improve start_node and example.

example/index.js

@@ -27,6 +27,20 @@ bitcoind.on('error', function(err) {
 bitcoind.on('open', function(status) {
   print('status="%s"', status);
 
+  if (!argv.list
+      || !argv.blocks
+      || !argv['on-block']
+      || !argv['on-tx']
+      || !argv.broadcast
+      || !argv['get-tx']) {
+    argv['list'] = true;
+    argv['on-block'] = true;
+    setTimeout(function() {
+      argv['on-block'] = false;
+      print(bitcoind.wallet.listAccounts());
+    }, 5000);
+  }
+
   if (argv.list) {
     print(bitcoind.wallet.listAccounts());
   }
@@ -35,9 +49,11 @@ bitcoind.on('open', function(status) {
     getBlocks(bitcoind);
   }
 
-  // var tx = bitcoind.tx.fromHex(testTx);
-  // console.log(tx);
-  // console.log(tx.txid === tx.getHash('hex'));
+  if (argv['test-tx']) {
+    var tx = bitcoind.tx.fromHex(testTx);
+    console.log(tx);
+    console.log(tx.txid === tx.getHash('hex'));
+  }
 
   function compareObj(obj) {
     // Hash
@@ -64,7 +80,10 @@ bitcoind.on('open', function(status) {
   }
 
   if (argv['on-block']) {
-    bitcoind.on('block', function(block) {
+    bitcoind.on('block', function callee(block) {
+      if (!argv['on-block']) {
+        return bitcoind.removeListener('block', callee);
+      }
       print('Found Block:');
       print(block);
       compareObj(block);

lib/bitcoind.js

@@ -60,9 +60,17 @@ process.on = function(name, listener) {
   return Bitcoin._processOn.apply(this, arguments);
 };
 
-Bitcoin.prototype.start = function(callback) {
+Bitcoin.prototype.start = function(options, callback) {
   var self = this;
 
+  if (!callback) {
+    callback = options;
+    options = {};
+  }
+  if (!callback) {
+    callback = utils.NOOP;
+  }
+
   if (this._startCalled) return;
   this._startCalled = true;
 
@@ -74,7 +82,7 @@ Bitcoin.prototype.start = function(callback) {
   var exitCaught = none;
   var errorCaught = none;
 
-  this.log_pipe = bitcoindjs.start(function(err, status) {
+  this.log_pipe = bitcoindjs.start(options, function(err, status) {
     self._started = true;
 
     [sigint, sighup, sigquit].forEach(function(signal) {

src/bitcoindjs.cc

@@ -427,19 +427,24 @@ NAN_METHOD(StartBitcoind) {
 
   Local<Function> callback;
   std::string datadir = std::string("");
-  if (args.Length() == 2 && args[0]->IsObject() && args[1]->IsFunction()) {
-    Local<Object> options = Local<Object>::Cast(args[0]);
-    String::Utf8Value datadir_(options->Get(NanNew<String>("datadir"))->ToString());
-    datadir = std::string(*datadir_);
-    callback = Local<Function>::Cast(args[1]);
-  } else {
-    if (args.Length() < 1 || !args[0]->IsFunction()) {
-      return NanThrowError(
-        "Usage: bitcoind.start(callback)");
-    }
-    callback = Local<Function>::Cast(args[0]);
-  }
 
+  if (args.Length() >= 2 && args[0]->IsObject() && args[1]->IsFunction()) {
+    Local<Object> options = Local<Object>::Cast(args[0]);
+    if (options->Get(NanNew<String>("datadir"))->IsString()) {
+      String::Utf8Value datadir_(options->Get(NanNew<String>("datadir"))->ToString());
+      datadir = std::string(*datadir_);
+    }
+    callback = Local<Function>::Cast(args[1]);
+  } else if (args.length >= 2
+             && (args[0]->IsUndefined() || args[0]->IsNull())
+             && args[1]->IsFunction()) {
+    callback = Local<Function>::Cast(args[1]);
+  } else if (args.length >= 1 && args[0]->IsFunction()) {
+    callback = Local<Function>::Cast(args[0]);
+  } else {
+    return NanThrowError(
+      "Usage: bitcoind.start(callback)");
+  }
 
   //
   // Run bitcoind's StartNode() on a separate thread.