curl_multi_get_offt(3)

curl_multi_get_offt3

Extract information from a multi handle

Usage

#include <curl/curl.h>
CURLMcode curl_multi_get_offt(CURLM *multi_handle,
                              CURLMinfo_offt info,
                              curl_off_t *pvalue);

Overview

Get the info kept in the multi handle. If the info is not applicable, this function returns CURLM_UNKNOWN_OPTION.

Options

The following information can be extracted:

CURLMINFO_XFERS_CURRENT

See CURLMINFO_XFERS_CURRENT(3).

CURLMINFO_XFERS_RUNNING

See CURLMINFO_XFERS_RUNNING(3).

CURLMINFO_XFERS_PENDING

See CURLMINFO_XFERS_PENDING(3).

CURLMINFO_XFERS_DONE

See CURLMINFO_XFERS_DONE(3).

CURLMINFO_XFERS_ADDED

See CURLMINFO_XFERS_ADDED(3).

Protocols

This functionality affects all supported protocols

Examples

int main(void)
{
  /* init a multi stack */
  CURLM *multi = curl_multi_init();
  CURL *curl = curl_easy_init();
  curl_off_t n;
  if(curl) {
    /* add the transfer */
    curl_multi_add_handle(multi, curl);
    curl_multi_get_offt(multi, CURLMINFO_XFERS_ADDED, &n);
    /* on successful add, n is 1 */
  }
}

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).

Availability

Added in curl 8.16.0

From curl 8.23.0-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.