Check the state of the HTTP request and response when handling headers

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;
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    * used to register callbacks for asynchronous events on the HTTP
    * connection. The "Host" header for the request will be set based
    * the host and port specified in [url]. This can be overridden
    * through the HttpClientRequest interface before the request is
    * sent. NOTE if the host is specified as an IP address this will
    * still be set in the "Host" header.
    */
   HttpClientConnection openUrl(String method, Uri url);
 
   /**
-   * Opens a HTTP connection using the GET method. See [open] for details.
+   * Opens a HTTP connection using the GET method. See [open] for
+   * details. Using this method to open a HTTP connection will set the
+   * content length to 0.
    */
   HttpClientConnection get(String host, int port, String path);
 
   /**
-   * Opens a HTTP connection using the GET method. See [openUrl] for details.
+   * Opens a HTTP connection using the GET method. See [openUrl] for
+   * details. Using this method to open a HTTP connection will set the
+   * content length to 0.
    */
   HttpClientConnection getUrl(Uri url);
 
   /**
    * Opens a HTTP connection using the POST method. See [open] for details.
    */
   HttpClientConnection post(String host, int port, String path);
 
   /**
    * Opens a HTTP connection using the POST method. See [openUrl] for details.
@@ skipping 99 matching lines @@
    */
   InputStream get inputStream();
 }
 
 
 class HttpException implements Exception {
   const HttpException([String this.message = ""]);
   String toString() => "HttpException: $message";
   final String message;
 }