browser: add dns resolution.

browser/index.js

@@ -178,7 +178,7 @@ function formatWallet(wallet) {
     html += 'Current Address: <b>' + wallet.getAddress() + '</b><br>';
   }
 
-  html += 'Extended Private Key: <b>' + key.toBase58() + '</b><br>';
+  html += 'Extended Private Key: <b>' + key.xprivkey + '</b><br>';
   html += 'Mnemonic: <b>' + key.mnemonic.phrase + '</b><br>';
 
   wallet.getBalance().then(function(balance) {
@@ -215,7 +215,7 @@ options = bcoin.config({
   network: 'segnet4',
   db: 'leveldb',
   useWorkers: true,
-  coinCache: true,
+  coinCache: 30000000,
   logger: logger
 });
 

browser/wsproxy.js

@@ -1,12 +1,15 @@
 'use strict';
 
 var net = require('net');
+var dns = require('dns');
 var IOServer = require('socket.io');
 var util = require('../lib/utils/util');
 var IP = require('../lib/utils/ip');
 var BufferWriter = require('../lib/utils/writer');
 var EventEmitter = require('events').EventEmitter;
 
+var NAME_REGEX = /^[a-z0-9\-\.]+?\.(?:be|me|org|com|net|ch|de)$/i;
+
 var TARGET = new Buffer(
   '0000ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff',
   'hex');
@@ -61,6 +64,41 @@ WSProxy.prototype._handleSocket = function _handleSocket(ws) {
   ws.on('tcp connect', function(port, host, nonce) {
     self._handleConnect(ws, port, host, nonce);
   });
+
+  ws.on('dns resolve', function(name, record, callback) {
+    self._handleResolve(ws, name, record, callback);
+  });
+};
+
+WSProxy.prototype._handleResolve = function _handleResolve(ws, name, record, callback) {
+  if (typeof name !== 'string') {
+    ws.disconnect();
+    return;
+  }
+
+  if (typeof record !== 'string') {
+    ws.disconnect();
+    return;
+  }
+
+  if (typeof callback !== 'function') {
+    ws.disconnect();
+    return;
+  }
+
+  if (!NAME_REGEX.test(name) || name.length > 200) {
+    this.log('Client sent a bad domain: %s.', name);
+    ws.disconnect();
+    return;
+  }
+
+  dns.resolve(name, record, function(err, result) {
+    if (err) {
+      callback({ message: err.message, code: err.code });
+      return;
+    }
+    callback(null, result);
+  });
 };
 
 WSProxy.prototype._handleConnect = function _handleConnect(ws, port, host, nonce) {
@@ -84,7 +122,7 @@ WSProxy.prototype._handleConnect = function _handleConnect(ws, port, host, nonce
 
   if (this.pow) {
     if (!util.isNumber(nonce)) {
-      this.log('Client did not solve proof of work.', state.host);
+      this.log('Client did not solve proof of work (%s).', state.host);
       ws.emit('tcp close');
       ws.disconnect();
       return;

lib/net/dns-browser.js

@@ -6,6 +6,26 @@
 
 'use strict';
 
-exports.resolve = function resolve(host) {
-  return Promise.reject(new Error('No DNS results.'));
+var ProxySocket = require('./proxysocket');
+var socket;
+
+exports.resolve = function resolve(host, proxy) {
+  return new Promise(function(resolve, reject) {
+    if (!socket)
+      socket = new ProxySocket(proxy);
+
+    socket.resolve(host, 'A', function(err, result) {
+      if (err) {
+        reject(err);
+        return;
+      }
+
+      if (result.length === 0) {
+        reject(new Error('No DNS results.'));
+        return;
+      }
+
+      resolve(result);
+    });
+  });
 };

lib/net/index.js

@@ -10,4 +10,3 @@ exports.Peer = require('./peer');
 exports.Pool = require('./pool');
 exports.tcp = require('./tcp');
 exports.dns = require('./dns');
-exports.time = require('./time');

lib/net/pool.js

@@ -2166,6 +2166,7 @@ function HostList(pool) {
   this.network = pool.network;
   this.logger = pool.logger;
   this.maxOutbound = pool.maxOutbound;
+  this.proxyServer = pool.proxyServer;
   this.list = new List();
   this.seeds = [];
   this.map = {};
@@ -2381,7 +2382,7 @@ HostList.prototype.populate = co(function* populate(seed) {
   this.logger.info('Resolving hosts from seed: %s.', seed.host);
 
   try {
-    hosts = yield dns.resolve(seed.host);
+    hosts = yield dns.resolve(seed.host, this.proxyServer);
   } catch (e) {
     this.logger.error(e);
     return;

lib/net/proxysocket.js

@@ -92,6 +92,19 @@ ProxySocket.prototype._init = function _init() {
   });
 };
 
+ProxySocket.prototype.resolve = function resolve(name, record, callback) {
+  var e;
+  this.socket.emit('dns resolve', name, record, function(err, results) {
+    if (err) {
+      e = new Error(err.message);
+      e.code = err.code || null;
+      callback(e);
+      return;
+    }
+    callback(null, results);
+  });
+};
+
 ProxySocket.prototype.connect = function connect(port, host) {
   var nonce = 0;
   var i, pow;
@@ -104,8 +117,10 @@ ProxySocket.prototype.connect = function connect(port, host) {
     return;
   }
 
-  if (!this.info)
-    return this.once('info', connect.bind(this, port, host));
+  if (!this.info) {
+    this.once('info', connect.bind(this, port, host));
+    return;
+  }
 
   if (this.info.pow) {
     util.log(

lib/protocol/index.js

@@ -3,3 +3,4 @@
 exports.constants = require('./constants');
 exports.networks = require('./networks');
 exports.Network = require('./network');
+exports.timedata = require('./timedata');

lib/utils/index.js

@@ -12,6 +12,7 @@ exports.lazy = require('./lazy');
 exports.Locker = require('./locker');
 exports.MappedLocker = exports.Locker.Mapped;
 exports.LRU = require('./lru');
+exports.List = require('./list');
 exports.murmur3 = require('./murmur3');
 exports.nextTick = require('./nexttick');
 exports.nfkd = require('./nfkd');