feat: better errors

- SMB method and params are injected
- synchronously created for better stack traces

lib/tools/message.js

@@ -4,7 +4,7 @@ var bigint = require('./bigint');
 var defaults = {
   successCode: 'STATUS_SUCCESS',
 
-  parse: function(connection, cb) {
+  parse: function(connection, cb, error) {
     var self = this;
 
     return function(response) {
@@ -14,7 +14,7 @@ var defaults = {
         self.onSuccess && self.onSuccess(connection, response);
         cb && cb(null, self.parseResponse && self.parseResponse(response));
       } else {
-        var error = new Error(MsErref.getErrorMessage(err));
+        error.message = MsErref.getErrorMessage(err);
         error.code = err.code;
         cb && cb(error);
       }

lib/tools/smb2-forge.js

@@ -14,13 +14,20 @@ var SMB2Forge = (module.exports = {});
 SMB2Forge.request = function(messageName, params, connection, cb) {
   var msg = require('../messages/' + messageName);
   var smbMessage = msg.generate(connection, params);
+
   // send
   sendNetBiosMessage(connection, smbMessage);
+
+  // create an error container synchroneously for better stacktraces
+  var error = new Error();
+  error.messageName = messageName;
+  error.params = params;
+
   // wait for the response
   getResponse(
     connection,
     smbMessage.getHeaders().MessageId,
-    msg.parse(connection, cb)
+    msg.parse(connection, cb, error)
   );
 };