* making embedded bcoin sync persistent

* correctly shutdown embedded bcoin instance
* wait until bcoin is listening on P2P before trying to connect
* align bcoin port and peer port

lib/services/p2p/bcoin.js

@@ -10,7 +10,7 @@ var Bcoin = function(options) {
   this.emitter = new EE();
 };
 
-Bcoin.prototype.start = function() {
+Bcoin.prototype.start = function(callback) {
   var self = this;
   self._bcoin = bcoin.fullnode(self._config);
 
@@ -18,8 +18,11 @@ Bcoin.prototype.start = function() {
 
   self._bcoin.open().then(function() {
     self._bcoin.connect().then(function() {
-      self.emitter.emit('connect');
       self._bcoin.startSync();
+      log.info('Waiting for Bcoin to sync');
+      self._bcoin.pool.once('listening', function() {
+        callback();
+      });
     });
   });
 };
@@ -34,16 +37,20 @@ Bcoin.prototype.stop = function() {
 
 Bcoin.prototype._getConfig = function(options) {
   var config = {
+    db: 'leveldb',
     checkpoints: true,
     network: options.network || 'main',
-    listen: true
+    listen: true,
+    logConsole: true,
+    logLevel: 'info',
+    port: options.port,
+    persistent: true,
+    loader: require,
+    workers: true
   };
   if (options.prefix) {
     config.prefix = options.prefix;
   }
-  if (options.logLevel) {
-    config.logLevel = options.logLevel;
-  }
   return config;
 };
 

lib/services/p2p/index.js

@@ -19,7 +19,6 @@ var P2P = function(options) {
   BaseService.call(this, options);
   this._options = options;
 
-  this._startBcoinIfNecessary();
   this._initP2P();
   this._initPubSub();
   this._bcoin = null;
@@ -109,13 +108,13 @@ P2P.prototype.sendTransaction = function(tx) {
 
 
 P2P.prototype.start = function(callback) {
-
   var self = this;
-  self._initCache();
-  self._initPool();
-  this._setListeners();
-  callback();
-
+  self._startBcoinIfNecessary(function(){
+    self._initCache();
+    self._initPool();
+    self._setListeners();
+    callback();
+  });
 };
 
 P2P.prototype._disconnectPool = function() {
@@ -126,6 +125,9 @@ P2P.prototype._disconnectPool = function() {
 };
 
 P2P.prototype.stop = function(callback) {
+  if (this._bcoin){
+    return this._bcoin.stop(callback);
+  }
   setImmediate(callback);
 };
 
@@ -168,10 +170,17 @@ P2P.prototype._broadcast = function(subscribers, name, entity) {
 };
 
 P2P.prototype._connect = function() {
-  this._connectCalled = this._connectCalled > 0 ? 2 : 1;
-  if (this._connectCalled > 1 || !this._bcoin) {
+  var self = this;
+  self._connectCalled = self._connectCalled > 0 ? 2 : 1;
+  if(self._connectCalled > 1 || !self._bcoin) {
     log.info('Connecting to p2p network.');
-    this._pool.connect();
+    self._pool.connect();
+    var retryInterval = setInterval(function() {
+      self._pool.connect();
+    }, 5000);
+    self._pool.once('peerready', function() {
+      clearInterval(retryInterval);
+    });
   }
 };
 
@@ -181,7 +190,7 @@ P2P.prototype._getBestHeight = function() {
     return 0;
   }
 
-  var maxHeight = 0;
+  var maxHeight = -1;
   for(var i = 0; i < this._peers.length; i++) {
     if (this._peers[i].bestHeight > maxHeight) {
       maxHeight = this._peers[i].bestHeight;
@@ -298,7 +307,6 @@ P2P.prototype._removePeer = function(peer) {
 };
 
 P2P.prototype._setListeners = function() {
-
   var self = this;
   self.node.on('stopping', self._disconnectPool.bind(self));
   self._pool.on('peerready', self._onPeerReady.bind(self));
@@ -307,11 +315,9 @@ P2P.prototype._setListeners = function() {
   self._pool.on('peertx', self._onPeerTx.bind(self));
   self._pool.on('peerblock', self._onPeerBlock.bind(self));
   self._pool.on('peerheaders', self._onPeerHeaders.bind(self));
-  self.node.on('ready', self._connect.bind(self));
-  if (self._bcoin) {
-    self._bcoin.emitter.once('connect', self._connect.bind(self));
+  if (!self._bcoin) {
+    self.node.on('ready', self._connect.bind(self));
   }
-
 };
 
 P2P.prototype._setResourceFilter = function(filter, resource) {
@@ -331,21 +337,24 @@ P2P.prototype._setResourceFilter = function(filter, resource) {
 
 };
 
-P2P.prototype._startBcoin = function() {
+P2P.prototype._startBcoin = function(callback) {
+  var self = this;
   const network = ['livenet', 'live', 'main', 'mainnet'].indexOf(this.node.network) !== -1? 'main' : 'testnet';
-  this._bcoin = new Bcoin({
+  self._bcoin = new Bcoin({
     network: network,
-    prefix: this.node.datadir
+    prefix: self.node.datadir,
+    port: 48333
   });
-  this._bcoin.start();
+  self._bcoin.start(callback);
 };
 
-P2P.prototype._startBcoinIfNecessary = function() {
+P2P.prototype._startBcoinIfNecessary = function(callback) {
   if (!this._hasPeers()) {
     log.info('Peers not explicitly configured, starting a local bcoin node.');
-    this._startBcoin();
-    this._options.peers = [{ ip: { v4: '127.0.0.1' }, port: 48444}];
+    this._configPeers = [{ip: {v4: '127.0.0.1'}, port: 48333}];
+    return this._startBcoin(callback);
   }
+  setImmediate(callback);
 };
 
 module.exports = P2P;