1---
2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
3SPDX-License-Identifier: curl
4Title: CURLOPT_MAXFILESIZE
5Section: 3
6Source: libcurl
7See-also:
8  - CURLOPT_MAXFILESIZE_LARGE (3)
9  - CURLOPT_MAX_RECV_SPEED_LARGE (3)
10Protocol:
11  - All
12Added-in: 7.10.8
13---
14
15# NAME
16
17CURLOPT_MAXFILESIZE - maximum file size allowed to download
18
19# SYNOPSIS
20
21~~~c
22#include <curl/curl.h>
23
24CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXFILESIZE, long size);
25~~~
26
27# DESCRIPTION
28
29Pass a long as parameter. This specifies the maximum accepted *size* (in
30bytes) of a file to download. If the file requested is found larger than this
31value, the transfer is aborted and *CURLE_FILESIZE_EXCEEDED* is returned.
32Passing a zero *size* disables this, and passing a negative *size* yields a
33*CURLE_BAD_FUNCTION_ARGUMENT*.
34
35The file size is not always known prior to the download start, and for such
36transfers this option has no effect - even if the file transfer eventually
37ends up being larger than this given limit.
38
39If you want a limit above 2GB, use CURLOPT_MAXFILESIZE_LARGE(3).
40
41Since 8.4.0, this option also stops ongoing transfers if they reach this
42threshold.
43
44# DEFAULT
45
460, meaning disabled.
47
48# %PROTOCOLS%
49
50# EXAMPLE
51
52~~~c
53int main(void)
54{
55  CURL *curl = curl_easy_init();
56  if(curl) {
57    CURLcode ret;
58    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
59    /* refuse to download if larger than 1000 bytes */
60    curl_easy_setopt(curl, CURLOPT_MAXFILESIZE, 1000L);
61    ret = curl_easy_perform(curl);
62  }
63}
64~~~
65
66# %AVAILABILITY%
67
68# RETURN VALUE
69
70Returns CURLE_OK if the size passed is valid or CURLE_BAD_FUNCTION_ARGUMENT if
71not.
72