Add new InternetAddress class with a static lookup function (including IPv6

tests/standalone/io/secure_server_socket_test.dart

 // 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.
 //
 // VMOptions=
 // VMOptions=--short_socket_read
 // VMOptions=--short_socket_write
 // VMOptions=--short_socket_read --short_socket_write
 
 import "package:expect/expect.dart";
 import "dart:async";
 import "dart:io";
 import "dart:isolate";
 
-const SERVER_ADDRESS = "127.0.0.1";
 const HOST_NAME = "localhost";
 const CERTIFICATE = "localhost_cert";
 
 void testSimpleBind() {
   ReceivePort port = new ReceivePort();
-  SecureServerSocket.bind(SERVER_ADDRESS, 0, 5, CERTIFICATE).then((s) {
+  SecureServerSocket.bind(HOST_NAME, 0, 5, CERTIFICATE).then((s) {
     Expect.isTrue(s.port > 0);
     s.close();
     port.close();
   });
 }
 
 void testInvalidBind() {
   int count = 0;
   ReceivePort port = new ReceivePort();
   port.receive((_, __) { count++; if (count == 3) port.close(); });
@@ skipping 11 matching lines @@
     Expect.fail("Failure expected");
   }).catchError((error) {
     Expect.isTrue(error is SocketIOException);
     port.toSendPort().send(1);
   });
 
   // Bind to a port already in use.
   // Either an error or a successful bind is allowed.
   // Windows platforms allow multiple binding to the same socket, with
   // unpredictable results.
-  SecureServerSocket.bind(SERVER_ADDRESS, 0, 5, CERTIFICATE).then((s) {
-    SecureServerSocket.bind(SERVER_ADDRESS,
+  SecureServerSocket.bind(HOST_NAME, 0, 5, CERTIFICATE).then((s) {
+    SecureServerSocket.bind(HOST_NAME,
                             s.port,
                             5,
                             CERTIFICATE).then((t) {
       Expect.equals('windows', Platform.operatingSystem);
       Expect.equals(s.port, t.port);
       s.close();
       t.close();
       port.toSendPort().send(1);
     }).catchError((error) {
       Expect.notEquals('windows', Platform.operatingSystem);
       Expect.isTrue(error is SocketIOException);
       s.close();
       port.toSendPort().send(1);
     });
   });
 }
 
 void testSimpleConnect(String certificate) {
   ReceivePort port = new ReceivePort();
-  SecureServerSocket.bind(SERVER_ADDRESS, 0, 5, certificate).then((server) {
+  SecureServerSocket.bind(HOST_NAME, 0, 5, certificate).then((server) {
     var clientEndFuture = SecureSocket.connect(HOST_NAME, server.port);
     server.listen((serverEnd) {
       clientEndFuture.then((clientEnd) {
         clientEnd.close();
         serverEnd.close();
         server.close();
         port.close();
       });
     });
   });
 }
 
 void testSimpleConnectFail(String certificate) {
   ReceivePort port = new ReceivePort();
-  SecureServerSocket.bind(SERVER_ADDRESS, 0, 5, certificate).then((server) {
+  SecureServerSocket.bind(HOST_NAME, 0, 5, certificate).then((server) {
     var clientEndFuture = SecureSocket.connect(HOST_NAME, server.port)
       .then((clientEnd) {
         Expect.fail("No client connection expected.");
       })
       .catchError((error) {
         Expect.isTrue(error is SocketIOException);
       });
     server.listen((serverEnd) {
       Expect.fail("No server connection expected.");
     },
     onError: (error) {
       Expect.isTrue(error is SocketIOException);
       clientEndFuture.then((_) => port.close());
     });
   });
 }
 
 void testServerListenAfterConnect() {
   ReceivePort port = new ReceivePort();
-  SecureServerSocket.bind(SERVER_ADDRESS, 0, 5, CERTIFICATE).then((server) {
+  SecureServerSocket.bind(HOST_NAME, 0, 5, CERTIFICATE).then((server) {
     Expect.isTrue(server.port > 0);
     var clientEndFuture = SecureSocket.connect(HOST_NAME, server.port);
     new Timer(const Duration(milliseconds: 500), () {
       server.listen((serverEnd) {
         clientEndFuture.then((clientEnd) {
           clientEnd.close();
           serverEnd.close();
           server.close();
           port.close();
         });
@@ skipping 20 matching lines @@
   }
 
   void verifyTestData(List<int> data) {
     Expect.equals(messageSize, data.length);
     List<int> expected = createTestData();
     for (int i = 0; i < messageSize; i++) {
       Expect.equals(expected[i], data[i]);
     }
   }
 
-  SecureServerSocket.bind(SERVER_ADDRESS, 0, 5, CERTIFICATE).then((server) {
+  SecureServerSocket.bind(HOST_NAME, 0, 5, CERTIFICATE).then((server) {
     server.listen((client) {
       int bytesRead = 0;
       int bytesWritten = 0;
       List<int> data = new List<int>(messageSize);
 
       client.listen(
         (buffer) {
           Expect.isTrue(bytesWritten == 0);
           data.setRange(bytesRead, bytesRead + buffer.length, buffer);
           bytesRead += buffer.length;
@@ skipping 37 matching lines @@
                           useBuiltinRoots: false);
   testSimpleBind();
   testInvalidBind();
   testSimpleConnect(CERTIFICATE);
   testSimpleConnect("CN=localhost");
   testSimpleConnectFail("not_a_nickname");
   testSimpleConnectFail("CN=notARealDistinguishedName");
   testServerListenAfterConnect();
   testSimpleReadWrite();
 }