|  | // Copyright (c) 2013, 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. | 
|  |  | 
|  | // @dart = 2.9 | 
|  |  | 
|  | import "package:expect/expect.dart"; | 
|  | import "dart:io"; | 
|  |  | 
|  | void testPort() { | 
|  | ServerSocket.bind("127.0.0.1", 0).then((server) { | 
|  | Socket.connect("127.0.0.1", server.port).then((clientSocket) { | 
|  | server.listen((Socket socket) { | 
|  | Expect.equals(socket.port, server.port); | 
|  | Expect.equals(clientSocket.port, socket.remotePort); | 
|  | Expect.equals(clientSocket.remotePort, socket.port); | 
|  | clientSocket.destroy(); | 
|  | socket.destroy(); | 
|  | server.close(); | 
|  | }); | 
|  | }); | 
|  | }); | 
|  | } | 
|  |  | 
|  | void main() { | 
|  | testPort(); | 
|  | } |