--- c: Copyright (C) Daniel Stenberg, , et al. SPDX-License-Identifier: curl Title: CURLOPT_MAXFILESIZE Section: 3 Source: libcurl See-also: - CURLOPT_MAXFILESIZE_LARGE (3) - CURLOPT_MAX_RECV_SPEED_LARGE (3) Protocol: - All Added-in: 7.10.8 --- # NAME CURLOPT_MAXFILESIZE - maximum file size allowed to download # SYNOPSIS ~~~c #include CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXFILESIZE, long size); ~~~ # DESCRIPTION Pass a long as parameter. This specifies the maximum accepted *size* (in bytes) of a file to download. If the file requested is found larger than this value, the transfer is aborted and *CURLE_FILESIZE_EXCEEDED* is returned. Passing a zero *size* disables this, and passing a negative *size* yields a *CURLE_BAD_FUNCTION_ARGUMENT*. 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 CURLOPT_MAXFILESIZE_LARGE(3). Since 8.4.0, this option also stops ongoing transfers if they reach this threshold. # DEFAULT 0, meaning disabled. # %PROTOCOLS% # EXAMPLE ~~~c int main(void) { 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); } } ~~~ # %AVAILABILITY% # RETURN VALUE Returns CURLE_OK if the size passed is valid or CURLE_BAD_FUNCTION_ARGUMENT if not.