# Receiving AUTHRET\_NONE after authentication, the authentication callbacks are never being called

**URL:** <https://devforum.zoom.us/t/receiving-authret-none-after-authentication-the-authentication-callbacks-are-never-being-called/96091>\
**Category:** Meeting SDK\
**Created:** [October 2, 2023, 1:06am UTC](https://devforum.zoom.us/t/receiving-authret-none-after-authentication-the-authentication-callbacks-are-never-being-called/96091 "2023-10-02T01:06:06Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![alextsi](https://avatars.discourse-cdn.com/v4/letter/a/dfb087/32.png) [@alextsi](https://devforum.zoom.us/u/alextsi)\
**Post date:** [October 5, 2023, 12:14am UTC](https://devforum.zoom.us/t/receiving-authret-none-after-authentication-the-authentication-callbacks-are-never-being-called/96091/4 "2023-10-05T00:14:19Z")

</div>

Hi, fellow Zoom developers,

After reviewing the latest posts on the forum, I was able to resolve the issue when I came across this post: [Linux Meeting SDK example](https://devforum.zoom.us/t/linux-meeting-sdk-example/96126)

First, I got my Crow HTTP server running in a separate thread.

Secondly, I integrated a GMainLoop into my main.cpp code:

```auto
#include <glib.h>

void sigHandler(int s)
{
    cout << "Caught signal: " << s << endl;
    httpServer->Stop();
    exit(0);
}

int main() {
    /* ... */
    struct sigaction sigIntHandler{};
    sigIntHandler.sa_handler = sigHandler;
    sigemptyset(&sigIntHandler.sa_mask);
    sigIntHandler.sa_flags = 0;
    sigaction(SIGINT, &sigIntHandler, nullptr);

    GMainLoop* loop = g_main_loop_new(nullptr, FALSE);
    g_timeout_add(100, [](gpointer) -> gboolean {
        return TRUE;
    }, loop);
    g_main_loop_run(loop);
    return 0;
}

```

You will need to install the `gtkmm-3.0` package and add it to your CMakeLists.txt along with `glib-2.0` library.

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