| // 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. | 
 |  | 
 | 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(); | 
 | } |