File size: 1,462 Bytes
910a777 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 |
---
c: Copyright (C) Daniel Stenberg, <[email protected]>, et al.
SPDX-License-Identifier: curl
Title: CURLINFO_CONTENT_LENGTH_DOWNLOAD
Section: 3
Source: libcurl
See-also:
- CURLINFO_CONTENT_LENGTH_UPLOAD (3)
- curl_easy_getinfo (3)
- curl_easy_setopt (3)
Protocol:
- All
Added-in: 7.6.1
---
# NAME
CURLINFO_CONTENT_LENGTH_DOWNLOAD - get content-length of download
# SYNOPSIS
~~~c
#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 is not known.
CURLINFO_CONTENT_LENGTH_DOWNLOAD_T(3) is a newer replacement that returns a more
sensible variable type.
# %PROTOCOLS%
# EXAMPLE
~~~c
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);
}
}
}
}
~~~
# DEPRECATED
Deprecated since 7.55.0.
# %AVAILABILITY%
# RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
|