LibTest/io/RawDatagramSocket/receive_A02_t01.dart

// 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.
///
/// @description Checks that the 65503 bytes datagram can be received.
/// @author ngl@unipro.ru
/// @author sgrekhov22@gmail.com

import "dart:io";
import "../http_utils.dart";
import "../../../Utils/expect.dart";

var localhost = InternetAddress.loopbackIPv4;
int sentLength = 65503;

main() async {
  RawDatagramSocket producer = await RawDatagramSocket.bind(localhost, 0);
  RawDatagramSocket receiver = await RawDatagramSocket.bind(localhost, 0);
  List<int> sList = new List<int>.filled(sentLength, 0);
  for (int i = 0; i < sentLength; i++) {
    sList[i] = i & 0xff;
  }
  int sent = await sendDatagram(producer, sList, localhost, receiver.port);
  if (sent > 0) {
    receiver.listen((_event) {
      if (_event == RawSocketEvent.read) {
        Datagram? d = receiver.receive();
        if (d != null) {
          Expect.isTrue(containsReceived([sList], d));
        }
      }
    });
  }
  Future.delayed(Duration(milliseconds: 100)).then((_) {
    producer.close();
    receiver.close();
  });
}