Clone this repo:
  1. 0fc840f Add urlencoded form support (#155) by Don · 6 weeks ago master
  2. 7559bff Refactor adjustHeaders (#154) by Don · 6 weeks ago
  3. 5d4e11d Merge pull request #151 from dart-lang/client-test by Natalie Weizenbaum · 3 months ago
  4. 8fab7e0 Update client_test to match the desired semantics by Natalie Weizenbaum · 3 months ago
  5. 6a90525 Use shelf in hybrid/server.dart by Natalie Weizenbaum · 3 months ago

http

A composable, Future-based library for making HTTP requests.

This package contains a set of high-level functions and classes that make it easy to consume HTTP resources. It's platform-independent, and can be used on both the command-line and the browser. Currently the global utility functions are unsupported on the browser; see “Using on the Browser” below.

Using

The easiest way to use this library is via the top-level functions, although they currently only work on platforms where dart:io is available. They allow you to make individual HTTP requests with minimal hassle:

import 'package:http/http.dart' as http;

var url = "http://example.com/whatsit/create";
http.post(url, body: {"name": "doodle", "color": "blue"})
    .then((response) {
  print("Response status: ${response.statusCode}");
  print("Response body: ${response.body}");
});

http.read("http://example.com/foobar.txt").then(print);

If you‘re making multiple requests to the same server, you can keep open a persistent connection by using a Client rather than making one-off requests. If you do this, make sure to close the client when you’re done:

var client = new http.Client();
client.post(
    "http://example.com/whatsit/create",
    body: {"name": "doodle", "color": "blue"})
  .then((response) => client.get(response.bodyFields['uri']))
  .then((response) => print(response.body))
  .whenComplete(client.close);

You can also exert more fine-grained control over your requests and responses by creating Request or StreamedRequest objects yourself and passing them to Client.send.

This package is designed to be composable. This makes it easy for external libraries to work with one another to add behavior to it. Libraries wishing to add behavior should create a subclass of BaseClient that wraps another Client and adds the desired behavior:

class UserAgentClient extends http.BaseClient {
  final String userAgent;
  final http.Client _inner;

  UserAgentClient(this.userAgent, this._inner);

  Future<http.StreamedResponse> send(http.BaseRequest request) {
    request.headers['user-agent'] = userAgent;
    return _inner.send(request);
  }
}

Using on the Browser

The HTTP library can be used on the browser via the BrowserClient class in package:http/browser_client.dart. This client translates requests into XMLHttpRequests. For example:

import 'dart:async';
import 'package:http/browser_client.dart';

main() async {
  var client = new BrowserClient();
  var url = '/whatsit/create';
  var response =
      await client.post(url, body: {'name': 'doodle', 'color': 'blue'});
  print('Response status: ${response.statusCode}');
  print('Response body: ${response.body}');
}