2014-06-16 14:41:33 -07:00
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'use strict';
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2014-04-08 14:35:43 -07:00
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var imports = require('soop').imports();
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var EventEmitter= imports.EventEmitter || require('events').EventEmitter;
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2014-04-23 09:44:20 -07:00
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var bitcore = require('bitcore');
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var util = bitcore.util;
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2014-05-22 19:28:26 -07:00
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var extend = require('util')._extend;
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2014-04-08 22:20:28 -07:00
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/*
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* Emits
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2014-05-09 10:35:57 -07:00
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* 'connect'
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2014-04-08 22:20:28 -07:00
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* when network layout has change (new/lost peers, etc)
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*
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* 'data'
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* when an unknown data type arrives
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*
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* Provides
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* send(toPeerIds, {data}, cb?)
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*
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*/
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2014-04-08 14:35:43 -07:00
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2014-04-14 11:31:10 -07:00
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function Network(opts) {
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2014-04-30 08:58:40 -07:00
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var self = this;
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2014-04-24 19:13:55 -07:00
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opts = opts || {};
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this.apiKey = opts.apiKey || 'lwjd5qra8257b9';
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this.debug = opts.debug || 3;
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this.maxPeers = opts.maxPeers || 10;
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this.reconnectAttempts = opts.reconnectAttempts || 3;
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this.sjclParams = opts.sjclParams || {
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salt: 'f28bfb49ef70573c',
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iter:500,
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mode:'ccm',
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ts:parseInt(64),
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};
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2014-05-05 11:54:17 -07:00
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this.opts = {};
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2014-06-10 06:06:08 -07:00
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['config', 'port', 'host', 'path', 'debug', 'key', 'secure'].forEach(function(k) {
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if (opts.hasOwnProperty(k)) self.opts[k] = opts[k];
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2014-04-17 12:58:07 -07:00
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});
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2014-04-24 19:13:55 -07:00
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this.cleanUp();
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2014-04-08 14:35:43 -07:00
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}
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2014-04-23 17:20:44 -07:00
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Network.parent = EventEmitter;
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2014-04-08 14:35:43 -07:00
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2014-04-24 19:13:55 -07:00
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Network.prototype.cleanUp = function() {
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this.started = false;
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this.connectedPeers = [];
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this.peerId = null;
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2014-06-08 12:59:48 -07:00
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//this.netKey = null;
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this.privkey = null; //TODO: hide privkey in a closure
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this.copayerId = null;
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this.signingKey = null;
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this.allowedCopayerIds=null;
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this.isInboundPeerAuth=[];
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this.copayerForPeer={};
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this.connections={};
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this.criticalErr='';
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if (this.peer) {
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this.peer.disconnect();
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this.peer.destroy();
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this.peer.removeAllListeners();
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this.peer = null;
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}
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this.closing = 0;
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this.tries = 0;
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};
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Network.parent=EventEmitter;
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// Array helpers
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Network._arrayDiff = function(a, b) {
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var seen = [];
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var diff = [];
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for (var i = 0; i < b.length; i++)
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seen[b[i]] = true;
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for (var j = 0; j < a.length; j++)
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if (!seen[a[j]])
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diff.push(a[j]);
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return diff;
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};
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Network._inArray = function(el, array) {
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return array.indexOf(el) > -1;
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};
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2014-04-14 11:31:10 -07:00
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Network._arrayPushOnce = function(el, array) {
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var ret = false;
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if (!Network._inArray(el, array)) {
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array.push(el);
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ret = true;
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}
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return ret;
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};
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2014-04-14 11:31:10 -07:00
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Network._arrayRemove = function(el, array) {
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var pos = array.indexOf(el);
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if (pos >= 0) array.splice(pos, 1);
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return array;
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};
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2014-04-23 09:44:20 -07:00
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Network.prototype.connectedCopayers = function() {
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var ret =[];
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for(var i in this.connectedPeers){
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var copayerId =this.copayerForPeer[this.connectedPeers[i]];
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if (copayerId) ret.push(copayerId);
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}
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return ret;
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};
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2014-04-24 19:13:55 -07:00
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Network.prototype._deletePeer = function(peerId) {
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2014-05-01 17:48:17 -07:00
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delete this.isInboundPeerAuth[peerId];
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2014-05-01 12:40:25 -07:00
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delete this.copayerForPeer[peerId];
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2014-04-24 19:13:55 -07:00
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if (this.connections[peerId]) {
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this.connections[peerId].close();
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}
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delete this.connections[peerId];
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this.connectedPeers = Network._arrayRemove(peerId, this.connectedPeers);
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2014-04-24 19:13:55 -07:00
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};
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2014-05-09 10:44:05 -07:00
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Network.prototype._onClose = function(peerID) {
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this._deletePeer(peerID);
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this.emit('disconnect', peerID);
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};
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2014-05-01 17:48:17 -07:00
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Network.prototype.connectToCopayers = function(copayerIds) {
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var self = this;
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var arrayDiff= Network._arrayDiff(copayerIds, this.connectedCopayers());
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2014-05-01 12:40:25 -07:00
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2014-04-23 12:02:23 -07:00
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arrayDiff.forEach(function(copayerId) {
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if (this.allowedCopayerIds && !this.allowedCopayerIds[copayerId]) {
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this._deletePeer(this.peerFromCopayer(copayerId));
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} else {
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self.connectTo(copayerId);
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}
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});
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};
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2014-04-23 18:43:17 -07:00
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Network.prototype._sendHello = function(copayerId) {
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this.send(copayerId, {
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type: 'hello',
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copayerId: this.copayerId,
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});
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};
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2014-05-01 17:48:17 -07:00
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Network.prototype._addConnectedCopayer = function(copayerId, isInbound) {
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2014-04-23 12:02:23 -07:00
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var peerId = this.peerFromCopayer(copayerId);
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this._addCopayerMap(peerId,copayerId);
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Network._arrayPushOnce(peerId, this.connectedPeers);
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2014-05-09 11:02:57 -07:00
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this.emit('connect', copayerId);
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2014-04-23 09:44:20 -07:00
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};
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2014-06-08 12:59:48 -07:00
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Network.prototype._onData = function(enchex, isInbound, peerId) {
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var sig, payload;
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var encbuf = new Buffer(enchex, 'hex');
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var privkey = this.privkey;
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2014-04-25 13:36:00 -07:00
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2014-04-09 07:05:25 -07:00
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try {
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var data = this._decrypt(privkey, encbuf);
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payload= JSON.parse(data);
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} catch (e) {
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this._deletePeer(peerId);
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2014-04-09 07:05:25 -07:00
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return;
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2014-04-25 13:36:00 -07:00
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}
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2014-04-23 18:43:17 -07:00
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2014-05-01 17:48:17 -07:00
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if(isInbound && payload.type === 'hello') {
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2014-05-01 12:40:25 -07:00
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var payloadStr = JSON.stringify(payload);
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if (this.allowedCopayerIds && !this.allowedCopayerIds[payload.copayerId]) {
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this._deletePeer(peerId);
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return;
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2014-04-23 18:43:17 -07:00
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}
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2014-05-01 12:40:25 -07:00
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2014-05-01 17:48:17 -07:00
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this._addConnectedCopayer(payload.copayerId, isInbound);
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this._setInboundPeerAuth(peerId, true);
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2014-04-23 18:43:17 -07:00
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return;
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2014-04-23 09:44:20 -07:00
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}
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2014-04-08 14:35:43 -07:00
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2014-05-01 17:48:17 -07:00
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if ( !this.copayerForPeer[peerId] || (isInbound && !this.isInboundPeerAuth[peerId]) ) {
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2014-04-24 19:13:55 -07:00
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this._deletePeer(peerId);
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2014-04-23 09:44:20 -07:00
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return;
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}
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2014-04-23 18:43:17 -07:00
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2014-04-24 19:13:55 -07:00
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var self=this;
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2014-04-23 18:43:17 -07:00
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switch(payload.type) {
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2014-04-08 14:35:43 -07:00
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case 'disconnect':
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2014-04-23 18:43:17 -07:00
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this._onClose(peerId);
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2014-04-08 22:20:28 -07:00
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break;
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default:
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2014-04-23 18:43:17 -07:00
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this.emit('data', self.copayerForPeer[peerId], payload, isInbound);
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2014-04-08 14:35:43 -07:00
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}
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};
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2014-06-07 15:12:24 -07:00
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Network.prototype._checkAnyPeer = function(msg) {
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2014-04-24 19:13:55 -07:00
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if (this.connectedPeers.length === 1) {
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this.emit('onlyYou');
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}
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};
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2014-04-17 12:50:48 -07:00
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2014-05-01 17:48:17 -07:00
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Network.prototype._setupConnectionHandlers = function(dataConn, toCopayerId) {
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2014-04-23 17:20:44 -07:00
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var self = this;
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2014-04-08 14:35:43 -07:00
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2014-05-01 17:48:17 -07:00
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var isInbound = toCopayerId ? false : true;
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2014-04-08 14:35:43 -07:00
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dataConn.on('open', function() {
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2014-05-01 17:48:17 -07:00
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if (!Network._inArray(dataConn.peer, self.connectedPeers) &&
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!self.connections[dataConn.peer]) {
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2014-04-23 12:02:23 -07:00
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2014-04-20 16:24:24 -07:00
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self.connections[dataConn.peer] = dataConn;
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2014-04-08 14:35:43 -07:00
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2014-04-28 11:02:24 -07:00
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// The connecting peer send hello
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2014-05-01 17:48:17 -07:00
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if(toCopayerId) {
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2014-05-19 16:47:28 -07:00
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self.emit('connected');
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2014-05-01 17:48:17 -07:00
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self._sendHello(toCopayerId);
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2014-05-09 11:02:57 -07:00
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self._addConnectedCopayer(toCopayerId);
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2014-05-01 17:48:17 -07:00
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}
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2014-04-08 14:35:43 -07:00
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}
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});
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dataConn.on('data', function(data) {
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self._onData(data, isInbound, dataConn.peer);
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2014-04-08 14:35:43 -07:00
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});
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dataConn.on('error', function(e) {
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2014-04-20 16:24:24 -07:00
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self._onClose(dataConn.peer);
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self._checkAnyPeer();
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2014-04-17 12:50:48 -07:00
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self.emit('dataError');
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2014-04-08 14:35:43 -07:00
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});
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dataConn.on('close', function() {
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2014-04-12 09:37:41 -07:00
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if (self.closing) return;
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2014-04-20 16:24:24 -07:00
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2014-04-08 14:35:43 -07:00
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self._onClose(dataConn.peer);
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2014-04-17 12:50:48 -07:00
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self._checkAnyPeer();
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2014-04-08 14:35:43 -07:00
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});
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};
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2014-04-14 11:31:10 -07:00
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Network.prototype._setupPeerHandlers = function(openCallback) {
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var self = this;
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2014-04-08 14:35:43 -07:00
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var p = this.peer;
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2014-04-20 08:41:28 -07:00
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p.on('open', function() {
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self.connectedPeers = [self.peerId];
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2014-04-23 12:02:23 -07:00
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self.copayerForPeer[self.peerId]= self.copayerId;
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2014-04-20 08:41:28 -07:00
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return openCallback();
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2014-04-08 14:35:43 -07:00
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});
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p.on('error', function(err) {
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2014-06-07 15:12:24 -07:00
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console.log('RECV ERROR: ', err); //TODO
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if (!err.message.match(/Could\snot\sconnect\sto peer/) ) {
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self.criticalError=err.message;
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2014-04-24 12:35:52 -07:00
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}
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2014-04-08 14:35:43 -07:00
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});
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2014-04-24 13:54:43 -07:00
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p.on('connection', function(dataConn) {
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2014-04-09 07:05:25 -07:00
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if (self.connectedPeers.length >= self.maxPeers) {
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dataConn.on('open', function() {
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dataConn.close();
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});
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2014-04-23 17:20:44 -07:00
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} else {
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2014-05-01 17:48:17 -07:00
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self._setInboundPeerAuth(dataConn.peer, false);
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self._setupConnectionHandlers(dataConn);
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2014-04-09 07:05:25 -07:00
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}
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2014-04-08 14:35:43 -07:00
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});
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};
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2014-04-23 12:02:23 -07:00
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Network.prototype._addCopayerMap = function(peerId, copayerId) {
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if (!this.copayerForPeer[peerId]) {
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2014-04-24 19:13:55 -07:00
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if(Object.keys(this.copayerForPeer).length < this.maxPeers) {
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this.copayerForPeer[peerId]=copayerId;
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}
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else {
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}
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2014-04-23 12:02:23 -07:00
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}
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};
|
|
|
|
|
2014-04-24 19:13:55 -07:00
|
|
|
|
2014-05-01 17:48:17 -07:00
|
|
|
Network.prototype._setInboundPeerAuth = function(peerId, isAuthenticated) {
|
|
|
|
this.isInboundPeerAuth[peerId] = isAuthenticated;
|
2014-04-24 19:13:55 -07:00
|
|
|
};
|
|
|
|
|
2014-04-23 09:44:20 -07:00
|
|
|
Network.prototype.setCopayerId = function(copayerId) {
|
2014-04-20 08:41:28 -07:00
|
|
|
if (this.started) {
|
2014-04-23 17:20:44 -07:00
|
|
|
throw new Error('network already started: can not change peerId')
|
2014-04-20 08:41:28 -07:00
|
|
|
}
|
2014-04-23 09:44:20 -07:00
|
|
|
this.copayerId = copayerId;
|
2014-04-23 18:43:17 -07:00
|
|
|
this.copayerIdBuf = new Buffer(copayerId,'hex');
|
2014-04-23 09:44:20 -07:00
|
|
|
this.peerId = this.peerFromCopayer(this.copayerId);
|
2014-04-23 12:02:23 -07:00
|
|
|
this._addCopayerMap(this.peerId,copayerId);
|
2014-04-20 08:41:28 -07:00
|
|
|
};
|
|
|
|
|
2014-04-23 18:43:17 -07:00
|
|
|
|
2014-06-03 07:54:07 -07:00
|
|
|
// TODO cache this.
|
2014-04-23 09:44:20 -07:00
|
|
|
Network.prototype.peerFromCopayer = function(hex) {
|
2014-04-24 19:13:55 -07:00
|
|
|
var SIN = bitcore.SIN;
|
|
|
|
return new SIN(new Buffer(hex,'hex')).toString();
|
2014-04-23 09:44:20 -07:00
|
|
|
};
|
2014-04-20 08:41:28 -07:00
|
|
|
|
2014-04-23 18:43:17 -07:00
|
|
|
Network.prototype.start = function(opts, openCallback) {
|
2014-04-18 14:25:51 -07:00
|
|
|
opts = opts || {};
|
2014-04-24 19:13:55 -07:00
|
|
|
|
|
|
|
if (this.started) return openCallback();
|
|
|
|
|
2014-06-08 12:59:48 -07:00
|
|
|
//this.netKey = opts.netKey;
|
|
|
|
this.privkey = opts.privkey;
|
2014-04-24 19:13:55 -07:00
|
|
|
this.maxPeers = opts.maxPeers || this.maxPeers;
|
2014-04-16 18:12:30 -07:00
|
|
|
|
2014-05-22 19:28:26 -07:00
|
|
|
if (opts.token)
|
|
|
|
this.opts.token = opts.token;
|
|
|
|
|
2014-04-24 12:35:52 -07:00
|
|
|
if (!this.copayerId)
|
2014-04-23 18:43:17 -07:00
|
|
|
this.setCopayerId(opts.copayerId);
|
2014-04-23 09:44:20 -07:00
|
|
|
|
2014-06-06 08:30:50 -07:00
|
|
|
var self = this;
|
|
|
|
var setupPeer = function () {
|
|
|
|
if (self.connectedPeers.length > 0) return; // Already connected!
|
|
|
|
if (self.peer) {
|
|
|
|
self.peer.destroy();
|
|
|
|
self.peer.removeAllListeners();
|
|
|
|
}
|
|
|
|
|
2014-06-07 15:12:24 -07:00
|
|
|
if (!self.criticalError && self.tries < self.reconnectAttempts) {
|
2014-06-06 08:30:50 -07:00
|
|
|
self.tries++;
|
|
|
|
self.peer = new Peer(self.peerId, self.opts);
|
|
|
|
self.started = true;
|
|
|
|
self._setupPeerHandlers(openCallback);
|
|
|
|
setTimeout(setupPeer, 3000); // Schedule retry
|
|
|
|
return;
|
|
|
|
}
|
2014-06-07 15:12:24 -07:00
|
|
|
if (self.criticalError && self.criticalError.match(/taken/)) {
|
|
|
|
self.criticalError=' Looks like you are already connected to this wallet please close all other Copay Wallets '
|
|
|
|
}
|
|
|
|
self.emit('serverError', self.criticalError);
|
2014-06-06 08:30:50 -07:00
|
|
|
self.cleanUp();
|
|
|
|
}
|
|
|
|
|
|
|
|
this.tries = 0;
|
|
|
|
setupPeer();
|
|
|
|
};
|
2014-04-23 09:44:20 -07:00
|
|
|
|
2014-04-24 12:07:49 -07:00
|
|
|
Network.prototype.getOnlinePeerIDs = function() {
|
|
|
|
return this.connectedPeers;
|
|
|
|
};
|
|
|
|
|
|
|
|
Network.prototype.getPeer = function() {
|
|
|
|
return this.peer;
|
2014-04-23 18:43:17 -07:00
|
|
|
};
|
|
|
|
|
2014-06-08 12:59:48 -07:00
|
|
|
Network.prototype._encrypt = function(pubkey, payload) {
|
|
|
|
var encrypted = bitcore.ECIES.encrypt(pubkey, payload);
|
|
|
|
return encrypted;
|
|
|
|
|
|
|
|
/*
|
2014-04-29 15:51:49 -07:00
|
|
|
var plainText = sjcl.codec.utf8String.toBits(payloadStr);
|
2014-04-30 08:58:40 -07:00
|
|
|
var p = this.sjclParams;
|
|
|
|
ct = sjcl.encrypt(this.netKey, plainText, p);//,p, rp);
|
2014-04-29 15:51:49 -07:00
|
|
|
var c = JSON.parse(ct);
|
|
|
|
var toSend = {
|
|
|
|
iv: c.iv,
|
|
|
|
ct: c.ct,
|
|
|
|
};
|
|
|
|
return JSON.stringify(toSend);
|
2014-06-08 12:59:48 -07:00
|
|
|
*/
|
2014-04-29 15:51:49 -07:00
|
|
|
};
|
|
|
|
|
|
|
|
|
2014-06-08 12:59:48 -07:00
|
|
|
Network.prototype._decrypt = function(privkey, encrypted) {
|
|
|
|
var decrypted = bitcore.ECIES.decrypt(privkey, encrypted);
|
|
|
|
return decrypted;
|
|
|
|
|
|
|
|
/*
|
2014-04-29 15:51:49 -07:00
|
|
|
var i = JSON.parse(encStr);
|
|
|
|
for (var k in this.sjclParams) {
|
|
|
|
i[k] = this.sjclParams[k];
|
|
|
|
}
|
|
|
|
var str= JSON.stringify(i);
|
2014-04-30 08:58:40 -07:00
|
|
|
var pt = sjcl.decrypt(this.netKey, str);
|
2014-04-29 15:51:49 -07:00
|
|
|
return pt;
|
2014-06-08 12:59:48 -07:00
|
|
|
*/
|
2014-04-29 15:51:49 -07:00
|
|
|
};
|
2014-04-25 13:36:00 -07:00
|
|
|
|
2014-04-30 09:02:40 -07:00
|
|
|
Network.prototype._sendToOne = function(copayerId, payload, sig, cb) {
|
2014-04-23 09:44:20 -07:00
|
|
|
var peerId = this.peerFromCopayer(copayerId);
|
2014-04-08 14:35:43 -07:00
|
|
|
if (peerId !== this.peerId) {
|
2014-04-20 16:24:24 -07:00
|
|
|
var dataConn = this.connections[peerId];
|
|
|
|
if (dataConn) {
|
2014-04-30 09:02:40 -07:00
|
|
|
dataConn.send(payload);
|
2014-04-20 16:24:24 -07:00
|
|
|
}
|
2014-04-08 14:35:43 -07:00
|
|
|
}
|
|
|
|
if (typeof cb === 'function') cb();
|
|
|
|
};
|
|
|
|
|
2014-04-23 18:43:17 -07:00
|
|
|
Network.prototype.send = function(copayerIds, payload, cb) {
|
2014-06-08 12:59:48 -07:00
|
|
|
//if (!payload || !this.netKey) return cb();
|
|
|
|
if (!payload) return cb();
|
2014-06-09 13:37:06 -07:00
|
|
|
|
2014-04-08 14:35:43 -07:00
|
|
|
var self=this;
|
2014-04-23 09:44:20 -07:00
|
|
|
if (!copayerIds) {
|
|
|
|
copayerIds = this.connectedCopayers();
|
2014-04-23 18:43:17 -07:00
|
|
|
payload.isBroadcast = 1;
|
2014-04-08 22:20:28 -07:00
|
|
|
}
|
|
|
|
|
2014-04-24 19:13:55 -07:00
|
|
|
var sig;
|
2014-04-25 13:36:00 -07:00
|
|
|
var payloadStr = JSON.stringify(payload);
|
2014-06-08 12:59:48 -07:00
|
|
|
var payloadBuf = new Buffer(payloadStr);
|
|
|
|
//var encPayload = this._encrypt(payloadStr);
|
2014-04-23 09:44:20 -07:00
|
|
|
if (Array.isArray(copayerIds)) {
|
|
|
|
var l = copayerIds.length;
|
2014-04-08 14:35:43 -07:00
|
|
|
var i = 0;
|
2014-04-23 09:44:20 -07:00
|
|
|
copayerIds.forEach(function(copayerId) {
|
2014-06-08 12:59:48 -07:00
|
|
|
var copayerIdBuf = new Buffer(copayerId, 'hex');
|
|
|
|
var encPayload = self._encrypt(copayerIdBuf, payloadBuf);
|
2014-04-30 09:02:40 -07:00
|
|
|
self._sendToOne(copayerId, encPayload, sig, function () {
|
2014-04-08 14:35:43 -07:00
|
|
|
if (++i === l && typeof cb === 'function') cb();
|
|
|
|
});
|
|
|
|
});
|
|
|
|
}
|
2014-04-23 09:44:20 -07:00
|
|
|
else if (typeof copayerIds === 'string')
|
2014-04-30 09:02:40 -07:00
|
|
|
self._sendToOne(copayerIds, encPayload, sig, cb);
|
2014-04-08 14:35:43 -07:00
|
|
|
};
|
|
|
|
|
2014-05-01 17:48:17 -07:00
|
|
|
|
2014-06-03 07:54:07 -07:00
|
|
|
Network.prototype.isOnline = function() {
|
|
|
|
return !!this.peer;
|
|
|
|
};
|
|
|
|
|
2014-04-23 09:44:20 -07:00
|
|
|
Network.prototype.connectTo = function(copayerId) {
|
2014-04-08 14:35:43 -07:00
|
|
|
var self = this;
|
2014-04-23 12:02:23 -07:00
|
|
|
|
2014-05-01 17:48:17 -07:00
|
|
|
var peerId = this.peerFromCopayer(copayerId);
|
2014-04-08 14:35:43 -07:00
|
|
|
var dataConn = this.peer.connect(peerId, {
|
|
|
|
serialization: 'none',
|
|
|
|
reliable: true,
|
|
|
|
});
|
2014-05-01 17:48:17 -07:00
|
|
|
self._setupConnectionHandlers(dataConn, copayerId);
|
2014-04-08 14:35:43 -07:00
|
|
|
};
|
|
|
|
|
2014-04-24 19:13:55 -07:00
|
|
|
Network.prototype.lockIncommingConnections = function(allowedCopayerIdsArray) {
|
|
|
|
this.allowedCopayerIds={};
|
|
|
|
for(var i in allowedCopayerIdsArray) {
|
2014-05-09 11:02:57 -07:00
|
|
|
this.allowedCopayerIds[ allowedCopayerIdsArray[i] ] = true;
|
2014-04-24 12:35:52 -07:00
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2014-04-18 14:25:51 -07:00
|
|
|
Network.prototype.disconnect = function(cb, forced) {
|
2014-04-08 14:35:43 -07:00
|
|
|
var self = this;
|
2014-04-12 09:37:41 -07:00
|
|
|
self.closing = 1;
|
2014-04-24 13:54:43 -07:00
|
|
|
self.send(null, { type: 'disconnect' }, function(){
|
2014-04-24 19:13:55 -07:00
|
|
|
self.cleanUp();
|
2014-04-24 13:54:43 -07:00
|
|
|
if (typeof cb === 'function') cb();
|
|
|
|
});
|
2014-04-08 14:35:43 -07:00
|
|
|
};
|
|
|
|
|
2014-04-14 11:31:10 -07:00
|
|
|
module.exports = require('soop')(Network);
|