Static members are not visible in subclasses

runtime/bin/socket_impl.dart

 // Copyright (c) 2012, 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.
 
 
 class _SocketBase {
   // Bit flags used when communicating between the eventhandler and
   // dart code. The EVENT flags are used to indicate events of
   // interest when sending a message from dart code to the
   // eventhandler. When receiving a message from the eventhandler the
@@ skipping 264 matching lines @@
 
   _ServerSocket._internal();
 
   _accept(Socket socket) native "ServerSocket_Accept";
 
   _createBindListen(String bindAddress, int port, int backlog)
       native "ServerSocket_CreateBindListen";
 
   void set onConnection(void callback(Socket connection)) {
     _clientConnectionHandler = callback;
-    _setHandler(_IN_EVENT,
+    _setHandler(_SocketBase._IN_EVENT,
                 _clientConnectionHandler != null ? _connectionHandler : null);
   }
 
   void _connectionHandler() {
     if (_id >= 0) {
       _Socket socket = new _Socket._internal();
       var result = _accept(socket);
       if (result is OSError) {
         _reportError(result, "Accept failed");
       } else if (result) {
@@ skipping 180 matching lines @@
            "Cannot set close handler when input stream is used");
     _onClosed = callback;
   }
 
   bool _isListenSocket() => false;
 
   bool _isPipe() => _pipe;
 
   InputStream get inputStream() {
     if (_inputStream == null) {
-      if (_handlerMap[_IN_EVENT] !== null ||
-          _handlerMap[_CLOSE_EVENT] !== null) {
+      if (_handlerMap[_SocketBase._IN_EVENT] !== null ||
+          _handlerMap[_SocketBase._CLOSE_EVENT] !== null) {
         throw new StreamException(
             "Cannot get input stream when socket handlers are used");
       }
       _inputStream = new SocketInputStream(this);
     }
     return _inputStream;
   }
 
   OutputStream get outputStream() {
     if (_outputStream == null) {
-      if (_handlerMap[_OUT_EVENT] !== null) {
+      if (_handlerMap[_SocketBase._OUT_EVENT] !== null) {
         throw new StreamException(
             "Cannot get input stream when socket handlers are used");
       }
       _outputStream = new SocketOutputStream(this);
     }
     return _outputStream;
   }
 
   void set _onWrite(void callback()) {
-    _setHandler(_OUT_EVENT, callback);
+    _setHandler(_SocketBase._OUT_EVENT, callback);
   }
 
   void set _onData(void callback()) {
-    _setHandler(_IN_EVENT, callback);
+    _setHandler(_SocketBase._IN_EVENT, callback);
   }
 
   void set _onClosed(void callback()) {
-    _setHandler(_CLOSE_EVENT, callback);
+    _setHandler(_SocketBase._CLOSE_EVENT, callback);
   }
 
   void _propagateError(Exception e) {
     if (_inputStream != null) {
       _inputStream._onError(e);
     }
     if (_outputStream != null) {
       _outputStream._onError(e);
     }
   }
@@ skipping 57 matching lines @@
   bool _seenFirstOutEvent = false;
   bool _pipe = false;
   Function _clientConnectHandler;
   Function _clientWriteHandler;
   SocketInputStream _inputStream;
   SocketOutputStream _outputStream;
   String _remoteHost;
   int _remotePort;
   static SendPort _socketService;
 }