/** Redirect to HTTP port. */
 @Override
 protected void service(HttpServletRequest req, HttpServletResponse resp)
     throws ServletException, IOException {
   HttpClient client = HttpConnectionUtil.getClient(connectionTimeout);
   // setup POST
   HttpPost post = null;
   try {
     post = new HttpPost(postAcceptorURL);
     String path = req.getContextPath();
     if (path == null) {
       path = "";
     }
     log.debug("Path: {}", path);
     if (req.getPathInfo() != null) {
       path += req.getPathInfo();
     }
     log.debug("Path 2: {}", path);
     int reqContentLength = req.getContentLength();
     if (reqContentLength > 0) {
       log.debug("Request content length: {}", reqContentLength);
       IoBuffer reqBuffer = IoBuffer.allocate(reqContentLength);
       ServletUtils.copy(req, reqBuffer.asOutputStream());
       reqBuffer.flip();
       post.setEntity(new InputStreamEntity(reqBuffer.asInputStream(), reqContentLength));
       post.addHeader("Content-Type", REQUEST_TYPE);
       // get.setPath(path);
       post.addHeader("Tunnel-request", path);
       // execute the method
       HttpResponse response = client.execute(post);
       int code = response.getStatusLine().getStatusCode();
       log.debug("HTTP response code: {}", code);
       if (code == HttpStatus.SC_OK) {
         HttpEntity entity = response.getEntity();
         if (entity != null) {
           resp.setContentType(REQUEST_TYPE);
           // get the response as bytes
           byte[] bytes = EntityUtils.toByteArray(entity);
           IoBuffer resultBuffer = IoBuffer.wrap(bytes);
           resultBuffer.flip();
           ServletUtils.copy(resultBuffer.asInputStream(), resp.getOutputStream());
           resp.flushBuffer();
         }
       } else {
         resp.sendError(code);
       }
     } else {
       resp.sendError(HttpStatus.SC_BAD_REQUEST);
     }
   } catch (Exception ex) {
     log.error("", ex);
     if (post != null) {
       post.abort();
     }
   }
 }
 {
   httpClient = HttpConnectionUtil.getSecureClient();
 }