Alaz

Alaz is a powerful and customizable HTTP client for Dart and Flutter. It includes features such as retry mechanism, interceptors, request cancellation, caching, and more.

Features

• HTTP Requests: Supports GET, POST, and other HTTP methods.
• Retry Mechanism: Automatically retries failed requests.
• Interceptors: Add interceptors to modify requests, responses, or handle errors.
• Request Cancellation: Easily cancel ongoing HTTP requests.
• Caching: Cache HTTP responses to improve performance.
• Timeout Control: Customize connection and response timeouts.
• Proxy Support: Send requests through a proxy server.
• Chained Requests: Chain multiple HTTP requests.

Installation

Add alaz to your pubspec.yaml file:

dependencies:
  alaz: ^1.0.0

Then run:

flutter pub get

Getting Started

Here’s how to use Alaz in your project:

Basic Usage

import 'package:alaz/alaz.dart';

void main() async {
  final alaz = Alaz();

  // Simple GET request
  final response = await alaz.get('https://jsonplaceholder.typicode.com/posts/1');
  print(response.data);

  // POST request with data
  final postResponse = await alaz.post('https://jsonplaceholder.typicode.com/posts',
    data: {'title': 'foo', 'body': 'bar', 'userId': 1});
  print(postResponse.data);
}

Retry Mechanism:

Alaz automatically retries failed requests based on the configured retryCount.

final alaz = Alaz(
  options: AlazOptions(retryCount: 3),
);

try {
  final response = await alaz.get('https://invalid-url');
} catch (e) {
  print('Request failed after 3 retries.');
}

Interceptors

You can add interceptors to modify requests, responses, or handle errors.

final alaz = Alaz();
alaz.addInterceptor(TestInterceptor(
  onRequestCallback: (AlazRequest request) async {
    print('Requesting: ${request.path}');
  },
  onResponseCallback: (AlazResponse response) async {
    print('Response received: ${response.statusCode}');
  },
  onErrorCallback: (error) async {
    print('Error occurred: $error');
  },
));

Request Cancellation

You can cancel ongoing requests using CancelToken.

final alaz = Alaz();
final cancelToken = CancelToken();

alaz.get('https://jsonplaceholder.typicode.com/posts/1', cancelToken: cancelToken);

cancelToken.cancel();

Timeout Configuration

You can set custom timeouts for requests.

final alaz = Alaz(
  options: AlazOptions(connectTimeout: 5000, receiveTimeout: 3000),
);

try {
  final response = await alaz.get('https://jsonplaceholder.typicode.com/posts/1');
} catch (e) {
  print('Request timed out.');
}

Proxy Support

Alaz can send requests through a proxy.

final alaz = Alaz(
  options: AlazOptions(proxy: 'http://proxy-server.com:8080'),
);

final response = await alaz.get('https://jsonplaceholder.typicode.com/posts/1');

Chained Requests

You can chain multiple requests together.

final alaz = Alaz();

final firstResponse = await alaz.get('https://jsonplaceholder.typicode.com/posts/1');
final secondResponse = await alaz.get('https://jsonplaceholder.typicode.com/posts/2');

final chainedResponse = await alaz.chainRequests(firstResponse, secondResponse);
print(chainedResponse.data);

Testing

To run the tests, simply use the flutter test command:

flutter test