### Initialize DioHttpCache Example Application

Source: https://pub.dev/packages/dio_http_cache/example

The main entry point for the example app, setting up the MaterialApp and a stateful widget to switch between different cache demonstration panels.

```dart
import 'package:flutter/material.dart';

import 'panels/cache_manage.dart';
import 'panels/panel_204.dart';
import 'panels/panel_get.dart';
import 'panels/panel_get_bytes.dart';
import 'panels/panel_get_from_service.dart';
import 'panels/panel_post.dart';
import 'tuple.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final title = "DioHttpCache Example";
    return MaterialApp(
        title: title,
        theme: ThemeData(primarySwatch: Colors.blue),
        home: MyHomePage(title: title));
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, this.title}) : super(key: key);
  final String? title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

enum Panel { CACHE_MANAGER, POST, POST_204, GET_FROM_SERVICE, GET, GET_BYTES }

class _MyHomePageState extends State<MyHomePage> {
  Panel panel = Panel.POST;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
            title: Text(widget.title!),
            actions: <Widget>[_buildHomePageActionButtons(context)]),
        body: getPanel());
  }

  Widget? getPanel() {
    switch (panel) {
      case Panel.CACHE_MANAGER:
        return CacheManagerPanel();
      case Panel.GET:
        return GetPanel();
      case Panel.POST:
        return PostPanel();
      case Panel.POST_204:
        return Post204Panel();
      case Panel.GET_FROM_SERVICE:
        return PostGetLetServicePanel();
      case Panel.GET_BYTES:
        return GetBytesPanel();
    }
  }

  Widget _buildHomePageActionButtons(BuildContext context) {
    List<Pair<String, Function()>> choices = [
      Pair("Cache Manager", () => setState(() => panel = Panel.CACHE_MANAGER)),
      Pair("POST", () => setState(() => panel = Panel.POST)),
      Pair("POST 204", () => setState(() => panel = Panel.POST_204)),
      Pair("GET", () => setState(() => panel = Panel.GET)),
      Pair("GET from service",
          () => setState(() => panel = Panel.GET_FROM_SERVICE)),
      Pair("GET byte array", () => setState(() => panel = Panel.GET_BYTES)),
    ];
    return PopupMenuButton<Pair<String, Function()>>(
        onSelected: (p) => p.i1!(),
        child: Padding(
            padding: EdgeInsets.all(10),
            child: Icon(Icons.menu, color: Colors.white)),
        itemBuilder: (BuildContext context) => choices
            .map((choice) => PopupMenuItem<Pair<String, Function()>>(
                value: choice, child: Text(choice.i0!)))
            .toList());
  }
}
```

--------------------------------

### Install ObjectBox Native Library

Source: https://pub.dev/packages/dio_cache_interceptor_objectbox_store

Run this command on your host machine to install the native ObjectBox library required for running unit tests.

```bash
bash <(curl -s https://raw.githubusercontent.com/objectbox/objectbox-dart/main/install.sh)
```

--------------------------------

### Install diox_http2_adapter

Source: https://pub.dev/packages/diox_http2_adapter

Add the dependency to your pubspec.yaml file.

```yaml
dependencies:
  diox_http2_adapter: ^2.0.0 # latest version
```

--------------------------------

### Initialize Dio with Http2Adapter

Source: https://pub.dev/packages/dio_http2_adapter

Basic setup for integrating the Http2Adapter into a Dio instance.

```dart
import 'package:dio/dio.dart';
import 'package:dio_http2_adapter/dio_http2_adapter.dart';

void main() async {
  final dio = Dio()
    ..options.baseUrl = 'https://pub.dev'
    ..interceptors.add(LogInterceptor())
    ..httpClientAdapter = Http2Adapter(
      ConnectionManager(idleTimeout: Duration(seconds: 10)),
    );

  Response<String> response;
  response = await dio.get('/?xx=6');
  for (final e in response.redirects) {
    print('redirect: ${e.statusCode} ${e.location}');
  }
  print(response.data);
}
```

--------------------------------

### Perform GET requests with Dio

Source: https://pub.dev/packages/diox

Demonstrates how to perform GET requests using direct URL parameters or the queryParameters map.

```dart
import 'package:diox/diox.dart';

final dio = Dio();

void request() async {
  Response response;
  response = await dio.get('/test?id=12&name=dio');
  print(response.data.toString());
  // The below request is the same as above.
  response = await dio.get(
    '/test',
    queryParameters: {'id': 12, 'name': 'dio'},
  );
  print(response.data.toString());
}
```

--------------------------------

### GET Request Response

Source: https://pub.dev/packages/dio

Example of performing a GET request and accessing the properties of the returned Response object.

```APIDOC
## GET Request

### Description
Performs a GET request and demonstrates how to access the response data, headers, request options, and status code.

### Request Example
```dart
final response = await dio.get('https://pub.dev');
print(response.data);
print(response.headers);
print(response.requestOptions);
print(response.statusCode);
```

### Response Properties
- **data** (T?) - The response body, potentially transformed.
- **requestOptions** (RequestOptions) - The corresponding request configuration.
- **statusCode** (int?) - The HTTP status code.
- **statusMessage** (String?) - The reason phrase associated with the status code.
- **isRedirect** (bool) - Indicates if the response is a redirect.
- **redirects** (List<RedirectRecord>) - The series of redirects followed.
- **extra** (Map<String, dynamic>) - Custom fields specific to the Response.
- **headers** (Headers) - The response headers.
```

--------------------------------

### Perform a basic HTTP GET request with Dio

Source: https://pub.dev/packages/dio/example

Initializes a Dio instance and performs a GET request to a specified URL.

```dart
import 'package:dio/dio.dart';

/// More examples see https://github.com/cfug/dio/tree/main/dio#examples
void main() async {
  final dio = Dio();
  final response = await dio.get('https://pub.dev');
  print(response.data);
}
```

--------------------------------

### Install diox_cookie_manager

Source: https://pub.dev/packages/diox_cookie_manager

Add the dependency to your pubspec.yaml file.

```yaml
dependencies:
  diox_cookie_manager: ^2.0.0 # latest version
```

--------------------------------

### Perform a basic HTTP request

Source: https://pub.dev/packages/diox

Example of using the request method to send data with specific options.

```dart
final response = await dio.request(
  '/test',
  data: {'id': 12, 'name': 'dio'},
  options: Options(method: 'GET'),
);
```

--------------------------------

### Install diox_flutter_transformer

Source: https://pub.dev/packages/diox_flutter_transformer

Add the package to your pubspec.yaml dependencies.

```yaml
dependencies:
  diox_flutter_transformer: ^1.0.1 # latest version
```

--------------------------------

### Install dio_http_cache via command line

Source: https://pub.dev/packages/dio_http_cache/install

Use this command in your terminal to add the package to your Flutter project.

```bash
$ flutter pub add dio_http_cache
```

--------------------------------

### Access response data

Source: https://pub.dev/packages/diox

Example of retrieving information from a successful GET request.

```dart
final response = await dio.get('https://pub.dev');
print(response.data);
print(response.headers);
print(response.requestOptions);
print(response.statusCode);
```

--------------------------------

### Perform GET requests with query parameters

Source: https://pub.dev/packages/dio

Demonstrates two ways to pass query parameters: directly in the URL string or via the queryParameters map.

```dart
import 'package:dio/dio.dart';

final dio = Dio();

void request() async {
  Response response;
  response = await dio.get('/test?id=12&name=dio');
  print(response.data.toString());
  // The below request is the same as above.
  response = await dio.get(
    '/test',
    queryParameters: {'id': 12, 'name': 'dio'},
  );
  print(response.data.toString());
}
```

--------------------------------

### Static Analysis: pubspec.yaml Warning

Source: https://pub.dev/packages/dio_http_cache/score

Example of a warning regarding the deprecated 'authors' field in the pubspec.yaml file.

```yaml
  ╷
4 │ authors:
  │ ^^^^^^^
  ╵
```

--------------------------------

### Flutter Persistent Storage Setup

Source: https://pub.dev/packages/diox_cookie_manager

Configure PersistCookieJar with a valid file path using path_provider in a Flutter application.

```dart
Future<void> prepareJar() async {
  final Directory appDocDir = await getApplicationDocumentsDirectory();
  final String appDocPath = appDocDir.path;
  final jar = PersistCookieJar(
    ignoreExpires: true,
    storage: FileStorage(appDocPath +"/.cookies/" ),
  );
  dio.interceptors.add(CookieManager(jar));
}
```

--------------------------------

### Static Analysis: typedef Syntax Info

Source: https://pub.dev/packages/dio_http_cache/score

Example of an informational message regarding the use of generic function type syntax in typedefs.

```dart
  ╷
3 │ typedef Future<List<int>> Encrypt(List<int> str);
  │                           ^^^^^^^
  ╵
```

--------------------------------

### Create and configure a Dio instance

Source: https://pub.dev/packages/diox

Demonstrates initializing Dio with default options or a custom BaseOptions object.

```dart
final dio = Dio(); // With default `Options`.

void configureDio() {
  // Set default configs
  dio.options.baseUrl = 'https://api.pub.dev';
  dio.options.connectTimeout = Duration(seconds: 5);
  dio.options.receiveTimeout = Duration(seconds: 3);

  // Or create `Dio` with a `BaseOptions` instance.
  final options = BaseOptions(
    baseUrl: 'https://api.pub.dev',
    connectTimeout: Duration(seconds: 5),
    receiveTimeout: Duration(seconds: 3),
  );
  final anotherDio = Dio(options);
}
```

--------------------------------

### Configure Dio Instance

Source: https://pub.dev/packages/dio

Demonstrates creating a Dio instance with default settings, configuring options post-initialization, and cloning existing instances.

```dart
final dio = Dio(); // With default `Options`.

void configureDio() {
  // Set default configs
  dio.options.baseUrl = 'https://api.pub.dev';
  dio.options.connectTimeout = Duration(seconds: 5);
  dio.options.receiveTimeout = Duration(seconds: 3);

  // Or create `Dio` with a `BaseOptions` instance.
  final options = BaseOptions(
    baseUrl: 'https://api.pub.dev',
    connectTimeout: Duration(seconds: 5),
    receiveTimeout: Duration(seconds: 3),
  );
  final anotherDio = Dio(options);

  // Or clone the existing `Dio` instance with all fields.
  final clonedDio = dio.clone();
}
```

--------------------------------

### Instantiate HttpClientAdapter

Source: https://pub.dev/packages/diox/changelog

Use this syntax to instantiate a platform-independent HTTP client adapter.

```dart
dio.httpClientAdapter = HttpClientAdapter();
```

--------------------------------

### Configure Dio with Http2Adapter

Source: https://pub.dev/packages/dio_http2_adapter/example

Initializes a Dio instance with the Http2Adapter and a custom ConnectionManager. Ensure the dio and dio_http2_adapter packages are imported.

```dart
import 'package:dio/dio.dart';
import 'package:dio_http2_adapter/dio_http2_adapter.dart';

void main() async {
  final dio = Dio()
    ..options.baseUrl = 'https://pub.dev'
    ..interceptors.add(LogInterceptor())
    ..httpClientAdapter = Http2Adapter(
      ConnectionManager(idleTimeout: const Duration(seconds: 10)),
    );

  Response<String> response;
  response = await dio.get('/?xx=6');
  for (final e in response.redirects) {
    print('redirect: ${e.statusCode} ${e.location}');
  }
  print(response.data);
}
```

--------------------------------

### Configure a custom Dio client

Source: https://pub.dev/packages/dio_image_provider

Demonstrates how to set a global Dio instance or provide a specific instance via the constructor.

```dart
// Either by setting it globally
DioImage.defaultDio = Dio();

// or by supplying it via constructor
Image(
  image: DioImage(
    Uri.parse('https://http.cat/200'),
    dio: Dio(),
  ),
)
```

--------------------------------

### Dio()

Source: https://pub.dev/packages/dio/versions/5.10.0

Initializes a new Dio instance with optional BaseOptions for global configuration such as baseUrl, connectTimeout, and receiveTimeout.

```APIDOC
## Dio Constructor

### Description
Creates a new instance of the Dio HTTP client. It is recommended to use a singleton instance to manage configurations consistently.

### Usage
```dart
final dio = Dio();
final options = BaseOptions(baseUrl: 'https://api.pub.dev', connectTimeout: Duration(seconds: 5));
final anotherDio = Dio(options);
```
```

--------------------------------

### Basic Cookie Management with Dio

Source: https://pub.dev/packages/dio_cookie_manager/example

Demonstrates how to initialize a CookieJar and add it to Dio's interceptors to automatically manage cookies across requests.

```dart
import 'package:cookie_jar/cookie_jar.dart';
import 'package:dio/dio.dart';
import 'package:dio_cookie_manager/dio_cookie_manager.dart';

void main() async {
  final dio = Dio();
  final cookieJar = CookieJar();
  dio.interceptors.add(CookieManager(cookieJar));
  await dio.get('https://baidu.com/');
  // Print cookies
  print(cookieJar.loadForRequest(Uri.parse('https://baidu.com/')));
  // second request with the cookie
  await dio.get('https://baidu.com/');
}
```

--------------------------------

### Configure Proxy with IOHttpClientAdapter

Source: https://pub.dev/packages/dio

Uses the createHttpClient callback to define a proxy for native platform requests.

```dart
import 'package:dio/io.dart';

void initAdapter() {
  dio.httpClientAdapter = IOHttpClientAdapter(
    createHttpClient: () {
      final client = HttpClient();
      // Config the client.
      client.findProxy = (uri) {
        // Forward all request to proxy "localhost:8888".
        // Be aware, the proxy should went through you running device,
        // not the host platform.
        return 'PROXY localhost:8888';
      };
      // You can also create a new HttpClient for Dio instead of returning,
      // but a client must being returned here.
      return client;
    },
  );
}
```

--------------------------------

### Initialize DioCacheInterceptor in Flutter

Source: https://pub.dev/packages/dio_cache_interceptor/example

Demonstrates setting up the Dio client with cache options and a memory-based cache store in a StatefulWidget.

```dart
// import 'dart:io';
import 'dart:ui';

import 'package:dio/dio.dart';
import 'package:dio_cache_interceptor/dio_cache_interceptor.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
// import 'package:path_provider/path_provider.dart' as pp;
import 'caller.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();

  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<StatefulWidget> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  late CacheStore cacheStore;
  late CacheOptions cacheOptions;
  late Dio dio;
  late Caller caller;

  @override
  void initState() {
    cacheStore = MemCacheStore(maxSize: 10485760, maxEntrySize: 1048576);
    cacheOptions = CacheOptions(
      store: cacheStore,
      hitCacheOnNetworkFailure: true, // for offline behaviour
    );

    dio = Dio()..interceptors.add(DioCacheInterceptor(options: cacheOptions));

    // or

    // pp.getTemporaryDirectory().then((dir) {
    //   cacheStore = FileCacheStore(dir.path);

    //   // or

    //   cacheStore = DbCacheStore(databasePath: dir.path, logStatements: true);
    //   cacheStore = HiveCacheStore(dir.path);

    //   cacheOptions = CacheOptions(
    //     store: cacheStore,
    //     hitCacheOnErrorExcept: [], // for offline behaviour
    //   );

    //   dio = Dio()
    //     ..interceptors.add(
    //       DioCacheInterceptor(options: cacheOptions),
    //     );
    // });

    caller = Caller(
      cacheStore: cacheStore,
      cacheOptions: cacheOptions,
      dio: dio,
    );

    super.initState();
  }

  @override
  void dispose() async {
    dio.close();
    await cacheStore.close();
    return super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Dio cache interceptor',
      home: DefaultTabController(
        length: 3,
        child: Scaffold(
          appBar: AppBar(
            title: const Text('Dio cache interceptor'),
            bottom: const TabBar(
              tabs: [
                Tab(
                  child: Text('With server cache', textAlign: TextAlign.center),
                ),
                Tab(
                  child: Text(
                    'Without server cache',
                    textAlign: TextAlign.center,
                  ),
                ),
                Tab(child: Text('Image')),
              ],
            ),
          ),
          body: TabBarView(
            children: [
              _WithCacheTab(caller),
              _WithoutCacheTab(caller),
              _ImageCacheTab(caller),
            ],
          ),
        ),
      ),
    );
  }
}

class _WithCacheTab extends StatefulWidget {
  const _WithCacheTab(this.caller);

  final Caller caller;

  @override
  _WithCacheTabState createState() => _WithCacheTabState();
}

class _WithCacheTabState extends State<_WithCacheTab> {
  String text = '';
  final url = 'https://www.wikipedia.org';
```

--------------------------------

### Configure and use DioCacheInterceptor

Source: https://pub.dev/packages/dio_cache_interceptor

Demonstrates how to initialize global CacheOptions, add the interceptor to a Dio instance, and perform cached requests with policy overrides.

```dart
import 'package:dio_cache_interceptor/dio_cache_interceptor.dart';

// Global options
final options = const CacheOptions(
  // A default store is required for interceptor.
  store: MemCacheStore(),

  // All subsequent fields are optional to get a standard behaviour.
  
  // Default.
  policy: CachePolicy.request,
  // Returns a cached response on error for given status codes.
  // Defaults to `[]`.
  hitCacheOnErrorCodes: [500],
  // Allows to return a cached response on network errors (e.g. offline usage).
  // Defaults to `false`.
  hitCacheOnNetworkFailure: true,
  // Overrides any HTTP directive to delete entry past this duration.
  // Useful only when origin server has no cache config or custom behaviour is desired.
  // Defaults to `null`.
  maxStale: const Duration(days: 7),
  // Default. Allows 3 cache sets and ease cleanup.
  priority: CachePriority.normal,
  // Default. Body and headers encryption with your own algorithm.
  cipher: null,
  // Default. Key builder to retrieve requests.
  keyBuilder: CacheOptions.defaultCacheKeyBuilder,
  // Default. Allows to cache POST requests.
  // Assigning a [keyBuilder] is strongly recommended when `true`.
  allowPostMethod: false,
);

// Add cache interceptor with global/default options
final dio = Dio()..interceptors.add(DioCacheInterceptor(options: options));

// ...

// Requesting with global options => status(200) => Content is written to cache store.
var response = await dio.get('https://www.foo.com');
// Requesting with global options => status(304 => 200) => Content is read from cache store.
response = await dio.get('https://www.foo.com');

// Requesting by modifying policy with refresh option
// for this single request => status(200) => Content is written to cache store.
response = await dio.get('https://www.foo.com',
  options: options.copyWith(policy: CachePolicy.refresh).toOptions(),
);
```

--------------------------------

### Handle DioException errors

Source: https://pub.dev/packages/dio

Use a try-catch block to handle DioException. Check the response property to distinguish between server-side errors and request setup issues.

```dart
try {
  // 404
  await dio.get('https://api.pub.dev/not-exist');
} on DioException catch (e) {
  // The request was made and the server responded with a status code
  // that falls out of the range of 2xx and is also not 304.
  if (e.response != null) {
    print(e.response.data)
    print(e.response.headers)
    print(e.response.requestOptions)
  } else {
    // Something happened in setting up or sending the request that triggered an Error
    print(e.requestOptions)
    print(e.message)
  }
}
```

--------------------------------

### Initialize ObjectBoxCacheStore with Dio

Source: https://pub.dev/packages/dio_cache_interceptor_objectbox_store/example

Configures the ObjectBox cache store using a temporary directory and adds it to the Dio interceptor chain.

```dart
import 'package:dio/dio.dart';
import 'package:dio_cache_interceptor/dio_cache_interceptor.dart';
import 'package:dio_cache_interceptor_objectbox_store/dio_cache_interceptor_objectbox_store.dart';
import 'package:path_provider/path_provider.dart';

void main(List<String> arguments) {
  // Full example is available at
  // https://github.com/llfbandit/dio_cache_interceptor/blob/master/dio_cache_interceptor/example/lib/main.dart

  late CacheStore cacheStore;

  getTemporaryDirectory().then((dir) {
    cacheStore = ObjectBoxCacheStore(storePath: dir.path);

    var cacheOptions = CacheOptions(
      store: cacheStore,
      hitCacheOnErrorExcept: [], // for offline behaviour
    );

    final dio = Dio()
      ..interceptors.add(
        DioCacheInterceptor(options: cacheOptions),
      );

    dio.get('https://www.foo.com');
  });
}
```

--------------------------------

### Configure Dio for Web

Source: https://pub.dev/packages/dio_web_adapter/example

Sets up the Dio client to use the BrowserHttpClientAdapter, which is required for web-specific HTTP requests.

```dart
import 'package:dio/dio.dart';
import 'package:dio_web_adapter/dio_web_adapter.dart';

void main() {
  final dio = Dio();
  dio.httpClientAdapter = BrowserHttpClientAdapter(withCredentials: true);
  dio.interceptors.add(LogInterceptor());
  dio.get('https://httpbun.com/status/200');
}
```

--------------------------------

### Analyze browser adapter code

Source: https://pub.dev/packages/diox/score

Command to run static analysis on the browser adapter file to identify deprecated imports.

```bash
dart analyze lib/src/adapters/browser_adapter.dart
```

--------------------------------

### Add dependency via command line

Source: https://pub.dev/packages/dio_cache_interceptor_isar_store/install

Use these commands to add the package to your project using the Dart or Flutter CLI.

```bash
$ dart pub add dio_cache_interceptor_isar_store
```

```bash
$ flutter pub add dio_cache_interceptor_isar_store
```

--------------------------------

### Initialize HiveCacheStore with Dio

Source: https://pub.dev/packages/dio_cache_interceptor_hive_store/example

Configures a Hive-based cache store using a temporary directory and adds it to the Dio interceptor chain.

```dart
import 'package:dio/dio.dart';
import 'package:dio_cache_interceptor/dio_cache_interceptor.dart';
import 'package:dio_cache_interceptor_hive_store/dio_cache_interceptor_hive_store.dart';
import 'package:path_provider/path_provider.dart';

void main(List<String> arguments) {
  // Full example is available at
  // https://github.com/llfbandit/dio_cache_interceptor/blob/master/dio_cache_interceptor/example/lib/main.dart

  late CacheStore cacheStore;

  getTemporaryDirectory().then((dir) {
    cacheStore = HiveCacheStore(dir.path);

    var cacheOptions = CacheOptions(
      store: cacheStore,
      hitCacheOnErrorExcept: [], // for offline behaviour
    );

    final dio = Dio()
      ..interceptors.add(
        DioCacheInterceptor(options: cacheOptions),
      );

    dio.get('https://www.foo.com');
  });
}
```

--------------------------------

### Initialize DbCacheStore with Dio

Source: https://pub.dev/packages/dio_cache_interceptor_db_store/example

Configures a Dio instance to use the DbCacheStore for persistent caching, requiring a valid directory path for the database file.

```dart
import 'package:dio/dio.dart';
import 'package:dio_cache_interceptor/dio_cache_interceptor.dart';
import 'package:dio_cache_interceptor_db_store/dio_cache_interceptor_db_store.dart';
import 'package:path_provider/path_provider.dart';

void main(List<String> arguments) {
  // Full example is available at
  // https://github.com/llfbandit/dio_cache_interceptor/blob/master/dio_cache_interceptor/example/lib/main.dart

  late CacheStore cacheStore;

  getTemporaryDirectory().then((dir) {
    cacheStore = DbCacheStore(databasePath: dir.path, logStatements: true);

    var cacheOptions = CacheOptions(
      store: cacheStore,
      hitCacheOnErrorExcept: [], // for offline behaviour
    );

    final dio = Dio()
      ..interceptors.add(
        DioCacheInterceptor(options: cacheOptions),
      );

    dio.get('https://www.foo.com');
  });
}
```

--------------------------------

### Add dependency via command line

Source: https://pub.dev/packages/diox/install

Use these commands to add the diox package to your project dependencies.

```bash
$ dart pub add diox
```

```bash
$ flutter pub add diox
```

--------------------------------

### Analyze compute utility code

Source: https://pub.dev/packages/diox/score

Command to run static analysis on the compute utility file to identify documentation issues.

```bash
dart analyze lib/src/compute/compute.dart
```

--------------------------------

### Add dependency via command line

Source: https://pub.dev/packages/dio_cache_interceptor_db_store/install

Use these commands to add the package to your project dependencies automatically.

```bash
$ dart pub add dio_cache_interceptor_db_store
```

```bash
$ flutter pub add dio_cache_interceptor_db_store
```

--------------------------------

### Add dependency via command line

Source: https://pub.dev/packages/dio_cache_interceptor/install

Use these commands to add the package to your project dependencies automatically.

```bash
$ dart pub add dio_cache_interceptor
```

```bash
$ flutter pub add dio_cache_interceptor
```

--------------------------------

### Add dependency via command line

Source: https://pub.dev/packages/dio_cache_interceptor_file_store/install

Use these commands to add the package to your project dependencies automatically.

```bash
$ dart pub add dio_cache_interceptor_file_store
```

```bash
$ flutter pub add dio_cache_interceptor_file_store
```

--------------------------------

### Initialize SembastCacheStore with Dio

Source: https://pub.dev/packages/dio_cache_interceptor_sembast_storage/example

Configures a Dio instance to use Sembast for caching by providing a store path via path_provider.

```dart
import 'package:dio/dio.dart';
import 'package:dio_cache_interceptor/dio_cache_interceptor.dart';
import 'package:dio_cache_interceptor_sembast_store/dio_cache_interceptor_sembast_store.dart';
import 'package:path_provider/path_provider.dart';

void main(List<String> arguments) {
  // Full example is available at
  // https://github.com/llfbandit/dio_cache_interceptor/blob/master/dio_cache_interceptor/example/lib/main.dart

  late CacheStore cacheStore;

  getTemporaryDirectory().then((dir) {
    cacheStore = SembastCacheStore(storePath: dir.path);

    var cacheOptions = CacheOptions(
      store: cacheStore,
      hitCacheOnErrorExcept: [], // for offline behaviour
    );

    final dio = Dio()
      ..interceptors.add(
        DioCacheInterceptor(options: cacheOptions),
      );

    dio.get('https://www.foo.com');
  });
}
```

--------------------------------

### Initialize FileCacheStore with Dio

Source: https://pub.dev/packages/dio_cache_interceptor_file_store/example

Configures a Dio instance to use FileCacheStore for caching requests in the application's temporary directory.

```dart
import 'package:dio/dio.dart';
import 'package:dio_cache_interceptor/dio_cache_interceptor.dart';
import 'package:dio_cache_interceptor_file_store/dio_cache_interceptor_file_store.dart';
import 'package:path_provider/path_provider.dart';

void main(List<String> arguments) {
  // Full example is available at
  // https://github.com/llfbandit/dio_cache_interceptor/blob/master/dio_cache_interceptor/example/lib/main.dart

  late CacheStore cacheStore;

  getTemporaryDirectory().then((dir) {
    cacheStore = FileCacheStore(dir.path);

    var cacheOptions = CacheOptions(
      store: cacheStore,
      hitCacheOnErrorExcept: [], // for offline behaviour
    );

    final dio = Dio()
      ..interceptors.add(
        DioCacheInterceptor(options: cacheOptions),
      );

    dio.get('https://www.foo.com');
  });
}
```

--------------------------------

### Check package dependencies

Source: https://pub.dev/packages/diox/score

Command to check for outdated dependencies in the package.

```bash
dart pub outdated --no-dev-dependencies --up-to-date --no-dependency-overrides
```

--------------------------------

### Implement a Custom Dio Client

Source: https://pub.dev/packages/diox

Use the DioMixin to implement a custom Dio client when direct extension is not suitable.

```dart
class MyDio with DioMixin implements Dio {
  // ...
}
```

--------------------------------

### Apache License 2.0

Source: https://pub.dev/packages/dio_http_cache

Standard Apache License 2.0 text for the package.

```text
Copyright 2019 Hurshi

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
```

--------------------------------

### Import the library

Source: https://pub.dev/packages/diox/install

Include this import statement in your Dart files to access the diox API.

```dart
import 'package:diox/diox.dart';
```

--------------------------------

### Import the library

Source: https://pub.dev/packages/dio_cache_interceptor/install

Include this statement in your Dart files to access the package functionality.

```dart
import 'package:dio_cache_interceptor/dio_cache_interceptor.dart';
```

--------------------------------

### Configure Proxy for IOHttpClientAdapter

Source: https://pub.dev/packages/diox

Uses the onHttpClientCreate callback to route requests through a specific proxy server.

```dart
void initAdapter() {
  dio.httpClientAdapter = IOHttpClientAdapter()..onHttpClientCreate = (client) {
    // Config the client.
    client.findProxy = (uri) {
      // Forward all request to proxy "localhost:8888".
      return 'PROXY localhost:8888';
    };
    // You can also create a new HttpClient for Dio instead of returning,
    // but a client must being returned here.
    return client;
  };
}
```

--------------------------------

### Add dio dependency via command line

Source: https://pub.dev/packages/dio/install

Use these commands to automatically add the latest version of dio to your project dependencies.

```bash
$ dart pub add dio
```

```bash
$ flutter pub add dio
```

--------------------------------

### Basic Usage of CookieManager

Source: https://pub.dev/packages/diox_cookie_manager

Initialize a CookieJar and add the CookieManager interceptor to your Diox instance.

```dart
import 'package:cookie_jar/cookie_jar.dart';
import 'package:diox/diox.dart';
import 'package:diox_cookie_manager/diox_cookie_manager.dart';

void main() async {
  final dio =  Dio();
  final cookieJar = CookieJar();
  dio.interceptors.add(CookieManager(cookieJar));
  // First request, and save cookies (CookieManager do it).
  await dio.get("https://dart.dev");
  // Print cookies
  print(await cookieJar.loadForRequest(Uri.parse("https://dart.dev")));
  // Second request with the cookies
  await dio.get('https://dart.dev');
}
```

--------------------------------

### Configure Platform-Specific HttpClientAdapters

Source: https://pub.dev/packages/dio

Explicitly set the adapter for Web or native platforms using specific imports.

```dart
import 'package:dio/browser.dart';
// ...
dio.httpClientAdapter = BrowserHttpClientAdapter();
```

```dart
import 'package:dio/io.dart';
// ...
dio.httpClientAdapter = IOHttpClientAdapter();
```

--------------------------------

### Configure RetryInterceptor with Dio

Source: https://pub.dev/packages/dio_smart_retry/example

Initializes the Dio client and adds the RetryInterceptor with custom retry counts and delay intervals.

```dart
import 'dart:async';

import 'package:dio/dio.dart';
import 'package:dio_smart_retry/dio_smart_retry.dart';

Future<dynamic> main() async {
  final dio = Dio();
  // Add the interceptor
  dio.interceptors.add(
    RetryInterceptor(
      dio: dio,
      logPrint: print, // specify log function (optional)
      retries: 4, // retry count (optional)
      retryDelays: const [
        // set delays between retries (optional)
        Duration(seconds: 1), // wait 1 sec before the first retry
        Duration(seconds: 2), // wait 2 sec before the second retry
        Duration(seconds: 3), // wait 3 sec before the third retry
        Duration(seconds: 4), // wait 4 sec before the fourth retry
      ],
    ),
  );

  /// Sending a failing request for 4 times from 1s to 4s
  await dio.get<dynamic>('https://mock.codes/500');
}
```

--------------------------------

### Using application/x-www-form-urlencoded

Source: https://pub.dev/packages/dio/versions/5.10.0

Explains how to send request data using the application/x-www-form-urlencoded format instead of the default JSON serialization.

```APIDOC
## Using application/x-www-form-urlencoded

### Description
By default, Dio serializes data to JSON. You can override this to use application/x-www-form-urlencoded either globally or per request.

### Example
```dart
// Per request example
dio.post(
  '/info',
  data: {'id': 5},
  options: Options(contentType: Headers.formUrlEncodedContentType),
);
```
```

--------------------------------

### Configure application/x-www-form-urlencoded format

Source: https://pub.dev/packages/diox

Set the content type to form-urlencoded at the instance level or for a single request.

```dart
// Instance level
dio.options.contentType = Headers.formUrlEncodedContentType;
// or only works once
dio.post(
  '/info',
  data: {'id': 5},
  options: Options(contentType: Headers.formUrlEncodedContentType),
);
```

--------------------------------

### Import Platform-Specific Classes

Source: https://pub.dev/packages/diox/changelog

Use these import paths to access platform-specific classes for IO or browser environments.

```dart
import 'package:diox/io.dart';
```

```dart
import 'package:diox/browser.dart';
```

--------------------------------

### Import the package

Source: https://pub.dev/packages/dio_cache_interceptor_db_store/install

Include this import statement in your Dart files to access the library functionality.

```dart
import 'package:dio_cache_interceptor_db_store/dio_cache_interceptor_db_store.dart';
```

--------------------------------

### Import the package

Source: https://pub.dev/packages/dio_cache_interceptor_file_store/install

Include this import statement in your Dart files to access the library functionality.

```dart
import 'package:dio_cache_interceptor_file_store/dio_cache_interceptor_file_store.dart';
```

--------------------------------

### Configure Dio with CookieManager

Source: https://pub.dev/packages/diox_cookie_manager/example

Demonstrates how to add the CookieManager interceptor to a Dio instance and perform requests with cookie persistence.

```dart
import 'package:cookie_jar/cookie_jar.dart';
import 'package:diox/diox.dart';
import 'package:diox_cookie_manager/diox_cookie_manager.dart';

void main() async {
  final dio = Dio();
  final cookieJar = CookieJar();
  dio.interceptors.add(CookieManager(cookieJar));
  await dio.get('https://baidu.com/');
  // Print cookies
  print(cookieJar.loadForRequest(Uri.parse('https://baidu.com/')));
  // second request with the cookie
  await dio.get('https://baidu.com/');
}
```

--------------------------------

### Implement Dio Image Provider

Source: https://pub.dev/packages/dio_cache_interceptor/example

Custom ImageProvider to load images using the Dio client. Note that production implementations should use streams to avoid OOM issues.

```dart
class _ImageCacheTab extends StatefulWidget {
  const _ImageCacheTab(this.caller);

  final Caller caller;

  @override
  _ImageCacheTabState createState() => _ImageCacheTabState();
}

class _ImageCacheTabState extends State<_ImageCacheTab> {
  final url =
      'https://fr.wikipedia.org/static/images/mobile/copyright/wikipedia.png';

  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: SingleChildScrollView(
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.center,
          mainAxisSize: MainAxisSize.min,
          children: [
            const Text(
              'Look at print output to get status code',
              textAlign: TextAlign.center,
            ),
            Image(image: DioImageProvider(url, widget.caller)),
          ],
        ),
      ),
    );
  }
}

/// Basic image downloader
/// Production implementation should use stream instead
/// to avoid OOM problems & improve performance
class DioImageProvider extends ImageProvider<DioImageProvider> {
  final String url;
  final Caller caller;

  const DioImageProvider(this.url, this.caller);

  @override
  ImageStreamCompleter loadImage(
    DioImageProvider key,
    ImageDecoderCallback decode,
  ) {
    return MultiFrameImageStreamCompleter(
      codec: _loadAsync(decode),
      scale: 1.0,
    );
  }
```

--------------------------------

### Upload Multiple Files

Source: https://pub.dev/packages/dio/versions/5.10.0

Demonstrates two methods for adding multiple files to FormData, including handling array keys.

```dart
final formData = FormData.fromMap({
  'files': [
    MultipartFile.fromFileSync('path/to/upload1.txt', filename: 'upload1.txt'),
    MultipartFile.fromFileSync('path/to/upload2.txt', filename: 'upload2.txt'),
  ],
});
```

```dart
final formData = FormData();
formData.files.addAll([
  MapEntry(
   'files',
    MultipartFile.fromFileSync('./example/upload.txt',filename: 'upload.txt'),
  ),
  MapEntry(
    'files',
    MultipartFile.fromFileSync('./example/upload.txt',filename: 'upload.txt'),
  ),
]);
```

--------------------------------

### Implement _loadAsync for DioImageProvider

Source: https://pub.dev/packages/dio_cache_interceptor/example

Fetches image bytes using Dio and decodes them into an ImageDecoderCallback. Requires handling of null or empty response data.

```dart
Future<Codec> _loadAsync(ImageDecoderCallback decode) async {
    final response = await caller.dio.get<Uint8List>(
      url,
      options: Options(responseType: ResponseType.bytes),
    );

    final bytes = response.data;
    if (bytes == null || bytes.isEmpty) {
      throw StateError('$url cannot be loaded as an image.');
    }

    if (kDebugMode) {
      print(
        response.statusCode == 200
            ? 'From network ${response.statusCode}'
            : 'From cache ${response.statusCode}',
      );
    }

    return decode(await ImmutableBuffer.fromUint8List(bytes));
  }
```

--------------------------------

### Download a file

Source: https://pub.dev/packages/diox

Downloads a file from a URL to a local path.

```dart
response = await dio.download(
  'https://pub.dev/',
  (await getTemporaryDirectory()).path + 'pub.html',
);
```

--------------------------------

### Configure a proxy

Source: https://pub.dev/packages/dio_http2_adapter

Set a proxy URI within the ConnectionManager configuration.

```dart
void main() async {
  final dio = Dio()
    ..options.baseUrl = 'https://pub.dev'
    ..interceptors.add(LogInterceptor())
    ..httpClientAdapter = Http2Adapter(
      ConnectionManager(
        idleTimeout: Duration(seconds: 10),
        onClientCreate: (_, config) =>
            config.proxy = Uri.parse('http://login:password@192.168.0.1:8888'),
      ),
    );
}
```

--------------------------------

### Handling DioException

Source: https://pub.dev/packages/dio/versions/5.10.0

Demonstrates how to catch and handle DioException when a request fails, including accessing response data or request options.

```APIDOC
## Handling DioException

### Description
When a request fails, Dio throws a DioException. This snippet shows how to catch the exception and inspect the response or request options.

### Usage
```dart
try {
  await dio.get('https://api.pub.dev/not-exist');
} on DioException catch (e) {
  if (e.response != null) {
    print(e.response.data);
  } else {
    print(e.message);
  }
}
```
```

--------------------------------

### Request Options configuration

Source: https://pub.dev/packages/diox

Defines the structure and fields available for configuring HTTP requests.

```dart
/// Http method.
String method;

/// Request base url, it can contain sub path, like: https://dart.dev/api/.
String? baseUrl;

/// Http request headers.
Map<String, dynamic>? headers;

/// Timeout for opening url.
Duration? connectTimeout;

/// Whenever more than [receiveTimeout] passes between two events from response stream,
/// [Dio] will throw the [DioError] with [DioErrorType.RECEIVE_TIMEOUT].
/// Note: This is not the receiving time limitation.
Duration? receiveTimeout;

/// Request data, can be any type.
dynamic data;

/// If the `path` starts with 'http(s)', the `baseURL` will be ignored, otherwise,
/// it will be combined and then resolved with the baseUrl.
String path;

/// The request Content-Type.
/// If you want to encode request body with 'application/x-www-form-urlencoded',
/// you can set [Headers.formUrlEncodedContentType], and [Dio]
/// will automatically encode the request body.
String? contentType;

/// [responseType] indicates the type of data that the server will respond with
/// options which defined in [ResponseType] are `json`, `stream`, `plain`.
///
/// The default value is `json`, dio will parse response string to json object automatically
/// when the content-type of response is 'application/json'.
///
/// If you want to receive response data with binary bytes, for example,
/// downloading a image, use `stream`.
///
/// If you want to receive the response data with String, use `plain`.
ResponseType? responseType;

/// `validateStatus` defines whether the request is successful for a given
/// HTTP response status code. If `validateStatus` returns `true` ,
/// the request will be perceived as successful; otherwise, considered as failed.
ValidateStatus? validateStatus;

/// Custom field that you can retrieve it later in
/// [Interceptor], [Transformer] and the [Response] object.
Map<String, dynamic>? extra;

/// Common query parameters.
Map<String, dynamic /*String|Iterable<String>*/ >? queryParameters;

/// [listFormat] indicates the format of collection data in request options。
/// The default value is `multiCompatible`
ListFormat? listFormat;
```

--------------------------------

### Advanced Cache Configuration Options

Source: https://pub.dev/packages/dio_http_cache

Various configurations for cache keys, stale times, and refresh behavior.

```dart
buildCacheOptions(Duration(days: 7), subKey: "page=1")
```

```dart
buildCacheOptions(Duration(days: 7), maxStale: Duration(days: 10))
```

```dart
buildCacheOptions(Duration(days: 7), forceRefresh: true)
```

--------------------------------

### Options Class

Source: https://pub.dev/packages/dio

The Options class defines the configuration for a single HTTP request in Dio.

```APIDOC
## Options Class

### Description
Configuration object for a single HTTP request in Dio. These settings are merged with BaseOptions when making a request.

### Properties
- **method** (String) - The HTTP request method.
- **sendTimeout** (Duration?) - Timeout when sending data.
- **receiveTimeout** (Duration?) - Timeout when receiving data.
- **transformTimeout** (Duration?) - Timeout when transforming response data.
- **extra** (Map<String, dynamic>?) - Custom fields for use in Interceptors or Transformers.
- **headers** (Map<String, dynamic>?) - HTTP request headers.
- **preserveHeaderCase** (bool?) - Whether to preserve the case of header keys.
- **responseType** (ResponseType?) - The expected format of the response (json, plain, bytes, stream).
- **contentType** (String?) - The request content-type.
- **validateStatus** (ValidateStatus?) - Callback to determine if a status code is considered successful.
- **receiveDataWhenStatusError** (bool?) - Whether to retrieve data if the status code indicates a failure.
- **followRedirects** (bool?) - Whether to follow HTTP redirects.
- **maxRedirects** (int?) - Maximum number of redirects allowed.
- **persistentConnection** (bool?) - Whether to use persistent connections.
- **requestEncoder** (RequestEncoder?) - Custom encoder for request data.
- **responseDecoder** (ResponseDecoder?) - Custom decoder for response data.
- **listFormat** (ListFormat?) - Format of collection data in query parameters and x-www-url-encoded bodies.
```

--------------------------------

### Import diox_flutter_transformer

Source: https://pub.dev/packages/diox_flutter_transformer

Include the necessary imports in your Dart file.

```dart
import 'package:dio/dio.dart';
import 'package:diox_flutter_transformer/diox_flutter_transformer.dart';
```

--------------------------------

### Handle response as bytes

Source: https://pub.dev/packages/diox

Configures the request to return the response body as a list of bytes.

```dart
final rs = await Dio().get<List<int>>(
  url,
  options: Options(responseType: ResponseType.bytes), // Set the response type to `bytes`.
);
print(rs.data); // Type: List<int>.
```

--------------------------------

### Configure Dependency Overrides

Source: https://pub.dev/packages/diox

Use this configuration to override the standard dio package with the Diox fork.

```yaml
dependency_overrides:
  dio:
    git:
      url: https://github.com/cfug/diox
      path: dio/
      ref: dio
```

--------------------------------

### Initialize DioInterceptToCurl

Source: https://pub.dev/packages/dio_intercept_to_curl

Add the interceptor to your Dio instance to begin logging requests as curl commands.

```dart
_dio = Dio();

_dio.interceptors.add(DioInterceptToCurl());
```