CURLINFO_SIZE_DOWNLOAD(3) Introduction to Library Functions

NAME

CURLINFO_SIZE_DOWNLOAD - number of downloaded bytes

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_SIZE_DOWNLOAD, double *dlp);

DESCRIPTION

Pass a pointer to a double to receive the total amount of bytes that
were downloaded. The amount is only for the latest transfer and gets
reset again for each new transfer. This counts actual payload data,
what's also commonly called body. All meta and header data is
excluded and not included in this number.

CURLINFO_SIZE_DOWNLOAD_T(3) is a newer replacement that returns a
more sensible variable type.

PROTOCOLS

This functionality affects all supported protocols

EXAMPLE

int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode result;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

/* Perform the request */
result = curl_easy_perform(curl);

if(!result) {
/* check the size */
double dl;
result = curl_easy_getinfo(curl, CURLINFO_SIZE_DOWNLOAD, &dl);
if(!result) {
printf("Downloaded %.0f bytes\n", dl);
}
}
}
}

DEPRECATED

Deprecated since 7.55.0.

AVAILABILITY

Added in curl 7.4.1

RETURN VALUE

curl_easy_setopt(3) returns a CURLcode indicating success or error.

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

SEE ALSO

CURLINFO_SIZE_DOWNLOAD_T(3), CURLINFO_SIZE_UPLOAD_T(3),
CURLOPT_MAXFILESIZE(3), curl_easy_getinfo(3), curl_easy_setopt(3)

libcurl 2026-01-08 CURLINFO_SIZE_DOWNLOAD(3)