| // Copyright (c) 2018, 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 |
| /// Stream<RawSocketEvent> timeout ( |
| /// Duration timeLimit, { |
| /// void onTimeout( |
| /// EventSink<T> sink |
| /// ) |
| /// }) |
| /// . . . |
| /// Whenever more than timeLimit passes between two events from this stream, the |
| /// onTimeout function is called, which can emit further events on the returned |
| /// stream. |
| /// |
| /// The countdown doesn't start until the returned stream is listened to. The |
| /// countdown is reset every time an event is forwarded from this stream, or when |
| /// the stream is paused and resumed. |
| /// |
| /// @description Checks that whenever more than timeLimit passes between two |
| /// events from this stream, the onTimeout function is called, which can emit |
| /// further events on the returned stream. |
| /// @author ngl@unipro.ru |
| |
| import "dart:io"; |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| check(List dataExpected, [bool no_write_events = false]) { |
| asyncStart(); |
| var address = InternetAddress.loopbackIPv4; |
| RawDatagramSocket.bind(address, 0).then((producer) { |
| RawDatagramSocket.bind(address, 0).then((receiver) { |
| if (no_write_events) { |
| receiver.writeEventsEnabled = false; |
| } |
| int count = 0; |
| int sent = 0; |
| List list = []; |
| bool writeDataNotNull = false; |
| int totalSent = 0; |
| |
| new Timer.periodic(const Duration(milliseconds: 20), (timer) { |
| totalSent += producer.send([sent], address, receiver.port); |
| sent++; |
| if (sent > 2) { |
| timer.cancel(); |
| if (totalSent != sent) { |
| Expect.fail('$totalSent messages were sent instead of $sent.'); |
| } |
| producer.close(); |
| } |
| }); |
| |
| Stream s = receiver.timeout(const Duration(milliseconds: 5), |
| onTimeout: (EventSink sink) { |
| count++; |
| }); |
| Timer? timer; |
| s.listen((event) { |
| list.add(event); |
| Datagram? d = receiver.receive(); |
| if (event == RawSocketEvent.write && d != null) { |
| writeDataNotNull = true; |
| } |
| timer?.cancel(); |
| timer = new Timer(const Duration(milliseconds: 200), () { |
| Expect.isNull(receiver.receive()); |
| receiver.close(); |
| }); |
| }, onDone: () { |
| Expect.isTrue(count > 0); |
| if (writeDataNotNull) { |
| dataExpected.removeAt(1); |
| } |
| Expect.deepEquals(dataExpected, list); |
| timer?.cancel(); |
| asyncEnd(); |
| }); |
| }); |
| }); |
| } |
| |
| main() { |
| check([ |
| RawSocketEvent.write, |
| RawSocketEvent.read, |
| RawSocketEvent.read, |
| RawSocketEvent.read, |
| RawSocketEvent.closed |
| ]); |
| check([ |
| RawSocketEvent.read, |
| RawSocketEvent.read, |
| RawSocketEvent.read, |
| RawSocketEvent.closed |
| ], true); |
| } |