CURLINFO_CONTENT_LENGTH_DOWNLOAD3
Get content-length of download
Usage
#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CONTENT_LENGTH_DOWNLOAD,
double *content_length);
Overview
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
HTTP(S)
Examples
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);
}
}
}
}
Return value
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
Releases
66 releases since macOS 10.12; the text changed 12 times.