Manpages - CURLMOPT_TIMERDATA.3

CURLMOPT_TIMERDATA - custom pointer to pass to timer callback

  #include <curl/curl.h>

  CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_TIMERDATA, void *pointer);

A data pointer to pass to the timer callback set with the CURLMOPT_TIMERFUNCTION(3) option.

This pointer will not be touched by libcurl but will only be passed in to the timer callbacks’s userp argument.

NULL

All

  static gboolean timeout_cb(gpointer user_data)
  {
    int running;
    if(user_data) {
      g_free(user_data);
      curl_multi_setopt(curl_handle, CURLMOPT_TIMERDATA, NULL);
    }
    curl_multi_socket_action(multi, CURL_SOCKET_TIMEOUT, 0, &running);
    return G_SOURCE_REMOVE;
  }

  static int timerfunc(CURLM *multi, long timeout_ms, void *userp)
  {
    guint *id = userp;

    if(id)
      g_source_remove(*id);

    /* -1 means we should just delete our timer. */
    if(timeout_ms == -1) {
      g_free(id);
      id = NULL;
    }
    else {
      if(!id)
        id = g_new(guint, 1);
      *id = g_timeout_add(timeout_ms, timeout_cb, id);
    }
    curl_multi_setopt(multi, CURLMOPT_TIMERDATA, id);
    return 0;
  }

  curl_multi_setopt(multi, CURLMOPT_TIMERFUNCTION, timerfunc);

Added in 7.16.0

Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.

*CURLMOPT_TIMERFUNCTION*(3), *CURLMOPT_SOCKETFUNCTION*(3),