Various fixes.

lib/services/block/index.js

@@ -56,13 +56,20 @@ BlockService.prototype.getTip = function() {
 
 BlockService.prototype.getBlock = function(arg, callback) {
 
-  var hash = this._getHash(arg);
+  var self = this;
+  self._getHash(arg, function(err, hash) {
 
-  if (!hash) {
+    if (err) {
-    return callback();
+      return callback(err);
-  }
+    }
+
+    if (!hash) {
+      return callback();
+    }
+
+    self._getBlock(hash, callback);
+  });
 
-  this._getBlock(hash, callback);
 };
 
 BlockService.prototype.getBlockOverview = function(hash, callback) {

lib/services/fee/index.js

@@ -39,11 +39,16 @@ FeeService.prototype.getAPIMethods = function() {
 };
 
 FeeService.prototype.estimateFee = function(blocks, callback) {
-  this._client.estimateFee(blocks || 4, callback);
+  this._client.estimateFee(blocks || 4, function(err, res) {
+    if (err) {
+      return callback(err);
+    }
+    if (!res) {
+      callback();
+    }
+    callback(null, res.result);
+  });
 };
 
-
-
-
 module.exports = FeeService;
 

lib/services/header/index.js

@@ -24,7 +24,7 @@ var HeaderService = function(options) {
 
   this.subscriptions = {};
   this.subscriptions.block = [];
-  this._checkpoint = options.checkpoint || 2000;
+  this._checkpoint = options.checkpoint || 2000; // set to -1 to resync all headers.
   this.GENESIS_HASH = constants.BITCOIN_GENESIS_HASH[this.node.network];
   this._lastHeader = null;
   this.blockServiceSyncing = true;
@@ -61,6 +61,7 @@ HeaderService.prototype.getAPIMethods = function() {
   var methods = [
     ['getAllHeaders', this, this.getAllHeaders, 0],
     ['getBestHeight', this, this.getBestHeight, 0],
+    ['getInfo', this, this.getInfo, 0],
     ['getBlockHeader', this, this.getBlockHeader, 1]
   ];
 
@@ -68,6 +69,27 @@ HeaderService.prototype.getAPIMethods = function() {
 
 };
 
+HeaderService.prototype.getCurrentDifficulty = function() {
+  var target = bcoin.mining.common.getTarget(this._lastHeader.bits);
+  return bcoin.mining.common.getDifficulty(target);
+};
+
+HeaderService.prototype.getInfo = function(callback) {
+  callback(null, {
+    blocks: this._lastHeader.height,
+    connections: this._p2p.getNumberOfPeers(),
+    timeoffset: 0,
+    proxy: '',
+    testnet: this.node.network === 'livenet' ? false: true,
+    errors: '',
+    network: this.node.network,
+    relayFee: 0,
+    version: 'bitcore-1.1.2',
+    protocolversion: 700001,
+    difficulty: this.getCurrentDifficulty()
+  });
+};
+
 HeaderService.prototype.getAllHeaders = function(callback) {
 
   var self = this;
@@ -195,7 +217,6 @@ HeaderService.prototype.stop = function(callback) {
 
 HeaderService.prototype._startHeaderSubscription = function() {
 
-
   this._bus.on('p2p/headers', this._onHeaders.bind(this));
   this._bus.subscribe('p2p/headers');
 
@@ -524,7 +545,7 @@ HeaderService.prototype._onBestHeight = function(height) {
 
 HeaderService.prototype._startSync = function() {
 
-  this._numNeeded = Math.max(this._bestHeight - this._tip.height, this._checkpoint);
+  this._numNeeded = this._bestHeight - this._tip.height;
 
   log.info('Header Service: Gathering: ' + this._numNeeded + ' ' + 'header(s) from the peer-to-peer network.');
 
@@ -594,7 +615,12 @@ HeaderService.prototype._getLastHeader = function(callback) {
 
   var self = this;
 
-  if (self._tip.height > self._checkpoint) {
+  // redo all headers
+  if (this._checkpoint === -1) {
+    this._checkpoint = this._tip.height;
+  }
+
+  if (self._tip.height >= self._checkpoint) {
     self._tip.height -= self._checkpoint;
   }
 

lib/services/p2p/index.js

@@ -23,6 +23,7 @@ var P2P = function(options) {
   this._initPubSub();
   this._bcoin = null;
   this._currentBestHeight = null;
+  this._latestBits = 0x1d00ffff;
 };
 
 util.inherits(P2P, BaseService);
@@ -38,13 +39,16 @@ P2P.prototype.getAPIMethods = function() {
     ['clearInventoryCache', this, this.clearInventoryCache, 0],
     ['getBlocks', this, this.getBlocks, 1],
     ['getHeaders', this, this.getHeaders, 1],
-    ['getInfo', this, this.getInfo, 0],
     ['getMempool', this, this.getMempool, 0],
     ['sendTransaction', this, this.sendTransaction, 1]
   ];
   return methods;
 };
 
+P2P.prototype.getNumberOfPeers = function() {
+  return this._pool.numberConnected;
+};
+
 P2P.prototype.getBlocks = function(filter) {
 
   var peer = this._getPeer();
@@ -61,13 +65,6 @@ P2P.prototype.getHeaders = function(filter) {
 
 };
 
-P2P.prototype.getInfo = function(callback) {
-  callback(null, {
-    blocks: this._getBestHeight(),
-    connections: this._pool.numberConnected
-  });
-};
-
 P2P.prototype.getMempool = function(filter) {
 
   var peer = this._getPeer();

lib/services/timestamp/index.js

@@ -36,7 +36,6 @@ TimestampService.prototype.getBlockHashesByTimestamp = function(high, low, callb
 
   var self = this;
   var result = [];
-  var lastEntry;
 
   var start = self._encoding.encodeTimestampBlockKey(low);
   var end = self._encoding.encodeTimestampBlockKey(high);
@@ -50,9 +49,7 @@ TimestampService.prototype.getBlockHashesByTimestamp = function(high, low, callb
 
   tsStream.on('data', function(data) {
     var value = self._encoding.decodeTimestampBlockValue(data.value);
-    console.log(value);
     result.push(value);
-    lastEntry = value;
   });
 
   var streamErr;
@@ -70,7 +67,7 @@ TimestampService.prototype.getBlockHashesByTimestamp = function(high, low, callb
       return callback();
     }
 
-    return callback(null, result.push(lastEntry));
+    return callback(null, result);
 
   });