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w_transport Pub Build Status codecov.io

A fluent-style, platform-agnostic library with ready to use transport classes for sending and receiving data over HTTP.

Platform Agnostic

The main library (w_transport/w_transport.dart) depends on neither dart:html nor dart:io, making it platform agnostic. This means you can use the w_transport library to build components, libraries, or APIs that will be reusable in the browser AND on the server.

The end consumer will make the decision between client and server, most likely in a main() block.

Usage in the Browser

import 'package:w_transport/w_transport_client.dart' show configureWTransportForBrowser;

void main() {
  configureWTransportForBrowser();
}

Usage on the Server

import 'package:w_transport/w_transport_server.dart' show configureWTransportForServer;

void main() {
  configureWTransportForServer();
}

HTTP

All standard HTTP methods are supported:

• DELETE
• GET
• HEAD
• OPTIONS
• PATCH
• POST
• PUT
• TRACE (only on the server)

Features include:

• Fluent URI construction/mutation thanks to Fluri.
• Request headers.
• Easy attachment of various data types to requests.
• Upload and download progress streams.
• Sending of credentials on cross-origin requests (withCredentials flag - only has an effect on the client).
• Request cancellation.

WHttp

WHttp acts as an HTTP client that can be used to send many HTTP requests. Client-side this has no effect, but on the server this gives you the benefit of cached network connections.

Additionally, WHttp has static methods that make simple HTTP requests easy.

WHttp.get(Uri.parse('example.com'));
WHttp.post(Uri.parse('example.com'), 'data');
...

If you do create an instance of WHttp, make sure you close it when finished.

WHttp http = new WHttp();
...
http.close();

WRequest

WRequest is the class used to create and send HTTP requests. It supports headers, request data, upload & download progress monitoring, withCredentials (only useful in the browser), and request cancellation.

WResponse

WResponse is the class that contains the response to a WRequest.

This includes response meta data (available synchronously):

• Response headers
• Status code (200)
• Status text ('OK')

As well as the response content in the following formats (available asynchronously):

• Dynamic object (ByteBuffer, Document, String, List, etc.)
• Text (decoded and joined if necessary)
• Stream

WProgress

WProgress is a simple class that mimics ProgressEvent with an additional percent property for convenience. WProgress is platform-agnostic, unlike ProgressEvent.

WHttpException

WHttpException is a custom exception that is raised when a request responds with a non-successful status code.