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CURLINFO_CONTENT_LENGTH_DOWNLOAD_T(3) curl_easy_getinfo options CURLINFO_CONTENT_LENGTH_DOWNLOAD_T(3)

CURLINFO_CONTENT_LENGTH_DOWNLOAD_T - get content-length of download

#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CONTENT_LENGTH_DOWNLOAD_T,
                           curl_off_t *content_length);

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.

HTTP(S)

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 */
    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);
    }
  }
}

Added in 7.55.0

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

curl_easy_getinfo(3), curl_easy_setopt(3), CURLINFO_CONTENT_LENGTH_UPLOAD_T(3),
November 26, 2021 libcurl 7.83.1

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