Update _processMqttMessage method

.gitignore

@@ -0,0 +1,12 @@
+# See https://www.dartlang.org/tools/private-files.html
+
+# Files and directories created by pub
+.packages
+.pub/
+build/
+# If you're building an application, you may want to check-in your pubspec.lock
+pubspec.lock
+
+# Directory created by dartdoc
+# If you don't generate documentation locally you can remove this line.
+doc/api/

lib/mqtt_client.dart

@@ -190,7 +190,8 @@ class MqttClient<E extends VirtualMqttConnection> {
     * 
     * Return the data that has not been processed
     */
-   List<int> _processMqttMessage(data) {
+   List<int> _processMqttMessage(ByteBuffer details) {
+     var data = details.asInt8List();
      num type = data[0] >> 4;
      int msgProcessedLength = data.length; 
 

lib/mqtt_shared.dart

@@ -5,6 +5,7 @@ import 'mqtt_version_v3.dart' ;
 import "package:ini/ini.dart";
 import 'dart:io';
 import 'dart:convert';
+import 'dart:typed_data';
 
 part 'mqtt_client.dart';
 part 'mqtt_connection_shared.dart';