CURLINFO_CONTENT_LENGTH_DOWNLOAD

Section: curl_easy_getinfo options (3)
Updated: June 15, 2017
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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 isn't known.

CURLINFO_CONTENT_LENGTH_DOWNLOAD_T(3) is a newer replacement that returns a more sensible variable type.  

PROTOCOLS

HTTP(S)  

EXAMPLE

CURL *curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_URL, "http://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_UPLOAD(3),

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Index

NAME

SYNOPSIS

DESCRIPTION

PROTOCOLS

EXAMPLE

AVAILABILITY

RETURN VALUE

SEE ALSO