779 lines
29 KiB
JavaScript
779 lines
29 KiB
JavaScript
var events = require('events');
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var async = require('async');
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var varDiff = require('./varDiff.js');
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var daemon = require('./daemon.js');
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var peer = require('./peer.js');
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var stratum = require('./stratum.js');
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var jobManager = require('./jobManager.js');
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var util = require('./util.js');
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var bignum = require('bignum');
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/**
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* Main pool object. It emits the following events:
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* - started() - when the pool is effectively started
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* - share(isValidShare, isValidBlock, shareData) - When a share is submitted
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* - log(severity, key, text) - for debug, warning, and error messages
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*
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* It initializes and connects:
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* - JobManager - for generating miner work, processing block templates and shares
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* - DaemonInterface - for RPC communication with daemon
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* - StratumServer - for TCP socket communication with miners
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*
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*/
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var pool = module.exports = function pool(options, authorizeFn){
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this.options = options;
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var _this = this;
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var blockPollingIntervalId;
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var emitLog = function(text) { _this.emit('log', 'debug' , text); };
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var emitWarningLog = function(text) { _this.emit('log', 'warning', text); };
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var emitErrorLog = function(text) { _this.emit('log', 'error' , text); };
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var emitSpecialLog = function(text) { _this.emit('log', 'special', text); };
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if (!(options.coin.algorithm in algos)){
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emitErrorLog('The ' + options.coin.algorithm + ' hashing algorithm is not supported.');
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throw new Error();
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}
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var diff1 = options.coin.diffShift ?
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util.getTruncatedDiff(options.coin.diffShift) :
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algos[options.coin.algorithm].diff;
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//Which number to use as dividend when converting difficulty to target
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var maxDifficulty = bignum.fromBuffer(diff1);
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this.start = function(){
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SetupJobManager();
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SetupVarDiff();
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SetupApi();
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SetupDaemonInterface(function(){
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DetectCoinData(function(){
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OnBlockchainSynced(function(){
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GetFirstJob(function(){
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SetupBlockPolling();
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SetupPeer();
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StartStratumServer(function(){
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OutputPoolInfo();
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_this.emit('started');
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});
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});
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});
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});
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});
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};
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function GetFirstJob(finishedCallback){
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GetBlockTemplate(function(error, result){
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if (error) {
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emitErrorLog('Error with getblocktemplate on creating first job, server cannot start');
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return;
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}
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var portWarnings = [];
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Object.keys(options.ports).forEach(function(port){
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var portDiff = options.ports[port].diff;
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if (_this.jobManager.currentJob.difficulty.le(portDiff))
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portWarnings.push('port ' + port + ' w/ difficulty ' + portDiff);
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});
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//Only let the first fork show synced status or the log wil look flooded with it
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if (portWarnings.length > 0 && (!process.env.forkId || process.env.forkId === '0')) {
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var warnMessage = 'Network difficulty of ' + _this.jobManager.currentJob.difficulty.toString() + ' is lower than '
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+ portWarnings.join(' and ');
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emitWarningLog(warnMessage);
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}
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finishedCallback();
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});
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}
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function OutputPoolInfo(){
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var startMessage = 'Stratum Pool Server Started for ' + options.coin.name +
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' [' + options.coin.symbol.toUpperCase() + '] {' + options.coin.algorithm + '}';
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if (process.env.forkId && process.env.forkId !== '0'){
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emitLog(startMessage);
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return;
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}
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var infoLines = [startMessage,
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'Network Connected:\t' + (options.testnet ? 'Testnet' : 'Live Blockchain'),
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'Detected Reward Type:\t' + options.coin.reward,
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'Current Block Height:\t' + _this.jobManager.currentJob.rpcData.height,
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'Current Connect Peers:\t' + options.initStats.connections,
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'Network Hash Rate:\t' + util.getReadableHashRateString(options.initStats.networkHashRate),
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'Network Difficulty:\t' + _this.jobManager.currentJob.difficulty.toString(),
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'Listening Port(s):\t' + _this.options.initStats.stratumPorts.join(', ')
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];
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if (typeof options.blockRefreshInterval === "number" && options.blockRefreshInterval > 0)
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infoLines.push('Block polling every:\t' + options.blockRefreshInterval + ' ms')
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emitSpecialLog(infoLines.join('\n\t\t\t\t\t\t'));
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}
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function OnBlockchainSynced(syncedCallback){
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var checkSynced = function(displayNotSynced){
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_this.daemon.cmd('getblocktemplate', [], function(results){
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var synced = results.every(function(r){
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return !r.error || r.error.code !== -10;
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});
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if (synced){
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syncedCallback();
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}
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else{
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if (displayNotSynced) displayNotSynced();
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setTimeout(checkSynced, 5000);
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//Only let the first fork show synced status or the log wil look flooded with it
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if (!process.env.forkId || process.env.forkId === '0')
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generateProgress();
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}
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});
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};
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checkSynced(function(){
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//Only let the first fork show synced status or the log wil look flooded with it
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if (!process.env.forkId || process.env.forkId === '0')
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emitErrorLog('Daemon is still syncing with network (download blockchain) - server will be started once synced');
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});
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var generateProgress = function(){
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_this.daemon.cmd('getinfo', [], function(results) {
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var blockCount = results.sort(function (a, b) {
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return b.response.blocks - a.response.blocks;
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})[0].response.blocks;
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//get list of peers and their highest block height to compare to ours
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_this.daemon.cmd('getpeerinfo', [], function(results){
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var peers = results[0].response;
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var totalBlocks = peers.sort(function(a, b){
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return b.startingheight - a.startingheight;
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})[0].startingheight;
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var percent = (blockCount / totalBlocks * 100).toFixed(2);
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emitWarningLog('Downloaded ' + percent + '% of blockchain from ' + peers.length + ' peers');
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});
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});
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};
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}
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function SetupApi() {
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if (typeof(options.api) !== 'object' || typeof(options.api.start) !== 'function') {
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return;
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} else {
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options.api.start(_this);
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}
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}
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function SetupPeer(){
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if (!options.p2p || !options.p2p.enabled)
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return;
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_this.peer = new peer(options);
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_this.peer.on('connected', function() {
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emitLog('p2p connection successful');
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}).on('connectionRejected', function(){
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emitErrorLog('p2p connection failed - likely incorrect p2p magic value');
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}).on('disconnected', function(){
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emitWarningLog('p2p peer node disconnected - attempting reconnection...');
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}).on('connectionFailed', function(e){
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emitErrorLog('p2p connection failed - likely incorrect host or port');
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}).on('socketError', function(e){
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emitErrorLog('p2p had a socket error ' + JSON.stringify(e));
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}).on('error', function(msg){
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emitWarningLog('p2p had an error ' + msg);
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}).on('blockFound', function(hash){
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_this.processBlockNotify(hash, 'p2p');
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});
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}
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function SetupVarDiff(){
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_this.varDiff = {};
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Object.keys(options.ports).forEach(function(port) {
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if (options.ports[port].varDiff)
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_this.setVarDiff(port, new varDiff(port, options.ports[port].varDiff));
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});
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}
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/*
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Coin daemons either use submitblock or getblocktemplate for submitting new blocks
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*/
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function SubmitBlock(blockHex, callback){
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var rpcCommand, rpcArgs;
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if (options.hasSubmitMethod){
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rpcCommand = 'submitblock';
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rpcArgs = [blockHex];
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}
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else{
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rpcCommand = 'getblocktemplate';
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rpcArgs = [{'mode': 'submit', 'data': blockHex}];
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}
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_this.daemon.cmd(rpcCommand,
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rpcArgs,
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function(results){
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results.forEach(function(result){
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if (result.error)
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emitErrorLog('rpc error with daemon instance ' +
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result.instance.index + ' when submitting block with ' + rpcCommand + ' ' +
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JSON.stringify(result.error)
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);
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else
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emitLog('Submitted Block using ' + rpcCommand + ' to daemon instance ' +
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result.instance.index
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);
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});
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callback();
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}
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);
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}
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function SetupJobManager(){
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_this.jobManager = new jobManager(maxDifficulty, options);
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_this.jobManager.on('newBlock', function(blockTemplate){
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//Check if stratumServer has been initialized yet
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if ( typeof(_this.stratumServer ) !== 'undefined') {
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//emitLog('Detected new block');
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_this.stratumServer.broadcastMiningJobs(blockTemplate.getJobParams());
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}
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}).on('updatedBlock', function(blockTemplate){
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//Check if stratumServer has been initialized yet
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if ( typeof(_this.stratumServer ) !== 'undefined') {
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//emitLog('Detected updated block transactions');
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var job = blockTemplate.getJobParams();
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job[8] = false;
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_this.stratumServer.broadcastMiningJobs(job);
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}
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}).on('share', function(shareData, blockHex){
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var isValidShare = !shareData.error;
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var isValidBlock = !!blockHex;
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var emitShare = function(){
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_this.emit('share', isValidShare, isValidBlock, shareData);
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};
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/*
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If we calculated that the block solution was found,
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before we emit the share, lets submit the block,
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then check if it was accepted using RPC getblock
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*/
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if (!isValidBlock)
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emitShare();
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else{
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SubmitBlock(blockHex, function(){
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CheckBlockAccepted(shareData.blockHash, function(isAccepted, tx){
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isValidBlock = isAccepted;
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shareData.txHash = tx;
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emitShare();
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});
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});
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}
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}).on('log', function(severity, message){
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_this.emit('log', severity, message);
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}).on('debugBlockShare', function(debugData) {
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//emitLog(JSON.stringify(debugData));
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});
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}
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function SetupDaemonInterface(finishedCallback){
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if (!Array.isArray(options.daemons) || options.daemons.length < 1){
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emitErrorLog('No daemons have been configured - pool cannot start');
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return;
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}
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_this.daemon = new daemon.interface(options.daemons);
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_this.daemon.once('online', function(){
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finishedCallback();
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}).on('connectionFailed', function(error){
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emitErrorLog('Failed to connect daemon(s): ' + JSON.stringify(error));
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}).on('error', function(message){
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emitErrorLog(message);
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});
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_this.daemon.init();
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}
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function DetectCoinData(finishedCallback){
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//TODO: Convert this all into a batch RPC call for better performance
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async.waterfall([
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function(callback){
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_this.daemon.cmd('validateaddress', [options.address], function(results){
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//Make sure address is valid with each daemon
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var allValid = results.every(function(result){
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if (result.error || !result.response){
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emitErrorLog('validateaddress rpc error on daemon instance ' +
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result.instance.index + ' - ' + JSON.stringify(result.error));
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}
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else if (!result.response.isvalid)
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emitErrorLog('Daemon instance ' + result.instance.index +
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' reports address is not valid');
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return result.response && result.response.isvalid;
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});
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if (!allValid){
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callback('not all addresses are valid');
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return;
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}
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//Try to find result that owns address in case of POS coin with multi daemons
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var ownedInfo = results.filter(function(r){
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return r.response.ismine;
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});
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options.coin.addressByte = util.getVersionByte(options.address);
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callback(null, ownedInfo.length > 0 ? ownedInfo[0].response : results[0].response);
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});
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},
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function(addressInfo, callback){
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var examplePubKey = new Buffer([options.coin.addressByte, new Buffer('010966776006953D5567439E5E39F86A0D273BEE', 'hex')]);
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var dHashed = util.sha256d(examplePubKey);
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var binaryAddress =
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callback(null, addressInfo);
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},
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function(addressInfo, callback){
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_this.daemon.cmd('getdifficulty', [], function(results){
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//This detects if a coin is POS because getdiff returns an object instead of a number
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var isPos = results.every(function(result){
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if (result.error){
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emitErrorLog('getinfo on init failed with daemon instance ' +
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result.instance.index + ', error ' + JSON.stringify(result.error)
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);
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return false;
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}
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return isNaN(result.response) && 'proof-of-stake' in result.response;
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});
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options.coin.reward = isPos ? 'POS' : 'POW';
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/* POS coins must use the pubkey in coinbase transaction, and pubkey is
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only given if address is owned by wallet.*/
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if (options.coin.reward === 'POS' && typeof(addressInfo.pubkey) == 'undefined') {
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emitErrorLog('The address provided is not from the daemon wallet - this is required for POS coins.');
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return;
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}
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options.publicKeyBuffer = (function(){
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switch(options.coin.reward){
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case 'POS':
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return util.pubkeyToScript(addressInfo.pubkey);
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case 'POW':
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return util.addressToScript(addressInfo.address);
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}
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})();
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callback(null);
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});
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},
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function(callback){
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_this.daemon.cmd('getinfo', [], function(results){
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// Print which network each daemon is running on
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var isTestnet;
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var allValid = results.every(function(result){
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if (result.error){
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emitErrorLog('getinfo on init failed with daemon instance ' +
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result.instance.index + ', error ' + JSON.stringify(result.error)
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);
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return false;
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}
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//Make sure every daemon is on the correct network or the config is wrong
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if (typeof isTestnet === 'undefined'){
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isTestnet = result.response.testnet;
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return true;
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}
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else if (isTestnet !== result.response.testnet){
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emitErrorLog('not all daemons are on same network');
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return false;
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}
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else
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return true;
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});
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if (!allValid){
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callback('could not getinfo correctly on each daemon');
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return;
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}
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//Find and return the response with the largest block height (most in-sync)
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var infoResult = results.sort(function(a, b){
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return b.response.blocks - a.response.blocks;
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})[0].response;
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options.testnet = infoResult.testnet;
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options.protocolVersion = infoResult.protocolversion;
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options.initStats = { connections: infoResult.connections, difficulty: infoResult.difficulty };
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callback(null);
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});
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},
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function(callback){
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_this.daemon.cmd('getmininginfo', [], function(results){
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var allValid = results.every(function(result){
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if (result.error){
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emitErrorLog('getmininginfo on init failed with daemon instance ' +
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result.instance.index + ', error ' + JSON.stringify(result.error)
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);
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return false;
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}
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return true;
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});
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if (!allValid){
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callback('could not getmininginfo correctly on each daemon');
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return;
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}
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//Find and return the response with the largest block height (most in-sync)
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var miningInfoResult = results.sort(function(a, b){
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return b.response.blocks - a.response.blocks;
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})[0].response;
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options.initStats.networkHashRate = miningInfoResult.networkhashps;
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callback(null);
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});
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},
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function(callback){
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/* This checks to see whether the daemon uses submitblock
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or getblocktemplate for submitting new blocks */
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_this.daemon.cmd('submitblock', [], function(results){
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var couldNotDetectMethod = results.every(function(result){
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if (result.error && result.error.message === 'Method not found'){
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options.hasSubmitMethod = false;
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callback(null);
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return false;
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}
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else if (result.error && result.error.code === -1){
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options.hasSubmitMethod = true;
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callback(null);
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return false;
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}
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else
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return true;
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});
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if (couldNotDetectMethod){
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emitErrorLog('Could not detect block submission RPC method, ' + JSON.stringify(results));
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callback('block submission detection failed');
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}
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});
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}
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], function(err, results){
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if (err){
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emitErrorLog('Could not start pool, ' + JSON.stringify(err));
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return;
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}
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finishedCallback();
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});
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}
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function StartStratumServer(finishedCallback){
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_this.stratumServer = new stratum.Server(options, authorizeFn);
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_this.stratumServer.on('started', function(){
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options.initStats.stratumPorts = Object.keys(options.ports);
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finishedCallback();
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_this.emit('started');
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}).on('client.connected', function(client){
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if (typeof(_this.varDiff[client.socket.localPort]) !== 'undefined') {
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_this.varDiff[client.socket.localPort].manageClient(client);
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}
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client.on('difficultyChanged', function(diff){
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_this.emit('difficultyUpdate', client.workerName, diff);
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}).on('subscription', function(params, resultCallback){
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var extraNonce = _this.jobManager.extraNonceCounter.next();
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var extraNonce2Size = _this.jobManager.extraNonce2Size;
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resultCallback(null,
|
|
extraNonce,
|
|
extraNonce2Size
|
|
);
|
|
|
|
if (typeof(options.ports[client.socket.localPort]) !== 'undefined' && options.ports[client.socket.localPort].diff) {
|
|
this.sendDifficulty(options.ports[client.socket.localPort].diff);
|
|
} else {
|
|
this.sendDifficulty(8);
|
|
}
|
|
|
|
this.sendMiningJob(_this.jobManager.currentJob.getJobParams());
|
|
|
|
}).on('submit', function(params, resultCallback){
|
|
var result =_this.jobManager.processShare(
|
|
params.jobId,
|
|
client.previousDifficulty,
|
|
client.difficulty,
|
|
client.extraNonce1,
|
|
params.extraNonce2,
|
|
params.nTime,
|
|
params.nonce,
|
|
client.remoteAddress,
|
|
params.name
|
|
);
|
|
|
|
resultCallback(result.error, result.result ? true : null);
|
|
|
|
}).on('malformedMessage', function (message) {
|
|
emitWarningLog('Malformed message from ' + client.getLabel() + ': ' + message);
|
|
|
|
}).on('socketError', function(err) {
|
|
emitWarningLog('Socket error from ' + client.getLabel() + ': ' + JSON.stringify(err));
|
|
|
|
}).on('socketTimeout', function(reason){
|
|
emitWarningLog('Connected timed out for ' + client.getLabel() + ': ' + reason)
|
|
|
|
}).on('socketDisconnect', function() {
|
|
//emitLog('Socket disconnected from ' + client.getLabel());
|
|
|
|
}).on('kickedBannedIP', function(remainingBanTime){
|
|
emitLog('Rejected incoming connection from ' + client.remoteAddress + ' banned for ' + remainingBanTime + ' more seconds');
|
|
|
|
}).on('forgaveBannedIP', function(){
|
|
emitLog('Forgave banned IP ' + client.remoteAddress);
|
|
|
|
}).on('unknownStratumMethod', function(fullMessage) {
|
|
emitLog('Unknown stratum method from ' + client.getLabel() + ': ' + fullMessage.method);
|
|
|
|
}).on('socketFlooded', function() {
|
|
emitWarningLog('Detected socket flooding from ' + client.getLabel());
|
|
|
|
}).on('tcpProxyError', function(data) {
|
|
emitErrorLog('Client IP detection failed, tcpProxyProtocol is enabled yet did not receive proxy protocol message, instead got data: ' + data);
|
|
|
|
}).on('bootedBannedWorker', function(){
|
|
emitWarningLog('Booted worker ' + client.getLabel() + ' who was connected from an IP address that was just banned');
|
|
|
|
}).on('triggerBan', function(reason){
|
|
emitWarningLog('Banned triggered for ' + client.getLabel() + ': ' + reason);
|
|
_this.emit('banIP', client.remoteAddress, client.workerName);
|
|
});
|
|
});
|
|
}
|
|
|
|
|
|
|
|
function SetupBlockPolling(){
|
|
if (typeof options.blockRefreshInterval !== "number" || options.blockRefreshInterval <= 0){
|
|
emitLog('Block template polling has been disabled');
|
|
return;
|
|
}
|
|
|
|
var pollingInterval = options.blockRefreshInterval;
|
|
|
|
blockPollingIntervalId = setInterval(function () {
|
|
GetBlockTemplate(function(error, result, foundNewBlock){
|
|
if (foundNewBlock)
|
|
emitLog('Block notification via RPC polling');
|
|
});
|
|
}, pollingInterval);
|
|
}
|
|
|
|
|
|
|
|
function GetBlockTemplate(callback){
|
|
_this.daemon.cmd('getblocktemplate',
|
|
[{"capabilities": [ "coinbasetxn", "workid", "coinbase/append" ]}],
|
|
function(result){
|
|
if (result.error){
|
|
emitErrorLog('getblocktemplate call failed for daemon instance ' +
|
|
result.instance.index + ' with error ' + JSON.stringify(result.error));
|
|
callback(result.error);
|
|
} else {
|
|
var processedNewBlock = _this.jobManager.processTemplate(result.response, options.publicKeyBuffer);
|
|
|
|
if (processedNewBlock) {
|
|
|
|
Object.keys(_this.varDiff).forEach(function(port){
|
|
_this.varDiff[port].setNetworkDifficulty(_this.jobManager.currentJob.difficulty);
|
|
});
|
|
}
|
|
|
|
|
|
callback(null, result.response, processedNewBlock);
|
|
callback = function(){};
|
|
}
|
|
}, true
|
|
);
|
|
}
|
|
|
|
|
|
|
|
function CheckBlockAccepted(blockHash, callback){
|
|
setTimeout(function(){
|
|
_this.daemon.cmd('getblock',
|
|
[blockHash],
|
|
function(results){
|
|
var validResults = results.filter(function(result){
|
|
return result.response && (result.response.hash === blockHash)
|
|
});
|
|
|
|
if (validResults.length >= 1){
|
|
callback(true, validResults[0].response.tx[0]);
|
|
}
|
|
else{
|
|
callback(false);
|
|
}
|
|
}
|
|
);
|
|
}, 500);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* This method is being called from the blockNotify so that when a new block is discovered by the daemon
|
|
* We can inform our miners about the newly found block
|
|
**/
|
|
this.processBlockNotify = function(blockHash, sourceTrigger) {
|
|
emitLog('Block notification via ' + sourceTrigger);
|
|
if (typeof(_this.jobManager.currentJob) !== 'undefined' && blockHash !== _this.jobManager.currentJob.rpcData.previousblockhash){
|
|
GetBlockTemplate(function(error, result){
|
|
if (error)
|
|
emitErrorLog('Block notify error getting block template for ' + options.coin.name);
|
|
})
|
|
}
|
|
};
|
|
|
|
|
|
this.relinquishMiners = function(filterFn, resultCback) {
|
|
var origStratumClients = this.stratumServer.getStratumClients();
|
|
|
|
var stratumClients = [];
|
|
Object.keys(origStratumClients).forEach(function (subId) {
|
|
stratumClients.push({subId: subId, client: origStratumClients[subId]});
|
|
});
|
|
async.filter(
|
|
stratumClients,
|
|
filterFn,
|
|
function (clientsToRelinquish) {
|
|
clientsToRelinquish.forEach(function(cObj) {
|
|
cObj.client.removeAllListeners();
|
|
_this.stratumServer.removeStratumClientBySubId(cObj.subId);
|
|
});
|
|
|
|
process.nextTick(function () {
|
|
resultCback(
|
|
clientsToRelinquish.map(
|
|
function (item) {
|
|
return item.client;
|
|
}
|
|
)
|
|
);
|
|
});
|
|
}
|
|
)
|
|
};
|
|
|
|
|
|
this.attachMiners = function(miners) {
|
|
miners.forEach(function (clientObj) {
|
|
_this.stratumServer.manuallyAddStratumClient(clientObj);
|
|
});
|
|
_this.stratumServer.broadcastMiningJobs(_this.jobManager.currentJob.getJobParams());
|
|
|
|
};
|
|
|
|
|
|
this.getStratumServer = function() {
|
|
return _this.stratumServer;
|
|
};
|
|
|
|
|
|
this.setVarDiff = function(port, varDiffInstance) {
|
|
if (typeof(_this.varDiff[port]) != 'undefined' ) {
|
|
_this.varDiff[port].removeAllListeners();
|
|
}
|
|
_this.varDiff[port] = varDiffInstance;
|
|
_this.varDiff[port].on('newDifficulty', function(client, newDiff) {
|
|
|
|
/* We request to set the newDiff @ the next difficulty retarget
|
|
(which should happen when a new job comes in - AKA BLOCK) */
|
|
client.enqueueNextDifficulty(newDiff);
|
|
|
|
/*if (options.varDiff.mode === 'fast'){
|
|
//Send new difficulty, then force miner to use new diff by resending the
|
|
//current job parameters but with the "clean jobs" flag set to false
|
|
//so the miner doesn't restart work and submit duplicate shares
|
|
client.sendDifficulty(newDiff);
|
|
var job = _this.jobManager.currentJob.getJobParams();
|
|
job[8] = false;
|
|
client.sendMiningJob(job);
|
|
}*/
|
|
|
|
});
|
|
};
|
|
|
|
};
|
|
pool.prototype.__proto__ = events.EventEmitter.prototype;
|