Start better error reporting for sockets

runtime/bin/http.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.
 
 /**
  * HTTP status codes.
  */
 interface HttpStatus {
   static final int CONTINUE = 100;
   static final int SWITCHING_PROTOCOLS = 101;
@@ skipping 274 matching lines @@
    * the response is ready for processing. The callback is called when
    * all headers of the response are received and data is ready to be
    * received.
    */
   void set onResponse(void handler(HttpClientResponse response));
 
   /**
    * Sets the handler that gets called if an error occurs while
    * processing the HTTP request.
    */
- void set onError(void handler(HttpException e));
+  void set onError(void handler(HttpException e));
 }
 
 
 /**
  * HTTP request for a client connection.
  */
 interface HttpClientRequest default _HttpClientRequest {
   /**
    * Gets and sets the content length of the request. If the size of
    * the request is not known in advance set content length to -1,
@@ skipping 89 matching lines @@
    */
   InputStream get inputStream();
 }
 
 
 class HttpException implements Exception {
   const HttpException([String this.message = ""]);
   String toString() => "HttpException: $message";
   final String message;
 }