Refactor blockchain backing service
This commit is contained in:
Yemel Jardi
parent
b2f4d4d870
commit
33801e9587
12 changed files with 569 additions and 548 deletions
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@ -109,7 +109,9 @@ angular.module('copayApp.controllers').controller('TransactionsController',
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var addresses = w.getAddressesStr();
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if (addresses.length > 0) {
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$scope.blockchain_txs = $scope.wallet.txCache || [];
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w.blockchain.getTransactions(addresses, function(txs) {
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w.blockchain.getTransactions(addresses, function(err, txs) {
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if (err) throw err;
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$timeout(function() {
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$scope.blockchain_txs = [];
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for (var i = 0; i < txs.length; i++) {
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@ -1,72 +1,176 @@
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'use strict';
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var util = require('util');
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var async = require('async');
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var request = require('request');
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var bitcore = require('bitcore');
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var coinUtil = bitcore.util;
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var io = require('socket.io-client');
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var EventEmitter = require('events').EventEmitter;
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var preconditions = require('preconditions').singleton();
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var http;
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if (process.version) {
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http = require('http');
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};
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/*
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This class lets interfaces with the blockchain, making general queries and
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subscribing to transactions on adressess and blocks.
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function Insight(opts) {
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opts = opts || {};
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this.host = opts.host || 'localhost';
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this.port = opts.port || '3001';
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this.schema = opts.schema || 'http';
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this.retryDelay = opts.retryDelay || 5000;
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Opts:
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- host
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- port
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- schema
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- reconnection (optional)
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- reconnectionDelay (optional)
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Events:
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- tx: activity on subscribed address.
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- block: a new block that includes a subscribed address.
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- connect: the connection with the blockchain is ready.
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- disconnect: the connection with the blochckain is unavailable.
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*/
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var Insight = function (opts) {
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this.status = this.STATUS.DISCONNECTED;
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this.subscribed = [];
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this.listeningBlocks = false;
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preconditions.checkArgument(opts).shouldBeObject(opts)
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.checkArgument(opts.host)
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.checkArgument(opts.port)
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.checkArgument(opts.schema);
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this.url = opts.schema + '://' + opts.host + ':' + opts.port;
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this.opts = {
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'reconnection': opts.reconnection || true,
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'reconnectionDelay': opts.reconnectionDelay || 1000,
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'secure': opts.schema === 'https'
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};
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this.socket = this.getSocket(this.url, this.opts);
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// Emmit connection events
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var self = this;
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this.socket.on('connect', function() {
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self.status = self.STATUS.CONNECTED;
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self.suscribeToBlocks();
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self.emit('connect', 0);
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});
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this.socket.on('connect_error', function() {
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if (self.status != self.STATUS.CONNECTED) return;
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self.status = self.STATUS.DISCONNECTED;
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self.emit('disconnect');
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});
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this.socket.on('connect_timeout', function() {
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if (self.status != self.STATUS.CONNECTED) return;
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self.status = self.STATUS.DISCONNECTED;
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self.emit('disconnect');
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});
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this.socket.on('reconnect', function(attempt) {
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if (self.status != self.STATUS.DISCONNECTED) return;
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self.status = self.STATUS.CONNECTED;
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self.emit('connect', attempt);
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});
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}
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function _asyncForEach(array, fn, callback) {
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array = array.slice(0);
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util.inherits(Insight, EventEmitter);
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function processOne() {
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var item = array.pop();
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fn(item, function(result) {
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if (array.length > 0) {
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setTimeout(processOne, 0); // schedule immediately
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} else {
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callback(); // Done!
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}
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});
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}
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if (array.length > 0) {
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setTimeout(processOne, 0); // schedule immediately
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} else {
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callback(); // Done!
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}
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Insight.prototype.STATUS = {
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CONNECTED: 'connected',
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DISCONNECTED: 'disconnected',
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DESTROYED: 'destroyed'
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}
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/** @private */
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Insight.prototype.suscribeToBlocks = function() {
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if (this.listeningBlocks || !this.socket.connected) return;
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var self = this;
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this.socket.emit('subscribe', 'inv');
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this.socket.on('block', function(blockHash) {
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self.emit('block', blockHash);
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});
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this.listeningBlocks = true;
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}
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/** @private */
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Insight.prototype.getSocket = function(url, opts) {
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return io(this.url, this.opts);
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}
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/** @private */
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Insight.prototype.request = function(path, cb) {
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preconditions.checkArgument(url).shouldBeFunction(cb);
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request(this.url + path, cb);
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}
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/** @private */
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Insight.prototype.requestPost = function(path, data, cb) {
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preconditions.checkArgument(url).checkArgument(data).shouldBeFunction(cb);
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request.post(this.url, cb).form(data);
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}
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Insight.prototype.destroy = function() {
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this.socket.destroy();
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this.subscribed = [];
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this.status = this.STATUS.DESTROYED;
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this.removeAllListeners();
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};
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Insight.prototype._getOptions = function(method, path, data) {
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return {
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host: this.host,
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port: this.port,
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schema: this.schema,
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method: method,
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path: path,
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data: data,
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headers: {
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'Access-Control-Request-Headers': ''
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Insight.prototype.subscribe = function(addresses) {
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addresses = Array.isArray(addresses) ? addresses : [addresses];
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var self = this;
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function handlerFor(self, address) {
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return function (txid) {
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// verify the address is still subscribed
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if (self.subscribed.indexOf(address) == -1) return;
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self.emit('tx', {address: address, txid: txid});
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}
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};
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}
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addresses.forEach(function(address) {
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preconditions.checkArgument(new bitcore.Address(address).isValid());
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self.subscribed.push(address);
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self.socket.emit('subscribe', address);
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self.socket.on(address, handlerFor(self, address));
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});
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};
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Insight.prototype.unsubscribe = function(addresses) {
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addresses = Array.isArray(addresses) ? addresses : [addresses];
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var self = this;
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// This is vulneable to txid maneability
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// TODO: if ret = false,
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// check output address from similar transactions.
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//
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Insight.prototype.checkSentTx = function(tx, cb) {
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var hash = coinUtil.formatHashFull(tx.getHash());
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var options = this._getOptions('GET', '/api/tx/' + hash);
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addresses.forEach(function(address) {
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preconditions.checkArgument(new bitcore.Address(address).isValid());
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self.socket.removeEventListener(address);
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});
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this._request(options, function(err, res) {
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if (err) return cb(err);
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var ret = false;
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if (res && res.txid === hash) {
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ret = hash;
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}
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return cb(err, ret);
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this.subscribed = this.subscribed.filter(function(a) {
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return addresses.indexOf(a) == -1;
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});
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};
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Insight.prototype.unsubscribeAll = function() {
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this.unsubscribe(this.subscribed);
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};
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Insight.prototype.broadcast = function(rawtx, cb) {
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preconditions.checkArgument(rawtx);
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preconditions.shouldBeFunction(cb);
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this.requestPost('/api/tx/send', {rawtx: rawtx}, function(err, res, body) {
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if (err || res.statusCode != 200) cb(err || res);
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cb(null, JSON.parse(body).txid);
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});
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};
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Insight.prototype.getTransaction = function(txid, cb) {
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preconditions.shouldBeFunction(cb);
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this.request('/api/tx/' + txid, function(err, res, body) {
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if (err || res.statusCode != 200 || !body) return cb(err || res);
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cb(null, JSON.parse(body));
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});
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};
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@ -75,77 +179,53 @@ Insight.prototype.getTransactions = function(addresses, cb) {
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preconditions.shouldBeFunction(cb);
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var self = this;
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if (!addresses || !addresses.length) return cb([]);
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if (!addresses.length) return cb(null, []);
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var txids = [];
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var txs = [];
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_asyncForEach(addresses, function(addr, callback) {
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var options = self._getOptions('GET', '/api/addr/' + addr);
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self._request(options, function(err, res) {
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if (res && res.transactions) {
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var txids_tmp = res.transactions;
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for (var i = 0; i < txids_tmp.length; i++) {
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txids.push(txids_tmp[i]);
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}
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}
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callback();
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// Iterator: get a list of transaction ids for an address
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function getTransactionIds(address, next) {
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self.request('/api/addr/' + address, function(err, res, body) {
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if (err || res.statusCode != 200 || !body) return next(err || res);
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next(null, JSON.parse(body).transactions);
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});
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}, function() {
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var uniqueTxids = {};
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for (var k in txids) {
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uniqueTxids[txids[k]] = 1;
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}
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_asyncForEach(Object.keys(uniqueTxids), function(txid, callback2) {
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var options = self._getOptions('GET', '/api/tx/' + txid);
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self._request(options, function(err, res) {
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txs.push(res);
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callback2();
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});
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}, function() {
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return cb(txs);
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}
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async.map(addresses, getTransactionIds, function then(err, txids) {
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if (err) return cb(err);
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// txids it's a list of list, let's fix that:
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var txidsList = txids.reduce(function(a, r) {
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return r.concat(a);
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});
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// Remove duplicated txids
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txidsList = txidsList.filter(function(elem, pos, self) {
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return self.indexOf(elem) == pos;
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});
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// Now get the transactions for that list of txIds
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async.map(txidsList, self.getTransaction.bind(self), function then(err, txs) {
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if (err) return cb(err);
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cb(null, txs);
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});
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});
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};
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Insight.prototype.getUnspent = function(addresses, cb) {
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if (!addresses || !addresses.length) return cb(null, []);
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preconditions.shouldBeArray(addresses);
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preconditions.shouldBeFunction(cb);
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var all = [];
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var options = this._getOptions('POST', '/api/addrs/utxo', 'addrs=' + addresses.join(','));
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var self = this;
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this._request(options, function(err, res) {
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if (err) {
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return cb(err);
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}
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if (res && res.length > 0) {
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all = all.concat(res);
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}
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return cb(null, all);
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this.requestPost('/api/addrs/utxo', {addrs: addresses.join(',')}, function(err, res, body) {
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if (err || res.statusCode != 200) return cb(err || res);
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cb(null, JSON.parse(body));
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});
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};
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Insight.prototype.sendRawTransaction = function(rawtx, cb) {
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if (!rawtx) throw new Error('rawtx must be set');
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Insight.prototype.getActivity = function(addresses, cb) {
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preconditions.shouldBeArray(addresses);
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var options = this._getOptions('POST', '/api/tx/send', 'rawtx=' + rawtx);
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this._request(options, function(err, res) {
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if (err) return cb();
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this.getTransactions(addresses, function then(err, txs) {
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if (err) return cb(err);
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return cb(res.txid);
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});
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};
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Insight.prototype.checkActivity = function(addresses, cb) {
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if (!addresses) throw new Error('address must be set');
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this.getTransactions(addresses, function onResult(txs) {
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var flatArray = function(xss) {
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return xss.reduce(function(r, xs) {
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return r.concat(xs);
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@ -177,112 +257,4 @@ Insight.prototype.checkActivity = function(addresses, cb) {
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});
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};
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Insight.prototype._requestNode = function(options, callback) {
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if (options.method === 'POST') {
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options.headers = {
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'Content-Type': 'application/x-www-form-urlencoded',
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'Content-Length': options.data.length,
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};
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}
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var req = http.request(options, function(response) {
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var ret, errTxt, e;
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if (response.statusCode == 200 || response.statusCode === 304) {
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response.on('data', function(chunk) {
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try {
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ret = JSON.parse(chunk);
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} catch (e2) {
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errTxt = 'CRITICAL: Wrong response from insight' + e2;
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}
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});
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} else {
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errTxt = "INSIGHT ERROR:" + response.statusCode;
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console.log(errTxt);
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e = new Error(errTxt);
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return callback(e);
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}
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response.on('end', function() {
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if (errTxt) {
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console.log("INSIGHT ERROR:" + errTxt);
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e = new Error(errTxt);
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}
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return callback(e, ret);
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});
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response.on('error', function(e) {
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return callback(e, ret);
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});
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});
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if (options.data) {
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req.write(options.data);
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}
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req.end();
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};
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Insight.prototype._requestBrowser = function(options, callback) {
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var self = this;
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var request = new XMLHttpRequest();
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var url = (options.schema || 'http') + '://' + options.host;
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if (options.port !== 80) {
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url = url + ':' + options.port;
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}
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url = url + options.path;
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if (options.data && options.method === 'GET') {
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url = url + '?' + options.data;
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}
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request.open(options.method, url, true);
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request.timeout = 5000;
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request.ontimeout = function() {
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setTimeout(function() {
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return self._request(options, callback);
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}, self.retryDelay);
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return callback(new Error('Insight request timeout'));
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};
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request.onreadystatechange = function() {
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if (request.readyState !== 4) return;
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var ret, errTxt, e;
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if (request.status === 200 || request.status === 304) {
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try {
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ret = JSON.parse(request.responseText);
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} catch (e2) {
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errTxt = 'CRITICAL: Wrong response from insight' + e2;
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}
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} else if (request.status >= 400 && request.status < 499) {
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errTxt = 'CRITICAL: Bad request to insight: '+request.status;
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} else {
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errTxt = 'Error code: ' + request.status + ' - Status: ' + request.statusText + ' - Description: ' + request.responseText;
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setTimeout(function() {
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return self._request(options, callback);
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}, self.retryDelay);
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}
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if (errTxt) {
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console.log("INSIGHT ERROR:", e);
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e = new Error(errTxt);
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}
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return callback(e, ret);
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};
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if (options.method === 'POST') {
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request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
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}
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request.send(options.data || null);
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};
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Insight.prototype._request = function(options, callback) {
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if (typeof process === 'undefined' || !process.version) {
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this._requestBrowser(options, callback);
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} else {
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this._requestNode(options, callback);
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}
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};
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module.exports = Insight;
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@ -193,14 +193,12 @@ Wallet.prototype._getKeyMap = function(txp) {
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Wallet.prototype._checkSentTx = function(ntxid, cb) {
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var txp = this.txProposals.get(ntxid);
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var tx = txp.builder.build();
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var txid = bitcore.util.formatHashFull(tx.getHash());
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this.blockchain.checkSentTx(tx, function(err, txid) {
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var ret = false;
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if (txid) {
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txp.setSent(txid);
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ret = txid;
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}
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return cb(ret);
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this.blockchain.getTransaction(txid, function(err, tx) {
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if (err) return cb(false);
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txp.setSent(tx.txid);
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cb(ret);
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});
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};
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@ -806,7 +804,9 @@ Wallet.prototype.sendTx = function(ntxid, cb) {
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this.log('Raw transaction: ', txHex);
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var self = this;
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this.blockchain.sendRawTransaction(txHex, function(txid) {
|
||||
this.blockchain.broadcast(txHex, function(err, txid) {
|
||||
if(err) throw err;
|
||||
|
||||
self.log('BITCOIND txid:', txid);
|
||||
if (txid) {
|
||||
self.txProposals.get(ntxid).setSent(txid);
|
||||
|
|
@ -1724,7 +1724,7 @@ Wallet.prototype.indexDiscovery = function(start, change, copayerIndex, gap, cb)
|
|||
// Optimize window to minimize the derivations.
|
||||
var scanWindow = (lastActive == -1) ? gap : gap - (scanIndex - lastActive) + 1;
|
||||
var addresses = self.deriveAddresses(scanIndex, scanWindow, change, copayerIndex);
|
||||
self.blockchain.checkActivity(addresses, function(err, actives) {
|
||||
self.blockchain.getActivity(addresses, function(err, actives) {
|
||||
if (err) throw err;
|
||||
|
||||
// Check for new activities in the newlly scanned addresses
|
||||
|
|
@ -1752,6 +1752,7 @@ Wallet.prototype.close = function() {
|
|||
this.log('## CLOSING');
|
||||
this.lock.release();
|
||||
this.network.cleanUp();
|
||||
this.blockchain.destroy();
|
||||
};
|
||||
|
||||
Wallet.prototype.getNetwork = function() {
|
||||
|
|
|
|||
|
|
@ -2,7 +2,7 @@
|
|||
var bitcore = require('bitcore');
|
||||
|
||||
angular.module('copayApp.services')
|
||||
.factory('controllerUtils', function($rootScope, $sce, $location, notification, $timeout, Socket, video, uriHandler) {
|
||||
.factory('controllerUtils', function($rootScope, $sce, $location, notification, $timeout, video, uriHandler) {
|
||||
var root = {};
|
||||
root.getVideoMutedStatus = function(copayer) {
|
||||
if (!$rootScope.videoInfo) return;
|
||||
|
|
@ -24,8 +24,6 @@ angular.module('copayApp.services')
|
|||
if ($rootScope.wallet)
|
||||
$rootScope.wallet.close();
|
||||
|
||||
Socket.removeAllListeners();
|
||||
|
||||
$rootScope.wallet = null;
|
||||
delete $rootScope['wallet'];
|
||||
|
||||
|
|
@ -68,7 +66,6 @@ angular.module('copayApp.services')
|
|||
uriHandler.register();
|
||||
$rootScope.unitName = config.unitName;
|
||||
$rootScope.txAlertCount = 0;
|
||||
$rootScope.insightError = 0;
|
||||
$rootScope.isCollapsed = true;
|
||||
$rootScope.$watch('txAlertCount', function(txAlertCount) {
|
||||
if (txAlertCount && txAlertCount > 0) {
|
||||
|
|
@ -100,8 +97,6 @@ angular.module('copayApp.services')
|
|||
|
||||
|
||||
root.startNetwork = function(w, $scope) {
|
||||
Socket.removeAllListeners();
|
||||
|
||||
root.setupRootVariables();
|
||||
root.installStartupHandlers(w, $scope);
|
||||
root.setSocketHandlers();
|
||||
|
|
@ -125,6 +120,8 @@ angular.module('copayApp.services')
|
|||
});
|
||||
w.on('ready', function(myPeerID) {
|
||||
$rootScope.wallet = w;
|
||||
|
||||
|
||||
if ($rootScope.pendingPayment) {
|
||||
$location.path('send');
|
||||
} else {
|
||||
|
|
@ -298,47 +295,20 @@ angular.module('copayApp.services')
|
|||
});
|
||||
}
|
||||
|
||||
var connectionLost = false;
|
||||
$rootScope.$watch('insightError', function(status) {
|
||||
if (!status) return;
|
||||
|
||||
// Reconnected
|
||||
if (status === -1) {
|
||||
if (!connectionLost) return; // Skip on first reconnect
|
||||
connectionLost = false;
|
||||
root.setConnectionListeners = function(wallet) {
|
||||
wallet.blockchain.on('connect', function(attempts) {
|
||||
if (attempts == 0) return;
|
||||
notification.success('Networking restored', 'Connection to Insight re-established');
|
||||
return;
|
||||
}
|
||||
});
|
||||
|
||||
// Retry
|
||||
if (status == 1) return; // Skip the first try
|
||||
connectionLost = true;
|
||||
notification.error('Networking problem', 'Connection to Insight lost, reconnecting (attempt number ' + (status - 1) + ')');
|
||||
});
|
||||
|
||||
root._setCommError = function(e) {
|
||||
if ($rootScope.insightError < 0)
|
||||
$rootScope.insightError = 0;
|
||||
$rootScope.insightError++;
|
||||
};
|
||||
|
||||
root._clearCommError = function(e) {
|
||||
if ($rootScope.insightError > 0)
|
||||
$rootScope.insightError = -1;
|
||||
else
|
||||
$rootScope.insightError = 0;
|
||||
};
|
||||
wallet.blockchain.on('disconnect', function() {
|
||||
notification.error('Networking problem', 'Connection to Insight lost, trying to reconnect...');
|
||||
});
|
||||
}
|
||||
|
||||
root.setSocketHandlers = function() {
|
||||
root.updateAddressList();
|
||||
if (!Socket.sysEventsSet) {
|
||||
Socket.sysOn('error', root._setCommError);
|
||||
Socket.sysOn('reconnect_error', root._setCommError);
|
||||
Socket.sysOn('reconnect_failed', root._setCommError);
|
||||
Socket.sysOn('connect', root._clearCommError);
|
||||
Socket.sysOn('reconnect', root._clearCommError);
|
||||
Socket.sysEventsSet = true;
|
||||
}
|
||||
|
||||
if (!$rootScope.wallet) return;
|
||||
|
||||
var currentAddrs = Socket.getListeners();
|
||||
|
|
|
|||
|
|
@ -1,80 +0,0 @@
|
|||
'use strict';
|
||||
|
||||
angular.module('copayApp.services').factory('Socket',
|
||||
function($rootScope) {
|
||||
var listeners = [];
|
||||
var url = (config.socket.schema || 'http') + '://' + config.socket.host + ':' + config.socket.port;
|
||||
var opts = {
|
||||
'reconnection': true,
|
||||
'reconnectionDelay': config.socket.reconnectDelay || 500,
|
||||
'secure': config.socket.schema === 'https' ? true : false,
|
||||
};
|
||||
|
||||
var socket = io(url, opts);
|
||||
|
||||
return {
|
||||
on: function(event, callback) {
|
||||
var wrappedCallback = function() {
|
||||
var args = arguments;
|
||||
$rootScope.$apply(function() {
|
||||
callback.apply(socket, args);
|
||||
});
|
||||
};
|
||||
socket.on(event, wrappedCallback);
|
||||
if (event !== 'connect') {
|
||||
listeners.push({
|
||||
event: event,
|
||||
fn: wrappedCallback
|
||||
});
|
||||
}
|
||||
},
|
||||
sysOn: function(event, callback) {
|
||||
var wrappedCallback = function() {
|
||||
var args = arguments;
|
||||
$rootScope.$apply(function() {
|
||||
callback.apply(socket, args);
|
||||
});
|
||||
};
|
||||
socket.io.on(event, wrappedCallback);
|
||||
},
|
||||
getListeners: function() {
|
||||
var ret = {};
|
||||
|
||||
var addrList = listeners
|
||||
.filter(function(i) {
|
||||
return i.event != 'block';
|
||||
})
|
||||
.map(function(i) {
|
||||
return i.event;
|
||||
});
|
||||
|
||||
for (var i in addrList) {
|
||||
ret[addrList[i]] = 1;
|
||||
}
|
||||
return ret;
|
||||
},
|
||||
isListeningBlocks: function() {
|
||||
return listeners.filter(function(i) {
|
||||
return i.event == 'block';
|
||||
}).length > 0;
|
||||
},
|
||||
emit: function(event, data, callback) {
|
||||
socket.emit(event, data, function() {
|
||||
var args = arguments;
|
||||
$rootScope.$apply(function() {
|
||||
if (callback) {
|
||||
callback.apply(socket, args);
|
||||
}
|
||||
});
|
||||
});
|
||||
},
|
||||
removeAllListeners: function() {
|
||||
for (var i = 0; i < listeners.length; i++) {
|
||||
var details = listeners[i];
|
||||
socket.removeAllListeners(details.event);
|
||||
}
|
||||
|
||||
listeners = [];
|
||||
}
|
||||
};
|
||||
});
|
||||
Loading…
Add table
Add a link
Reference in a new issue