Make std* blocking file-descriptors.

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 946 matching lines @@
         _controller.add(RawSocketEvent.CLOSED);
         _controller.close();
       },
       error: zone.bindUnaryCallback((e) {
         _controller.addError(e);
         _socket.close();
       })
     );
   }
 
-  factory _RawSocket._writePipe(int fd) {
+  factory _RawSocket._writePipe() {
     var native = new _NativeSocket.pipe();
     native.isClosedRead = true;
-    if (fd != null) _getStdioHandle(native, fd);
     return new _RawSocket(native);
   }
 
   factory _RawSocket._readPipe(int fd) {
     var native = new _NativeSocket.pipe();
     native.isClosedWrite = true;
     if (fd != null) _getStdioHandle(native, fd);
     var result = new _RawSocket(native);
     result._isMacOSTerminalInput =
         Platform.isMacOS &&
@@ skipping 245 matching lines @@
     _consumer = new _SocketStreamConsumer(this);
     _sink = new IOSink(_consumer);
 
     // Disable read events until there is a subscription.
     _raw.readEventsEnabled = false;
 
     // Disable write events until the consumer needs it for pending writes.
     _raw.writeEventsEnabled = false;
   }
 
-  factory _Socket._writePipe([int fd]) {
-    return new _Socket(new _RawSocket._writePipe(fd));
+  factory _Socket._writePipe() {
+    return new _Socket(new _RawSocket._writePipe());
   }
 
   factory _Socket._readPipe([int fd]) {
     return new _Socket(new _RawSocket._readPipe(fd));
   }
 
   _NativeSocket get _nativeSocket => _raw._socket;
 
   StreamSubscription<List<int>> listen(void onData(List<int> event),
                                        {Function onError,
@@ skipping 303 matching lines @@
 
 Datagram _makeDatagram(List<int> data,
                        String address,
                        List<int> in_addr,
                        int port) {
   return new Datagram(
       data,
       new _InternetAddress(address, null, in_addr),
       port);
 }