support nullsafety

example/pubspec.lock

@@ -5,30 +5,30 @@ packages:
     dependency: transitive
     description:
       name: characters
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.0"
+    version: "1.1.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.3"
+    version: "1.2.0"
   collection:
     dependency: transitive
     description:
       name: collection
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.14.13"
+    version: "1.15.0"
   dio:
     dependency: "direct main"
     description:
       name: dio
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.0.10"
+    version: "4.0.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -38,16 +38,16 @@ packages:
     dependency: transitive
     description:
       name: http_parser
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.1.4"
+    version: "4.0.0"
   meta:
     dependency: transitive
     description:
       name: meta
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.8"
+    version: "1.3.0"
   network_logger:
     dependency: "direct main"
     description:
@@ -59,9 +59,9 @@ packages:
     dependency: transitive
     description:
       name: path
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.0"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -71,37 +71,37 @@ packages:
     dependency: transitive
     description:
       name: source_span
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.1"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.5"
+    version: "1.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.0"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.0.8"
+    version: "2.1.0"
 sdks:
-  dart: ">=2.9.0-14.0.dev <3.0.0"
-  flutter: ">=1.17.0 <2.0.0"
+  dart: ">=2.12.0 <3.0.0"
+  flutter: ">=2.0.1"

example/pubspec.yaml

@@ -4,13 +4,13 @@ publish_to: 'none'
 version: 1.0.0+1
 
 environment:
-  sdk: ">=2.7.0 <3.0.0"
+  sdk: ">=2.12.0 <3.0.0"
 
 dependencies:
   flutter:
     sdk: flutter
 
-  dio: ^3.0.0
+  dio: ^4.0.0
 
   network_logger:
     path: ..

lib/src/impl/dio.dart

@@ -7,46 +7,52 @@ class DioNetworkLogger extends dio.Interceptor {
   final NetworkEventList eventList;
   final _requests = <dio.RequestOptions, NetworkEvent>{};
 
-  DioNetworkLogger({NetworkEventList eventList})
+  DioNetworkLogger({NetworkEventList? eventList})
       : this.eventList = eventList ?? NetworkLogger.instance;
 
   @override
-  Future onRequest(dio.RequestOptions options) {
+  Future<void> onRequest(
+      dio.RequestOptions options, dio.RequestInterceptorHandler handler) async {
     eventList.add(_requests[options] = NetworkEvent.now(
       request: options.toRequest(),
+      error: null,
+      response: null,
     ));
     return Future.value(options);
   }
 
   @override
-  Future onResponse(dio.Response response) {
-    var event = _requests[response.request];
+  void onResponse(
+    dio.Response response,
+    dio.ResponseInterceptorHandler handler,
+  ) {
+    final req = response.requestOptions.toRequest();
+    var event = _requests[req];
     if (event != null) {
-      _requests.remove(response.request);
+      _requests.remove(req);
       eventList.updated(event..response = response.toResponse());
     } else {
       eventList.add(NetworkEvent.now(
-        request: response.request.toRequest(),
+        request: req,
         response: response.toResponse(),
       ));
     }
-    return Future.value(response);
   }
 
   @override
-  Future onError(dio.DioError err) {
-    var event = _requests[err.request];
+  void onError(dio.DioError err, dio.ErrorInterceptorHandler handler) {
+    final req = err.requestOptions.toRequest();
+    var event = _requests[req];
     if (event != null) {
-      _requests.remove(err.request);
+      _requests.remove(req);
       eventList.updated(event..error = err.toNetworkError());
     } else {
       eventList.add(NetworkEvent.now(
-        request: err.request.toRequest(),
+        request: req,
         response: err.response?.toResponse(),
         error: err.toNetworkError(),
       ));
     }
-    return Future.value(err);
   }
 }
 
@@ -64,8 +70,8 @@ extension _RequestOptionsX on dio.RequestOptions {
 extension _ResponseX on dio.Response {
   Response toResponse() => Response(
         data: data,
-        statusCode: statusCode,
-        statusMessage: statusMessage,
+        statusCode: statusCode ?? -1,
+        statusMessage: statusMessage ?? 'unkown',
         headers: Headers(
           headers.map.entries.fold<List<MapEntry<String, String>>>(
             [],

lib/src/network_event.dart

@@ -1,20 +1,20 @@
 /// Network event log entry.
 class NetworkEvent {
-  NetworkEvent({this.request, this.response, this.error, this.timestamp});
+  NetworkEvent({this.request, this.response,  this.error, this.timestamp});
   NetworkEvent.now({this.request, this.response, this.error})
       : this.timestamp = DateTime.now();
 
-  Request request;
-  Response response;
-  NetworkError error;
-  DateTime timestamp;
+  Request? request;
+  Response? response;
+  NetworkError? error;
+  DateTime? timestamp;
 }
 
 /// Used for storing [Request] and [Response] headers.
 class Headers {
   Headers(Iterable<MapEntry<String, String>> entries)
       : this.entries = entries.toList();
-  Headers.fromMap(Map<String, String> map) : this.entries = map.entries;
+  Headers.fromMap(Map<String, String> map) : this.entries = map.entries as List<MapEntry<String, String>>;
 
   final List<MapEntry<String, String>> entries;
 
@@ -28,9 +28,9 @@ class Headers {
 /// Http request details.
 class Request {
   Request({
-    this.uri,
-    this.method,
-    this.headers,
+    required this.uri,
+    required this.method,
+    required this.headers,
     this.data,
   });
 
@@ -43,9 +43,9 @@ class Request {
 /// Http response details.
 class Response {
   Response({
-    this.headers,
-    this.statusCode,
-    this.statusMessage,
+    required this.headers,
+    required this.statusCode,
+    required this.statusMessage,
     this.data,
   });
 
@@ -57,7 +57,7 @@ class Response {
 
 /// Network error details.
 class NetworkError {
-  NetworkError({this.message});
+  NetworkError({required this.message});
 
   final String message;
 

lib/src/network_logger.dart

@@ -38,7 +38,7 @@ class UpdateEvent {
   const UpdateEvent(this.event);
   const UpdateEvent.clear() : this.event = null;
 
-  final NetworkEvent event;
+  final NetworkEvent? event;
 }
 
 /// Network logger interface.