.\" generated by cd2nroff 0.1 from CURLINFO_CONTENT_LENGTH_DOWNLOAD.md
.TH CURLINFO_CONTENT_LENGTH_DOWNLOAD 3 "2024-04-19" libcurl
.SH NAME
CURLINFO_CONTENT_LENGTH_DOWNLOAD \- get content\-length of download
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CONTENT_LENGTH_DOWNLOAD,
                           double *content_length);
.fi
.SH 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 is not known.

\fICURLINFO_CONTENT_LENGTH_DOWNLOAD_T(3)\fP is a newer replacement that returns a more
sensible variable type.
.SH PROTOCOLS
All
.SH EXAMPLE
.nf
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);
      }
    }
  }
}
.fi
.SH AVAILABILITY
Added in 7.6.1. Deprecated since 7.55.0.
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
.SH SEE ALSO
.BR CURLINFO_CONTENT_LENGTH_UPLOAD (3),
.BR curl_easy_getinfo (3),
.BR curl_easy_setopt (3)