| // Copyright (c) 2017, 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. |
| |
| /// @assertion Datagram receive() |
| /// Receive a datagram. If there are no datagrams available null is returned. |
| /// |
| /// @description Checks that RawSocketEvent.closed event does not have datagram |
| /// and method receive returns null in this case. |
| /// @author ngl@unipro.ru |
| |
| import "dart:async"; |
| import "dart:io"; |
| import "../http_utils.dart"; |
| import "../../../Utils/expect.dart"; |
| |
| var localhost = InternetAddress.loopbackIPv4; |
| |
| Future<List<List<int>>> receiveClosed(RawDatagramSocket receiver, |
| {Duration delay = const Duration(seconds: 2), RawSocketEvent? event}) { |
| List<List<int>> received = []; |
| Completer<List<List<int>>> completer = new Completer<List<List<int>>>(); |
| Future<List<List<int>>> f = completer.future; |
| receiver.listen((_event) { |
| var datagram = receiver.receive(); |
| if (_event == event && datagram != null) { |
| received.add(datagram.data.toList()); |
| } |
| if (_event == RawSocketEvent.closed) { |
| if(!completer.isCompleted) { |
| completer.complete(received); |
| } |
| } |
| }); |
| new Future.delayed(delay, () { |
| receiver.close(); |
| }); |
| return f; |
| } |
| |
| main() async { |
| RawDatagramSocket producer = await RawDatagramSocket.bind(localhost, 0); |
| RawDatagramSocket receiver = await RawDatagramSocket.bind(localhost, 0); |
| List<List<int>> toSend = []; |
| List<int> bytesSent = |
| await sendDatagramOnce(producer, toSend, localhost, receiver.port); |
| producer.close(); |
| |
| List<List<int>> received = |
| await receiveClosed(receiver, event: RawSocketEvent.closed); |
| if (received.isNotEmpty) { |
| Expect.equals(received[0], null); |
| } |
| } |