Make new StreamController be async by default.

sdk/lib/io/http_impl.dart

Index: sdk/lib/io/http_impl.dart
diff --git a/sdk/lib/io/http_impl.dart b/sdk/lib/io/http_impl.dart
index b27441b7aa87983eef6b4ae6f22743a5d15de755..7b518510cf6f569a57210eb21b0199e8dad5aa22 100644
--- a/sdk/lib/io/http_impl.dart
+++ b/sdk/lib/io/http_impl.dart
@@ -570,7 +570,7 @@ class _HttpOutboundConsumer implements StreamConsumer {
 
   _ensureController() {
     if (_controller != null) return;
-    _controller = new StreamController(onPause: () => _subscription.pause(),
+    _controller = new StreamController(sync: true,onPause: () => _subscription.pause(),

[floitsch, 2013/05/30 12:13:48]

missing new-line.

[Lasse Reichstein Nielsen, 2013/05/31 05:51:59]

Done.

                                        onResume: () => _subscription.resume(),
                                        onListen: () => _subscription.resume(),
                                        onCancel: _cancel);
@@ -1939,7 +1939,7 @@ class _HttpServer extends Stream<HttpRequest> implements HttpServer {
   // Set of currently connected clients.
   final Set<_HttpConnection> _connections = new Set<_HttpConnection>();
   final StreamController<HttpRequest> _controller
-      = new StreamController<HttpRequest>();
+      = new StreamController<HttpRequest>(sync: true);
 
   // TODO(ajohnsen): Use close queue?
 }