diff --git a/lib/utils/request_status.dart b/lib/utils/request_status.dart
new file mode 100644
index 0000000..dd37f69
--- /dev/null
+++ b/lib/utils/request_status.dart
@@ -0,0 +1,42 @@
+class RequestStatus {
+  final String name;
+
+  const RequestStatus._internal(this.name);
+
+  static const RequestStatus IDLE = const RequestStatus._internal("IDLE");
+  static const RequestStatus WAITING = const RequestStatus._internal("WAITING");
+  static const RequestStatus DONE = const RequestStatus._internal("DONE");
+  static const RequestStatus ERROR = const RequestStatus._internal("ERROR");
+
+  @override
+  String toString() => name;
+}
+
+class RequestObject<T> {
+  T result;
+  dynamic error;
+  RequestStatus status;
+  dynamic tag; //A dynamic value to identify this RequestObject
+
+  RequestObject(this.result, this.status);
+
+  RequestObject.done({this.result, this.tag}) {
+    this.status = RequestStatus.DONE;
+  }
+
+  RequestObject.error({this.error, this.tag}) {
+    this.status = RequestStatus.ERROR;
+  }
+
+  RequestObject.waiting({this.result, this.tag}) {
+    this.status = RequestStatus.WAITING;
+  }
+
+  RequestObject.idle({this.result, this.tag}) {
+    this.status = RequestStatus.IDLE;
+  }
+
+  @override
+  String toString() =>
+      "RequestObject {$status} ${result != null ? "{$result}" : ""}";
+}
diff --git a/pubspec.lock b/pubspec.lock
index 220a641..857b881 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -1,20 +1,34 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  archive:
+    dependency: transitive
+    description:
+      name: archive
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.11"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.5.2"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.2.0"
+    version: "2.4.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "1.0.5"
   charcode:
     dependency: transitive
     description:
@@ -29,6 +43,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.14.11"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.3"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -39,48 +67,62 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  image:
+    dependency: transitive
+    description:
+      name: image
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.4"
   matcher:
     dependency: transitive
     description:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.5"
+    version: "0.12.6"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.6"
+    version: "1.1.8"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.2"
+    version: "1.6.4"
   pedantic:
     dependency: transitive
     description:
       name: pedantic
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.0+1"
+  petitparser:
+    dependency: transitive
+    description:
+      name: petitparser
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.4.0"
   quiver:
     dependency: "direct main"
     description:
       name: quiver
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.3"
+    version: "2.0.5"
   rxdart:
     dependency: "direct main"
     description:
       name: rxdart
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.22.0"
+    version: "0.22.6"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -113,7 +155,7 @@ packages:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "1.0.5"
   term_glyph:
     dependency: transitive
     description:
@@ -127,7 +169,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.5"
+    version: "0.2.11"
   typed_data:
     dependency: transitive
     description:
@@ -142,5 +184,12 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.8"
+  xml:
+    dependency: transitive
+    description:
+      name: xml
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.5.0"
 sdks:
-  dart: ">=2.2.2 <3.0.0"
+  dart: ">=2.4.0 <3.0.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 4c42c39..78f67c3 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: shinayser_essentials_flutter
 description: A new Flutter project.
-version: 1.15.0
+version: 1.16.0
 author:
 homepage:
 
@@ -12,7 +12,7 @@ dependencies:
     sdk: flutter
 
   quiver: '>=2.0.0 <3.0.0'
-  rxdart: ^0.22.0
+  rxdart: ^0.22.6
 
 dev_dependencies:
   flutter_test: