http sync api

8 files changed, 286 insertions, 102 deletions

diff --git a/dist/ethereum.js b/dist/ethereum.js
index d9a268fad..3ccbf9a1c 100644
--- a/dist/ethereum.js
+++ b/dist/ethereum.js
@@ -406,7 +406,7 @@ module.exports = {
 };
 
 
-},{"./web3":8}],2:[function(require,module,exports){
+},{"./web3":9}],2:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -522,7 +522,7 @@ Object.defineProperty(AutoProvider.prototype, 'onmessage', {
 
 module.exports = AutoProvider;
 
-},{"./web3":8}],3:[function(require,module,exports){
+},{"./web3":9}],3:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -625,7 +625,7 @@ var contract = function (address, desc) {
 module.exports = contract;
 
 
-},{"./abi":1,"./web3":8}],4:[function(require,module,exports){
+},{"./abi":1,"./web3":9}],4:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -713,7 +713,7 @@ Filter.prototype.logs = function () {
 
 module.exports = Filter;
 
-},{"./web3":8}],5:[function(require,module,exports){
+},{"./web3":9}],5:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -858,6 +858,74 @@ module.exports = HttpRpcProvider;
     You should have received a copy of the GNU Lesser General Public License
     along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
 */
+/** @file httpsync.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ *   Marian Oancea <marian@ethdev.com>
+ * @date 2014
+ */
+
+var HttpSyncProvider = function (host) {
+    this.handlers = [];
+    this.host = host;
+};
+
+/// Transforms inner message to proper jsonrpc object
+/// @param inner message object
+/// @returns jsonrpc object
+function formatJsonRpcObject(object) {
+    return {
+        jsonrpc: '2.0',
+        method: object.call,
+        params: object.args,
+        id: object._id
+    };
+}
+
+/// Transforms jsonrpc object to inner message
+/// @param incoming jsonrpc message 
+/// @returns inner message object
+function formatJsonRpcMessage(message) {
+    var object = JSON.parse(message);
+
+    return {
+        _id: object.id,
+        data: object.result,
+        error: object.error
+    };
+}
+
+HttpSyncProvider.prototype.send = function (payload) {
+    var data = formatJsonRpcObject(payload);
+    
+    var request = new XMLHttpRequest();
+    request.open('POST', this.host, false);
+    request.send(JSON.stringify(data));
+    
+    // check request.status
+    return request.responseText;
+};
+
+module.exports = HttpSyncProvider;
+
+
+},{}],7:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
 /** @file providermanager.js
  * @authors:
  *   Jeffrey Wilcke <jeff@ethdev.com>
@@ -900,21 +968,17 @@ var ProviderManager = function() {
 };
 
 /// sends outgoing requests, if provider is not available, enqueue the request
-ProviderManager.prototype.send = function(data, cb) {
+ProviderManager.prototype.send = function(data) {
     data._id = this.id;
-    if (cb) {
-        web3._callbacks[data._id] = cb;
-    }
 
     data.args = data.args || [];
     this.id++;
 
-    if(this.provider !== undefined) {
-        this.provider.send(data);
-    } else {
-        console.warn("provider is not set");
-        this.queued.push(data);
+    if (this.provider === undefined) {
+        console.error("provider is not set");
     }
+
+    return this.provider.send(data);
 };
 
 /// setups provider, which will be used for sending messages
@@ -962,7 +1026,7 @@ ProviderManager.prototype.stopPolling = function (pollId) {
 module.exports = ProviderManager;
 
 
-},{"./web3":8}],7:[function(require,module,exports){
+},{"./web3":9}],8:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -1021,7 +1085,7 @@ Object.defineProperty(QtProvider.prototype, "onmessage", {
 
 module.exports = QtProvider;
 
-},{}],8:[function(require,module,exports){
+},{}],9:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -1193,22 +1257,32 @@ var shhWatchMethods = function () {
 var setupMethods = function (obj, methods) {
     methods.forEach(function (method) {
         obj[method.name] = function () {
-            return flattenPromise(Array.prototype.slice.call(arguments)).then(function (args) {
-                var call = typeof method.call === "function" ? method.call(args) : method.call;
-                return {call: call, args: args};
-            }).then(function (request) {
-                return new Promise(function (resolve, reject) {
-                    web3.provider.send(request, function (err, result) {
-                        if (!err) {
-                            resolve(result);
-                            return;
-                        }
-                        reject(err);
-                    });
-                });
-            }).catch(function(err) {
-                console.error(err);
+            var args = Array.prototype.slice.call(arguments);
+            var call = typeof method.call === 'function' ? method.call(args) : method.call;
+            var result = web3.provider.send({
+                call: call,
+                args: args
             });
+            
+            result = JSON.parse(result);
+            return result.result;
+
+            //return flattenPromise(Array.prototype.slice.call(arguments)).then(function (args) {
+                //var call = typeof method.call === "function" ? method.call(args) : method.call;
+                //return {call: call, args: args};
+            //}).then(function (request) {
+                //return new Promise(function (resolve, reject) {
+                    //web3.provider.send(request, function (err, result) {
+                        //if (!err) {
+                            //resolve(result);
+                            //return;
+                        //}
+                        //reject(err);
+                    //});
+                //});
+            //}).catch(function(err) {
+                //console.error(err);
+            //});
         };
     });
 };
@@ -1219,31 +1293,47 @@ var setupProperties = function (obj, properties) {
     properties.forEach(function (property) {
         var proto = {};
         proto.get = function () {
-            return new Promise(function(resolve, reject) {
-                web3.provider.send({call: property.getter}, function(err, result) {
-                    if (!err) {
-                        resolve(result);
-                        return;
-                    }
-                    reject(err);
-                });
+            var result = web3.provider.send({
+                call: property.getter
             });
+
+            result = JSON.parse(result);
+            return result.result;
+
+           
+            //return new Promise(function(resolve, reject) {
+                //web3.provider.send({call: property.getter}, function(err, result) {
+                    //if (!err) {
+                        //resolve(result);
+                        //return;
+                    //}
+                    //reject(err);
+                //});
+            //});
         };
         if (property.setter) {
             proto.set = function (val) {
-                return flattenPromise([val]).then(function (args) {
-                    return new Promise(function (resolve) {
-                        web3.provider.send({call: property.setter, args: args}, function (err, result) {
-                            if (!err) {
-                                resolve(result);
-                                return;
-                            }
-                            reject(err);
-                        });
-                    });
-                }).catch(function (err) {
-                    console.error(err);
+                var result = web3.provider.send({
+                    call: property.setter,
+                    args: [val]
                 });
+
+                result = JSON.parse(result);
+                return result.result;
+
+                //return flattenPromise([val]).then(function (args) {
+                    //return new Promise(function (resolve) {
+                        //web3.provider.send({call: property.setter, args: args}, function (err, result) {
+                            //if (!err) {
+                                //resolve(result);
+                                //return;
+                            //}
+                            //reject(err);
+                        //});
+                    //});
+                //}).catch(function (err) {
+                    //console.error(err);
+                //});
             };
         }
         Object.defineProperty(obj, property.name, proto);
@@ -1433,7 +1523,7 @@ function messageHandler(data) {
 module.exports = web3;
 
 
-},{}],9:[function(require,module,exports){
+},{}],10:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -1541,13 +1631,15 @@ web3.filter = require('./lib/filter');
 web3.providers.WebSocketProvider = require('./lib/websocket');
 web3.providers.HttpRpcProvider = require('./lib/httprpc');
 web3.providers.QtProvider = require('./lib/qt');
+web3.providers.HttpSyncProvider = require('./lib/httpsync');
 web3.providers.AutoProvider = require('./lib/autoprovider');
 web3.eth.contract = require('./lib/contract');
 web3.abi = require('./lib/abi');
 
+
 module.exports = web3;
 
-},{"./lib/abi":1,"./lib/autoprovider":2,"./lib/contract":3,"./lib/filter":4,"./lib/httprpc":5,"./lib/providermanager":6,"./lib/qt":7,"./lib/web3":8,"./lib/websocket":9}]},{},["web3"])
+},{"./lib/abi":1,"./lib/autoprovider":2,"./lib/contract":3,"./lib/filter":4,"./lib/httprpc":5,"./lib/httpsync":6,"./lib/providermanager":7,"./lib/qt":8,"./lib/web3":9,"./lib/websocket":10}]},{},["web3"])
 
 
 //# sourceMappingURL=ethereum.js.map
\ No newline at end of file
diff --git a/dist/ethereum.js.map b/dist/ethereum.js.map
index 84d74f219..2d11823a9 100644
--- a/dist/ethereum.js.map
+++ b/dist/ethereum.js.map
@@ -7,6 +7,7 @@
     "lib/contract.js",
     "lib/filter.js",
     "lib/httprpc.js",
+    "lib/httpsync.js",
     "lib/providermanager.js",
     "lib/qt.js",
     "lib/web3.js",
@@ -14,7 +15,7 @@
     "index.js"
   ],
   "names": [],
-  "mappings": 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   "file": "generated.js",
   "sourceRoot": "",
   "sourcesContent": [
@@ -24,10 +25,11 @@
     "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file contract.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n * @date 2014\n */\n\nvar web3 = require('./web3'); // jshint ignore:line\nvar abi = require('./abi');\n\n/// method signature length in bytes\nvar ETH_METHOD_SIGNATURE_LENGTH = 4;\n\n/**\n * This method should be called when we want to call / transact some solidity method from javascript\n * it returns an object which has same methods available as solidity contract description\n * usage example: \n *\n * var abi = [{\n *      name: 'myMethod',\n *      inputs: [{ name: 'a', type: 'string' }],\n *      outputs: [{name: 'd', type: 'string' }]\n * }];  // contract abi\n *\n * var myContract = web3.eth.contract('0x0123123121', abi); // creation of contract object\n *\n * myContract.myMethod('this is test string param for call').call(); // myMethod call\n * myContract.myMethod('this is test string param for transact').transact() // myMethod transact\n *\n * @param address - address of the contract, which should be called\n * @param desc - abi json description of the contract, which is being created\n * @returns contract object\n */\nvar contract = function (address, desc) {\n    var inputParser = abi.inputParser(desc);\n    var outputParser = abi.outputParser(desc);\n\n    var contract = {};\n\n    desc.forEach(function (method) {\n\n        var displayName = abi.methodDisplayName(method.name);\n        var typeName = abi.methodTypeName(method.name);\n\n        var impl = function () {\n            var params = Array.prototype.slice.call(arguments);\n            var parsed = inputParser[displayName][typeName].apply(null, params);\n\n            var onSuccess = function (result) {\n                return outputParser[displayName][typeName](result);\n            };\n\n            return {\n                call: function (extra) {\n                    extra = extra || {};\n                    extra.to = address;\n                    return abi.methodSignature(desc, method.name).then(function (signature) {\n                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;\n                        return web3.eth.call(extra).then(onSuccess);\n                    });\n                },\n                transact: function (extra) {\n                    extra = extra || {};\n                    extra.to = address;\n                    return abi.methodSignature(desc, method.name).then(function (signature) {\n                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;\n                        web3._currentContractAbi = desc;\n                        web3._currentContractAddress = address;\n                        return web3.eth.transact(extra).then(onSuccess);\n                    });\n                }\n            };\n        };\n\n        if (contract[displayName] === undefined) {\n            contract[displayName] = impl;\n        }\n\n        contract[displayName][typeName] = impl;\n    });\n\n    return contract;\n};\n\nmodule.exports = contract;\n\n",
     "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file filter.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\nvar web3 = require('./web3'); // jshint ignore:line\n\n/// should be used when we want to watch something\n/// it's using inner polling mechanism and is notified about changes\nvar Filter = function(options, impl) {\n    this.impl = impl;\n    this.callbacks = [];\n\n    var self = this;\n    this.promise = impl.newFilter(options);\n    this.promise.then(function (id) {\n        self.id = id;\n        web3.on(impl.changed, id, self.trigger.bind(self));\n        web3.provider.startPolling({call: impl.changed, args: [id]}, id);\n    });\n};\n\n/// alias for changed*\nFilter.prototype.arrived = function(callback) {\n    this.changed(callback);\n};\n\n/// gets called when there is new eth/shh message\nFilter.prototype.changed = function(callback) {\n    var self = this;\n    this.promise.then(function(id) {\n        self.callbacks.push(callback);\n    });\n};\n\n/// trigger calling new message from people\nFilter.prototype.trigger = function(messages) {\n    for(var i = 0; i < this.callbacks.length; i++) {\n        this.callbacks[i].call(this, messages);\n    }\n};\n\n/// should be called to uninstall current filter\nFilter.prototype.uninstall = function() {\n    var self = this;\n    this.promise.then(function (id) {\n        self.impl.uninstallFilter(id);\n        web3.provider.stopPolling(id);\n        web3.off(impl.changed, id);\n    });\n};\n\n/// should be called to manually trigger getting latest messages from the client\nFilter.prototype.messages = function() {\n    var self = this;\n    return this.promise.then(function (id) {\n        return self.impl.getMessages(id);\n    });\n};\n\n/// alias for messages\nFilter.prototype.logs = function () {\n    return this.messages();\n};\n\nmodule.exports = Filter;\n",
     "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file httprpc.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest; // jshint ignore:line\n*/}\n\n/**\n * HttpRpcProvider object prototype is implementing 'provider protocol'\n * Should be used when we want to connect to ethereum backend over http && jsonrpc\n * It's compatible with cpp client\n * The contructor allows to specify host uri\n * This provider is using in-browser polling mechanism\n */\nvar HttpRpcProvider = function (host) {\n    this.handlers = [];\n    this.host = host;\n};\n\n/// Transforms inner message to proper jsonrpc object\n/// @param inner message object\n/// @returns jsonrpc object\nfunction formatJsonRpcObject(object) {\n    return {\n        jsonrpc: '2.0',\n        method: object.call,\n        params: object.args,\n        id: object._id\n    };\n}\n\n/// Transforms jsonrpc object to inner message\n/// @param incoming jsonrpc message \n/// @returns inner message object\nfunction formatJsonRpcMessage(message) {\n    var object = JSON.parse(message);\n\n    return {\n        _id: object.id,\n        data: object.result,\n        error: object.error\n    };\n}\n\n/// Prototype object method \n/// Asynchronously sends request to server\n/// @param payload is inner message object\n/// @param cb is callback which is being called when response is comes back\nHttpRpcProvider.prototype.sendRequest = function (payload, cb) {\n    var data = formatJsonRpcObject(payload);\n\n    var request = new XMLHttpRequest();\n    request.open(\"POST\", this.host, true);\n    request.send(JSON.stringify(data));\n    request.onreadystatechange = function () {\n        if (request.readyState === 4 && cb) {\n            cb(request);\n        }\n    };\n};\n\n/// Prototype object method\n/// Should be called when we want to send single api request to server\n/// Asynchronous\n/// On response it passes message to handlers\n/// @param payload is inner message object\nHttpRpcProvider.prototype.send = function (payload) {\n    var self = this;\n    this.sendRequest(payload, function (request) {\n        self.handlers.forEach(function (handler) {\n            handler.call(self, formatJsonRpcMessage(request.responseText));\n        });\n    });\n};\n\n/// Prototype object method\n/// Should be called only for polling requests\n/// Asynchronous\n/// On response it passege message to handlers, but only if message's result is true or not empty array\n/// Otherwise response is being silently ignored\n/// @param payload is inner message object\n/// @id is id of poll that we are calling\nHttpRpcProvider.prototype.poll = function (payload, id) {\n    var self = this;\n    this.sendRequest(payload, function (request) {\n        var parsed = JSON.parse(request.responseText);\n        if (parsed.error || (parsed.result instanceof Array ? parsed.result.length === 0 : !parsed.result)) {\n            return;\n        }\n        self.handlers.forEach(function (handler) {\n            handler.call(self, {_event: payload.call, _id: id, data: parsed.result});\n        });\n    });\n};\n\n/// Prototype object property\n/// Should be used to set message handlers for this provider\nObject.defineProperty(HttpRpcProvider.prototype, \"onmessage\", {\n    set: function (handler) {\n        this.handlers.push(handler);\n    }\n});\n\nmodule.exports = HttpRpcProvider;\n\n",
-    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file providermanager.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\nvar web3 = require('./web3'); // jshint ignore:line\n\n/**\n * Provider manager object prototype\n * It's responsible for passing messages to providers\n * If no provider is set it's responsible for queuing requests\n * It's also responsible for polling the ethereum node for incoming messages\n * Default poll timeout is 12 seconds\n * If we are running ethereum.js inside ethereum browser, there are backend based tools responsible for polling,\n * and provider manager polling mechanism is not used\n */\nvar ProviderManager = function() {\n    this.queued = [];\n    this.polls = [];\n    this.ready = false;\n    this.provider = undefined;\n    this.id = 1;\n\n    var self = this;\n    var poll = function () {\n        if (self.provider && self.provider.poll) {\n            self.polls.forEach(function (data) {\n                data.data._id = self.id;\n                self.id++;\n                self.provider.poll(data.data, data.id);\n            });\n        }\n        setTimeout(poll, 12000);\n    };\n    poll();\n};\n\n/// sends outgoing requests, if provider is not available, enqueue the request\nProviderManager.prototype.send = function(data, cb) {\n    data._id = this.id;\n    if (cb) {\n        web3._callbacks[data._id] = cb;\n    }\n\n    data.args = data.args || [];\n    this.id++;\n\n    if(this.provider !== undefined) {\n        this.provider.send(data);\n    } else {\n        console.warn(\"provider is not set\");\n        this.queued.push(data);\n    }\n};\n\n/// setups provider, which will be used for sending messages\nProviderManager.prototype.set = function(provider) {\n    if(this.provider !== undefined && this.provider.unload !== undefined) {\n        this.provider.unload();\n    }\n\n    this.provider = provider;\n    this.ready = true;\n};\n\n/// resends queued messages\nProviderManager.prototype.sendQueued = function() {\n    for(var i = 0; this.queued.length; i++) {\n        // Resend\n        this.send(this.queued[i]);\n    }\n};\n\n/// @returns true if the provider i properly set\nProviderManager.prototype.installed = function() {\n    return this.provider !== undefined;\n};\n\n/// this method is only used, when we do not have native qt bindings and have to do polling on our own\n/// should be callled, on start watching for eth/shh changes\nProviderManager.prototype.startPolling = function (data, pollId) {\n    if (!this.provider || !this.provider.poll) {\n        return;\n    }\n    this.polls.push({data: data, id: pollId});\n};\n\n/// should be called to stop polling for certain watch changes\nProviderManager.prototype.stopPolling = function (pollId) {\n    for (var i = this.polls.length; i--;) {\n        var poll = this.polls[i];\n        if (poll.id === pollId) {\n            this.polls.splice(i, 1);\n        }\n    }\n};\n\nmodule.exports = ProviderManager;\n\n",
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file httpsync.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n * @date 2014\n */\n\nvar HttpSyncProvider = function (host) {\n    this.handlers = [];\n    this.host = host;\n};\n\n/// Transforms inner message to proper jsonrpc object\n/// @param inner message object\n/// @returns jsonrpc object\nfunction formatJsonRpcObject(object) {\n    return {\n        jsonrpc: '2.0',\n        method: object.call,\n        params: object.args,\n        id: object._id\n    };\n}\n\n/// Transforms jsonrpc object to inner message\n/// @param incoming jsonrpc message \n/// @returns inner message object\nfunction formatJsonRpcMessage(message) {\n    var object = JSON.parse(message);\n\n    return {\n        _id: object.id,\n        data: object.result,\n        error: object.error\n    };\n}\n\nHttpSyncProvider.prototype.send = function (payload) {\n    var data = formatJsonRpcObject(payload);\n    \n    var request = new XMLHttpRequest();\n    request.open('POST', this.host, false);\n    request.send(JSON.stringify(data));\n    \n    // check request.status\n    return request.responseText;\n};\n\nmodule.exports = HttpSyncProvider;\n\n",
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file providermanager.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\nvar web3 = require('./web3'); // jshint ignore:line\n\n/**\n * Provider manager object prototype\n * It's responsible for passing messages to providers\n * If no provider is set it's responsible for queuing requests\n * It's also responsible for polling the ethereum node for incoming messages\n * Default poll timeout is 12 seconds\n * If we are running ethereum.js inside ethereum browser, there are backend based tools responsible for polling,\n * and provider manager polling mechanism is not used\n */\nvar ProviderManager = function() {\n    this.queued = [];\n    this.polls = [];\n    this.ready = false;\n    this.provider = undefined;\n    this.id = 1;\n\n    var self = this;\n    var poll = function () {\n        if (self.provider && self.provider.poll) {\n            self.polls.forEach(function (data) {\n                data.data._id = self.id;\n                self.id++;\n                self.provider.poll(data.data, data.id);\n            });\n        }\n        setTimeout(poll, 12000);\n    };\n    poll();\n};\n\n/// sends outgoing requests, if provider is not available, enqueue the request\nProviderManager.prototype.send = function(data) {\n    data._id = this.id;\n\n    data.args = data.args || [];\n    this.id++;\n\n    if (this.provider === undefined) {\n        console.error(\"provider is not set\");\n    }\n\n    return this.provider.send(data);\n};\n\n/// setups provider, which will be used for sending messages\nProviderManager.prototype.set = function(provider) {\n    if(this.provider !== undefined && this.provider.unload !== undefined) {\n        this.provider.unload();\n    }\n\n    this.provider = provider;\n    this.ready = true;\n};\n\n/// resends queued messages\nProviderManager.prototype.sendQueued = function() {\n    for(var i = 0; this.queued.length; i++) {\n        // Resend\n        this.send(this.queued[i]);\n    }\n};\n\n/// @returns true if the provider i properly set\nProviderManager.prototype.installed = function() {\n    return this.provider !== undefined;\n};\n\n/// this method is only used, when we do not have native qt bindings and have to do polling on our own\n/// should be callled, on start watching for eth/shh changes\nProviderManager.prototype.startPolling = function (data, pollId) {\n    if (!this.provider || !this.provider.poll) {\n        return;\n    }\n    this.polls.push({data: data, id: pollId});\n};\n\n/// should be called to stop polling for certain watch changes\nProviderManager.prototype.stopPolling = function (pollId) {\n    for (var i = this.polls.length; i--;) {\n        var poll = this.polls[i];\n        if (poll.id === pollId) {\n            this.polls.splice(i, 1);\n        }\n    }\n};\n\nmodule.exports = ProviderManager;\n\n",
     "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file qt.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n * @date 2014\n */\n\n/**\n * QtProvider object prototype is implementing 'provider protocol'\n * Should be used inside ethereum browser. It's compatible with cpp and go clients.\n * It uses navigator.qt object to pass the messages to native bindings\n */\nvar QtProvider = function() {\n    this.handlers = [];\n\n    var self = this;\n    navigator.qt.onmessage = function (message) {\n        self.handlers.forEach(function (handler) {\n            handler.call(self, JSON.parse(message.data));\n        });\n    };\n};\n\n/// Prototype object method\n/// Should be called when we want to send single api request to native bindings\n/// Asynchronous\n/// Response will be received by navigator.qt.onmessage method and passed to handlers\n/// @param payload is inner message object\nQtProvider.prototype.send = function(payload) {\n    navigator.qt.postMessage(JSON.stringify(payload));\n};\n\n/// Prototype object property\n/// Should be used to set message handlers for this provider\nObject.defineProperty(QtProvider.prototype, \"onmessage\", {\n    set: function(handler) {\n        this.handlers.push(handler);\n    }\n});\n\nmodule.exports = QtProvider;\n",
-    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file web3.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\n/// Recursively resolves all promises in given object and replaces the resolved values with promises\n/// @param any object/array/promise/anything else..\n/// @returns (resolves) object with replaced promises with their result \nfunction flattenPromise (obj) {\n    if (obj instanceof Promise) {\n        return Promise.resolve(obj);\n    }\n\n    if (obj instanceof Array) {\n        return new Promise(function (resolve) {\n            var promises = obj.map(function (o) {\n                return flattenPromise(o);\n            });\n\n            return Promise.all(promises).then(function (res) {\n                for (var i = 0; i < obj.length; i++) {\n                    obj[i] = res[i];\n                }\n                resolve(obj);\n            });\n        });\n    }\n\n    if (obj instanceof Object) {\n        return new Promise(function (resolve) {\n            var keys = Object.keys(obj);\n            var promises = keys.map(function (key) {\n                return flattenPromise(obj[key]);\n            });\n\n            return Promise.all(promises).then(function (res) {\n                for (var i = 0; i < keys.length; i++) {\n                    obj[keys[i]] = res[i];\n                }\n                resolve(obj);\n            });\n        });\n    }\n\n    return Promise.resolve(obj);\n}\n\n/// @returns an array of objects describing web3 api methods\nvar web3Methods = function () {\n    return [\n    { name: 'sha3', call: 'web3_sha3' }\n    ];\n};\n\n/// @returns an array of objects describing web3.eth api methods\nvar ethMethods = function () {\n    var blockCall = function (args) {\n        return typeof args[0] === \"string\" ? \"eth_blockByHash\" : \"eth_blockByNumber\";\n    };\n\n    var transactionCall = function (args) {\n        return typeof args[0] === \"string\" ? 'eth_transactionByHash' : 'eth_transactionByNumber';\n    };\n\n    var uncleCall = function (args) {\n        return typeof args[0] === \"string\" ? 'eth_uncleByHash' : 'eth_uncleByNumber';\n    };\n\n    var methods = [\n    { name: 'balanceAt', call: 'eth_balanceAt' },\n    { name: 'stateAt', call: 'eth_stateAt' },\n    { name: 'storageAt', call: 'eth_storageAt' },\n    { name: 'countAt', call: 'eth_countAt'},\n    { name: 'codeAt', call: 'eth_codeAt' },\n    { name: 'transact', call: 'eth_transact' },\n    { name: 'call', call: 'eth_call' },\n    { name: 'block', call: blockCall },\n    { name: 'transaction', call: transactionCall },\n    { name: 'uncle', call: uncleCall },\n    { name: 'compilers', call: 'eth_compilers' },\n    { name: 'lll', call: 'eth_lll' },\n    { name: 'solidity', call: 'eth_solidity' },\n    { name: 'serpent', call: 'eth_serpent' },\n    { name: 'logs', call: 'eth_logs' }\n    ];\n    return methods;\n};\n\n/// @returns an array of objects describing web3.eth api properties\nvar ethProperties = function () {\n    return [\n    { name: 'coinbase', getter: 'eth_coinbase', setter: 'eth_setCoinbase' },\n    { name: 'listening', getter: 'eth_listening', setter: 'eth_setListening' },\n    { name: 'mining', getter: 'eth_mining', setter: 'eth_setMining' },\n    { name: 'gasPrice', getter: 'eth_gasPrice' },\n    { name: 'account', getter: 'eth_account' },\n    { name: 'accounts', getter: 'eth_accounts' },\n    { name: 'peerCount', getter: 'eth_peerCount' },\n    { name: 'defaultBlock', getter: 'eth_defaultBlock', setter: 'eth_setDefaultBlock' },\n    { name: 'number', getter: 'eth_number'}\n    ];\n};\n\n/// @returns an array of objects describing web3.db api methods\nvar dbMethods = function () {\n    return [\n    { name: 'put', call: 'db_put' },\n    { name: 'get', call: 'db_get' },\n    { name: 'putString', call: 'db_putString' },\n    { name: 'getString', call: 'db_getString' }\n    ];\n};\n\n/// @returns an array of objects describing web3.shh api methods\nvar shhMethods = function () {\n    return [\n    { name: 'post', call: 'shh_post' },\n    { name: 'newIdentity', call: 'shh_newIdentity' },\n    { name: 'haveIdentity', call: 'shh_haveIdentity' },\n    { name: 'newGroup', call: 'shh_newGroup' },\n    { name: 'addToGroup', call: 'shh_addToGroup' }\n    ];\n};\n\n/// @returns an array of objects describing web3.eth.watch api methods\nvar ethWatchMethods = function () {\n    var newFilter = function (args) {\n        return typeof args[0] === 'string' ? 'eth_newFilterString' : 'eth_newFilter';\n    };\n\n    return [\n    { name: 'newFilter', call: newFilter },\n    { name: 'uninstallFilter', call: 'eth_uninstallFilter' },\n    { name: 'getMessages', call: 'eth_filterLogs' }\n    ];\n};\n\n/// @returns an array of objects describing web3.shh.watch api methods\nvar shhWatchMethods = function () {\n    return [\n    { name: 'newFilter', call: 'shh_newFilter' },\n    { name: 'uninstallFilter', call: 'shh_uninstallFilter' },\n    { name: 'getMessage', call: 'shh_getMessages' }\n    ];\n};\n\n/// creates methods in a given object based on method description on input\n/// setups api calls for these methods\nvar setupMethods = function (obj, methods) {\n    methods.forEach(function (method) {\n        obj[method.name] = function () {\n            return flattenPromise(Array.prototype.slice.call(arguments)).then(function (args) {\n                var call = typeof method.call === \"function\" ? method.call(args) : method.call;\n                return {call: call, args: args};\n            }).then(function (request) {\n                return new Promise(function (resolve, reject) {\n                    web3.provider.send(request, function (err, result) {\n                        if (!err) {\n                            resolve(result);\n                            return;\n                        }\n                        reject(err);\n                    });\n                });\n            }).catch(function(err) {\n                console.error(err);\n            });\n        };\n    });\n};\n\n/// creates properties in a given object based on properties description on input\n/// setups api calls for these properties\nvar setupProperties = function (obj, properties) {\n    properties.forEach(function (property) {\n        var proto = {};\n        proto.get = function () {\n            return new Promise(function(resolve, reject) {\n                web3.provider.send({call: property.getter}, function(err, result) {\n                    if (!err) {\n                        resolve(result);\n                        return;\n                    }\n                    reject(err);\n                });\n            });\n        };\n        if (property.setter) {\n            proto.set = function (val) {\n                return flattenPromise([val]).then(function (args) {\n                    return new Promise(function (resolve) {\n                        web3.provider.send({call: property.setter, args: args}, function (err, result) {\n                            if (!err) {\n                                resolve(result);\n                                return;\n                            }\n                            reject(err);\n                        });\n                    });\n                }).catch(function (err) {\n                    console.error(err);\n                });\n            };\n        }\n        Object.defineProperty(obj, property.name, proto);\n    });\n};\n\n// TODO: import from a dependency, don't duplicate.\nvar hexToDec = function (hex) {\n    return parseInt(hex, 16).toString();\n};\n\nvar decToHex = function (dec) {\n    return parseInt(dec).toString(16);\n};\n\n/// setups web3 object, and it's in-browser executed methods\nvar web3 = {\n    _callbacks: {},\n    _events: {},\n    providers: {},\n\n    toHex: function(str) {\n        var hex = \"\";\n        for(var i = 0; i < str.length; i++) {\n            var n = str.charCodeAt(i).toString(16);\n            hex += n.length < 2 ? '0' + n : n;\n        }\n\n        return hex;\n    },\n\n    /// @returns ascii string representation of hex value prefixed with 0x\n    toAscii: function(hex) {\n        // Find termination\n        var str = \"\";\n        var i = 0, l = hex.length;\n        if (hex.substring(0, 2) === '0x')\n            i = 2;\n        for(; i < l; i+=2) {\n            var code = parseInt(hex.substr(i, 2), 16);\n            if(code === 0) {\n                break;\n            }\n\n            str += String.fromCharCode(code);\n        }\n\n        return str;\n    },\n\n    /// @returns hex representation (prefixed by 0x) of ascii string\n    fromAscii: function(str, pad) {\n        pad = pad === undefined ? 0 : pad;\n        var hex = this.toHex(str);\n        while(hex.length < pad*2)\n            hex += \"00\";\n        return \"0x\" + hex;\n    },\n\n    /// @returns decimal representaton of hex value prefixed by 0x\n    toDecimal: function (val) {\n        return hexToDec(val.substring(2));\n    },\n\n    /// @returns hex representation (prefixed by 0x) of decimal value\n    fromDecimal: function (val) {\n        return \"0x\" + decToHex(val);\n    },\n\n    /// used to transform value/string to eth string\n    toEth: function(str) {\n        var val = typeof str === \"string\" ? str.indexOf('0x') === 0 ? parseInt(str.substr(2), 16) : parseInt(str) : str;\n        var unit = 0;\n        var units = [ 'wei', 'Kwei', 'Mwei', 'Gwei', 'szabo', 'finney', 'ether', 'grand', 'Mether', 'Gether', 'Tether', 'Pether', 'Eether', 'Zether', 'Yether', 'Nether', 'Dether', 'Vether', 'Uether' ];\n        while (val > 3000 && unit < units.length - 1)\n        {\n            val /= 1000;\n            unit++;\n        }\n        var s = val.toString().length < val.toFixed(2).length ? val.toString() : val.toFixed(2);\n        var replaceFunction = function($0, $1, $2) {\n            return $1 + ',' + $2;\n        };\n\n        while (true) {\n            var o = s;\n            s = s.replace(/(\\d)(\\d\\d\\d[\\.\\,])/, replaceFunction);\n            if (o === s)\n                break;\n        }\n        return s + ' ' + units[unit];\n    },\n\n    /// eth object prototype\n    eth: {\n        watch: function (params) {\n            return new web3.filter(params, ethWatch);\n        }\n    },\n\n    /// db object prototype\n    db: {},\n\n    /// shh object prototype\n    shh: {\n        watch: function (params) {\n            return new web3.filter(params, shhWatch);\n        }\n    },\n\n    /// used by filter to register callback with given id\n    on: function(event, id, cb) {\n        if(web3._events[event] === undefined) {\n            web3._events[event] = {};\n        }\n\n        web3._events[event][id] = cb;\n        return this;\n    },\n\n    /// used by filter to unregister callback with given id\n    off: function(event, id) {\n        if(web3._events[event] !== undefined) {\n            delete web3._events[event][id];\n        }\n\n        return this;\n    },\n\n    /// used to trigger callback registered by filter\n    trigger: function(event, id, data) {\n        var callbacks = web3._events[event];\n        if (!callbacks || !callbacks[id]) {\n            return;\n        }\n        var cb = callbacks[id];\n        cb(data);\n    },\n\n    /// @returns true if provider is installed\n    haveProvider: function() {\n        return !!web3.provider.provider;\n    }\n};\n\n/// setups all api methods\nsetupMethods(web3, web3Methods());\nsetupMethods(web3.eth, ethMethods());\nsetupProperties(web3.eth, ethProperties());\nsetupMethods(web3.db, dbMethods());\nsetupMethods(web3.shh, shhMethods());\n\nvar ethWatch = {\n    changed: 'eth_changed'\n};\n\nsetupMethods(ethWatch, ethWatchMethods());\n\nvar shhWatch = {\n    changed: 'shh_changed'\n};\n\nsetupMethods(shhWatch, shhWatchMethods());\n\nweb3.setProvider = function(provider) {\n    provider.onmessage = messageHandler;\n    web3.provider.set(provider);\n    web3.provider.sendQueued();\n};\n\n/// callled when there is new incoming message\nfunction messageHandler(data) {\n    if(data._event !== undefined) {\n        web3.trigger(data._event, data._id, data.data);\n        return;\n    }\n\n    if(data._id) {\n        var cb = web3._callbacks[data._id];\n        if (cb) {\n            cb.call(this, data.error, data.data);\n            delete web3._callbacks[data._id];\n        }\n    }\n}\n\nmodule.exports = web3;\n\n",
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file web3.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\n/// Recursively resolves all promises in given object and replaces the resolved values with promises\n/// @param any object/array/promise/anything else..\n/// @returns (resolves) object with replaced promises with their result \nfunction flattenPromise (obj) {\n    if (obj instanceof Promise) {\n        return Promise.resolve(obj);\n    }\n\n    if (obj instanceof Array) {\n        return new Promise(function (resolve) {\n            var promises = obj.map(function (o) {\n                return flattenPromise(o);\n            });\n\n            return Promise.all(promises).then(function (res) {\n                for (var i = 0; i < obj.length; i++) {\n                    obj[i] = res[i];\n                }\n                resolve(obj);\n            });\n        });\n    }\n\n    if (obj instanceof Object) {\n        return new Promise(function (resolve) {\n            var keys = Object.keys(obj);\n            var promises = keys.map(function (key) {\n                return flattenPromise(obj[key]);\n            });\n\n            return Promise.all(promises).then(function (res) {\n                for (var i = 0; i < keys.length; i++) {\n                    obj[keys[i]] = res[i];\n                }\n                resolve(obj);\n            });\n        });\n    }\n\n    return Promise.resolve(obj);\n}\n\n/// @returns an array of objects describing web3 api methods\nvar web3Methods = function () {\n    return [\n    { name: 'sha3', call: 'web3_sha3' }\n    ];\n};\n\n/// @returns an array of objects describing web3.eth api methods\nvar ethMethods = function () {\n    var blockCall = function (args) {\n        return typeof args[0] === \"string\" ? \"eth_blockByHash\" : \"eth_blockByNumber\";\n    };\n\n    var transactionCall = function (args) {\n        return typeof args[0] === \"string\" ? 'eth_transactionByHash' : 'eth_transactionByNumber';\n    };\n\n    var uncleCall = function (args) {\n        return typeof args[0] === \"string\" ? 'eth_uncleByHash' : 'eth_uncleByNumber';\n    };\n\n    var methods = [\n    { name: 'balanceAt', call: 'eth_balanceAt' },\n    { name: 'stateAt', call: 'eth_stateAt' },\n    { name: 'storageAt', call: 'eth_storageAt' },\n    { name: 'countAt', call: 'eth_countAt'},\n    { name: 'codeAt', call: 'eth_codeAt' },\n    { name: 'transact', call: 'eth_transact' },\n    { name: 'call', call: 'eth_call' },\n    { name: 'block', call: blockCall },\n    { name: 'transaction', call: transactionCall },\n    { name: 'uncle', call: uncleCall },\n    { name: 'compilers', call: 'eth_compilers' },\n    { name: 'lll', call: 'eth_lll' },\n    { name: 'solidity', call: 'eth_solidity' },\n    { name: 'serpent', call: 'eth_serpent' },\n    { name: 'logs', call: 'eth_logs' }\n    ];\n    return methods;\n};\n\n/// @returns an array of objects describing web3.eth api properties\nvar ethProperties = function () {\n    return [\n    { name: 'coinbase', getter: 'eth_coinbase', setter: 'eth_setCoinbase' },\n    { name: 'listening', getter: 'eth_listening', setter: 'eth_setListening' },\n    { name: 'mining', getter: 'eth_mining', setter: 'eth_setMining' },\n    { name: 'gasPrice', getter: 'eth_gasPrice' },\n    { name: 'account', getter: 'eth_account' },\n    { name: 'accounts', getter: 'eth_accounts' },\n    { name: 'peerCount', getter: 'eth_peerCount' },\n    { name: 'defaultBlock', getter: 'eth_defaultBlock', setter: 'eth_setDefaultBlock' },\n    { name: 'number', getter: 'eth_number'}\n    ];\n};\n\n/// @returns an array of objects describing web3.db api methods\nvar dbMethods = function () {\n    return [\n    { name: 'put', call: 'db_put' },\n    { name: 'get', call: 'db_get' },\n    { name: 'putString', call: 'db_putString' },\n    { name: 'getString', call: 'db_getString' }\n    ];\n};\n\n/// @returns an array of objects describing web3.shh api methods\nvar shhMethods = function () {\n    return [\n    { name: 'post', call: 'shh_post' },\n    { name: 'newIdentity', call: 'shh_newIdentity' },\n    { name: 'haveIdentity', call: 'shh_haveIdentity' },\n    { name: 'newGroup', call: 'shh_newGroup' },\n    { name: 'addToGroup', call: 'shh_addToGroup' }\n    ];\n};\n\n/// @returns an array of objects describing web3.eth.watch api methods\nvar ethWatchMethods = function () {\n    var newFilter = function (args) {\n        return typeof args[0] === 'string' ? 'eth_newFilterString' : 'eth_newFilter';\n    };\n\n    return [\n    { name: 'newFilter', call: newFilter },\n    { name: 'uninstallFilter', call: 'eth_uninstallFilter' },\n    { name: 'getMessages', call: 'eth_filterLogs' }\n    ];\n};\n\n/// @returns an array of objects describing web3.shh.watch api methods\nvar shhWatchMethods = function () {\n    return [\n    { name: 'newFilter', call: 'shh_newFilter' },\n    { name: 'uninstallFilter', call: 'shh_uninstallFilter' },\n    { name: 'getMessage', call: 'shh_getMessages' }\n    ];\n};\n\n/// creates methods in a given object based on method description on input\n/// setups api calls for these methods\nvar setupMethods = function (obj, methods) {\n    methods.forEach(function (method) {\n        obj[method.name] = function () {\n            var args = Array.prototype.slice.call(arguments);\n            var call = typeof method.call === 'function' ? method.call(args) : method.call;\n            var result = web3.provider.send({\n                call: call,\n                args: args\n            });\n            \n            result = JSON.parse(result);\n            return result.result;\n\n            //return flattenPromise(Array.prototype.slice.call(arguments)).then(function (args) {\n                //var call = typeof method.call === \"function\" ? method.call(args) : method.call;\n                //return {call: call, args: args};\n            //}).then(function (request) {\n                //return new Promise(function (resolve, reject) {\n                    //web3.provider.send(request, function (err, result) {\n                        //if (!err) {\n                            //resolve(result);\n                            //return;\n                        //}\n                        //reject(err);\n                    //});\n                //});\n            //}).catch(function(err) {\n                //console.error(err);\n            //});\n        };\n    });\n};\n\n/// creates properties in a given object based on properties description on input\n/// setups api calls for these properties\nvar setupProperties = function (obj, properties) {\n    properties.forEach(function (property) {\n        var proto = {};\n        proto.get = function () {\n            var result = web3.provider.send({\n                call: property.getter\n            });\n\n            result = JSON.parse(result);\n            return result.result;\n\n           \n            //return new Promise(function(resolve, reject) {\n                //web3.provider.send({call: property.getter}, function(err, result) {\n                    //if (!err) {\n                        //resolve(result);\n                        //return;\n                    //}\n                    //reject(err);\n                //});\n            //});\n        };\n        if (property.setter) {\n            proto.set = function (val) {\n                var result = web3.provider.send({\n                    call: property.setter,\n                    args: [val]\n                });\n\n                result = JSON.parse(result);\n                return result.result;\n\n                //return flattenPromise([val]).then(function (args) {\n                    //return new Promise(function (resolve) {\n                        //web3.provider.send({call: property.setter, args: args}, function (err, result) {\n                            //if (!err) {\n                                //resolve(result);\n                                //return;\n                            //}\n                            //reject(err);\n                        //});\n                    //});\n                //}).catch(function (err) {\n                    //console.error(err);\n                //});\n            };\n        }\n        Object.defineProperty(obj, property.name, proto);\n    });\n};\n\n// TODO: import from a dependency, don't duplicate.\nvar hexToDec = function (hex) {\n    return parseInt(hex, 16).toString();\n};\n\nvar decToHex = function (dec) {\n    return parseInt(dec).toString(16);\n};\n\n/// setups web3 object, and it's in-browser executed methods\nvar web3 = {\n    _callbacks: {},\n    _events: {},\n    providers: {},\n\n    toHex: function(str) {\n        var hex = \"\";\n        for(var i = 0; i < str.length; i++) {\n            var n = str.charCodeAt(i).toString(16);\n            hex += n.length < 2 ? '0' + n : n;\n        }\n\n        return hex;\n    },\n\n    /// @returns ascii string representation of hex value prefixed with 0x\n    toAscii: function(hex) {\n        // Find termination\n        var str = \"\";\n        var i = 0, l = hex.length;\n        if (hex.substring(0, 2) === '0x')\n            i = 2;\n        for(; i < l; i+=2) {\n            var code = parseInt(hex.substr(i, 2), 16);\n            if(code === 0) {\n                break;\n            }\n\n            str += String.fromCharCode(code);\n        }\n\n        return str;\n    },\n\n    /// @returns hex representation (prefixed by 0x) of ascii string\n    fromAscii: function(str, pad) {\n        pad = pad === undefined ? 0 : pad;\n        var hex = this.toHex(str);\n        while(hex.length < pad*2)\n            hex += \"00\";\n        return \"0x\" + hex;\n    },\n\n    /// @returns decimal representaton of hex value prefixed by 0x\n    toDecimal: function (val) {\n        return hexToDec(val.substring(2));\n    },\n\n    /// @returns hex representation (prefixed by 0x) of decimal value\n    fromDecimal: function (val) {\n        return \"0x\" + decToHex(val);\n    },\n\n    /// used to transform value/string to eth string\n    toEth: function(str) {\n        var val = typeof str === \"string\" ? str.indexOf('0x') === 0 ? parseInt(str.substr(2), 16) : parseInt(str) : str;\n        var unit = 0;\n        var units = [ 'wei', 'Kwei', 'Mwei', 'Gwei', 'szabo', 'finney', 'ether', 'grand', 'Mether', 'Gether', 'Tether', 'Pether', 'Eether', 'Zether', 'Yether', 'Nether', 'Dether', 'Vether', 'Uether' ];\n        while (val > 3000 && unit < units.length - 1)\n        {\n            val /= 1000;\n            unit++;\n        }\n        var s = val.toString().length < val.toFixed(2).length ? val.toString() : val.toFixed(2);\n        var replaceFunction = function($0, $1, $2) {\n            return $1 + ',' + $2;\n        };\n\n        while (true) {\n            var o = s;\n            s = s.replace(/(\\d)(\\d\\d\\d[\\.\\,])/, replaceFunction);\n            if (o === s)\n                break;\n        }\n        return s + ' ' + units[unit];\n    },\n\n    /// eth object prototype\n    eth: {\n        watch: function (params) {\n            return new web3.filter(params, ethWatch);\n        }\n    },\n\n    /// db object prototype\n    db: {},\n\n    /// shh object prototype\n    shh: {\n        watch: function (params) {\n            return new web3.filter(params, shhWatch);\n        }\n    },\n\n    /// used by filter to register callback with given id\n    on: function(event, id, cb) {\n        if(web3._events[event] === undefined) {\n            web3._events[event] = {};\n        }\n\n        web3._events[event][id] = cb;\n        return this;\n    },\n\n    /// used by filter to unregister callback with given id\n    off: function(event, id) {\n        if(web3._events[event] !== undefined) {\n            delete web3._events[event][id];\n        }\n\n        return this;\n    },\n\n    /// used to trigger callback registered by filter\n    trigger: function(event, id, data) {\n        var callbacks = web3._events[event];\n        if (!callbacks || !callbacks[id]) {\n            return;\n        }\n        var cb = callbacks[id];\n        cb(data);\n    },\n\n    /// @returns true if provider is installed\n    haveProvider: function() {\n        return !!web3.provider.provider;\n    }\n};\n\n/// setups all api methods\nsetupMethods(web3, web3Methods());\nsetupMethods(web3.eth, ethMethods());\nsetupProperties(web3.eth, ethProperties());\nsetupMethods(web3.db, dbMethods());\nsetupMethods(web3.shh, shhMethods());\n\nvar ethWatch = {\n    changed: 'eth_changed'\n};\n\nsetupMethods(ethWatch, ethWatchMethods());\n\nvar shhWatch = {\n    changed: 'shh_changed'\n};\n\nsetupMethods(shhWatch, shhWatchMethods());\n\nweb3.setProvider = function(provider) {\n    provider.onmessage = messageHandler;\n    web3.provider.set(provider);\n    web3.provider.sendQueued();\n};\n\n/// callled when there is new incoming message\nfunction messageHandler(data) {\n    if(data._event !== undefined) {\n        web3.trigger(data._event, data._id, data.data);\n        return;\n    }\n\n    if(data._id) {\n        var cb = web3._callbacks[data._id];\n        if (cb) {\n            cb.call(this, data.error, data.data);\n            delete web3._callbacks[data._id];\n        }\n    }\n}\n\nmodule.exports = web3;\n\n",
     "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file websocket.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var WebSocket = require('ws'); // jshint ignore:line\n*/}\n\n/**\n * WebSocketProvider object prototype is implementing 'provider protocol'\n * Should be used when we want to connect to ethereum backend over websockets\n * It's compatible with go client\n * The constructor allows to specify host uri\n */\nvar WebSocketProvider = function(host) {\n\n    // onmessage handlers\n    this.handlers = [];\n\n    // queue will be filled with messages if send is invoked before the ws is ready\n    this.queued = [];\n    this.ready = false;\n\n    this.ws = new WebSocket(host);\n\n    var self = this;\n    this.ws.onmessage = function(event) {\n        for(var i = 0; i < self.handlers.length; i++) {\n            self.handlers[i].call(self, JSON.parse(event.data), event);\n        }\n    };\n\n    this.ws.onopen = function() {\n        self.ready = true;\n\n        for (var i = 0; i < self.queued.length; i++) {\n            // Resend\n            self.send(self.queued[i]);\n        }\n    };\n};\n\n/// Prototype object method\n/// Should be called when we want to send single api request to server\n/// Asynchronous, it's using websockets\n/// Response for the call will be received by ws.onmessage\n/// @param payload is inner message object\nWebSocketProvider.prototype.send = function(payload) {\n    if (this.ready) {\n        var data = JSON.stringify(payload);\n\n        this.ws.send(data);\n    } else {\n        this.queued.push(payload);\n    }\n};\n\n/// Prototype object method\n/// Should be called to add handlers\nWebSocketProvider.prototype.onMessage = function(handler) {\n    this.handlers.push(handler);\n};\n\n/// Prototype object method\n/// Should be called to close websockets connection\nWebSocketProvider.prototype.unload = function() {\n    this.ws.close();\n};\n\n/// Prototype object property\n/// Should be used to set message handlers for this provider\nObject.defineProperty(WebSocketProvider.prototype, \"onmessage\", {\n    set: function(provider) { this.onMessage(provider); }\n});\n\nif (typeof(module) !== \"undefined\")\n    module.exports = WebSocketProvider;\n",
-    "var web3 = require('./lib/web3');\nvar ProviderManager = require('./lib/providermanager');\nweb3.provider = new ProviderManager();\nweb3.filter = require('./lib/filter');\nweb3.providers.WebSocketProvider = require('./lib/websocket');\nweb3.providers.HttpRpcProvider = require('./lib/httprpc');\nweb3.providers.QtProvider = require('./lib/qt');\nweb3.providers.AutoProvider = require('./lib/autoprovider');\nweb3.eth.contract = require('./lib/contract');\nweb3.abi = require('./lib/abi');\n\nmodule.exports = web3;\n"
+    "var web3 = require('./lib/web3');\nvar ProviderManager = require('./lib/providermanager');\nweb3.provider = new ProviderManager();\nweb3.filter = require('./lib/filter');\nweb3.providers.WebSocketProvider = require('./lib/websocket');\nweb3.providers.HttpRpcProvider = require('./lib/httprpc');\nweb3.providers.QtProvider = require('./lib/qt');\nweb3.providers.HttpSyncProvider = require('./lib/httpsync');\nweb3.providers.AutoProvider = require('./lib/autoprovider');\nweb3.eth.contract = require('./lib/contract');\nweb3.abi = require('./lib/abi');\n\n\nmodule.exports = web3;\n"
   ]
 }
\ No newline at end of file
diff --git a/dist/ethereum.min.js b/dist/ethereum.min.js
index 7b1cffa57..c38f2b12f 100644
--- a/dist/ethereum.min.js
+++ b/dist/ethereum.min.js
@@ -1 +1 @@
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BigNumber(e)),e=e.round(),e.lessThan(0)&&(e=new BigNumber("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",16).plus(e).plus(1)),e=e.toString(16)):e=0===e.indexOf("0x")?e.substr(2):"string"==typeof e?c(new BigNumber(e)):(+e).toString(16),s(e,t)},l=function(e){return n.fromAscii(e,r).substr(2)},p=function(e){return"000000000000000000000000000000000000000000000000000000000000000"+(e?"1":"0")},h=function(e){return c(new BigNumber(e).times(new BigNumber(2).pow(128)))},d=function(e,t){return f(e)||a("string")(e)?c(t.length):""},v=function(){return[{type:a("uint"),format:c},{type:a("int"),format:c},{type:a("hash"),format:c},{type:a("string"),format:l},{type:a("real"),format:h},{type:a("ureal"),format:h},{type:u("address"),format:c},{type:u("bool"),format:p}]},g=v(),m=function(e,t,n){var r="",i=o(e,t);if(-1!==i){var s=e[i];return s.inputs.forEach(function(e,t){r+=d(e.type,n[t])}),s.inputs.forEach(function(e,t){for(var i=!1,o=0;o<g.length&&!i;o++)i=g[o].type(s.inputs[t].type,n[t]);i||console.error("input parser does not support type: "+s.inputs[t].type);var a=g[o-1].format,u="";u=f(s.inputs[t].type)?n[t].reduce(function(e,t){return e+a(t)},""):a(n[t]),r+=u}),r}},b=function(e){return"1"===new BigNumber(e.substr(0,1),16).toString(2).substr(0,1)},y=function(e){return b(e)?new BigNumber(e,16).minus(new BigNumber("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",16)).minus(1):new BigNumber(e,16)},_=function(e){return new BigNumber(e,16)},w=function(e){return y(e).dividedBy(new BigNumber(2).pow(128))},P=function(e){return _(e).dividedBy(new BigNumber(2).pow(128))},N=function(e){return"0x"+e},x=function(e){return"0000000000000000000000000000000000000000000000000000000000000001"===e?!0:!1},S=function(e){return n.toAscii(e)},k=function(e){return"0x"+e.slice(e.length-40,e.length)},O=function(e){return f(e)||a("string")(e)?2*r:0},B=function(){return[{type:a("uint"),format:_},{type:a("int"),format:y},{type:a("hash"),format:N},{type:a("string"),format:S},{type:a("real"),format:w},{type:a("ureal"),format:P},{type:u("address"),format:k},{type:u("bool"),format:x}]},A=B(),q=function(e,t,n){var i=o(e,t);if(-1!==i){n=n.slice(2);var s=[],u=e[i],c=2*r,l=u.outputs.reduce(function(e,t){return e+O(t.type)},0),p=n.slice(0,l);return n=n.slice(l),u.outputs.forEach(function(e,t){for(var r=!1,i=0;i<A.length&&!r;i++)r=A[i].type(u.outputs[t].type);r||console.error("output parser does not support type: "+u.outputs[t].type);var o=A[i-1].format;if(f(u.outputs[t].type)){var l=_(p.slice(0,c));p=p.slice(c);for(var h=[],d=0;l>d;d++)h.push(o(n.slice(0,c))),n=n.slice(c);s.push(h)}else a("string")(u.outputs[t].type)?(p=p.slice(c),s.push(o(n.slice(0,c))),n=n.slice(c)):(s.push(o(n.slice(0,c))),n=n.slice(c))}),s}},E=function(e){var t=e.indexOf("(");return-1!==t?e.substr(0,t):e},F=function(e){var t=e.indexOf("(");return-1!==t?e.substr(t+1,e.length-1-(t+1)):""},M=function(e){var t={};return e.forEach(function(n){var r=E(n.name),i=F(n.name),o=function(){var t=Array.prototype.slice.call(arguments);return m(e,n.name,t)};void 0===t[r]&&(t[r]=o),t[r][i]=o}),t},D=function(e){var t={};return e.forEach(function(n){var r=E(n.name),i=F(n.name),o=function(t){return q(e,n.name,t)};void 0===t[r]&&(t[r]=o),t[r][i]=o}),t},T=function(e,t){return n.sha3(n.fromAscii(t))};t.exports={inputParser:M,outputParser:D,methodSignature:T,methodDisplayName:E,methodTypeName:F}},{"./web3":8}],2:[function(e,t){var n=e("./web3"),r=function(e){if(!n.haveProvider()){if(this.sendQueue=[],this.onmessageQueue=[],navigator.qt)return void(this.provider=new n.providers.QtProvider);e=e||{};var t={httprpc:e.httprpc||"http://localhost:8080",websockets:e.websockets||"ws://localhost:40404/eth"},r=this,i=function(e){o.close(),e?r.provider=new n.providers.WebSocketProvider(t.websockets):(r.provider=new n.providers.HttpRpcProvider(t.httprpc),r.poll=r.provider.poll.bind(r.provider)),r.sendQueue.forEach(function(e){r.provider.send(e)}),r.onmessageQueue.forEach(function(e){r.provider.onmessage=e})},o=new WebSocket(t.websockets);o.onopen=function(){i(!0)},o.onerror=function(){i(!1)}}};r.prototype.send=function(e){return this.provider?void this.provider.send(e):void this.sendQueue.push(e)},Object.defineProperty(r.prototype,"onmessage",{set:function(e){return this.provider?void(this.provider.onmessage=e):void this.onmessageQueue.push(e)}}),t.exports=r},{"./web3":8}],3:[function(e,t){var n=e("./web3"),r=e("./abi"),i=4,o=function(e,t){var o=r.inputParser(t),s=r.outputParser(t),a={};return t.forEach(function(u){var f=r.methodDisplayName(u.name),c=r.methodTypeName(u.name),l=function(){var a=Array.prototype.slice.call(arguments),l=o[f][c].apply(null,a),p=function(e){return s[f][c](e)};return{call:function(o){return o=o||{},o.to=e,r.methodSignature(t,u.name).then(function(e){return 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n},o=function(){return[{name:"coinbase",getter:"eth_coinbase",setter:"eth_setCoinbase"},{name:"listening",getter:"eth_listening",setter:"eth_setListening"},{name:"mining",getter:"eth_mining",setter:"eth_setMining"},{name:"gasPrice",getter:"eth_gasPrice"},{name:"account",getter:"eth_account"},{name:"accounts",getter:"eth_accounts"},{name:"peerCount",getter:"eth_peerCount"},{name:"defaultBlock",getter:"eth_defaultBlock",setter:"eth_setDefaultBlock"},{name:"number",getter:"eth_number"}]},s=function(){return[{name:"put",call:"db_put"},{name:"get",call:"db_get"},{name:"putString",call:"db_putString"},{name:"getString",call:"db_getString"}]},a=function(){return[{name:"post",call:"shh_post"},{name:"newIdentity",call:"shh_newIdentity"},{name:"haveIdentity",call:"shh_haveIdentity"},{name:"newGroup",call:"shh_newGroup"},{name:"addToGroup",call:"shh_addToGroup"}]},u=function(){var e=function(e){return"string"==typeof e[0]?"eth_newFilterString":"eth_newFilter"};return[{name:"newFilter",call:e},{name:"uninstallFilter",call:"eth_uninstallFilter"},{name:"getMessages",call:"eth_filterLogs"}]},f=function(){return[{name:"newFilter",call:"shh_newFilter"},{name:"uninstallFilter",call:"shh_uninstallFilter"},{name:"getMessage",call:"shh_getMessages"}]},c=function(e,t){t.forEach(function(t){e[t.name]=function(){var e=Array.prototype.slice.call(arguments),r="function"==typeof t.call?t.call(e):t.call,n=d.provider.send({call:r,args:e});return n=JSON.parse(n),n.result}})},l=function(e,t){t.forEach(function(t){var r={};r.get=function(){var e=d.provider.send({call:t.getter});return e=JSON.parse(e),e.result},t.setter&&(r.set=function(e){var r=d.provider.send({call:t.setter,args:[e]});return r=JSON.parse(r),r.result}),Object.defineProperty(e,t.name,r)})},p=function(e){return parseInt(e,16).toString()},h=function(e){return parseInt(e).toString(16)},d={_callbacks:{},_events:{},providers:{},toHex:function(e){for(var t="",r=0;r<e.length;r++){var n=e.charCodeAt(r).toString(16);t+=n.length<2?"0"+n:n}return t},toAscii:function(e){var t="",r=0,n=e.length;for("0x"===e.substring(0,2)&&(r=2);n>r;r+=2){var i=parseInt(e.substr(r,2),16);if(0===i)break;t+=String.fromCharCode(i)}return t},fromAscii:function(e,t){t=void 0===t?0:t;for(var r=this.toHex(e);r.length<2*t;)r+="00";return"0x"+r},toDecimal:function(e){return p(e.substring(2))},fromDecimal:function(e){return"0x"+h(e)},toEth:function(e){for(var t="string"==typeof e?0===e.indexOf("0x")?parseInt(e.substr(2),16):parseInt(e):e,r=0,n=["wei","Kwei","Mwei","Gwei","szabo","finney","ether","grand","Mether","Gether","Tether","Pether","Eether","Zether","Yether","Nether","Dether","Vether","Uether"];t>3e3&&r<n.length-1;)t/=1e3,r++;for(var i=t.toString().length<t.toFixed(2).length?t.toString():t.toFixed(2),o=function(e,t,r){return t+","+r};;){var s=i;if(i=i.replace(/(\d)(\d\d\d[\.\,])/,o),s===i)break}return i+" "+n[r]},eth:{watch:function(e){return new d.filter(e,v)}},db:{},shh:{watch:function(e){return new d.filter(e,g)}},on:function(e,t,r){return void 0===d._events[e]&&(d._events[e]={}),d._events[e][t]=r,this},off:function(e,t){return void 0!==d._events[e]&&delete d._events[e][t],this},trigger:function(e,t,r){var n=d._events[e];if(n&&n[t]){var i=n[t];i(r)}},haveProvider:function(){return!!d.provider.provider}};c(d,n()),c(d.eth,i()),l(d.eth,o()),c(d.db,s()),c(d.shh,a());var v={changed:"eth_changed"};c(v,u());var g={changed:"shh_changed"};c(g,f()),d.setProvider=function(e){e.onmessage=r,d.provider.set(e),d.provider.sendQueued()},t.exports=d},{}],10:[function(e,t){var r=function(e){this.handlers=[],this.queued=[],this.ready=!1,this.ws=new WebSocket(e);var t=this;this.ws.onmessage=function(e){for(var r=0;r<t.handlers.length;r++)t.handlers[r].call(t,JSON.parse(e.data),e)},this.ws.onopen=function(){t.ready=!0;for(var e=0;e<t.queued.length;e++)t.send(t.queued[e])}};r.prototype.send=function(e){if(this.ready){var t=JSON.stringify(e);this.ws.send(t)}else this.queued.push(e)},r.prototype.onMessage=function(e){this.handlers.push(e)},r.prototype.unload=function(){this.ws.close()},Object.defineProperty(r.prototype,"onmessage",{set:function(e){this.onMessage(e)}}),"undefined"!=typeof t&&(t.exports=r)},{}],web3:[function(e,t){var r=e("./lib/web3"),n=e("./lib/providermanager");r.provider=new n,r.filter=e("./lib/filter"),r.providers.WebSocketProvider=e("./lib/websocket"),r.providers.HttpRpcProvider=e("./lib/httprpc"),r.providers.QtProvider=e("./lib/qt"),r.providers.HttpSyncProvider=e("./lib/httpsync"),r.providers.AutoProvider=e("./lib/autoprovider"),r.eth.contract=e("./lib/contract"),r.abi=e("./lib/abi"),t.exports=r},{"./lib/abi":1,"./lib/autoprovider":2,"./lib/contract":3,"./lib/filter":4,"./lib/httprpc":5,"./lib/httpsync":6,"./lib/providermanager":7,"./lib/qt":8,"./lib/web3":9,"./lib/websocket":10}]},{},["web3"]);
\ No newline at end of file
diff --git a/example/balance.html b/example/balance.html
index d70ea648b..53a65805f 100644
--- a/example/balance.html
+++ b/example/balance.html
@@ -8,7 +8,7 @@
 <script type="text/javascript">
    
     var web3 = require('web3');
-    web3.setProvider(new web3.providers.AutoProvider());
+    web3.setProvider(new web3.providers.HttpSyncProvider('http://localhost:8080'));
 
     function watchBalance() {
         var coinbase = web3.eth.coinbase;
diff --git a/index.js b/index.js
index 0c5bf3d44..523931bd2 100644
--- a/index.js
+++ b/index.js
@@ -5,8 +5,10 @@ web3.filter = require('./lib/filter');
 web3.providers.WebSocketProvider = require('./lib/websocket');
 web3.providers.HttpRpcProvider = require('./lib/httprpc');
 web3.providers.QtProvider = require('./lib/qt');
+web3.providers.HttpSyncProvider = require('./lib/httpsync');
 web3.providers.AutoProvider = require('./lib/autoprovider');
 web3.eth.contract = require('./lib/contract');
 web3.abi = require('./lib/abi');
 
+
 module.exports = web3;
diff --git a/lib/httpsync.js b/lib/httpsync.js
new file mode 100644
index 000000000..20bdbd1a2
--- /dev/null
+++ b/lib/httpsync.js
@@ -0,0 +1,66 @@
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file httpsync.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ *   Marian Oancea <marian@ethdev.com>
+ * @date 2014
+ */
+
+var HttpSyncProvider = function (host) {
+    this.handlers = [];
+    this.host = host;
+};
+
+/// Transforms inner message to proper jsonrpc object
+/// @param inner message object
+/// @returns jsonrpc object
+function formatJsonRpcObject(object) {
+    return {
+        jsonrpc: '2.0',
+        method: object.call,
+        params: object.args,
+        id: object._id
+    };
+}
+
+/// Transforms jsonrpc object to inner message
+/// @param incoming jsonrpc message 
+/// @returns inner message object
+function formatJsonRpcMessage(message) {
+    var object = JSON.parse(message);
+
+    return {
+        _id: object.id,
+        data: object.result,
+        error: object.error
+    };
+}
+
+HttpSyncProvider.prototype.send = function (payload) {
+    var data = formatJsonRpcObject(payload);
+    
+    var request = new XMLHttpRequest();
+    request.open('POST', this.host, false);
+    request.send(JSON.stringify(data));
+    
+    // check request.status
+    return request.responseText;
+};
+
+module.exports = HttpSyncProvider;
+
diff --git a/lib/providermanager.js b/lib/providermanager.js
index f79a9b087..83ea9417b 100644
--- a/lib/providermanager.js
+++ b/lib/providermanager.js
@@ -56,21 +56,17 @@ var ProviderManager = function() {
 };
 
 /// sends outgoing requests, if provider is not available, enqueue the request
-ProviderManager.prototype.send = function(data, cb) {
+ProviderManager.prototype.send = function(data) {
     data._id = this.id;
-    if (cb) {
-        web3._callbacks[data._id] = cb;
-    }
 
     data.args = data.args || [];
     this.id++;
 
-    if(this.provider !== undefined) {
-        this.provider.send(data);
-    } else {
-        console.warn("provider is not set");
-        this.queued.push(data);
+    if (this.provider === undefined) {
+        console.error("provider is not set");
     }
+
+    return this.provider.send(data);
 };
 
 /// setups provider, which will be used for sending messages
diff --git a/lib/web3.js b/lib/web3.js
index f071eea49..58bcc0c3f 100644
--- a/lib/web3.js
+++ b/lib/web3.js
@@ -169,22 +169,32 @@ var shhWatchMethods = function () {
 var setupMethods = function (obj, methods) {
     methods.forEach(function (method) {
         obj[method.name] = function () {
-            return flattenPromise(Array.prototype.slice.call(arguments)).then(function (args) {
-                var call = typeof method.call === "function" ? method.call(args) : method.call;
-                return {call: call, args: args};
-            }).then(function (request) {
-                return new Promise(function (resolve, reject) {
-                    web3.provider.send(request, function (err, result) {
-                        if (!err) {
-                            resolve(result);
-                            return;
-                        }
-                        reject(err);
-                    });
-                });
-            }).catch(function(err) {
-                console.error(err);
+            var args = Array.prototype.slice.call(arguments);
+            var call = typeof method.call === 'function' ? method.call(args) : method.call;
+            var result = web3.provider.send({
+                call: call,
+                args: args
             });
+            
+            result = JSON.parse(result);
+            return result.result;
+
+            //return flattenPromise(Array.prototype.slice.call(arguments)).then(function (args) {
+                //var call = typeof method.call === "function" ? method.call(args) : method.call;
+                //return {call: call, args: args};
+            //}).then(function (request) {
+                //return new Promise(function (resolve, reject) {
+                    //web3.provider.send(request, function (err, result) {
+                        //if (!err) {
+                            //resolve(result);
+                            //return;
+                        //}
+                        //reject(err);
+                    //});
+                //});
+            //}).catch(function(err) {
+                //console.error(err);
+            //});
         };
     });
 };
@@ -195,31 +205,47 @@ var setupProperties = function (obj, properties) {
     properties.forEach(function (property) {
         var proto = {};
         proto.get = function () {
-            return new Promise(function(resolve, reject) {
-                web3.provider.send({call: property.getter}, function(err, result) {
-                    if (!err) {
-                        resolve(result);
-                        return;
-                    }
-                    reject(err);
-                });
+            var result = web3.provider.send({
+                call: property.getter
             });
+
+            result = JSON.parse(result);
+            return result.result;
+
+           
+            //return new Promise(function(resolve, reject) {
+                //web3.provider.send({call: property.getter}, function(err, result) {
+                    //if (!err) {
+                        //resolve(result);
+                        //return;
+                    //}
+                    //reject(err);
+                //});
+            //});
         };
         if (property.setter) {
             proto.set = function (val) {
-                return flattenPromise([val]).then(function (args) {
-                    return new Promise(function (resolve) {
-                        web3.provider.send({call: property.setter, args: args}, function (err, result) {
-                            if (!err) {
-                                resolve(result);
-                                return;
-                            }
-                            reject(err);
-                        });
-                    });
-                }).catch(function (err) {
-                    console.error(err);
+                var result = web3.provider.send({
+                    call: property.setter,
+                    args: [val]
                 });
+
+                result = JSON.parse(result);
+                return result.result;
+
+                //return flattenPromise([val]).then(function (args) {
+                    //return new Promise(function (resolve) {
+                        //web3.provider.send({call: property.setter, args: args}, function (err, result) {
+                            //if (!err) {
+                                //resolve(result);
+                                //return;
+                            //}
+                            //reject(err);
+                        //});
+                    //});
+                //}).catch(function (err) {
+                    //console.error(err);
+                //});
             };
         }
         Object.defineProperty(obj, property.name, proto);