CURLINFO_CONTENT_LENGTH_DOWNLOAD(3) Library Functions Manual
NAME
CURLINFO_CONTENT_LENGTH_DOWNLOAD - get 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. Since
7.19.4, 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 res;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
/* Perform the request */
res = curl_easy_perform(curl);
if(!res) {
/* check the size */
double cl;
res = curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &cl);
if(!res) {
printf("Size: %.0f\n", cl);
}
}
}
}
DEPRECATED
Deprecated since 7.55.0.
AVAILABILITY
Added in curl 7.6.1
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
if not.
SEE ALSO
CURLINFO_CONTENT_LENGTH_UPLOAD(3), curl_easy_getinfo(3),
curl_easy_setopt(3)
libcurl 2024-08-05
CURLINFO_CONTENT_LENGTH_DOWNLOAD(3)
curl 8.9.1 - Generated Sun Aug 11 07:21:55 CDT 2024