CURLMOPT_TIMERDATA man page

CURLMOPT_TIMERDATA ā€” custom pointer to pass to timer callback

Synopsis

#include <curl/curl.h>

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

Description

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.

Default

NULL

Protocols

All

Example

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);

Availability

Added in 7.16.0

Return Value

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

See Also

CURLMOPT_TIMERFUNCTION(3), CURLMOPT_SOCKETFUNCTION(3),

Referenced By

CURLMOPT_TIMERFUNCTION(3), curl_multi_setopt(3).

May 27, 2017 libcurl 7.56.1 curl_multi_setopt options