Re: [jetty-users] Connection Manager

[Simone Bordet <sbordet@xxxxxxxxxxx>]

Hi,

On Mon, Oct 10, 2022 at 12:02 PM Dung Nguyen <chong.xipam@xxxxxxxxx> wrote:
>
> Hi!
>
> I use jetty for my server. I just wonder if there is a way to manage (get count , list connection, force disconnect) connection ?
>
> For example : i want verify client before it connect and then disconnect a client if the authentication failed, how to do that ?
>
> my code like this :
>
> server = new Server();
> ServerConnector httpConnector = new ServerConnector(server);
> httpConnector.setPort(utils.server_listen_port);
> httpConnector.setIdleTimeout(5000); //
> httpConnector.setHost(listen_interface); // <--------- !
> server.addConnector(httpConnector);
> ServletContextHandler handler = new ServletContextHandler(server, "/");
>
> hello h0    = new hello();          h0.bind_to_server(handler, "/");
>
>
>
> public class hello extends HttpServlet{
>
>     @Override
>     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
>         try {
>             if (!req.getParameter("key").equals("123"){
>
>                  disconnect the client!
>
>             }
>             ... do other thing
>         } catch (Exception e) {
>             e.printStackTrace();
>             write_response....(resp, "ERROR Exception " + e.getMessage());
>         }
>     }
> }

The Servlet APIs do not expose any API to close the connection.
However, you can add the `Connection: close` header to the response.

Adding the `Connection: close` header would only work for HTTP/1.1
(and just for that one connection, not for all the connections
established by the client to the server).
For other protocols such as HTTP/2 or HTTP/3, adding the `Connection:
close` header will have no effect.

However, HTTP Authentication is a solved problem, you should research
the topic and use existing solutions, rather than trying to close the
connection.
In particular for Servlets, you can use authentication Filters, etc.

-- 
Simone Bordet
----
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