Merge commit 'eb4984c0d036c1420e782ca136810e851e33fb37' into natspec

21 files changed, 265 insertions, 1181 deletions

diff --git a/dist/ethereum.js b/dist/ethereum.js
index d9a268fad..c3e179e36 100644
--- a/dist/ethereum.js
+++ b/dist/ethereum.js
@@ -33,6 +33,9 @@ BigNumber.config({ ROUNDING_MODE: BigNumber.ROUND_DOWN });
 
 var ETH_PADDING = 32;
 
+/// method signature length in bytes
+var ETH_METHOD_SIGNATURE_LENGTH = 4;
+
 /// Finds first index of array element matching pattern
 /// @param array
 /// @param callback pattern
@@ -390,11 +393,10 @@ var outputParser = function (json) {
     return parser;
 };
 
-/// @param json abi for contract
 /// @param method name for which we want to get method signature
 /// @returns (promise) contract method signature for method with given name
-var methodSignature = function (json, name) {
-    return web3.sha3(web3.fromAscii(name));
+var methodSignature = function (name) {
+    return web3.sha3(web3.fromAscii(name)).slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2);
 };
 
 module.exports = {
@@ -406,123 +408,7 @@ module.exports = {
 };
 
 
-},{"./web3":8}],2:[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 autoprovider.js
- * @authors:
- *   Marek Kotewicz <marek@ethdev.com>
- *   Marian Oancea <marian@ethdev.com>
- * @date 2014
- */
-
-/*
- * @brief if qt object is available, uses QtProvider,
- * if not tries to connect over websockets
- * if it fails, it uses HttpRpcProvider
- */
-
-var web3 = require('./web3'); // jshint ignore:line
-if ("build" !== 'build') {/*
-    var WebSocket = require('ws'); // jshint ignore:line
-*/}
-
-/**
- * AutoProvider object prototype is implementing 'provider protocol'
- * Automatically tries to setup correct provider(Qt, WebSockets or HttpRpc)
- * First it checkes if we are ethereum browser (if navigator.qt object is available)
- * if yes, we are using QtProvider
- * if no, we check if it is possible to establish websockets connection with ethereum (ws://localhost:40404/eth is default)
- * if it's not possible, we are using httprpc provider (http://localhost:8080)
- * The constructor allows you to specify uris on which we are trying to connect over http or websockets
- * You can do that by passing objects with fields httrpc and websockets
- */
-var AutoProvider = function (userOptions) {
-    if (web3.haveProvider()) {
-        return;
-    }
-
-    // before we determine what provider we are, we have to cache request
-    this.sendQueue = [];
-    this.onmessageQueue = [];
-
-    if (navigator.qt) {
-        this.provider = new web3.providers.QtProvider();
-        return;
-    }
-
-    userOptions = userOptions || {};
-    var options = {
-        httprpc: userOptions.httprpc || 'http://localhost:8080',
-        websockets: userOptions.websockets || 'ws://localhost:40404/eth'
-    };
-
-    var self = this;
-    var closeWithSuccess = function (success) {
-        ws.close();
-        if (success) {
-            self.provider = new web3.providers.WebSocketProvider(options.websockets);
-        } else {
-            self.provider = new web3.providers.HttpRpcProvider(options.httprpc);
-            self.poll = self.provider.poll.bind(self.provider);
-        }
-        self.sendQueue.forEach(function (payload) {
-            self.provider.send(payload);
-        });
-        self.onmessageQueue.forEach(function (handler) {
-            self.provider.onmessage = handler;
-        });
-    };
-
-    var ws = new WebSocket(options.websockets);
-
-    ws.onopen = function() {
-        closeWithSuccess(true);
-    };
-
-    ws.onerror = function() {
-        closeWithSuccess(false);
-    };
-};
-
-/// Sends message forward to the provider, that is being used
-/// if provider is not yet set, enqueues the message
-AutoProvider.prototype.send = function (payload) {
-    if (this.provider) {
-        this.provider.send(payload);
-        return;
-    }
-    this.sendQueue.push(payload);
-};
-
-/// On incoming message sends the message to the provider that is currently being used
-Object.defineProperty(AutoProvider.prototype, 'onmessage', {
-    set: function (handler) {
-        if (this.provider) {
-            this.provider.onmessage = handler;
-            return;
-        }
-        this.onmessageQueue.push(handler);
-    }
-});
-
-module.exports = AutoProvider;
-
-},{"./web3":8}],3:[function(require,module,exports){
+},{"./web3":6}],2:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -548,9 +434,6 @@ module.exports = AutoProvider;
 var web3 = require('./web3'); // jshint ignore:line
 var abi = require('./abi');
 
-/// method signature length in bytes
-var ETH_METHOD_SIGNATURE_LENGTH = 4;
-
 /**
  * This method should be called when we want to call / transact some solidity method from javascript
  * it returns an object which has same methods available as solidity contract description
@@ -585,29 +468,29 @@ var contract = function (address, desc) {
         var impl = function () {
             var params = Array.prototype.slice.call(arguments);
             var parsed = inputParser[displayName][typeName].apply(null, params);
-
-            var onSuccess = function (result) {
-                return outputParser[displayName][typeName](result);
-            };
+            var signature = abi.methodSignature(method.name);
 
             return {
                 call: function (extra) {
                     extra = extra || {};
                     extra.to = address;
-                    return abi.methodSignature(desc, method.name).then(function (signature) {
-                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;
-                        return web3.eth.call(extra).then(onSuccess);
-                    });
+                    extra.data = signature + parsed;
+
+                    var result = web3.eth.call(extra);
+                    return outputParser[displayName][typeName](result);
                 },
                 transact: function (extra) {
                     extra = extra || {};
                     extra.to = address;
-                    return abi.methodSignature(desc, method.name).then(function (signature) {
-                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;
-                        web3._currentContractAbi = desc;
-                        web3._currentContractAddress = address;
-                        return web3.eth.transact(extra).then(onSuccess);
-                    });
+                    extra.data = signature + parsed;
+
+                    /// it's used by natspec.js
+                    /// TODO: figure a better way to solve this
+                    web3._currentContractAbi = desc;
+                    web3._currentContractAddress = address;
+
+                    var result = web3.eth.transact(extra);
+                    return outputParser[displayName][typeName](result);
                 }
             };
         };
@@ -625,7 +508,7 @@ var contract = function (address, desc) {
 module.exports = contract;
 
 
-},{"./abi":1,"./web3":8}],4:[function(require,module,exports){
+},{"./abi":1,"./web3":6}],3:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -659,13 +542,9 @@ var Filter = function(options, impl) {
     this.impl = impl;
     this.callbacks = [];
 
-    var self = this;
-    this.promise = impl.newFilter(options);
-    this.promise.then(function (id) {
-        self.id = id;
-        web3.on(impl.changed, id, self.trigger.bind(self));
-        web3.provider.startPolling({call: impl.changed, args: [id]}, id);
-    });
+    this.id = impl.newFilter(options);
+    web3.on(impl.changed, this.id, this.trigger.bind(this));
+    web3.provider.startPolling({call: impl.changed, args: [this.id]}, this.id);
 };
 
 /// alias for changed*
@@ -675,10 +554,7 @@ Filter.prototype.arrived = function(callback) {
 
 /// gets called when there is new eth/shh message
 Filter.prototype.changed = function(callback) {
-    var self = this;
-    this.promise.then(function(id) {
-        self.callbacks.push(callback);
-    });
+    this.callbacks.push(callback);
 };
 
 /// trigger calling new message from people
@@ -690,20 +566,14 @@ Filter.prototype.trigger = function(messages) {
 
 /// should be called to uninstall current filter
 Filter.prototype.uninstall = function() {
-    var self = this;
-    this.promise.then(function (id) {
-        self.impl.uninstallFilter(id);
-        web3.provider.stopPolling(id);
-        web3.off(impl.changed, id);
-    });
+    this.impl.uninstallFilter(this.id);
+    web3.provider.stopPolling(this.id);
+    web3.off(impl.changed, this.id);
 };
 
 /// should be called to manually trigger getting latest messages from the client
 Filter.prototype.messages = function() {
-    var self = this;
-    return this.promise.then(function (id) {
-        return self.impl.getMessages(id);
-    });
+    return this.impl.getMessages(this.id);
 };
 
 /// alias for messages
@@ -713,7 +583,7 @@ Filter.prototype.logs = function () {
 
 module.exports = Filter;
 
-},{"./web3":8}],5:[function(require,module,exports){
+},{"./web3":6}],4:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -730,28 +600,16 @@ module.exports = Filter;
     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 httprpc.js
+/** @file httpsync.js
  * @authors:
  *   Marek Kotewicz <marek@ethdev.com>
  *   Marian Oancea <marian@ethdev.com>
  * @date 2014
  */
 
-// TODO: is these line is supposed to be here? 
-if ("build" !== 'build') {/*
-    var XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest; // jshint ignore:line
-*/}
-
-/**
- * HttpRpcProvider object prototype is implementing 'provider protocol'
- * Should be used when we want to connect to ethereum backend over http && jsonrpc
- * It's compatible with cpp client
- * The contructor allows to specify host uri
- * This provider is using in-browser polling mechanism
- */
-var HttpRpcProvider = function (host) {
+var HttpSyncProvider = function (host) {
     this.handlers = [];
-    this.host = host;
+    this.host = host || 'http://localhost:8080';
 };
 
 /// Transforms inner message to proper jsonrpc object
@@ -779,69 +637,21 @@ function formatJsonRpcMessage(message) {
     };
 }
 
-/// Prototype object method 
-/// Asynchronously sends request to server
-/// @param payload is inner message object
-/// @param cb is callback which is being called when response is comes back
-HttpRpcProvider.prototype.sendRequest = function (payload, cb) {
+HttpSyncProvider.prototype.send = function (payload) {
     var data = formatJsonRpcObject(payload);
-
+    
     var request = new XMLHttpRequest();
-    request.open("POST", this.host, true);
+    request.open('POST', this.host, false);
     request.send(JSON.stringify(data));
-    request.onreadystatechange = function () {
-        if (request.readyState === 4 && cb) {
-            cb(request);
-        }
-    };
-};
-
-/// Prototype object method
-/// Should be called when we want to send single api request to server
-/// Asynchronous
-/// On response it passes message to handlers
-/// @param payload is inner message object
-HttpRpcProvider.prototype.send = function (payload) {
-    var self = this;
-    this.sendRequest(payload, function (request) {
-        self.handlers.forEach(function (handler) {
-            handler.call(self, formatJsonRpcMessage(request.responseText));
-        });
-    });
-};
-
-/// Prototype object method
-/// Should be called only for polling requests
-/// Asynchronous
-/// On response it passege message to handlers, but only if message's result is true or not empty array
-/// Otherwise response is being silently ignored
-/// @param payload is inner message object
-/// @id is id of poll that we are calling
-HttpRpcProvider.prototype.poll = function (payload, id) {
-    var self = this;
-    this.sendRequest(payload, function (request) {
-        var parsed = JSON.parse(request.responseText);
-        if (parsed.error || (parsed.result instanceof Array ? parsed.result.length === 0 : !parsed.result)) {
-            return;
-        }
-        self.handlers.forEach(function (handler) {
-            handler.call(self, {_event: payload.call, _id: id, data: parsed.result});
-        });
-    });
+    
+    // check request.status
+    return request.responseText;
 };
 
-/// Prototype object property
-/// Should be used to set message handlers for this provider
-Object.defineProperty(HttpRpcProvider.prototype, "onmessage", {
-    set: function (handler) {
-        this.handlers.push(handler);
-    }
-});
-
-module.exports = HttpRpcProvider;
+module.exports = HttpSyncProvider;
 
 
-},{}],6:[function(require,module,exports){
+},{}],5:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -900,21 +710,20 @@ var ProviderManager = function() {
 };
 
 /// sends outgoing requests, if provider is not available, enqueue the request
-ProviderManager.prototype.send = function(data, cb) {
-    data._id = this.id;
-    if (cb) {
-        web3._callbacks[data._id] = cb;
-    }
+ProviderManager.prototype.send = function(data) {
 
     data.args = data.args || [];
-    this.id++;
+    data._id = 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 undefined;
     }
+
+    //TODO: handle error here? 
+    var result = this.provider.send(data);
+    result = JSON.parse(result);
+    return result.result;
 };
 
 /// setups provider, which will be used for sending messages
@@ -927,14 +736,6 @@ ProviderManager.prototype.set = function(provider) {
     this.ready = true;
 };
 
-/// resends queued messages
-ProviderManager.prototype.sendQueued = function() {
-    for(var i = 0; this.queued.length; i++) {
-        // Resend
-        this.send(this.queued[i]);
-    }
-};
-
 /// @returns true if the provider i properly set
 ProviderManager.prototype.installed = function() {
     return this.provider !== undefined;
@@ -962,66 +763,7 @@ ProviderManager.prototype.stopPolling = function (pollId) {
 module.exports = ProviderManager;
 
 
-},{"./web3":8}],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 qt.js
- * @authors:
- *   Jeffrey Wilcke <jeff@ethdev.com>
- *   Marek Kotewicz <marek@ethdev.com>
- * @date 2014
- */
-
-/**
- * QtProvider object prototype is implementing 'provider protocol'
- * Should be used inside ethereum browser. It's compatible with cpp and go clients.
- * It uses navigator.qt object to pass the messages to native bindings
- */
-var QtProvider = function() {
-    this.handlers = [];
-
-    var self = this;
-    navigator.qt.onmessage = function (message) {
-        self.handlers.forEach(function (handler) {
-            handler.call(self, JSON.parse(message.data));
-        });
-    };
-};
-
-/// Prototype object method
-/// Should be called when we want to send single api request to native bindings
-/// Asynchronous
-/// Response will be received by navigator.qt.onmessage method and passed to handlers
-/// @param payload is inner message object
-QtProvider.prototype.send = function(payload) {
-    navigator.qt.postMessage(JSON.stringify(payload));
-};
-
-/// Prototype object property
-/// Should be used to set message handlers for this provider
-Object.defineProperty(QtProvider.prototype, "onmessage", {
-    set: function(handler) {
-        this.handlers.push(handler);
-    }
-});
-
-module.exports = QtProvider;
-
-},{}],8:[function(require,module,exports){
+},{"./web3":6}],6:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -1047,47 +789,31 @@ module.exports = QtProvider;
  * @date 2014
  */
 
-/// Recursively resolves all promises in given object and replaces the resolved values with promises
-/// @param any object/array/promise/anything else..
-/// @returns (resolves) object with replaced promises with their result 
-function flattenPromise (obj) {
-    if (obj instanceof Promise) {
-        return Promise.resolve(obj);
-    }
-
-    if (obj instanceof Array) {
-        return new Promise(function (resolve) {
-            var promises = obj.map(function (o) {
-                return flattenPromise(o);
-            });
-
-            return Promise.all(promises).then(function (res) {
-                for (var i = 0; i < obj.length; i++) {
-                    obj[i] = res[i];
-                }
-                resolve(obj);
-            });
-        });
-    }
-
-    if (obj instanceof Object) {
-        return new Promise(function (resolve) {
-            var keys = Object.keys(obj);
-            var promises = keys.map(function (key) {
-                return flattenPromise(obj[key]);
-            });
-
-            return Promise.all(promises).then(function (res) {
-                for (var i = 0; i < keys.length; i++) {
-                    obj[keys[i]] = res[i];
-                }
-                resolve(obj);
-            });
-        });
-    }
+if ("build" !== 'build') {/*
+    var BigNumber = require('bignumber.js');
+*/}
 
-    return Promise.resolve(obj);
-}
+var ETH_UNITS = [ 
+    'wei', 
+    'Kwei', 
+    'Mwei', 
+    'Gwei', 
+    'szabo', 
+    'finney', 
+    'ether', 
+    'grand', 
+    'Mether', 
+    'Gether', 
+    'Tether', 
+    'Pether', 
+    'Eether', 
+    'Zether', 
+    'Yether', 
+    'Nether', 
+    'Dether', 
+    'Vether', 
+    'Uether' 
+];
 
 /// @returns an array of objects describing web3 api methods
 var web3Methods = function () {
@@ -1193,21 +919,11 @@ 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;
+            return web3.provider.send({
+                call: call,
+                args: args
             });
         };
     });
@@ -1219,30 +935,16 @@ 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);
-                });
+            return web3.provider.send({
+                call: property.getter
             });
         };
+
         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);
+                return web3.provider.send({
+                    call: property.setter,
+                    args: [val]
                 });
             };
         }
@@ -1250,15 +952,6 @@ var setupProperties = function (obj, properties) {
     });
 };
 
-// TODO: import from a dependency, don't duplicate.
-var hexToDec = function (hex) {
-    return parseInt(hex, 16).toString();
-};
-
-var decToHex = function (dec) {
-    return parseInt(dec).toString(16);
-};
-
 /// setups web3 object, and it's in-browser executed methods
 var web3 = {
     _callbacks: {},
@@ -1305,19 +998,20 @@ var web3 = {
 
     /// @returns decimal representaton of hex value prefixed by 0x
     toDecimal: function (val) {
-        return hexToDec(val.substring(2));
+        return (new BigNumber(val.substring(2), 16).toString(10));
     },
 
     /// @returns hex representation (prefixed by 0x) of decimal value
     fromDecimal: function (val) {
-        return "0x" + decToHex(val);
+        return "0x" + (new BigNumber(val).toString(16));
     },
 
     /// used to transform value/string to eth string
+    /// TODO: use BigNumber.js to parse int
     toEth: function(str) {
         var val = typeof str === "string" ? str.indexOf('0x') === 0 ? parseInt(str.substr(2), 16) : parseInt(str) : str;
         var unit = 0;
-        var units = [ 'wei', 'Kwei', 'Mwei', 'Gwei', 'szabo', 'finney', 'ether', 'grand', 'Mether', 'Gether', 'Tether', 'Pether', 'Eether', 'Zether', 'Yether', 'Nether', 'Dether', 'Vether', 'Uether' ];
+        var units = ETH_UNITS;
         while (val > 3000 && unit < units.length - 1)
         {
             val /= 1000;
@@ -1354,35 +1048,6 @@ var web3 = {
         }
     },
 
-    /// used by filter to register callback with given id
-    on: function(event, id, cb) {
-        if(web3._events[event] === undefined) {
-            web3._events[event] = {};
-        }
-
-        web3._events[event][id] = cb;
-        return this;
-    },
-
-    /// used by filter to unregister callback with given id
-    off: function(event, id) {
-        if(web3._events[event] !== undefined) {
-            delete web3._events[event][id];
-        }
-
-        return this;
-    },
-
-    /// used to trigger callback registered by filter
-    trigger: function(event, id, data) {
-        var callbacks = web3._events[event];
-        if (!callbacks || !callbacks[id]) {
-            return;
-        }
-        var cb = callbacks[id];
-        cb(data);
-    },
-
     /// @returns true if provider is installed
     haveProvider: function() {
         return !!web3.provider.provider;
@@ -1409,145 +1074,26 @@ var shhWatch = {
 setupMethods(shhWatch, shhWatchMethods());
 
 web3.setProvider = function(provider) {
-    provider.onmessage = messageHandler;
+    //provider.onmessage = messageHandler; // there will be no async calls, to remove
     web3.provider.set(provider);
-    web3.provider.sendQueued();
 };
 
-/// callled when there is new incoming message
-function messageHandler(data) {
-    if(data._event !== undefined) {
-        web3.trigger(data._event, data._id, data.data);
-        return;
-    }
-
-    if(data._id) {
-        var cb = web3._callbacks[data._id];
-        if (cb) {
-            cb.call(this, data.error, data.data);
-            delete web3._callbacks[data._id];
-        }
-    }
-}
-
 module.exports = web3;
 
 
-},{}],9:[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 websocket.js
- * @authors:
- *   Jeffrey Wilcke <jeff@ethdev.com>
- *   Marek Kotewicz <marek@ethdev.com>
- *   Marian Oancea <marian@ethdev.com>
- * @date 2014
- */
-
-// TODO: is these line is supposed to be here? 
-if ("build" !== 'build') {/*
-    var WebSocket = require('ws'); // jshint ignore:line
-*/}
-
-/**
- * WebSocketProvider object prototype is implementing 'provider protocol'
- * Should be used when we want to connect to ethereum backend over websockets
- * It's compatible with go client
- * The constructor allows to specify host uri
- */
-var WebSocketProvider = function(host) {
-
-    // onmessage handlers
-    this.handlers = [];
-
-    // queue will be filled with messages if send is invoked before the ws is ready
-    this.queued = [];
-    this.ready = false;
-
-    this.ws = new WebSocket(host);
-
-    var self = this;
-    this.ws.onmessage = function(event) {
-        for(var i = 0; i < self.handlers.length; i++) {
-            self.handlers[i].call(self, JSON.parse(event.data), event);
-        }
-    };
-
-    this.ws.onopen = function() {
-        self.ready = true;
-
-        for (var i = 0; i < self.queued.length; i++) {
-            // Resend
-            self.send(self.queued[i]);
-        }
-    };
-};
-
-/// Prototype object method
-/// Should be called when we want to send single api request to server
-/// Asynchronous, it's using websockets
-/// Response for the call will be received by ws.onmessage
-/// @param payload is inner message object
-WebSocketProvider.prototype.send = function(payload) {
-    if (this.ready) {
-        var data = JSON.stringify(payload);
-
-        this.ws.send(data);
-    } else {
-        this.queued.push(payload);
-    }
-};
-
-/// Prototype object method
-/// Should be called to add handlers
-WebSocketProvider.prototype.onMessage = function(handler) {
-    this.handlers.push(handler);
-};
-
-/// Prototype object method
-/// Should be called to close websockets connection
-WebSocketProvider.prototype.unload = function() {
-    this.ws.close();
-};
-
-/// Prototype object property
-/// Should be used to set message handlers for this provider
-Object.defineProperty(WebSocketProvider.prototype, "onmessage", {
-    set: function(provider) { this.onMessage(provider); }
-});
-
-if (typeof(module) !== "undefined")
-    module.exports = WebSocketProvider;
-
 },{}],"web3":[function(require,module,exports){
 var web3 = require('./lib/web3');
 var ProviderManager = require('./lib/providermanager');
 web3.provider = new ProviderManager();
 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.AutoProvider = require('./lib/autoprovider');
+web3.providers.HttpSyncProvider = require('./lib/httpsync');
 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/contract":2,"./lib/filter":3,"./lib/httpsync":4,"./lib/providermanager":5,"./lib/web3":6}]},{},["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..9f75a5675 100644
--- a/dist/ethereum.js.map
+++ b/dist/ethereum.js.map
@@ -3,31 +3,25 @@
   "sources": [
     "node_modules/browserify/node_modules/browser-pack/_prelude.js",
     "lib/abi.js",
-    "lib/autoprovider.js",
     "lib/contract.js",
     "lib/filter.js",
-    "lib/httprpc.js",
+    "lib/httpsync.js",
     "lib/providermanager.js",
-    "lib/qt.js",
     "lib/web3.js",
-    "lib/websocket.js",
     "index.js"
   ],
   "names": [],
-  "mappings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tZA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AClHA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;ACrGA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;ACtFA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AC9HA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;ACvHA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AA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+  "mappings": 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   "file": "generated.js",
   "sourceRoot": "",
   "sourcesContent": [
     "(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})",
-    "/*\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 abi.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var BigNumber = require('bignumber.js'); // jshint ignore:line\n*/}\n\nvar web3 = require('./web3'); // jshint ignore:line\n\nBigNumber.config({ ROUNDING_MODE: BigNumber.ROUND_DOWN });\n\nvar ETH_PADDING = 32;\n\n/// Finds first index of array element matching pattern\n/// @param array\n/// @param callback pattern\n/// @returns index of element\nvar findIndex = function (array, callback) {\n    var end = false;\n    var i = 0;\n    for (; i < array.length && !end; i++) {\n        end = callback(array[i]);\n    }\n    return end ? i - 1 : -1;\n};\n\n/// @returns a function that is used as a pattern for 'findIndex'\nvar findMethodIndex = function (json, methodName) {\n    return findIndex(json, function (method) {\n        return method.name === methodName;\n    });\n};\n\n/// @param string string to be padded\n/// @param number of characters that result string should have\n/// @param sign, by default 0\n/// @returns right aligned string\nvar padLeft = function (string, chars, sign) {\n    return new Array(chars - string.length + 1).join(sign ? sign : \"0\") + string;\n};\n\n/// @param expected type prefix (string)\n/// @returns function which checks if type has matching prefix. if yes, returns true, otherwise false\nvar prefixedType = function (prefix) {\n    return function (type) {\n        return type.indexOf(prefix) === 0;\n    };\n};\n\n/// @param expected type name (string)\n/// @returns function which checks if type is matching expected one. if yes, returns true, otherwise false\nvar namedType = function (name) {\n    return function (type) {\n        return name === type;\n    };\n};\n\nvar arrayType = function (type) {\n    return type.slice(-2) === '[]';\n};\n\n/// Formats input value to byte representation of int\n/// If value is negative, return it's two's complement\n/// If the value is floating point, round it down\n/// @returns right-aligned byte representation of int\nvar formatInputInt = function (value) {\n    var padding = ETH_PADDING * 2;\n    if (value instanceof BigNumber || typeof value === 'number') {\n        if (typeof value === 'number')\n            value = new BigNumber(value);\n        value = value.round();\n\n        if (value.lessThan(0)) \n            value = new BigNumber(\"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff\", 16).plus(value).plus(1);\n        value = value.toString(16);\n    }\n    else if (value.indexOf('0x') === 0)\n        value = value.substr(2);\n    else if (typeof value === 'string')\n        value = formatInputInt(new BigNumber(value));\n    else\n        value = (+value).toString(16);\n    return padLeft(value, padding);\n};\n\n/// Formats input value to byte representation of string\n/// @returns left-algined byte representation of string\nvar formatInputString = function (value) {\n    return web3.fromAscii(value, ETH_PADDING).substr(2);\n};\n\n/// Formats input value to byte representation of bool\n/// @returns right-aligned byte representation bool\nvar formatInputBool = function (value) {\n    return '000000000000000000000000000000000000000000000000000000000000000' + (value ?  '1' : '0');\n};\n\n/// Formats input value to byte representation of real\n/// Values are multiplied by 2^m and encoded as integers\n/// @returns byte representation of real\nvar formatInputReal = function (value) {\n    return formatInputInt(new BigNumber(value).times(new BigNumber(2).pow(128))); \n};\n\nvar dynamicTypeBytes = function (type, value) {\n    // TODO: decide what to do with array of strings\n    if (arrayType(type) || prefixedType('string')(type))\n        return formatInputInt(value.length); \n    return \"\";\n};\n\n/// Setups input formatters for solidity types\n/// @returns an array of input formatters \nvar setupInputTypes = function () {\n    \n    return [\n        { type: prefixedType('uint'), format: formatInputInt },\n        { type: prefixedType('int'), format: formatInputInt },\n        { type: prefixedType('hash'), format: formatInputInt },\n        { type: prefixedType('string'), format: formatInputString }, \n        { type: prefixedType('real'), format: formatInputReal },\n        { type: prefixedType('ureal'), format: formatInputReal },\n        { type: namedType('address'), format: formatInputInt },\n        { type: namedType('bool'), format: formatInputBool }\n    ];\n};\n\nvar inputTypes = setupInputTypes();\n\n/// Formats input params to bytes\n/// @param contract json abi\n/// @param name of the method that we want to use\n/// @param array of params that will be formatted to bytes\n/// @returns bytes representation of input params\nvar toAbiInput = function (json, methodName, params) {\n    var bytes = \"\";\n    var index = findMethodIndex(json, methodName);\n\n    if (index === -1) {\n        return;\n    }\n\n    var method = json[index];\n    var padding = ETH_PADDING * 2;\n\n    /// first we iterate in search for dynamic \n    method.inputs.forEach(function (input, index) {\n        bytes += dynamicTypeBytes(input.type, params[index]);\n    });\n\n    method.inputs.forEach(function (input, i) {\n        var typeMatch = false;\n        for (var j = 0; j < inputTypes.length && !typeMatch; j++) {\n            typeMatch = inputTypes[j].type(method.inputs[i].type, params[i]);\n        }\n        if (!typeMatch) {\n            console.error('input parser does not support type: ' + method.inputs[i].type);\n        }\n\n        var formatter = inputTypes[j - 1].format;\n        var toAppend = \"\";\n\n        if (arrayType(method.inputs[i].type))\n            toAppend = params[i].reduce(function (acc, curr) {\n                return acc + formatter(curr);\n            }, \"\");\n        else\n            toAppend = formatter(params[i]);\n\n        bytes += toAppend; \n    });\n    return bytes;\n};\n\n/// Check if input value is negative\n/// @param value is hex format\n/// @returns true if it is negative, otherwise false\nvar signedIsNegative = function (value) {\n    return (new BigNumber(value.substr(0, 1), 16).toString(2).substr(0, 1)) === '1';\n};\n\n/// Formats input right-aligned input bytes to int\n/// @returns right-aligned input bytes formatted to int\nvar formatOutputInt = function (value) {\n    // check if it's negative number\n    // it it is, return two's complement\n    if (signedIsNegative(value)) {\n        return new BigNumber(value, 16).minus(new BigNumber('ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff', 16)).minus(1);\n    }\n    return new BigNumber(value, 16);\n};\n\n/// Formats big right-aligned input bytes to uint\n/// @returns right-aligned input bytes formatted to uint\nvar formatOutputUInt = function (value) {\n    return new BigNumber(value, 16);\n};\n\n/// @returns input bytes formatted to real\nvar formatOutputReal = function (value) {\n    return formatOutputInt(value).dividedBy(new BigNumber(2).pow(128)); \n};\n\n/// @returns input bytes formatted to ureal\nvar formatOutputUReal = function (value) {\n    return formatOutputUInt(value).dividedBy(new BigNumber(2).pow(128)); \n};\n\n/// @returns right-aligned input bytes formatted to hex\nvar formatOutputHash = function (value) {\n    return \"0x\" + value;\n};\n\n/// @returns right-aligned input bytes formatted to bool\nvar formatOutputBool = function (value) {\n    return value === '0000000000000000000000000000000000000000000000000000000000000001' ? true : false;\n};\n\n/// @returns left-aligned input bytes formatted to ascii string\nvar formatOutputString = function (value) {\n    return web3.toAscii(value);\n};\n\n/// @returns right-aligned input bytes formatted to address\nvar formatOutputAddress = function (value) {\n    return \"0x\" + value.slice(value.length - 40, value.length);\n};\n\nvar dynamicBytesLength = function (type) {\n    if (arrayType(type) || prefixedType('string')(type))\n        return ETH_PADDING * 2;\n    return 0;\n};\n\n/// Setups output formaters for solidity types\n/// @returns an array of output formatters\nvar setupOutputTypes = function () {\n\n    return [\n        { type: prefixedType('uint'), format: formatOutputUInt },\n        { type: prefixedType('int'), format: formatOutputInt },\n        { type: prefixedType('hash'), format: formatOutputHash },\n        { type: prefixedType('string'), format: formatOutputString },\n        { type: prefixedType('real'), format: formatOutputReal },\n        { type: prefixedType('ureal'), format: formatOutputUReal },\n        { type: namedType('address'), format: formatOutputAddress },\n        { type: namedType('bool'), format: formatOutputBool }\n    ];\n};\n\nvar outputTypes = setupOutputTypes();\n\n/// Formats output bytes back to param list\n/// @param contract json abi\n/// @param name of the method that we want to use\n/// @param bytes representtion of output \n/// @returns array of output params \nvar fromAbiOutput = function (json, methodName, output) {\n    var index = findMethodIndex(json, methodName);\n\n    if (index === -1) {\n        return;\n    }\n\n    output = output.slice(2);\n\n    var result = [];\n    var method = json[index];\n    var padding = ETH_PADDING * 2;\n\n    var dynamicPartLength = method.outputs.reduce(function (acc, curr) {\n        return acc + dynamicBytesLength(curr.type);\n    }, 0);\n    \n    var dynamicPart = output.slice(0, dynamicPartLength);\n    output = output.slice(dynamicPartLength);\n\n    method.outputs.forEach(function (out, i) {\n        var typeMatch = false;\n        for (var j = 0; j < outputTypes.length && !typeMatch; j++) {\n            typeMatch = outputTypes[j].type(method.outputs[i].type);\n        }\n\n        if (!typeMatch) {\n            console.error('output parser does not support type: ' + method.outputs[i].type);\n        }\n\n        var formatter = outputTypes[j - 1].format;\n        if (arrayType(method.outputs[i].type)) {\n            var size = formatOutputUInt(dynamicPart.slice(0, padding));\n            dynamicPart = dynamicPart.slice(padding);\n            var array = [];\n            for (var k = 0; k < size; k++) {\n                array.push(formatter(output.slice(0, padding))); \n                output = output.slice(padding);\n            }\n            result.push(array);\n        }\n        else if (prefixedType('string')(method.outputs[i].type)) {\n            dynamicPart = dynamicPart.slice(padding); \n            result.push(formatter(output.slice(0, padding)));\n            output = output.slice(padding);\n        } else {\n            result.push(formatter(output.slice(0, padding)));\n            output = output.slice(padding);\n        }\n    });\n\n    return result;\n};\n\n/// @returns display name for method eg. multiply(uint256) -> multiply\nvar methodDisplayName = function (method) {\n    var length = method.indexOf('('); \n    return length !== -1 ? method.substr(0, length) : method;\n};\n\n/// @returns overloaded part of method's name\nvar methodTypeName = function (method) {\n    /// TODO: make it not vulnerable\n    var length = method.indexOf('(');\n    return length !== -1 ? method.substr(length + 1, method.length - 1 - (length + 1)) : \"\";\n};\n\n/// @param json abi for contract\n/// @returns input parser object for given json abi\nvar inputParser = function (json) {\n    var parser = {};\n    json.forEach(function (method) {\n        var displayName = methodDisplayName(method.name); \n        var typeName = methodTypeName(method.name);\n\n        var impl = function () {\n            var params = Array.prototype.slice.call(arguments);\n            return toAbiInput(json, method.name, params);\n        };\n       \n        if (parser[displayName] === undefined) {\n            parser[displayName] = impl;\n        }\n\n        parser[displayName][typeName] = impl;\n    });\n\n    return parser;\n};\n\n/// @param json abi for contract\n/// @returns output parser for given json abi\nvar outputParser = function (json) {\n    var parser = {};\n    json.forEach(function (method) {\n\n        var displayName = methodDisplayName(method.name); \n        var typeName = methodTypeName(method.name);\n\n        var impl = function (output) {\n            return fromAbiOutput(json, method.name, output);\n        };\n\n        if (parser[displayName] === undefined) {\n            parser[displayName] = impl;\n        }\n\n        parser[displayName][typeName] = impl;\n    });\n\n    return parser;\n};\n\n/// @param json abi for contract\n/// @param method name for which we want to get method signature\n/// @returns (promise) contract method signature for method with given name\nvar methodSignature = function (json, name) {\n    return web3.sha3(web3.fromAscii(name));\n};\n\nmodule.exports = {\n    inputParser: inputParser,\n    outputParser: outputParser,\n    methodSignature: methodSignature,\n    methodDisplayName: methodDisplayName,\n    methodTypeName: methodTypeName\n};\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 autoprovider.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n * @date 2014\n */\n\n/*\n * @brief if qt object is available, uses QtProvider,\n * if not tries to connect over websockets\n * if it fails, it uses HttpRpcProvider\n */\n\nvar web3 = require('./web3'); // jshint ignore:line\nif (\"build\" !== 'build') {/*\n    var WebSocket = require('ws'); // jshint ignore:line\n*/}\n\n/**\n * AutoProvider object prototype is implementing 'provider protocol'\n * Automatically tries to setup correct provider(Qt, WebSockets or HttpRpc)\n * First it checkes if we are ethereum browser (if navigator.qt object is available)\n * if yes, we are using QtProvider\n * if no, we check if it is possible to establish websockets connection with ethereum (ws://localhost:40404/eth is default)\n * if it's not possible, we are using httprpc provider (http://localhost:8080)\n * The constructor allows you to specify uris on which we are trying to connect over http or websockets\n * You can do that by passing objects with fields httrpc and websockets\n */\nvar AutoProvider = function (userOptions) {\n    if (web3.haveProvider()) {\n        return;\n    }\n\n    // before we determine what provider we are, we have to cache request\n    this.sendQueue = [];\n    this.onmessageQueue = [];\n\n    if (navigator.qt) {\n        this.provider = new web3.providers.QtProvider();\n        return;\n    }\n\n    userOptions = userOptions || {};\n    var options = {\n        httprpc: userOptions.httprpc || 'http://localhost:8080',\n        websockets: userOptions.websockets || 'ws://localhost:40404/eth'\n    };\n\n    var self = this;\n    var closeWithSuccess = function (success) {\n        ws.close();\n        if (success) {\n            self.provider = new web3.providers.WebSocketProvider(options.websockets);\n        } else {\n            self.provider = new web3.providers.HttpRpcProvider(options.httprpc);\n            self.poll = self.provider.poll.bind(self.provider);\n        }\n        self.sendQueue.forEach(function (payload) {\n            self.provider.send(payload);\n        });\n        self.onmessageQueue.forEach(function (handler) {\n            self.provider.onmessage = handler;\n        });\n    };\n\n    var ws = new WebSocket(options.websockets);\n\n    ws.onopen = function() {\n        closeWithSuccess(true);\n    };\n\n    ws.onerror = function() {\n        closeWithSuccess(false);\n    };\n};\n\n/// Sends message forward to the provider, that is being used\n/// if provider is not yet set, enqueues the message\nAutoProvider.prototype.send = function (payload) {\n    if (this.provider) {\n        this.provider.send(payload);\n        return;\n    }\n    this.sendQueue.push(payload);\n};\n\n/// On incoming message sends the message to the provider that is currently being used\nObject.defineProperty(AutoProvider.prototype, 'onmessage', {\n    set: function (handler) {\n        if (this.provider) {\n            this.provider.onmessage = handler;\n            return;\n        }\n        this.onmessageQueue.push(handler);\n    }\n});\n\nmodule.exports = AutoProvider;\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 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 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 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"
+    "/*\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 abi.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var BigNumber = require('bignumber.js'); // jshint ignore:line\n*/}\n\nvar web3 = require('./web3'); // jshint ignore:line\n\nBigNumber.config({ ROUNDING_MODE: BigNumber.ROUND_DOWN });\n\nvar ETH_PADDING = 32;\n\n/// method signature length in bytes\nvar ETH_METHOD_SIGNATURE_LENGTH = 4;\n\n/// Finds first index of array element matching pattern\n/// @param array\n/// @param callback pattern\n/// @returns index of element\nvar findIndex = function (array, callback) {\n    var end = false;\n    var i = 0;\n    for (; i < array.length && !end; i++) {\n        end = callback(array[i]);\n    }\n    return end ? i - 1 : -1;\n};\n\n/// @returns a function that is used as a pattern for 'findIndex'\nvar findMethodIndex = function (json, methodName) {\n    return findIndex(json, function (method) {\n        return method.name === methodName;\n    });\n};\n\n/// @param string string to be padded\n/// @param number of characters that result string should have\n/// @param sign, by default 0\n/// @returns right aligned string\nvar padLeft = function (string, chars, sign) {\n    return new Array(chars - string.length + 1).join(sign ? sign : \"0\") + string;\n};\n\n/// @param expected type prefix (string)\n/// @returns function which checks if type has matching prefix. if yes, returns true, otherwise false\nvar prefixedType = function (prefix) {\n    return function (type) {\n        return type.indexOf(prefix) === 0;\n    };\n};\n\n/// @param expected type name (string)\n/// @returns function which checks if type is matching expected one. if yes, returns true, otherwise false\nvar namedType = function (name) {\n    return function (type) {\n        return name === type;\n    };\n};\n\nvar arrayType = function (type) {\n    return type.slice(-2) === '[]';\n};\n\n/// Formats input value to byte representation of int\n/// If value is negative, return it's two's complement\n/// If the value is floating point, round it down\n/// @returns right-aligned byte representation of int\nvar formatInputInt = function (value) {\n    var padding = ETH_PADDING * 2;\n    if (value instanceof BigNumber || typeof value === 'number') {\n        if (typeof value === 'number')\n            value = new BigNumber(value);\n        value = value.round();\n\n        if (value.lessThan(0)) \n            value = new BigNumber(\"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff\", 16).plus(value).plus(1);\n        value = value.toString(16);\n    }\n    else if (value.indexOf('0x') === 0)\n        value = value.substr(2);\n    else if (typeof value === 'string')\n        value = formatInputInt(new BigNumber(value));\n    else\n        value = (+value).toString(16);\n    return padLeft(value, padding);\n};\n\n/// Formats input value to byte representation of string\n/// @returns left-algined byte representation of string\nvar formatInputString = function (value) {\n    return web3.fromAscii(value, ETH_PADDING).substr(2);\n};\n\n/// Formats input value to byte representation of bool\n/// @returns right-aligned byte representation bool\nvar formatInputBool = function (value) {\n    return '000000000000000000000000000000000000000000000000000000000000000' + (value ?  '1' : '0');\n};\n\n/// Formats input value to byte representation of real\n/// Values are multiplied by 2^m and encoded as integers\n/// @returns byte representation of real\nvar formatInputReal = function (value) {\n    return formatInputInt(new BigNumber(value).times(new BigNumber(2).pow(128))); \n};\n\nvar dynamicTypeBytes = function (type, value) {\n    // TODO: decide what to do with array of strings\n    if (arrayType(type) || prefixedType('string')(type))\n        return formatInputInt(value.length); \n    return \"\";\n};\n\n/// Setups input formatters for solidity types\n/// @returns an array of input formatters \nvar setupInputTypes = function () {\n    \n    return [\n        { type: prefixedType('uint'), format: formatInputInt },\n        { type: prefixedType('int'), format: formatInputInt },\n        { type: prefixedType('hash'), format: formatInputInt },\n        { type: prefixedType('string'), format: formatInputString }, \n        { type: prefixedType('real'), format: formatInputReal },\n        { type: prefixedType('ureal'), format: formatInputReal },\n        { type: namedType('address'), format: formatInputInt },\n        { type: namedType('bool'), format: formatInputBool }\n    ];\n};\n\nvar inputTypes = setupInputTypes();\n\n/// Formats input params to bytes\n/// @param contract json abi\n/// @param name of the method that we want to use\n/// @param array of params that will be formatted to bytes\n/// @returns bytes representation of input params\nvar toAbiInput = function (json, methodName, params) {\n    var bytes = \"\";\n    var index = findMethodIndex(json, methodName);\n\n    if (index === -1) {\n        return;\n    }\n\n    var method = json[index];\n    var padding = ETH_PADDING * 2;\n\n    /// first we iterate in search for dynamic \n    method.inputs.forEach(function (input, index) {\n        bytes += dynamicTypeBytes(input.type, params[index]);\n    });\n\n    method.inputs.forEach(function (input, i) {\n        var typeMatch = false;\n        for (var j = 0; j < inputTypes.length && !typeMatch; j++) {\n            typeMatch = inputTypes[j].type(method.inputs[i].type, params[i]);\n        }\n        if (!typeMatch) {\n            console.error('input parser does not support type: ' + method.inputs[i].type);\n        }\n\n        var formatter = inputTypes[j - 1].format;\n        var toAppend = \"\";\n\n        if (arrayType(method.inputs[i].type))\n            toAppend = params[i].reduce(function (acc, curr) {\n                return acc + formatter(curr);\n            }, \"\");\n        else\n            toAppend = formatter(params[i]);\n\n        bytes += toAppend; \n    });\n    return bytes;\n};\n\n/// Check if input value is negative\n/// @param value is hex format\n/// @returns true if it is negative, otherwise false\nvar signedIsNegative = function (value) {\n    return (new BigNumber(value.substr(0, 1), 16).toString(2).substr(0, 1)) === '1';\n};\n\n/// Formats input right-aligned input bytes to int\n/// @returns right-aligned input bytes formatted to int\nvar formatOutputInt = function (value) {\n    // check if it's negative number\n    // it it is, return two's complement\n    if (signedIsNegative(value)) {\n        return new BigNumber(value, 16).minus(new BigNumber('ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff', 16)).minus(1);\n    }\n    return new BigNumber(value, 16);\n};\n\n/// Formats big right-aligned input bytes to uint\n/// @returns right-aligned input bytes formatted to uint\nvar formatOutputUInt = function (value) {\n    return new BigNumber(value, 16);\n};\n\n/// @returns input bytes formatted to real\nvar formatOutputReal = function (value) {\n    return formatOutputInt(value).dividedBy(new BigNumber(2).pow(128)); \n};\n\n/// @returns input bytes formatted to ureal\nvar formatOutputUReal = function (value) {\n    return formatOutputUInt(value).dividedBy(new BigNumber(2).pow(128)); \n};\n\n/// @returns right-aligned input bytes formatted to hex\nvar formatOutputHash = function (value) {\n    return \"0x\" + value;\n};\n\n/// @returns right-aligned input bytes formatted to bool\nvar formatOutputBool = function (value) {\n    return value === '0000000000000000000000000000000000000000000000000000000000000001' ? true : false;\n};\n\n/// @returns left-aligned input bytes formatted to ascii string\nvar formatOutputString = function (value) {\n    return web3.toAscii(value);\n};\n\n/// @returns right-aligned input bytes formatted to address\nvar formatOutputAddress = function (value) {\n    return \"0x\" + value.slice(value.length - 40, value.length);\n};\n\nvar dynamicBytesLength = function (type) {\n    if (arrayType(type) || prefixedType('string')(type))\n        return ETH_PADDING * 2;\n    return 0;\n};\n\n/// Setups output formaters for solidity types\n/// @returns an array of output formatters\nvar setupOutputTypes = function () {\n\n    return [\n        { type: prefixedType('uint'), format: formatOutputUInt },\n        { type: prefixedType('int'), format: formatOutputInt },\n        { type: prefixedType('hash'), format: formatOutputHash },\n        { type: prefixedType('string'), format: formatOutputString },\n        { type: prefixedType('real'), format: formatOutputReal },\n        { type: prefixedType('ureal'), format: formatOutputUReal },\n        { type: namedType('address'), format: formatOutputAddress },\n        { type: namedType('bool'), format: formatOutputBool }\n    ];\n};\n\nvar outputTypes = setupOutputTypes();\n\n/// Formats output bytes back to param list\n/// @param contract json abi\n/// @param name of the method that we want to use\n/// @param bytes representtion of output \n/// @returns array of output params \nvar fromAbiOutput = function (json, methodName, output) {\n    var index = findMethodIndex(json, methodName);\n\n    if (index === -1) {\n        return;\n    }\n\n    output = output.slice(2);\n\n    var result = [];\n    var method = json[index];\n    var padding = ETH_PADDING * 2;\n\n    var dynamicPartLength = method.outputs.reduce(function (acc, curr) {\n        return acc + dynamicBytesLength(curr.type);\n    }, 0);\n    \n    var dynamicPart = output.slice(0, dynamicPartLength);\n    output = output.slice(dynamicPartLength);\n\n    method.outputs.forEach(function (out, i) {\n        var typeMatch = false;\n        for (var j = 0; j < outputTypes.length && !typeMatch; j++) {\n            typeMatch = outputTypes[j].type(method.outputs[i].type);\n        }\n\n        if (!typeMatch) {\n            console.error('output parser does not support type: ' + method.outputs[i].type);\n        }\n\n        var formatter = outputTypes[j - 1].format;\n        if (arrayType(method.outputs[i].type)) {\n            var size = formatOutputUInt(dynamicPart.slice(0, padding));\n            dynamicPart = dynamicPart.slice(padding);\n            var array = [];\n            for (var k = 0; k < size; k++) {\n                array.push(formatter(output.slice(0, padding))); \n                output = output.slice(padding);\n            }\n            result.push(array);\n        }\n        else if (prefixedType('string')(method.outputs[i].type)) {\n            dynamicPart = dynamicPart.slice(padding); \n            result.push(formatter(output.slice(0, padding)));\n            output = output.slice(padding);\n        } else {\n            result.push(formatter(output.slice(0, padding)));\n            output = output.slice(padding);\n        }\n    });\n\n    return result;\n};\n\n/// @returns display name for method eg. multiply(uint256) -> multiply\nvar methodDisplayName = function (method) {\n    var length = method.indexOf('('); \n    return length !== -1 ? method.substr(0, length) : method;\n};\n\n/// @returns overloaded part of method's name\nvar methodTypeName = function (method) {\n    /// TODO: make it not vulnerable\n    var length = method.indexOf('(');\n    return length !== -1 ? method.substr(length + 1, method.length - 1 - (length + 1)) : \"\";\n};\n\n/// @param json abi for contract\n/// @returns input parser object for given json abi\nvar inputParser = function (json) {\n    var parser = {};\n    json.forEach(function (method) {\n        var displayName = methodDisplayName(method.name); \n        var typeName = methodTypeName(method.name);\n\n        var impl = function () {\n            var params = Array.prototype.slice.call(arguments);\n            return toAbiInput(json, method.name, params);\n        };\n       \n        if (parser[displayName] === undefined) {\n            parser[displayName] = impl;\n        }\n\n        parser[displayName][typeName] = impl;\n    });\n\n    return parser;\n};\n\n/// @param json abi for contract\n/// @returns output parser for given json abi\nvar outputParser = function (json) {\n    var parser = {};\n    json.forEach(function (method) {\n\n        var displayName = methodDisplayName(method.name); \n        var typeName = methodTypeName(method.name);\n\n        var impl = function (output) {\n            return fromAbiOutput(json, method.name, output);\n        };\n\n        if (parser[displayName] === undefined) {\n            parser[displayName] = impl;\n        }\n\n        parser[displayName][typeName] = impl;\n    });\n\n    return parser;\n};\n\n/// @param method name for which we want to get method signature\n/// @returns (promise) contract method signature for method with given name\nvar methodSignature = function (name) {\n    return web3.sha3(web3.fromAscii(name)).slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2);\n};\n\nmodule.exports = {\n    inputParser: inputParser,\n    outputParser: outputParser,\n    methodSignature: methodSignature,\n    methodDisplayName: methodDisplayName,\n    methodTypeName: methodTypeName\n};\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 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/**\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            var signature = abi.methodSignature(method.name);\n\n            return {\n                call: function (extra) {\n                    extra = extra || {};\n                    extra.to = address;\n                    extra.data = signature + parsed;\n\n                    var result = web3.eth.call(extra);\n                    return outputParser[displayName][typeName](result);\n                },\n                transact: function (extra) {\n                    extra = extra || {};\n                    extra.to = address;\n                    extra.data = signature + parsed;\n\n                    /// it's used by natspec.js\n                    /// TODO: figure a better way to solve this\n                    web3._currentContractAbi = desc;\n                    web3._currentContractAddress = address;\n\n                    var result = web3.eth.transact(extra);\n                    return outputParser[displayName][typeName](result);\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    this.id = impl.newFilter(options);\n    web3.on(impl.changed, this.id, this.trigger.bind(this));\n    web3.provider.startPolling({call: impl.changed, args: [this.id]}, this.id);\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    this.callbacks.push(callback);\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    this.impl.uninstallFilter(this.id);\n    web3.provider.stopPolling(this.id);\n    web3.off(impl.changed, this.id);\n};\n\n/// should be called to manually trigger getting latest messages from the client\nFilter.prototype.messages = function() {\n    return this.impl.getMessages(this.id);\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 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 || 'http://localhost:8080';\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\n    data.args = data.args || [];\n    data._id = this.id++;\n\n    if (this.provider === undefined) {\n        console.error('provider is not set');\n        return undefined;\n    }\n\n    //TODO: handle error here? \n    var result = this.provider.send(data);\n    result = JSON.parse(result);\n    return result.result;\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/// @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 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\nif (\"build\" !== 'build') {/*\n    var BigNumber = require('bignumber.js');\n*/}\n\nvar ETH_UNITS = [ \n    'wei', \n    'Kwei', \n    'Mwei', \n    'Gwei', \n    'szabo', \n    'finney', \n    'ether', \n    'grand', \n    'Mether', \n    'Gether', \n    'Tether', \n    'Pether', \n    'Eether', \n    'Zether', \n    'Yether', \n    'Nether', \n    'Dether', \n    'Vether', \n    'Uether' \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            return web3.provider.send({\n                call: call,\n                args: args\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 web3.provider.send({\n                call: property.getter\n            });\n        };\n\n        if (property.setter) {\n            proto.set = function (val) {\n                return web3.provider.send({\n                    call: property.setter,\n                    args: [val]\n                });\n            };\n        }\n        Object.defineProperty(obj, property.name, proto);\n    });\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 (new BigNumber(val.substring(2), 16).toString(10));\n    },\n\n    /// @returns hex representation (prefixed by 0x) of decimal value\n    fromDecimal: function (val) {\n        return \"0x\" + (new BigNumber(val).toString(16));\n    },\n\n    /// used to transform value/string to eth string\n    /// TODO: use BigNumber.js to parse int\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 = ETH_UNITS;\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    /// @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; // there will be no async calls, to remove\n    web3.provider.set(provider);\n};\n\nmodule.exports = web3;\n\n",
+    "var web3 = require('./lib/web3');\nvar ProviderManager = require('./lib/providermanager');\nweb3.provider = new ProviderManager();\nweb3.filter = require('./lib/filter');\nweb3.providers.HttpSyncProvider = require('./lib/httpsync');\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..e95262bf0 100644
--- a/dist/ethereum.min.js
+++ b/dist/ethereum.min.js
@@ -1 +1 @@
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i=!1,a=0;a<v.length&&!i;a++)i=v[a].type(o.inputs[e].type,r[e]);i||console.error("input parser does not support type: "+o.inputs[e].type);var f=v[a-1].format,u="";u=c(o.inputs[e].type)?r[e].reduce(function(t,e){return t+f(e)},""):f(r[e]),n+=u}),n}},y=function(t){return"1"===new BigNumber(t.substr(0,1),16).toString(2).substr(0,1)},_=function(t){return y(t)?new BigNumber(t,16).minus(new BigNumber("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",16)).minus(1):new BigNumber(t,16)},w=function(t){return new BigNumber(t,16)},N=function(t){return _(t).dividedBy(new BigNumber(2).pow(128))},x=function(t){return w(t).dividedBy(new BigNumber(2).pow(128))},B=function(t){return"0x"+t},A=function(t){return"0000000000000000000000000000000000000000000000000000000000000001"===t?!0:!1},S=function(t){return r.toAscii(t)},O=function(t){return"0x"+t.slice(t.length-40,t.length)},P=function(t){return c(t)||u("string")(t)?2*n:0},E=function(){return[{type:u("uint"),format:w},{type:u("int"),format:_},{type:u("hash"),format:B},{type:u("string"),format:S},{type:u("real"),format:N},{type:u("ureal"),format:x},{type:s("address"),format:O},{type:s("bool"),format:A}]},F=E(),k=function(t,e,r){var i=a(t,e);if(-1!==i){r=r.slice(2);var o=[],f=t[i],s=2*n,l=f.outputs.reduce(function(t,e){return t+P(e.type)},0),h=r.slice(0,l);return r=r.slice(l),f.outputs.forEach(function(t,e){for(var n=!1,i=0;i<F.length&&!n;i++)n=F[i].type(f.outputs[e].type);n||console.error("output parser does not support type: "+f.outputs[e].type);var a=F[i-1].format;if(c(f.outputs[e].type)){var l=w(h.slice(0,s));h=h.slice(s);for(var p=[],d=0;l>d;d++)p.push(a(r.slice(0,s))),r=r.slice(s);o.push(p)}else u("string")(f.outputs[e].type)?(h=h.slice(s),o.push(a(r.slice(0,s))),r=r.slice(s)):(o.push(a(r.slice(0,s))),r=r.slice(s))}),o}},D=function(t){var e=t.indexOf("(");return-1!==e?t.substr(0,e):t},M=function(t){var e=t.indexOf("(");return-1!==e?t.substr(e+1,t.length-1-(e+1)):""},T=function(t){var e={};return t.forEach(function(r){var n=D(r.name),i=M(r.name),o=function(){var e=Array.prototype.slice.call(arguments);return b(t,r.name,e)};void 0===e[n]&&(e[n]=o),e[n][i]=o}),e},C=function(t){var e={};return t.forEach(function(r){var n=D(r.name),i=M(r.name),o=function(e){return k(t,r.name,e)};void 0===e[n]&&(e[n]=o),e[n][i]=o}),e},I=function(t){return r.sha3(r.fromAscii(t)).slice(0,2+2*i)};e.exports={inputParser:T,outputParser:C,methodSignature:I,methodDisplayName:D,methodTypeName:M}},{"./web3":6}],2:[function(t,e){var r=t("./web3"),n=t("./abi"),i=function(t,e){var i=n.inputParser(e),o=n.outputParser(e),a={};return e.forEach(function(f){var u=n.methodDisplayName(f.name),s=n.methodTypeName(f.name),c=function(){var a=Array.prototype.slice.call(arguments),c=i[u][s].apply(null,a),l=n.methodSignature(f.name);return{call:function(e){e=e||{},e.to=t,e.data=l+c;var n=r.eth.call(e);return o[u][s](n)},transact:function(n){n=n||{},n.to=t,n.data=l+c,r._currentContractAbi=e,r._currentContractAddress=t;var i=r.eth.transact(n);return o[u][s](i)}}};void 0===a[u]&&(a[u]=c),a[u][s]=c}),a};e.exports=i},{"./abi":1,"./web3":6}],3:[function(t,e){var r=t("./web3"),n=function(t,e){this.impl=e,this.callbacks=[],this.id=e.newFilter(t),r.on(e.changed,this.id,this.trigger.bind(this)),r.provider.startPolling({call:e.changed,args:[this.id]},this.id)};n.prototype.arrived=function(t){this.changed(t)},n.prototype.changed=function(t){this.callbacks.push(t)},n.prototype.trigger=function(t){for(var e=0;e<this.callbacks.length;e++)this.callbacks[e].call(this,t)},n.prototype.uninstall=function(){this.impl.uninstallFilter(this.id),r.provider.stopPolling(this.id),r.off(impl.changed,this.id)},n.prototype.messages=function(){return this.impl.getMessages(this.id)},n.prototype.logs=function(){return this.messages()},e.exports=n},{"./web3":6}],4:[function(t,e){function r(t){return{jsonrpc:"2.0",method:t.call,params:t.args,id:t._id}}var n=function(t){this.handlers=[],this.host=t||"http://localhost:8080"};n.prototype.send=function(t){var e=r(t),n=new XMLHttpRequest;return n.open("POST",this.host,!1),n.send(JSON.stringify(e)),n.responseText},e.exports=n},{}],5:[function(t,e){var r=(t("./web3"),function(){this.queued=[],this.polls=[],this.ready=!1,this.provider=void 0,this.id=1;var t=this,e=function(){t.provider&&t.provider.poll&&t.polls.forEach(function(e){e.data._id=t.id,t.id++,t.provider.poll(e.data,e.id)}),setTimeout(e,12e3)};e()});r.prototype.send=function(t){if(t.args=t.args||[],t._id=this.id++,void 0===this.provider)return void console.error("provider is not set");var e=this.provider.send(t);return e=JSON.parse(e),e.result},r.prototype.set=function(t){void 0!==this.provider&&void 0!==this.provider.unload&&this.provider.unload(),this.provider=t,this.ready=!0},r.prototype.installed=function(){return void 0!==this.provider},r.prototype.startPolling=function(t,e){this.provider&&this.provider.poll&&this.polls.push({data:t,id:e})},r.prototype.stopPolling=function(t){for(var e=this.polls.length;e--;){var r=this.polls[e];r.id===t&&this.polls.splice(e,1)}},e.exports=r},{"./web3":6}],6:[function(t,e){var r=["wei","Kwei","Mwei","Gwei","szabo","finney","ether","grand","Mether","Gether","Tether","Pether","Eether","Zether","Yether","Nether","Dether","Vether","Uether"],n=function(){return[{name:"sha3",call:"web3_sha3"}]},i=function(){var t=function(t){return"string"==typeof t[0]?"eth_blockByHash":"eth_blockByNumber"},e=function(t){return"string"==typeof t[0]?"eth_transactionByHash":"eth_transactionByNumber"},r=function(t){return"string"==typeof t[0]?"eth_uncleByHash":"eth_uncleByNumber"},n=[{name:"balanceAt",call:"eth_balanceAt"},{name:"stateAt",call:"eth_stateAt"},{name:"storageAt",call:"eth_storageAt"},{name:"countAt",call:"eth_countAt"},{name:"codeAt",call:"eth_codeAt"},{name:"transact",call:"eth_transact"},{name:"call",call:"eth_call"},{name:"block",call:t},{name:"transaction",call:e},{name:"uncle",call:r},{name:"compilers",call:"eth_compilers"},{name:"lll",call:"eth_lll"},{name:"solidity",call:"eth_solidity"},{name:"serpent",call:"eth_serpent"},{name:"logs",call:"eth_logs"}];return 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"}]},a=function(){return[{name:"put",call:"db_put"},{name:"get",call:"db_get"},{name:"putString",call:"db_putString"},{name:"getString",call:"db_getString"}]},f=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 t=function(t){return"string"==typeof t[0]?"eth_newFilterString":"eth_newFilter"};return[{name:"newFilter",call:t},{name:"uninstallFilter",call:"eth_uninstallFilter"},{name:"getMessages",call:"eth_filterLogs"}]},s=function(){return[{name:"newFilter",call:"shh_newFilter"},{name:"uninstallFilter",call:"shh_uninstallFilter"},{name:"getMessage",call:"shh_getMessages"}]},c=function(t,e){e.forEach(function(e){t[e.name]=function(){var t=Array.prototype.slice.call(arguments),r="function"==typeof e.call?e.call(t):e.call;return h.provider.send({call:r,args:t})}})},l=function(t,e){e.forEach(function(e){var r={};r.get=function(){return h.provider.send({call:e.getter})},e.setter&&(r.set=function(t){return h.provider.send({call:e.setter,args:[t]})}),Object.defineProperty(t,e.name,r)})},h={_callbacks:{},_events:{},providers:{},toHex:function(t){for(var e="",r=0;r<t.length;r++){var n=t.charCodeAt(r).toString(16);e+=n.length<2?"0"+n:n}return e},toAscii:function(t){var e="",r=0,n=t.length;for("0x"===t.substring(0,2)&&(r=2);n>r;r+=2){var i=parseInt(t.substr(r,2),16);if(0===i)break;e+=String.fromCharCode(i)}return e},fromAscii:function(t,e){e=void 0===e?0:e;for(var r=this.toHex(t);r.length<2*e;)r+="00";return"0x"+r},toDecimal:function(t){return new BigNumber(t.substring(2),16).toString(10)},fromDecimal:function(t){return"0x"+new BigNumber(t).toString(16)},toEth:function(t){for(var e="string"==typeof t?0===t.indexOf("0x")?parseInt(t.substr(2),16):parseInt(t):t,n=0,i=r;e>3e3&&n<i.length-1;)e/=1e3,n++;for(var o=e.toString().length<e.toFixed(2).length?e.toString():e.toFixed(2),a=function(t,e,r){return e+","+r};;){var f=o;if(o=o.replace(/(\d)(\d\d\d[\.\,])/,a),f===o)break}return o+" "+i[n]},eth:{watch:function(t){return new h.filter(t,p)}},db:{},shh:{watch:function(t){return new h.filter(t,d)}},haveProvider:function(){return!!h.provider.provider}};c(h,n()),c(h.eth,i()),l(h.eth,o()),c(h.db,a()),c(h.shh,f());var p={changed:"eth_changed"};c(p,u());var d={changed:"shh_changed"};c(d,s()),h.setProvider=function(t){h.provider.set(t)},e.exports=h},{}],web3:[function(t,e){var r=t("./lib/web3"),n=t("./lib/providermanager");r.provider=new n,r.filter=t("./lib/filter"),r.providers.HttpSyncProvider=t("./lib/httpsync"),r.eth.contract=t("./lib/contract"),r.abi=t("./lib/abi"),e.exports=r},{"./lib/abi":1,"./lib/contract":2,"./lib/filter":3,"./lib/httpsync":4,"./lib/providermanager":5,"./lib/web3":6}]},{},["web3"]);
\ No newline at end of file
diff --git a/example/balance.html b/example/balance.html
index d70ea648b..60b8bbe87 100644
--- a/example/balance.html
+++ b/example/balance.html
@@ -8,23 +8,21 @@
 <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;
         var originalBalance = 0;
 
-        web3.eth.balanceAt(coinbase).then(function (balance) {
-            originalBalance = web3.toDecimal(balance);
-            document.getElementById('original').innerText = 'original balance: ' + originalBalance + '    watching...';
-        });
+        var balance = web3.eth.balanceAt(coinbase);
+        var originalBalance = web3.toDecimal(balance);
+        document.getElementById('original').innerText = 'original balance: ' + originalBalance + '    watching...';
 
         web3.eth.watch({altered: coinbase}).changed(function() {
-            web3.eth.balanceAt(coinbase).then(function (balance) {
-                var currentBalance = web3.toDecimal(balance);
-                document.getElementById("current").innerText = 'current: ' + currentBalance;
-                document.getElementById("diff").innerText = 'diff:    ' + (currentBalance - originalBalance);
-            });
+            balance = web3.eth.balanceAt(coinbase)
+            var currentBalance = web3.toDecimal(balance);
+            document.getElementById("current").innerText = 'current: ' + currentBalance;
+            document.getElementById("diff").innerText = 'diff:    ' + (currentBalance - originalBalance);
         });
     }
 
diff --git a/example/contract.html b/example/contract.html
index a3f0df176..3d0260d34 100644
--- a/example/contract.html
+++ b/example/contract.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());
 
     // solidity source code
     var source = "" + 
@@ -43,10 +43,9 @@
         document.getElementById('source').innerText = source;
 
         // create contract
-        web3.eth.transact({code: web3.eth.solidity(source)}).then(function (address) {
-            contract = web3.eth.contract(address, desc);
-            document.getElementById('call').style.visibility = 'visible';
-        });
+        var address = web3.eth.transact({code: web3.eth.solidity(source)});
+        contract = web3.eth.contract(address, desc);
+        document.getElementById('call').style.visibility = 'visible';
     }
 
     function callExampleContract() {
@@ -54,9 +53,8 @@
         var param = parseInt(document.getElementById('value').value);
 
         // call the contract
-        contract.multiply(param).call().then(function(res) {
-            document.getElementById('result').innerText = res[0];
-        });
+        var res = contract.multiply(param).call();
+        document.getElementById('result').innerText = res[0];
     }
 
 </script>
diff --git a/index.js b/index.js
index 0c5bf3d44..e318f1b8e 100644
--- a/index.js
+++ b/index.js
@@ -2,11 +2,9 @@ var web3 = require('./lib/web3');
 var ProviderManager = require('./lib/providermanager');
 web3.provider = new ProviderManager();
 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.AutoProvider = require('./lib/autoprovider');
+web3.providers.HttpSyncProvider = require('./lib/httpsync');
 web3.eth.contract = require('./lib/contract');
 web3.abi = require('./lib/abi');
 
+
 module.exports = web3;
diff --git a/lib/abi.js b/lib/abi.js
index c896ab28a..21580347d 100644
--- a/lib/abi.js
+++ b/lib/abi.js
@@ -32,6 +32,9 @@ BigNumber.config({ ROUNDING_MODE: BigNumber.ROUND_DOWN });
 
 var ETH_PADDING = 32;
 
+/// method signature length in bytes
+var ETH_METHOD_SIGNATURE_LENGTH = 4;
+
 /// Finds first index of array element matching pattern
 /// @param array
 /// @param callback pattern
@@ -389,11 +392,10 @@ var outputParser = function (json) {
     return parser;
 };
 
-/// @param json abi for contract
 /// @param method name for which we want to get method signature
 /// @returns (promise) contract method signature for method with given name
-var methodSignature = function (json, name) {
-    return web3.sha3(web3.fromAscii(name));
+var methodSignature = function (name) {
+    return web3.sha3(web3.fromAscii(name)).slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2);
 };
 
 module.exports = {
diff --git a/lib/autoprovider.js b/lib/autoprovider.js
deleted file mode 100644
index 0501b93d8..000000000
--- a/lib/autoprovider.js
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
-    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 autoprovider.js
- * @authors:
- *   Marek Kotewicz <marek@ethdev.com>
- *   Marian Oancea <marian@ethdev.com>
- * @date 2014
- */
-
-/*
- * @brief if qt object is available, uses QtProvider,
- * if not tries to connect over websockets
- * if it fails, it uses HttpRpcProvider
- */
-
-var web3 = require('./web3'); // jshint ignore:line
-if (process.env.NODE_ENV !== 'build') {
-    var WebSocket = require('ws'); // jshint ignore:line
-}
-
-/**
- * AutoProvider object prototype is implementing 'provider protocol'
- * Automatically tries to setup correct provider(Qt, WebSockets or HttpRpc)
- * First it checkes if we are ethereum browser (if navigator.qt object is available)
- * if yes, we are using QtProvider
- * if no, we check if it is possible to establish websockets connection with ethereum (ws://localhost:40404/eth is default)
- * if it's not possible, we are using httprpc provider (http://localhost:8080)
- * The constructor allows you to specify uris on which we are trying to connect over http or websockets
- * You can do that by passing objects with fields httrpc and websockets
- */
-var AutoProvider = function (userOptions) {
-    if (web3.haveProvider()) {
-        return;
-    }
-
-    // before we determine what provider we are, we have to cache request
-    this.sendQueue = [];
-    this.onmessageQueue = [];
-
-    if (navigator.qt) {
-        this.provider = new web3.providers.QtProvider();
-        return;
-    }
-
-    userOptions = userOptions || {};
-    var options = {
-        httprpc: userOptions.httprpc || 'http://localhost:8080',
-        websockets: userOptions.websockets || 'ws://localhost:40404/eth'
-    };
-
-    var self = this;
-    var closeWithSuccess = function (success) {
-        ws.close();
-        if (success) {
-            self.provider = new web3.providers.WebSocketProvider(options.websockets);
-        } else {
-            self.provider = new web3.providers.HttpRpcProvider(options.httprpc);
-            self.poll = self.provider.poll.bind(self.provider);
-        }
-        self.sendQueue.forEach(function (payload) {
-            self.provider.send(payload);
-        });
-        self.onmessageQueue.forEach(function (handler) {
-            self.provider.onmessage = handler;
-        });
-    };
-
-    var ws = new WebSocket(options.websockets);
-
-    ws.onopen = function() {
-        closeWithSuccess(true);
-    };
-
-    ws.onerror = function() {
-        closeWithSuccess(false);
-    };
-};
-
-/// Sends message forward to the provider, that is being used
-/// if provider is not yet set, enqueues the message
-AutoProvider.prototype.send = function (payload) {
-    if (this.provider) {
-        this.provider.send(payload);
-        return;
-    }
-    this.sendQueue.push(payload);
-};
-
-/// On incoming message sends the message to the provider that is currently being used
-Object.defineProperty(AutoProvider.prototype, 'onmessage', {
-    set: function (handler) {
-        if (this.provider) {
-            this.provider.onmessage = handler;
-            return;
-        }
-        this.onmessageQueue.push(handler);
-    }
-});
-
-module.exports = AutoProvider;
diff --git a/lib/contract.js b/lib/contract.js
index abd8e5bdf..aa4188d40 100644
--- a/lib/contract.js
+++ b/lib/contract.js
@@ -23,9 +23,6 @@
 var web3 = require('./web3'); // jshint ignore:line
 var abi = require('./abi');
 
-/// method signature length in bytes
-var ETH_METHOD_SIGNATURE_LENGTH = 4;
-
 /**
  * This method should be called when we want to call / transact some solidity method from javascript
  * it returns an object which has same methods available as solidity contract description
@@ -60,29 +57,29 @@ var contract = function (address, desc) {
         var impl = function () {
             var params = Array.prototype.slice.call(arguments);
             var parsed = inputParser[displayName][typeName].apply(null, params);
-
-            var onSuccess = function (result) {
-                return outputParser[displayName][typeName](result);
-            };
+            var signature = abi.methodSignature(method.name);
 
             return {
                 call: function (extra) {
                     extra = extra || {};
                     extra.to = address;
-                    return abi.methodSignature(desc, method.name).then(function (signature) {
-                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;
-                        return web3.eth.call(extra).then(onSuccess);
-                    });
+                    extra.data = signature + parsed;
+
+                    var result = web3.eth.call(extra);
+                    return outputParser[displayName][typeName](result);
                 },
                 transact: function (extra) {
                     extra = extra || {};
                     extra.to = address;
-                    return abi.methodSignature(desc, method.name).then(function (signature) {
-                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;
-                        web3._currentContractAbi = desc;
-                        web3._currentContractAddress = address;
-                        return web3.eth.transact(extra).then(onSuccess);
-                    });
+                    extra.data = signature + parsed;
+
+                    /// it's used by natspec.js
+                    /// TODO: figure a better way to solve this
+                    web3._currentContractAbi = desc;
+                    web3._currentContractAddress = address;
+
+                    var result = web3.eth.transact(extra);
+                    return outputParser[displayName][typeName](result);
                 }
             };
         };
diff --git a/lib/filter.js b/lib/filter.js
index 4a82babb9..76e67e9c1 100644
--- a/lib/filter.js
+++ b/lib/filter.js
@@ -31,13 +31,9 @@ var Filter = function(options, impl) {
     this.impl = impl;
     this.callbacks = [];
 
-    var self = this;
-    this.promise = impl.newFilter(options);
-    this.promise.then(function (id) {
-        self.id = id;
-        web3.on(impl.changed, id, self.trigger.bind(self));
-        web3.provider.startPolling({call: impl.changed, args: [id]}, id);
-    });
+    this.id = impl.newFilter(options);
+    web3.on(impl.changed, this.id, this.trigger.bind(this));
+    web3.provider.startPolling({call: impl.changed, args: [this.id]}, this.id);
 };
 
 /// alias for changed*
@@ -47,10 +43,7 @@ Filter.prototype.arrived = function(callback) {
 
 /// gets called when there is new eth/shh message
 Filter.prototype.changed = function(callback) {
-    var self = this;
-    this.promise.then(function(id) {
-        self.callbacks.push(callback);
-    });
+    this.callbacks.push(callback);
 };
 
 /// trigger calling new message from people
@@ -62,20 +55,14 @@ Filter.prototype.trigger = function(messages) {
 
 /// should be called to uninstall current filter
 Filter.prototype.uninstall = function() {
-    var self = this;
-    this.promise.then(function (id) {
-        self.impl.uninstallFilter(id);
-        web3.provider.stopPolling(id);
-        web3.off(impl.changed, id);
-    });
+    this.impl.uninstallFilter(this.id);
+    web3.provider.stopPolling(this.id);
+    web3.off(impl.changed, this.id);
 };
 
 /// should be called to manually trigger getting latest messages from the client
 Filter.prototype.messages = function() {
-    var self = this;
-    return this.promise.then(function (id) {
-        return self.impl.getMessages(id);
-    });
+    return this.impl.getMessages(this.id);
 };
 
 /// alias for messages
diff --git a/lib/httprpc.js b/lib/httprpc.js
deleted file mode 100644
index de3ae8478..000000000
--- a/lib/httprpc.js
+++ /dev/null
@@ -1,126 +0,0 @@
-/*
-    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 httprpc.js
- * @authors:
- *   Marek Kotewicz <marek@ethdev.com>
- *   Marian Oancea <marian@ethdev.com>
- * @date 2014
- */
-
-// TODO: is these line is supposed to be here? 
-if (process.env.NODE_ENV !== 'build') {
-    var XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest; // jshint ignore:line
-}
-
-/**
- * HttpRpcProvider object prototype is implementing 'provider protocol'
- * Should be used when we want to connect to ethereum backend over http && jsonrpc
- * It's compatible with cpp client
- * The contructor allows to specify host uri
- * This provider is using in-browser polling mechanism
- */
-var HttpRpcProvider = 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
-    };
-}
-
-/// Prototype object method 
-/// Asynchronously sends request to server
-/// @param payload is inner message object
-/// @param cb is callback which is being called when response is comes back
-HttpRpcProvider.prototype.sendRequest = function (payload, cb) {
-    var data = formatJsonRpcObject(payload);
-
-    var request = new XMLHttpRequest();
-    request.open("POST", this.host, true);
-    request.send(JSON.stringify(data));
-    request.onreadystatechange = function () {
-        if (request.readyState === 4 && cb) {
-            cb(request);
-        }
-    };
-};
-
-/// Prototype object method
-/// Should be called when we want to send single api request to server
-/// Asynchronous
-/// On response it passes message to handlers
-/// @param payload is inner message object
-HttpRpcProvider.prototype.send = function (payload) {
-    var self = this;
-    this.sendRequest(payload, function (request) {
-        self.handlers.forEach(function (handler) {
-            handler.call(self, formatJsonRpcMessage(request.responseText));
-        });
-    });
-};
-
-/// Prototype object method
-/// Should be called only for polling requests
-/// Asynchronous
-/// On response it passege message to handlers, but only if message's result is true or not empty array
-/// Otherwise response is being silently ignored
-/// @param payload is inner message object
-/// @id is id of poll that we are calling
-HttpRpcProvider.prototype.poll = function (payload, id) {
-    var self = this;
-    this.sendRequest(payload, function (request) {
-        var parsed = JSON.parse(request.responseText);
-        if (parsed.error || (parsed.result instanceof Array ? parsed.result.length === 0 : !parsed.result)) {
-            return;
-        }
-        self.handlers.forEach(function (handler) {
-            handler.call(self, {_event: payload.call, _id: id, data: parsed.result});
-        });
-    });
-};
-
-/// Prototype object property
-/// Should be used to set message handlers for this provider
-Object.defineProperty(HttpRpcProvider.prototype, "onmessage", {
-    set: function (handler) {
-        this.handlers.push(handler);
-    }
-});
-
-module.exports = HttpRpcProvider;
-
diff --git a/lib/httpsync.js b/lib/httpsync.js
new file mode 100644
index 000000000..67a3988f9
--- /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 || 'http://localhost:8080';
+};
+
+/// 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..c3b121451 100644
--- a/lib/providermanager.js
+++ b/lib/providermanager.js
@@ -56,21 +56,20 @@ var ProviderManager = function() {
 };
 
 /// sends outgoing requests, if provider is not available, enqueue the request
-ProviderManager.prototype.send = function(data, cb) {
-    data._id = this.id;
-    if (cb) {
-        web3._callbacks[data._id] = cb;
-    }
+ProviderManager.prototype.send = function(data) {
 
     data.args = data.args || [];
-    this.id++;
+    data._id = 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 undefined;
     }
+
+    //TODO: handle error here? 
+    var result = this.provider.send(data);
+    result = JSON.parse(result);
+    return result.result;
 };
 
 /// setups provider, which will be used for sending messages
@@ -83,14 +82,6 @@ ProviderManager.prototype.set = function(provider) {
     this.ready = true;
 };
 
-/// resends queued messages
-ProviderManager.prototype.sendQueued = function() {
-    for(var i = 0; this.queued.length; i++) {
-        // Resend
-        this.send(this.queued[i]);
-    }
-};
-
 /// @returns true if the provider i properly set
 ProviderManager.prototype.installed = function() {
     return this.provider !== undefined;
diff --git a/lib/qt.js b/lib/qt.js
deleted file mode 100644
index 1b3a9547b..000000000
--- a/lib/qt.js
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
-    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 qt.js
- * @authors:
- *   Jeffrey Wilcke <jeff@ethdev.com>
- *   Marek Kotewicz <marek@ethdev.com>
- * @date 2014
- */
-
-/**
- * QtProvider object prototype is implementing 'provider protocol'
- * Should be used inside ethereum browser. It's compatible with cpp and go clients.
- * It uses navigator.qt object to pass the messages to native bindings
- */
-var QtProvider = function() {
-    this.handlers = [];
-
-    var self = this;
-    navigator.qt.onmessage = function (message) {
-        self.handlers.forEach(function (handler) {
-            handler.call(self, JSON.parse(message.data));
-        });
-    };
-};
-
-/// Prototype object method
-/// Should be called when we want to send single api request to native bindings
-/// Asynchronous
-/// Response will be received by navigator.qt.onmessage method and passed to handlers
-/// @param payload is inner message object
-QtProvider.prototype.send = function(payload) {
-    navigator.qt.postMessage(JSON.stringify(payload));
-};
-
-/// Prototype object property
-/// Should be used to set message handlers for this provider
-Object.defineProperty(QtProvider.prototype, "onmessage", {
-    set: function(handler) {
-        this.handlers.push(handler);
-    }
-});
-
-module.exports = QtProvider;
diff --git a/lib/web3.js b/lib/web3.js
index f071eea49..96002a232 100644
--- a/lib/web3.js
+++ b/lib/web3.js
@@ -23,48 +23,32 @@
  * @date 2014
  */
 
-/// Recursively resolves all promises in given object and replaces the resolved values with promises
-/// @param any object/array/promise/anything else..
-/// @returns (resolves) object with replaced promises with their result 
-function flattenPromise (obj) {
-    if (obj instanceof Promise) {
-        return Promise.resolve(obj);
-    }
-
-    if (obj instanceof Array) {
-        return new Promise(function (resolve) {
-            var promises = obj.map(function (o) {
-                return flattenPromise(o);
-            });
-
-            return Promise.all(promises).then(function (res) {
-                for (var i = 0; i < obj.length; i++) {
-                    obj[i] = res[i];
-                }
-                resolve(obj);
-            });
-        });
-    }
-
-    if (obj instanceof Object) {
-        return new Promise(function (resolve) {
-            var keys = Object.keys(obj);
-            var promises = keys.map(function (key) {
-                return flattenPromise(obj[key]);
-            });
-
-            return Promise.all(promises).then(function (res) {
-                for (var i = 0; i < keys.length; i++) {
-                    obj[keys[i]] = res[i];
-                }
-                resolve(obj);
-            });
-        });
-    }
-
-    return Promise.resolve(obj);
+if (process.env.NODE_ENV !== 'build') {
+    var BigNumber = require('bignumber.js');
 }
 
+var ETH_UNITS = [ 
+    'wei', 
+    'Kwei', 
+    'Mwei', 
+    'Gwei', 
+    'szabo', 
+    'finney', 
+    'ether', 
+    'grand', 
+    'Mether', 
+    'Gether', 
+    'Tether', 
+    'Pether', 
+    'Eether', 
+    'Zether', 
+    'Yether', 
+    'Nether', 
+    'Dether', 
+    'Vether', 
+    'Uether' 
+];
+
 /// @returns an array of objects describing web3 api methods
 var web3Methods = function () {
     return [
@@ -169,21 +153,11 @@ 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;
+            return web3.provider.send({
+                call: call,
+                args: args
             });
         };
     });
@@ -195,30 +169,16 @@ 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);
-                });
+            return web3.provider.send({
+                call: property.getter
             });
         };
+
         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);
+                return web3.provider.send({
+                    call: property.setter,
+                    args: [val]
                 });
             };
         }
@@ -226,15 +186,6 @@ var setupProperties = function (obj, properties) {
     });
 };
 
-// TODO: import from a dependency, don't duplicate.
-var hexToDec = function (hex) {
-    return parseInt(hex, 16).toString();
-};
-
-var decToHex = function (dec) {
-    return parseInt(dec).toString(16);
-};
-
 /// setups web3 object, and it's in-browser executed methods
 var web3 = {
     _callbacks: {},
@@ -281,19 +232,20 @@ var web3 = {
 
     /// @returns decimal representaton of hex value prefixed by 0x
     toDecimal: function (val) {
-        return hexToDec(val.substring(2));
+        return (new BigNumber(val.substring(2), 16).toString(10));
     },
 
     /// @returns hex representation (prefixed by 0x) of decimal value
     fromDecimal: function (val) {
-        return "0x" + decToHex(val);
+        return "0x" + (new BigNumber(val).toString(16));
     },
 
     /// used to transform value/string to eth string
+    /// TODO: use BigNumber.js to parse int
     toEth: function(str) {
         var val = typeof str === "string" ? str.indexOf('0x') === 0 ? parseInt(str.substr(2), 16) : parseInt(str) : str;
         var unit = 0;
-        var units = [ 'wei', 'Kwei', 'Mwei', 'Gwei', 'szabo', 'finney', 'ether', 'grand', 'Mether', 'Gether', 'Tether', 'Pether', 'Eether', 'Zether', 'Yether', 'Nether', 'Dether', 'Vether', 'Uether' ];
+        var units = ETH_UNITS;
         while (val > 3000 && unit < units.length - 1)
         {
             val /= 1000;
@@ -330,35 +282,6 @@ var web3 = {
         }
     },
 
-    /// used by filter to register callback with given id
-    on: function(event, id, cb) {
-        if(web3._events[event] === undefined) {
-            web3._events[event] = {};
-        }
-
-        web3._events[event][id] = cb;
-        return this;
-    },
-
-    /// used by filter to unregister callback with given id
-    off: function(event, id) {
-        if(web3._events[event] !== undefined) {
-            delete web3._events[event][id];
-        }
-
-        return this;
-    },
-
-    /// used to trigger callback registered by filter
-    trigger: function(event, id, data) {
-        var callbacks = web3._events[event];
-        if (!callbacks || !callbacks[id]) {
-            return;
-        }
-        var cb = callbacks[id];
-        cb(data);
-    },
-
     /// @returns true if provider is installed
     haveProvider: function() {
         return !!web3.provider.provider;
@@ -385,26 +308,9 @@ var shhWatch = {
 setupMethods(shhWatch, shhWatchMethods());
 
 web3.setProvider = function(provider) {
-    provider.onmessage = messageHandler;
+    //provider.onmessage = messageHandler; // there will be no async calls, to remove
     web3.provider.set(provider);
-    web3.provider.sendQueued();
 };
 
-/// callled when there is new incoming message
-function messageHandler(data) {
-    if(data._event !== undefined) {
-        web3.trigger(data._event, data._id, data.data);
-        return;
-    }
-
-    if(data._id) {
-        var cb = web3._callbacks[data._id];
-        if (cb) {
-            cb.call(this, data.error, data.data);
-            delete web3._callbacks[data._id];
-        }
-    }
-}
-
 module.exports = web3;
 
diff --git a/lib/websocket.js b/lib/websocket.js
deleted file mode 100644
index e8663ecf5..000000000
--- a/lib/websocket.js
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
-    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 websocket.js
- * @authors:
- *   Jeffrey Wilcke <jeff@ethdev.com>
- *   Marek Kotewicz <marek@ethdev.com>
- *   Marian Oancea <marian@ethdev.com>
- * @date 2014
- */
-
-// TODO: is these line is supposed to be here? 
-if (process.env.NODE_ENV !== 'build') {
-    var WebSocket = require('ws'); // jshint ignore:line
-}
-
-/**
- * WebSocketProvider object prototype is implementing 'provider protocol'
- * Should be used when we want to connect to ethereum backend over websockets
- * It's compatible with go client
- * The constructor allows to specify host uri
- */
-var WebSocketProvider = function(host) {
-
-    // onmessage handlers
-    this.handlers = [];
-
-    // queue will be filled with messages if send is invoked before the ws is ready
-    this.queued = [];
-    this.ready = false;
-
-    this.ws = new WebSocket(host);
-
-    var self = this;
-    this.ws.onmessage = function(event) {
-        for(var i = 0; i < self.handlers.length; i++) {
-            self.handlers[i].call(self, JSON.parse(event.data), event);
-        }
-    };
-
-    this.ws.onopen = function() {
-        self.ready = true;
-
-        for (var i = 0; i < self.queued.length; i++) {
-            // Resend
-            self.send(self.queued[i]);
-        }
-    };
-};
-
-/// Prototype object method
-/// Should be called when we want to send single api request to server
-/// Asynchronous, it's using websockets
-/// Response for the call will be received by ws.onmessage
-/// @param payload is inner message object
-WebSocketProvider.prototype.send = function(payload) {
-    if (this.ready) {
-        var data = JSON.stringify(payload);
-
-        this.ws.send(data);
-    } else {
-        this.queued.push(payload);
-    }
-};
-
-/// Prototype object method
-/// Should be called to add handlers
-WebSocketProvider.prototype.onMessage = function(handler) {
-    this.handlers.push(handler);
-};
-
-/// Prototype object method
-/// Should be called to close websockets connection
-WebSocketProvider.prototype.unload = function() {
-    this.ws.close();
-};
-
-/// Prototype object property
-/// Should be used to set message handlers for this provider
-Object.defineProperty(WebSocketProvider.prototype, "onmessage", {
-    set: function(provider) { this.onMessage(provider); }
-});
-
-if (typeof(module) !== "undefined")
-    module.exports = WebSocketProvider;
diff --git a/test/db.methods.js b/test/db.methods.js
index 662f4e7cc..55cf699fe 100644
--- a/test/db.methods.js
+++ b/test/db.methods.js
@@ -3,7 +3,6 @@ require('es6-promise').polyfill();
 var assert = require('assert');
 var web3 = require('../index.js');
 var u = require('./utils.js');
-web3.setProvider(new web3.providers.WebSocketProvider('http://localhost:8080')); // TODO: create some mock provider
 
 describe('web3', function() {
     describe('db', function() {
diff --git a/test/eth.methods.js b/test/eth.methods.js
index 892db0d8b..5baedb884 100644
--- a/test/eth.methods.js
+++ b/test/eth.methods.js
@@ -3,7 +3,6 @@ require('es6-promise').polyfill();
 var assert = require('assert');
 var web3 = require('../index.js');
 var u = require('./utils.js');
-web3.setProvider(new web3.providers.WebSocketProvider('http://localhost:8080')); // TODO: create some mock provider
 
 describe('web3', function() {
     describe('eth', function() {
diff --git a/test/shh.methods.js b/test/shh.methods.js
index f2f56edbc..2e7e1387b 100644
--- a/test/shh.methods.js
+++ b/test/shh.methods.js
@@ -3,7 +3,6 @@ require('es6-promise').polyfill();
 var assert = require('assert');
 var web3 = require('../index.js');
 var u = require('./utils.js');
-web3.setProvider(new web3.providers.WebSocketProvider('http://localhost:8080')); // TODO: create some mock provider
 
 describe('web3', function() {
     describe('shh', function() {
diff --git a/test/utils.js b/test/utils.js
index 8617348e4..8a1e9a0b6 100644
--- a/test/utils.js
+++ b/test/utils.js
@@ -8,7 +8,7 @@ var methodExists = function (object, method) {
 
 var propertyExists = function (object, property) {
     it('should have property ' + property + ' implemented', function() {
-        assert.equal('object', typeof object[property], 'property ' + property + ' is not implemented');
+        assert.notEqual('undefined', typeof object[property], 'property ' + property + ' is not implemented');
     });
 };
 
diff --git a/test/web3.methods.js b/test/web3.methods.js
index 5c30177e5..3ff4103e3 100644
--- a/test/web3.methods.js
+++ b/test/web3.methods.js
@@ -3,7 +3,6 @@ require('es6-promise').polyfill();
 var assert = require('assert');
 var web3 = require('../index.js');
 var u = require('./utils.js');
-web3.setProvider(new web3.providers.WebSocketProvider('http://localhost:8080')); // TODO: create some mock provider
 
 describe('web3', function() {
     u.methodExists(web3, 'sha3');