| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| library io_client; |
| |
| import 'dart:async'; |
| import 'dart:io'; |
| |
| import 'base_client.dart'; |
| import 'base_request.dart'; |
| import 'streamed_response.dart'; |
| import 'utils.dart'; |
| |
| /// A `dart:io`-based HTTP client. This is the default client. |
| class IOClient extends BaseClient { |
| /// The underlying `dart:io` HTTP client. |
| HttpClient _inner; |
| |
| /// Creates a new HTTP client. |
| IOClient() : _inner = new HttpClient(); |
| |
| /// Sends an HTTP request and asynchronously returns the response. |
| Future<StreamedResponse> send(BaseRequest request) { |
| var stream = request.finalize(); |
| |
| var completer = new Completer<StreamedResponse>(); |
| var connection = _inner.openUrl(request.method, request.url); |
| bool completed = false; |
| connection.followRedirects = request.followRedirects; |
| connection.maxRedirects = request.maxRedirects; |
| connection.onError = (e) { |
| async.then((_) { |
| // TODO(nweiz): issue 4974 means that any errors that appear in the |
| // onRequest or onResponse callbacks get passed to onError. If the |
| // completer has already fired, we want to re-throw those exceptions |
| // to the top level so that they aren't silently ignored. |
| if (completed) throw e; |
| |
| completed = true; |
| completer.completeError(e); |
| }); |
| }; |
| |
| var pipeCompleter = new Completer(); |
| connection.onRequest = (underlyingRequest) { |
| underlyingRequest.contentLength = request.contentLength; |
| underlyingRequest.persistentConnection = request.persistentConnection; |
| request.headers.forEach((name, value) { |
| underlyingRequest.headers.set(name, value); |
| }); |
| |
| chainToCompleter( |
| stream.pipe(wrapOutputStream(underlyingRequest.outputStream)), |
| pipeCompleter); |
| }; |
| |
| connection.onResponse = (response) { |
| var headers = {}; |
| response.headers.forEach((key, values) { |
| headers[key] = values.join(','); |
| }); |
| |
| if (completed) return; |
| |
| completed = true; |
| completer.complete(new StreamedResponse( |
| wrapInputStream(response.inputStream), |
| response.statusCode, |
| response.contentLength, |
| request: request, |
| headers: headers, |
| isRedirect: response.isRedirect, |
| persistentConnection: response.persistentConnection, |
| reasonPhrase: response.reasonPhrase)); |
| }; |
| |
| return Future.wait([ |
| completer.future, |
| pipeCompleter.future |
| ]).then((values) => values.first); |
| } |
| |
| /// Closes the client. This terminates all active connections. If a client |
| /// remains unclosed, the Dart process may not terminate. |
| void close() { |
| if (_inner != null) _inner.shutdown(force: true); |
| _inner = null; |
| } |
| } |