bind to localhost instead of all interfaces, and fix closureWrap

lib/devc.dart

Index: lib/devc.dart
diff --git a/lib/devc.dart b/lib/devc.dart
index 5e8d3aac116f132661d6bce9c07b96458f34da12..199711ab3ee93e07ae61f6c21b73d237c2b10b27 100644
--- a/lib/devc.dart
+++ b/lib/devc.dart
@@ -275,7 +275,7 @@ class CompilerServer {
         .addMiddleware(rebuildAndCache)
         .addHandler(shelf_static.createStaticHandler(outDir,
             defaultDocument: _entryPath));
-    await shelf.serve(handler, '0.0.0.0', port);
+    await shelf.serve(handler, 'localhost', port);

[Siggi Cherem (dart-lang), 2015/03/19 21:15:02]

mmm, I used to have this but change it to 0.0.0.0 to make it work behind a
proxy. Maybe we can make this a flag instead? I'm ok making localhost the
default.

[Jennifer Messerly, 2015/03/19 21:18:24]

for flag: can it be host name to connect to? That way you can say which
interface to connect, e.g.
--host=192.168.0.2 or --host=jmesserly.at.my.domain and of course, it would
support --host=0.0.0.0. We could also have that example in the help text

     compiler.run();
   }