better signal handling.

example/index.js

@@ -17,7 +17,7 @@ bitcoind.start(function(err) {
     setTimeout(function() {
       (function next(hash) {
         return bitcoind.getBlock(hash, function(err, block) {
-          if (err) return console.log(err.message);
+          if (err) return print(err.message);
           print(block);
           if (block.tx.length && block.tx[0].txid) {
             var txid = block.tx[0].txid;

lib/bitcoind.js

@@ -32,32 +32,26 @@ Bitcoin.prototype.start = function(callback) {
   var self = this;
 
   var none = {};
+  var isSignal = {};
+  var sigint = { name: 'SIGINT', signal: isSignal };
+  var sighup = { name: 'SIGHUP', signal: isSignal };
+  var sigquit = { name: 'SIGQUIT', signal: isSignal };
   var exitCaught = none;
   var errorCaught = none;
 
   this.log_pipe = bitcoindjs.start(function(err, status) {
-    process.on('SIGINT', function() {
-      if (process.listeners('SIGINT').length > 1) {
-        return;
-      }
-      if (!self._shutdown) {
-        process.exit(0);
-      } else {
-        self.stop();
-        exitCaught = 0;
-      }
-    });
-
-    process.on('SIGHUP', function() {
-      if (process.listeners('SIGHUP').length > 1) {
-        return;
-      }
-      if (!self._shutdown) {
-        process.exit(0);
-      } else {
-        self.stop();
-        exitCaught = 0;
-      }
+    [sigint, sighup, sigquit].forEach(function(signal) {
+      process.on(signal.name, signal.listener = function() {
+        if (process.listeners(signal.name).length > 1) {
+          return;
+        }
+        if (!self._shutdown) {
+          process.exit(0);
+        } else {
+          self.stop();
+          exitCaught = signal;
+        }
+      });
     });
 
     var exit = process.exit;
@@ -115,6 +109,13 @@ Bitcoin.prototype.start = function(callback) {
       delete self._shutdown;
 
       if (exitCaught !== none) {
+        if (exitCaught.signal === isSignal) {
+          process.removeListener(exitCaught.name, exitCaught.listener);
+          setImmediate(function() {
+            process.kill(process.pid, exitCaught.name);
+          });
+          return;
+        }
         return self._exit(exitCaught);
       }