curl/docs/libcurl/opts/CURLOPT_MAXFILESIZE.3
Daniel Stenberg 914e49b9b7
lib: let the max filesize option stop too big transfers too
Previously it would only stop them from getting started if the size is
known to be too big then.

Update the libcurl and curl docs accordingly.

Fixes #11810
Reported-by: Elliot Killick
Assisted-by: Jay Satiro
Closes #11820
2023-09-23 11:20:20 +02:00

68 lines
2.4 KiB
Groff

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.TH CURLOPT_MAXFILESIZE 3 "19 Jun 2014" libcurl libcurl
.SH NAME
CURLOPT_MAXFILESIZE \- maximum file size allowed to download
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXFILESIZE, long size);
.fi
.SH DESCRIPTION
Pass a long as parameter. This specifies the maximum accepted \fIsize\fP (in
bytes) of a file to download. If the file requested is found larger than this
value, the transfer is aborted and \fICURLE_FILESIZE_EXCEEDED\fP is returned.
The file size is not always known prior to the download start, and for such
transfers this option has no effect - even if the file transfer eventually
ends up being larger than this given limit.
If you want a limit above 2GB, use \fICURLOPT_MAXFILESIZE_LARGE(3)\fP.
Since 8.4.0, this option also stops ongoing transfers if they reach this
threshold.
.SH DEFAULT
None
.SH PROTOCOLS
FTP, HTTP and MQTT
.SH EXAMPLE
.nf
CURL *curl = curl_easy_init();
if(curl) {
CURLcode ret;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
/* refuse to download if larger than 1000 bytes! */
curl_easy_setopt(curl, CURLOPT_MAXFILESIZE, 1000L);
ret = curl_easy_perform(curl);
}
.fi
.SH AVAILABILITY
Always
.SH RETURN VALUE
Returns CURLE_OK
.SH "SEE ALSO"
.BR CURLOPT_MAXFILESIZE_LARGE "(3), " CURLOPT_MAX_RECV_SPEED_LARGE "(3), "