Re: [libmicrohttpd] Passing data into MHD_start_daemon

[silvioprog]

Hi Gavin.

I'm not sure if I understood properly, but, if you are trying to share your config instance to your request handle function, you can send it via MHD_start_daemon(), for example, supposing code at https://github.com/SentryPeer/SentryPeer/blob/99a5b5be48c788d9e5f4177725babc5a97e8f37e/src/http_daemon.c#L127, it would looks like this:

...
  daemon = MHD_start_daemon(MHD_USE_THREAD_PER_CONNECTION,
        HTTP_DAEMON_PORT, NULL, NULL, &ahc_get, your_config_instance,
        MHD_OPTION_END);

...

so you would be able to access it as:

...

static enum MHD_Result ahc_get(void *cls, struct MHD_Connection *connection,
      const char *url, const char *method,
      const char *version, const char *upload_data,
      size_t *upload_data_size, void **ptr)
{

  your_config_instance = cls;

...

Let me know if this is what you are looking for.

The "ptr" in general is used to share something between requests. I have been using both in my project.

A good reference: https://www.gnu.org/software/libmicrohttpd/manual/libmicrohttpd.html#index-MHD_005fstart_005fdaemon

On Fri, Dec 17, 2021 at 1:47 PM Gavin Henry <ghenry@sentrypeer.org> wrote:

Hi all,

At https://github.com/SentryPeer/SentryPeer/blob/99a5b5be48c788d9e5f4177725babc5a97e8f37e/src/http_daemon.c#L135

I'm looking to pass in sentrypeer_config const *config, and am using
dh_cls to pick off cls in:

https://github.com/SentryPeer/SentryPeer/blob/99a5b5be48c788d9e5f4177725babc5a97e8f37e/src/http_daemon.c#L56

Is that the correct way? It looks like I should be using **ptr at:

https://github.com/SentryPeer/SentryPeer/blob/99a5b5be48c788d9e5f4177725babc5a97e8f37e/src/http_daemon.c#L59

But how do I set that in MHD_start_daemon()

Thanks.

--
Kind Regards,

Gavin Henry.
https://sentrypeer.org

--

Silvio Clécio