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Added check to see if a submitted share matched a miner's previous difficulty from before vardiff retarget.

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This commit is contained in:
Matt 2014-04-01 16:58:20 -06:00
parent 1e9bd77072
commit 7d5c7ed277
3 changed files with 12 additions and 3 deletions
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13
lib/jobManager.js
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@ -125,7 +125,7 @@ var JobManager = module.exports = function JobManager(maxDifficulty, hashDigest,
};
this.processShare = function(jobId, difficulty, extraNonce1, extraNonce2, nTime, nonce, ipAddress, workerName){
this.processShare = function(jobId, previousDifficulty, difficulty, extraNonce1, extraNonce2, nTime, nonce, ipAddress, workerName){
var shareError = function(error){
_this.emit('share', {
job: jobId,
@ -190,8 +190,15 @@ var JobManager = module.exports = function JobManager(maxDifficulty, hashDigest,
else {
var targetUser = maxDifficulty.div(difficulty);
if (headerBigNum.gt(targetUser)){
var shareDiff = maxDifficulty.div(headerBigNum).toString();
return shareError([23, 'low difficulty share of ' + shareDiff]);
//Check if share matched a previous difficulty from before vardiff retarget
if (previousDifficulty && !headerBigNum.gt(maxDifficulty.div(previousDifficulty))){
difficulty = previousDifficulty;
}
else{
var shareDiff = maxDifficulty.div(headerBigNum).toString();
return shareError([23, 'low difficulty share of ' + shareDiff]);
}
}
}
if (!!blockHex) {

1
lib/pool.js
View File

@ -553,6 +553,7 @@ var pool = module.exports = function pool(options, authorizeFn){
}).on('submit', function(params, resultCallback){
var result =_this.jobManager.processShare(
params.jobId,
client.previousDifficulty,
client.difficulty,
client.extraNonce1,
params.extraNonce2,

1
lib/stratum.js
View File

@ -240,6 +240,7 @@ var StratumClient = function(options){
if (difficulty === this.difficulty)
return false;
_this.previousDifficulty = _this.difficulty;
_this.difficulty = difficulty;
sendJson({
id : null,