NAME

       curl_multi_notify_enable - enable a notification type

SYNOPSIS

       #include <curl/curl.h>
       CURLMcode curl_multi_notify_enable(CURLM *multi_handle,
                                          unsigned int notification);

DESCRIPTION

       Enables  collecting  the  given  notification type in the multi handle. A callback function installed via
       CURLMOPT_NOTIFYFUNCTION(3) is called when this notification happens.

       Only when a notification callback is installed and a notification is  enabled  are  these  collected  and
       dispatched to the callback.

       Several  notification  types can be enabled at the same time. Enabling an already enabled notification is
       not an error.

       A notification can be disabled again via curl_multi_notify_disable(3).

PROTOCOLS

       This functionality affects all supported protocols

EXAMPLE

       int main(void)
       {
         int rc;
         CURLM *multi = curl_multi_init();

         rc = curl_multi_notify_enable(multi, CURLMNOTIFY_INFO_READ);
       }

AVAILABILITY

       Added in curl 8.17.0

RETURN VALUE

       This function returns a CURLMcode indicating success or error.

       CURLM_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

       The return code is for the whole multi stack. Problems still might have occurred on individual  transfers
       even when one of these functions return OK.

SEE ALSO

       CURLMOPT_NOTIFYDATA(3), CURLMOPT_NOTIFYFUNCTION(3), curl_multi_notify_disable(3)

libcurl                                            2025-11-07                        curl_multi_notify_enable(3)