CURLINFO_CONTENT_LENGTH_DOWNLOAD - content-length of download

NAME SYNOPSIS DESCRIPTION PROTOCOLS EXAMPLE DEPRECATED AVAILABILITY RETURN VALUE SEE ALSO

NAME

CURLINFO_CONTENT_LENGTH_DOWNLOAD − content−length of download

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CONTENT_LENGTH_DOWNLOAD,
double *content_length);

DESCRIPTION

Pass a pointer to a double to receive the content−length of the download. This is the value read from the Content−Length: field. This returns −1 if the size is not known.

CURLINFO_CONTENT_LENGTH_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 == CURLE_OK) {
/* check the size */
double cl;
result = curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &cl);
if(result == CURLE_OK) {
printf("Size: %.0f\n", cl);
}
}
}
}