions' list) that must be present in the final block if this one is
+            fee: number,                           // (numeric) difference in value between transaction inputs and outputs (in satoshis); for coinbase transactions, this is a negative Number of the total collected block fees (ie, not including the block subsidy); if key is not present, fee is unknown and clients MUST NOT assume there isn't one
+            sigops: number,                        // (numeric) total SigOps cost, as counted for purposes of block limits; if key is not present, sigop cost is unknown and clients MUST NOT assume it is zero
+            weight: number                         // (numeric) total transaction weight, as counted for purposes of block limits
+        }
+    ],
+    coinbaseaux: {                        // (json object) data that should be included in the coinbase's scriptSig content
+        key: string; //'hex',                         // (string) values must be in the coinbase (keys may be ignored)
+    },
+    coinbasevalue: number,                     // (numeric) maximum allowable input to coinbase transaction, including the generation award and transaction fees (in satoshis)
+    longpollid: string,                    // (string) an id to include with a request to longpoll on an update to this template
+    target: string,                        // (string) The hash target
+    mintime: number,                         // (numeric) The minimum timestamp appropriate for the next block time, expressed in UNIX epoch time
+    mutable: string[];                            // (json array) list of ways the block template may be changed   // (string) A way the block template may be changed, e.g. 'time', 'transactions', 'prevblock'
+
+    noncerange: string; // 'hex',                    // (string) A range of valid nonces
+    sigoplimit: number,                        // (numeric) limit of sigops in blocks
+    sizelimit: number,                         // (numeric) limit of block size
+    weightlimit: number,                       // (numeric) limit of block weight
+    curtime: number,                         // (numeric) current timestamp in UNIX epoch time
+    bits: string,                          // (string) compressed target of next block
+    height: number,                            // (numeric) The height of the next block
+    default_witness_commitment: string     // (string, optional) a valid witness commitment for the unmodified block template
+
+
+}

src/models/MiningJob.ts

@@ -9,12 +9,12 @@ export class MiningJob {
 
 
     public job_id: string; // ID of the job. Use this ID while submitting share generated from this job.
-    public prevhash: string; // Hash of previous block.
-    public coinb1: string; // Initial part of coinbase transaction.
-    public coinb2: string; // Final part of coinbase transaction.
+    public prevhash: string; // The hex-encoded previous block hash.
+    public coinb1: string; // The hex-encoded prefix of the coinbase transaction (to precede extra nonce 2).
+    public coinb2: string; //The hex-encoded suffix of the coinbase transaction (to follow extra nonce 2).
     public merkle_branch: string[]; // List of hashes, will be used for calculation of merkle root. This is not a list of all transactions, it only contains prepared hashes of steps of merkle tree algorithm.
-    public version: string; // Bitcoin block version.
-    public nbits: string; // Encoded current network difficulty
+    public version: string; // The hex-encoded block version.
+    public nbits: string; // The hex-encoded network difficulty required for the block.
     public ntime: string; // Current ntime/
     public clean_jobs: boolean; // When true, server indicates that submitting shares from previous jobs don't have a sense and such shares will be rejected. When this flag is set, miner should also drop all previous jobs too.