Add the index information to network interface

runtime/bin/socket_patch.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.
 
 patch class RawServerSocket {
   /* patch */ static Future<RawServerSocket> bind(address,
                                                   int port,
                                                   {int backlog: 0,
                                                    bool v6Only: false}) {
     return _RawServerSocket.bind(address, port, backlog, v6Only);
@@ skipping 179 matching lines @@
     return "InternetAddress('$address', ${type.name})";
   }
 
   static Uint8List _fixed(int id) native "InternetAddress_Fixed";
   static Uint8List _parse(int type, String address)
       native "InternetAddress_Parse";
 }
 
 class _NetworkInterface implements NetworkInterface {
   final String name;
-  final List<InternetAddress> addresses;
+  final int index;
+  final List<InternetAddress> addresses = [];
 
-  _NetworkInterface(String this.name, List<InternetAddress> this.addresses);
+  _NetworkInterface(this.name, this.index);
 
   String toString() {
     return "NetworkInterface('$name', $addresses)";
   }
 }
 
 
 // The _NativeSocket class encapsulates an OS socket.
 class _NativeSocket extends NativeFieldWrapperClass1 {
   // Bit flags used when communicating between the eventhandler and
@@ skipping 85 matching lines @@
 
   static Future<List<NetworkInterface>> listInterfaces({
       bool includeLoopback: false,
       bool includeLinkLocal: false,
       InternetAddressType type: InternetAddressType.ANY}) {
     return _IOService.dispatch(_SOCKET_LIST_INTERFACES, [type._value])
         .then((response) {
           if (isErrorResponse(response)) {
             throw createError(response, "Failed listing interfaces");
           } else {
-            var list = new List<NetworkInterface>();
             var map = response.skip(1)
                 .fold(new Map<String, List<InternetAddress>>(), (map, result) {
                   var type = new InternetAddressType._from(result[0]);
                   var name = result[3];
+                  var index = result[4];
                   var address = new _InternetAddress(
                       type, result[1], "", result[2]);
                   if (!includeLinkLocal && address.isLinkLocal) return map;
                   if (!includeLoopback && address.isLoopback) return map;
-                  map.putIfAbsent(name, () => new List<InternetAddress>());
-                  map[name].add(address);
+                  map.putIfAbsent(
+                      name, () => new _NetworkInterface(name, index));
+                  map[name].addresses.add(address);
                   return map;
-                })
-                .forEach((name, addresses) {
-                  list.add(new _NetworkInterface(name, addresses));
                 });
-            return list;
+            return map.values.toList();
           }
         });
   }
 
   static Future<_NativeSocket> connect(host, int port) {
     return new Future.value(host)
         .then((host) {
           if (host is _InternetAddress) return host;
           return lookup(host)
               .then((list) {
@@ skipping 937 matching lines @@
     if (_detachReady != null) {
       _detachReady.complete(null);
     } else {
       if (_raw != null) {
         _raw.shutdown(SocketDirection.SEND);
         _disableWriteEvent();
       }
     }
   }
 }