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

sdk/lib/io/socket.dart

Index: sdk/lib/io/socket.dart
diff --git a/sdk/lib/io/socket.dart b/sdk/lib/io/socket.dart
index c5eb054109a2b59d1b5934847f4952608748e944..a31b5bbe4cabb08f50a5b17afb39fb48d98453a1 100644
--- a/sdk/lib/io/socket.dart
+++ b/sdk/lib/io/socket.dart
@@ -4,6 +4,21 @@
 
 part of dart.io;
 
+
+class InternetAddressType {
+  static const InternetAddressType IPv4 = const InternetAddressType._("IPv4");
+  static const InternetAddressType IPv6 = const InternetAddressType._("IPv6");

[Søren Gjesse, 2013/04/18 09:07:40]

Change this to an integer with the same values as the C SocketAddress::Type
enum. The you don't need the   ... ? 0 : 1 on the other files, but can use a
value getter.

[Anders Johnsen, 2013/04/18 12:09:45]

Done.

+  final String name;
+  const InternetAddressType._(String this.name);

[Søren Gjesse, 2013/04/18 09:07:40]

Please ass toString as well.

[Anders Johnsen, 2013/04/18 12:09:45]

Done.

+}
+
+abstract class InternetAddress {
+  InternetAddressType type;
+  String get address;
+
+  external static Future<List<InternetAddress>> lookup(String host);
+}
+
 /**
  * The RawServerSocket is a server socket, providing a stream of low-level
  * [RawSocket]s.
@@ -145,7 +160,7 @@ abstract class RawSocket implements Stream<RawSocketEvent> {
    * that will complete with either a [RawSocket] once connected or an error
    * if the host-lookup or connection failed.

[Søren Gjesse, 2013/04/18 09:07:40]

Update comment on type of host.

[Anders Johnsen, 2013/04/18 12:09:45]

Done.

    */
-  external static Future<RawSocket> connect(String host, int port);
+  external static Future<RawSocket> connect(host, int port);
 
   /**
    * Returns the number of received and non-read bytes in the socket that
@@ -234,7 +249,7 @@ abstract class Socket implements Stream<List<int>>, IOSink {
    * that will complete with either a [Socket] once connected or an error
    * if the host-lookup or connection failed.

[Søren Gjesse, 2013/04/18 09:07:40]

Ditto.

[Anders Johnsen, 2013/04/18 12:09:45]

Done.

    */
-  external static Future<Socket> connect(String host, int port);
+  external static Future<Socket> connect(host, int port);
 
   /**
    * Destroy the socket in both directions. Calling [destroy] will make the