Use typed-data views for incoming http data.

sdk/lib/io/http_parser.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 dart.io;
 
 // Global constants.
 class _Const {
   // Bytes for "HTTP".
   static const HTTP = const [72, 84, 84, 80];
@@ skipping 646 matching lines @@
         case _State.BODY:
           // The body is not handled one byte at a time but in blocks.
           _index--;
           int dataAvailable = _buffer.length - _index;
           List<int> data;
           if (_remainingContent == -1 ||
               dataAvailable <= _remainingContent) {
             if (_index == 0) {
               data = _buffer;
             } else {
-              data = new Uint8List(dataAvailable);
-              data.setRange(0, dataAvailable, _buffer, _index);
+              data = new Uint8List.view(_buffer.buffer,
+                                        _index,
+                                        dataAvailable);
             }
           } else {
-            data = new Uint8List(_remainingContent);
-            data.setRange(0, _remainingContent, _buffer, _index);
+            data = new Uint8List.view(_buffer.buffer,
+                                      _index,
+                                      _remainingContent);
           }
           _bodyController.add(data);
           if (_remainingContent != -1) {
             _remainingContent -= data.length;
           }
           _index += data.length;
           if (_remainingContent == 0) {
             if (!_chunked) {
               _reset();
               _closeIncoming();
@@ skipping 265 matching lines @@
     if (_socketSubscription != null) _socketSubscription.cancel();
     _state = _State.FAILURE;
     _controller.addError(error, stackTrace);
     _controller.close();
   }
 
   // State.
   bool _parserCalled = false;
 
   // The data that is currently being parsed.
-  List<int> _buffer;
+  Uint8List _buffer;
   int _index;
 
   final bool _requestParser;
   int _state;
   int _httpVersionIndex;
   int _messageType;
   int _statusCode = 0;
   List _method_or_status_code;
   List _uri_or_reason_phrase;
   List _headerField;
@@ skipping 12 matching lines @@
   _HttpHeaders _headers;
 
   // The current incoming connection.
   _HttpIncoming _incoming;
   StreamSubscription _socketSubscription;
   bool _paused = true;
   bool _bodyPaused = false;
   StreamController<_HttpIncoming> _controller;
   StreamController<List<int>> _bodyController;
 }