From 9d8255a620b23024564c2549697b991c898f2684 Mon Sep 17 00:00:00 2001
From: Matt <zone117x@gmail.com>
Date: Wed, 19 Feb 2014 16:07:25 -0700
Subject: [PATCH] Vardiff perfect fix

---
 lib/pool.js    |  2 +-
 lib/stratum.js |  9 +++++----
 lib/varDiff.js | 10 +++++-----
 3 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/lib/pool.js b/lib/pool.js
index d9909e2..db8fe8e 100644
--- a/lib/pool.js
+++ b/lib/pool.js
@@ -284,7 +284,7 @@ var pool = module.exports = function pool(options, authorizeFn){
             }).on('submit', function(params, resultCallback){
                 var result =_this.jobManager.processShare(
                     params.jobId,
-                    client.difficulty,
+                    client.currentDifficulty,
                     client.extraNonce1,
                     params.extraNonce2,
                     params.nTime,
diff --git a/lib/stratum.js b/lib/stratum.js
index 1138ce1..81cc447 100644
--- a/lib/stratum.js
+++ b/lib/stratum.js
@@ -139,9 +139,9 @@ var StratumClient = function(options){
                 });
             }
         );
-        if (_this.lastEmittedDiff !== _this.difficulty){
-            _this.lastEmittedDiff = _this.difficulty
-            _this.emit('difficultyChanged', _this.difficulty);
+        if (_this.lastEmittedDiff !== _this.currentDifficulty){
+            _this.lastEmittedDiff = _this.currentDifficulty
+            _this.emit('difficultyChanged', _this.currentDifficulty);
         }
     }
 
@@ -207,7 +207,7 @@ var StratumClient = function(options){
         }
 
         if (difficulty !== this.difficulty) {
-            this.difficulty = difficulty;
+            _this.latestDifficulty = difficulty;
             sendJson({
                 id    : null,
                 method: "mining.set_difficulty",
@@ -226,6 +226,7 @@ var StratumClient = function(options){
             method: "mining.notify",
             params: jobParams
         });
+        _this.currentDifficulty = _this.latestDifficulty
     };
 };
 StratumClient.prototype.__proto__ = events.EventEmitter.prototype;
diff --git a/lib/varDiff.js b/lib/varDiff.js
index 494a3ef..415705e 100644
--- a/lib/varDiff.js
+++ b/lib/varDiff.js
@@ -78,7 +78,7 @@ var varDiff = module.exports = function varDiff(options, poolDifficulty){
                 lastRtc = ts - options.retargetTime / 2;
                 lastTs = ts;
                 timeBuffer = new RingBuffer(bufferSize);
-                console.log(bufferSize+ ' first time share vardiff curdiff: '+client.difficulty);
+                console.log(bufferSize+ ' first time share vardiff curdiff: '+client.currentDifficulty);
                 return;
             }
             var sinceLast = ts - lastTs;
@@ -97,10 +97,10 @@ var varDiff = module.exports = function varDiff(options, poolDifficulty){
 
             var ddiff;
 
-            if (avg > tMax && client.difficulty > options.minDifficulty) {
+            if (avg > tMax && client.currentDifficulty > options.minDifficulty) {
                 ddiff = 0.5;
-                if (ddiff * client.difficulty < options.minDifficulty) {
-                    ddiff = options.minDifficulty / client.difficulty;
+                if (ddiff * client.currentDifficulty < options.minDifficulty) {
+                    ddiff = options.minDifficulty / client.currentDifficulty;
                 }
             } else if (avg < tMin) {
                 ddiff = 2;
@@ -119,7 +119,7 @@ var varDiff = module.exports = function varDiff(options, poolDifficulty){
                 return;
             }
 
-            var newDiff = client.difficulty * ddiff;
+            var newDiff = client.currentDifficulty * ddiff;
             timeBuffer.clear();
 
             //console.log('sending new difficutly ' + newDiff);