CURLINFO_CONTENT_LENGTH_DOWNLOAD_T(3)                 Library Functions Manual

NAME
       CURLINFO_CONTENT_LENGTH_DOWNLOAD_T - get content-length of download

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CONTENT_LENGTH_DOWNLOAD_T,
                                  curl_off_t *content_length);

DESCRIPTION
       Pass a pointer to a curl_off_t to receive the content-length of the
       download. This is the value read from the Content-Length: field. Stores
       -1 if the size is not known.

PROTOCOLS
       HTTP

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 */
             curl_off_t cl;
             res = curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD_T, &cl);
             if(!res) {
               printf("Download size: %" CURL_FORMAT_CURL_OFF_T "\n", cl);
             }
           }
         }
       }

AVAILABILITY
       Added in 7.55.0

RETURN VALUE
       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
       if not.

SEE ALSO
       CURLINFO_CONTENT_LENGTH_UPLOAD_T(3), curl_easy_getinfo(3),
       curl_easy_setopt(3)

libcurl                          April 26 2024
                                         CURLINFO_CONTENT_LENGTH_DOWNLOAD_T(3)