Added difficulty parameter to the authorizeFn

example/init.js

@@ -24,6 +24,18 @@ var coins = [];
 
 var confFolder = 'coins';
 
+
+var authorizeFN = function (ip, workerName, password, cback) {
+    // Default implementation just returns true
+    console.log("Athorize ["+ip+"] "+workerName+":"+password);
+    cback(
+        null,  // error
+        true,  // authorized?
+        false, // should disconnect user?
+        16    // difficulty
+    );
+}
+
 fs.readdir(confFolder, function(err, files){
     if (err) throw err;
     files.forEach(function(file){
@@ -35,7 +47,7 @@ fs.readdir(confFolder, function(err, files){
             var coin = new Coin(coinJson);
             console.log('Starting pool for ' + coin.options.name);
             
-            coin.pool = new pool(coin);
+            coin.pool = new pool(coin, authorizeFN );
             coin.shareManager = new ShareManager(coin.pool);
 
             coins.push(coin);

index.js

@@ -12,7 +12,7 @@ var util       = require('./libs/util.js');
  *  - 'started'() - when the pool is effectively started.
  *  - 'share'(isValid, dataObj) - In case it's valid the dataObj variable will contain (TODO) and in case it's invalid (TODO) 
  */
-var pool = module.exports = function pool(coin){
+var pool = module.exports = function pool(coin, authFn){
 
     var _this = this;
     var publicKeyBuffer;
@@ -24,16 +24,14 @@ var pool = module.exports = function pool(coin){
     });
 
 
+
     // Worker authorizer fn. 
     var authorizeFn;
-    if ( typeof (coin.authorizeFn) === 'function' ) {
+    if ( typeof (authFn) === 'function' ) {
-        authorizeFn = coin.authorizeFn;
+        authorizeFn = authFn;
     } else {
-        authorizeFn = function (ip, workerName, password, cback) {
+        // probably undefined. 
-            // Default implementation just returns true
+        process.exit("ERROR: an authorize Function is needed.")
-            console.log("Athorize ["+ip+"] "+workerName+":"+password);
-            cback(null, true, true);
-        };
     }
 
 
@@ -133,18 +131,19 @@ var pool = module.exports = function pool(coin){
             console.log('Stratum server started on port ' + coin.options.stratumPort + ' for ' + coin.options.name);
         }).on('client', function(client){
             client.on('subscription', function(params, resultCallback){
+
                 var extraNonce = _this.jobManager.extraNonceCounter.next();
                 var extraNonce2Size = _this.jobManager.extraNonce2Size;
                 resultCallback(null,
                     extraNonce,
                     extraNonce2Size
                 );
-                this.sendDifficulty(coin.options.difficulty);
+                var clientThis = this;
-                if (typeof(_this.jobManager.currentJob) === 'undefined') {
+
-                    console.warn("[subscription] Cannot send job to client. No jobs in jobManager!");
+                //if (clientThis.authorized) {
-                } else {
+                clientThis.sendMiningJob(_this.jobManager.currentJob.getJobParams());
-                    this.sendMiningJob(_this.jobManager.currentJob.getJobParams());
+                //}
-                }
+                
             }).on('submit', function(params, resultCallback){
                 var result =_this.jobManager.processShare(
                     params.jobId,

libs/stratum.js

@@ -53,6 +53,9 @@ var StratumClient = function(options){
     }
 
     function handleSubscribe(message){
+        if (! _this._authorized ) {
+            _this.requestedSubscriptionBeforeAuth = true;
+        }
         _this.emit('subscription',
             {},
             function(error, extraNonce1, extraNonce2Size){
@@ -79,9 +82,10 @@ var StratumClient = function(options){
     }
 
     function handleAuthorize(message){
-        var workerName = message.params[0];
+        this.workerIP   = options.socket.address().address; 
-        var workerPass = message.params[1];
+        this.workerName = message.params[0];
-        options.authorizeFn(options.socket.address().address, workerName, workerPass, function(err, authorized, shouldCloseSocket) {
+        this.workerPass = message.params[1];
+        options.authorizeFn(this.workerIP, this.workerName, this.workerPass, function(err, authorized, shouldCloseSocket, difficulty) {
             _this.authorized =  ( ! err && authorized );
             sendJson({
                     id     : message.id,
@@ -93,6 +97,29 @@ var StratumClient = function(options){
             if (typeof(shouldCloseSocket) === 'boolean' && shouldCloseSocket) {
                 options.socket.end();
             }
+
+            // Send difficulty
+            if (typeof(difficulty) === 'function') {
+                difficulty(_this.workerName, function(err, diff) {
+                    if (err) {
+                        console.error("Cannot set difficulty for "+_this.workernName+" error: "+JSON.stringify(err));
+                        options.socket.end();
+                    } else {
+                        _this.sendDifficulty(diff);    
+                    }
+                    
+                });
+            } else if (typeof(difficulty) === 'number') {
+                _this.sendDifficulty(difficulty);
+            } else {
+                process.exit("Difficulty from authorizeFn callback is neither a function or a number");
+            }
+
+            if (_this.requestedSubscriptionBeforeAuth === true) {
+                delete _this.requestedSubscriptionBeforeAuth; // we do not need this anymore.
+                //TODO: We should send a mining job here. For now we send it before the auth has taken place but.....
+            }
+
         });
     }
 
@@ -180,6 +207,7 @@ var StratumClient = function(options){
 
     this.sendDifficulty = function(difficulty){
         _this.difficulty = difficulty;
+        console.log("SENDING DIFFICULTY "+difficulty);
         sendJson({
             id    : null,
             method: "mining.set_difficulty",