CURLINFO_CONTENT_LENGTH_DOWcurlDeasy_getinfCURLINFOsCONTENT_LENGTH_DOWNLOAD(3)
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 down-
load. 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 re-
turns a more sensible variable type.
PROTOCOLS
HTTP(S)
EXAMPLE
CURL *curl = curl_easy_init();
if(curl) {
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);
}
}
}
AVAILABILITY
Added in 7.6.1
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
if not.
SEE ALSO
curl_easy_getinfo(3), curl_easy_setopt(3), CURLINFO_CONTENT_LENGTH_UP-
LOAD(3),
libcurl 7.81.0 November 26,CURLINFO_CONTENT_LENGTH_DOWNLOAD(3)
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