- Add possibility to redirect messages if they were not delivered.

runtime/vm/service/message.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.
 
 part of vmservice;
 
 class Message {
   final Completer _completer = new Completer.sync();
   bool get completed => _completer.isCompleted;
   /// Future of response.
@@ skipping 42 matching lines @@
   Future<String> send(SendPort sendPort) {
     final receivePort = new RawReceivePort();
     receivePort.handler = (value) {
       receivePort.close();
       if (value is Exception) {
         _completer.completeError(value);
       } else {
         _completer.complete(value);
       }
     };
-    var keys = options.keys.toList();
-    var values = options.values.toList();
-    var request = [receivePort.sendPort, path, keys, values];
+    var keys = options.keys.toList(growable:false);
+    var values = options.values.toList(growable:false);
+    var request = new List(5)
+        ..[0] = 0  // Make room for OOB message type.
+        ..[1] = receivePort.sendPort
+        ..[2] = path
+        ..[3] = keys
+        ..[4] = values;
     sendIsolateServiceMessage(sendPort, request);
     return _completer.future;
   }
 
   Future<String> sendToVM() {
     final receivePort = new RawReceivePort();
     receivePort.handler = (value) {
       receivePort.close();
       if (value is Exception) {
         _completer.completeError(value);
       } else {
         _completer.complete(value);
       }
     };
-    var keys = options.keys.toList();
-    var values = options.values.toList();
-    var request = [receivePort.sendPort, path, keys, values];
+    var keys = options.keys.toList(growable:false);
+    var values = options.values.toList(growable:false);
+    var request = new List(5)
+        ..[0] = 0  // Make room for OOB message type.
+        ..[1] = receivePort.sendPort
+        ..[2] = path
+        ..[3] = keys
+        ..[4] = values;
     sendRootServiceMessage(request);
     return _completer.future;
   }
 
   void setResponse(String response) {
     _completer.complete(response);
   }
 
   void setErrorResponse(String error) {
     _completer.complete(JSON.encode({
         'type': 'ServiceError',
         'id': '',
         'kind': 'RequestError',
         'message': error,
         'path': path,
         'options': options
     }));
   }
 }
 
 void sendIsolateServiceMessage(SendPort sp, List m)
     native "VMService_SendIsolateServiceMessage";
 
 void sendRootServiceMessage(List m)
     native "VMService_SendRootServiceMessage";