code: /** 
   * Make a POST and send request using a writer
   * @throws Exception
   */
  @Test public void sendWithWriter() throws Exception {
    final AtomicReference<String> body=new AtomicReference<String>();
    handler=new RequestHandler(){
      @Override public void handle(    Request request,    HttpServletResponse response){
        body.set(new String(read()));
        response.setStatus(HTTP_OK);
      }
    }
  ;
    HttpRequest request=post(url);
    request.writer().append("hello").close();
    assertTrue(request.ok());
    assertEquals("hello",body.get());
  }
  