walletdb: fixes and lint.

lib/bcoin/chaindb.js

@@ -1126,10 +1126,13 @@ ChainDB.prototype.scan = function scan(start, filter, iter, callback) {
   var total = 0;
   var i, j, hashes, address, tx, txs;
 
-  if (!start)
+  if (start == null)
     start = this.network.genesis.hash;
 
-  this.logger.info('Scanning from block %s.', utils.revHex(start));
+  if (typeof start === 'number')
+    this.logger.info('Scanning from height %d.', start);
+  else
+    this.logger.info('Scanning from block %s.', utils.revHex(start));
 
   if (Array.isArray(filter))
     filter = utils.toMap(filter);
@@ -1160,7 +1163,7 @@ ChainDB.prototype.scan = function scan(start, filter, iter, callback) {
           return next();
 
         self.logger.info('Scanning block %s (%d).',
-          utils.revHex(hash),
+          utils.revHex(entry.hash),
           block.height);
 
         txs = [];
@@ -1179,12 +1182,12 @@ ChainDB.prototype.scan = function scan(start, filter, iter, callback) {
         }
 
         if (txs.length === 0)
-          return self.getNextHash(hash, next);
+          return self.getNextHash(entry.hash, next);
 
         iter(entry, txs, function(err) {
           if (err)
             return next(err);
-          self.getNextHash(hash, next);
+          self.getNextHash(entry.hash, next);
         });
       });
     });

lib/bcoin/http/server.js

@@ -1024,7 +1024,7 @@ HTTPServer.prototype._initIO = function _initIO() {
       if (typeof callback !== 'function')
         return socket.destroy();
 
-      if (typeof start !== 'string')
+      if (typeof start !== 'string' && !utils.isNumber(start))
         return callback({ error: 'Invalid parameter.' });
 
       try {
@@ -1351,7 +1351,8 @@ ClientSocket.prototype.scan = function scan(start, callback) {
   var self = this;
   var i;
 
-  start = utils.revHex(start);
+  if (typeof start === 'string')
+    start = utils.revHex(start);
 
   this.chain.db.scan(start, this.filter, function(entry, txs, next) {
     for (i = 0; i < txs.length; i++)

lib/bcoin/pool.js

@@ -1796,10 +1796,20 @@ Pool.prototype.getLoaderHost = function getLoaderHost() {
     return this.seeds[0];
 
   host = this.getRandom(this.seeds);
+
   if (host)
     return host;
 
-  return this.getRandom(this.hosts);
+  host = this.getRandom(this.hosts);
+
+  if (host)
+    return host;
+
+  this.logger.warning('All seeds banned or ignored. Clearing...');
+  this.peers.ignored = {};
+  this.peers.misbehaving = {};
+
+  return this.getRandom(this.seeds);
 };
 
 /**
@@ -1815,6 +1825,7 @@ Pool.prototype.getHost = function getHost() {
     return;
 
   host = this.getRandom(this.seeds, true);
+
   if (host)
     return host;
 

lib/bcoin/walletdb.js

@@ -140,6 +140,11 @@ WalletDB.prototype._open = function open(callback) {
             return callback(err);
 
           self.depth = depth;
+
+          self.logger.info(
+            'WalletDB loaded (depth=%d, height=%d).',
+            depth, self.height);
+
           self.loadFilter(callback);
         });
       });
@@ -176,7 +181,7 @@ WalletDB.prototype._close = function close(callback) {
  */
 
 WalletDB.prototype.getDepth = function getDepth(callback) {
-  var opt, iter, parts, depth;
+  var iter, parts, depth;
 
   // This may seem like a strange way to do
   // this, but updating a global state when
@@ -365,6 +370,7 @@ WalletDB.prototype.unregister = function unregister(wallet) {
  */
 
 WalletDB.prototype.getWalletID = function getWalletID(id, callback) {
+  var self = this;
   var wid;
 
   if (!id)
@@ -1172,6 +1178,7 @@ WalletDB.prototype.setTip = function setTip(hash, height, callback) {
  */
 
 WalletDB.prototype.writeBlock = function writeBlock(block, matches, callback) {
+  var self = this;
   var batch = this.db.batch();
   var i, hash, wallets;
 
@@ -1205,6 +1212,7 @@ WalletDB.prototype.writeBlock = function writeBlock(block, matches, callback) {
  */
 
 WalletDB.prototype.unwriteBlock = function unwriteBlock(block, callback) {
+  var self = this;
   var batch = this.db.batch();
   var prev = new WalletBlock(block.prevBlock, block.height - 1);
 
@@ -1252,7 +1260,7 @@ WalletDB.prototype.getWalletsByTX = function getWalletsByTX(hash, callback) {
 
 WalletDB.prototype.addBlock = function addBlock(entry, txs, callback, force) {
   var self = this;
-  var i, block, matches, hash, unlock;
+  var block, matches, hash, unlock;
 
   unlock = this.txLock.lock(addBlock, [entry, txs, callback], force);
 
@@ -1548,8 +1556,6 @@ Path.prototype.toPath = function() {
 
 Path.prototype.toJSON = function toJSON() {
   return {
-    wid: this.wid,
-    id: this.id,
     name: this.name,
     change: this.change === 1,
     path: this.toPath()
@@ -1834,9 +1840,9 @@ WalletBlock.prototype.fromEntry = function fromEntry(entry) {
 
 WalletBlock.prototype.fromJSON = function fromJSON(json) {
   this.hash = utils.revHex(json.hash);
-  this.height = entry.height;
+  this.height = json.height;
-  if (entry.prevBlock)
+  if (json.prevBlock)
-    this.prevBlock = utils.revHex(entry.prevBlock);
+    this.prevBlock = utils.revHex(json.prevBlock);
   return this;
 };
 
@@ -1850,6 +1856,7 @@ WalletBlock.prototype.fromRaw = function fromRaw(hash, data) {
 };
 
 WalletBlock.prototype.fromTip = function fromTip(data) {
+  var p = new BufferReader(data);
   this.hash = p.readHash('hex');
   this.height = p.readU32();
   return this;