Use patching for dart:io.

runtime/bin/socket_patch.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.
 
+patch class ServerSocket {
+  /* patch */ factory ServerSocket(String bindAddress, int port, int backlog) {
+    return new _ServerSocket(bindAddress, port, backlog);
+  }
+}
+
+
+patch class Socket {
+  /* patch */ factory Socket(String host, int port) => new _Socket(host, port);
+}
+
 
 class _SocketBase extends NativeFieldWrapperClass1 {
   // 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
   // EVENT flags indicate the events that actually happened. The
   // COMMAND flags are used to send commands from dart to the
   // eventhandler. COMMAND flags are never received from the
   // eventhandler. Additional flags are used to communicate other
@@ skipping 75 matching lines @@
         _handlerMask == 0 &&
         _handler != null) {
       _handler.close();
       _handler = null;
     } else {
       _activateHandlers();
     }
   }
 
   OSError _getError() native "Socket_GetError";
+ 
   int _getPort() native "Socket_GetPort";
 
   void set onError(void callback(e)) {
     _setHandler(_ERROR_EVENT, callback);
   }
 
   void _activateHandlers() {
     if (_canActivateHandlers && !_closed) {
       if (_handlerMask == 0) {
         if (_handler != null) {
@@ skipping 306 matching lines @@
         _reportError(result, "Write failed");
         // If writing fails we return 0 as the number of bytes and
         // report the error on the error handler.
         result = 0;
       }
       return result;
     }
     throw new SocketIOException("writeList failed - invalid socket handle");
   }
 
-  _writeList(List<int> buffer, int offset, int bytes)
-      native "Socket_WriteList";
+  _writeList(List<int> buffer, int offset, int bytes) native "Socket_WriteList";
 
   bool _isErrorResponse(response) {
     return response is List && response[0] != _SUCCESS_RESPONSE;
   }
 
   bool _createConnect(String host, int port) native "Socket_CreateConnect";
 
   void set onWrite(void callback()) {
     if (_outputStream != null) throw new StreamException(
             "Cannot set write handler when output stream is used");
@@ skipping 135 matching lines @@
   bool _seenFirstOutEvent = false;
   bool _pipe = false;
   Function _clientConnectHandler;
   Function _clientWriteHandler;
   _SocketInputStream _inputStream;
   _SocketOutputStream _outputStream;
   String _remoteHost;
   int _remotePort;
   static SendPort _socketService;
 }