CURLOPT_MA...ESIZE_LARGE(3) Library Functions Manual CURLOPT_MA...ESIZE_LARGE(3) NAME CURLOPT_MAXFILESIZE_LARGE - maximum file size allowed to download SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXFILESIZE_LARGE, curl_off_t size); DESCRIPTION Pass a curl_off_t 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 re- turned. Passing a zero size disables this, and passing a negative size yields a CURLE_BAD_FUNCTION_ARGUMENT. If the size is known to exceed the limit before the transfer starts, libcurl aborts before starting the transfer. If the transfer instead ex- ceeds the limit while it is in progress, libcurl aborts it at that point. Since 8.20.0, this option also stops ongoing transfers that would reach this threshold due to automatic decompression using CURLOPT_ACCEPT_ENCOD- ING(3). DEFAULT 0, meaning disabled. PROTOCOLS This functionality affects ftp, http and mqtt EXAMPLE int main(void) { CURL *curl = curl_easy_init(); if(curl) { CURLcode result; curl_off_t ridiculous = (curl_off_t)1 << 48; curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/"); /* refuse to download if larger than ridiculous */ curl_easy_setopt(curl, CURLOPT_MAXFILESIZE_LARGE, ridiculous); result = curl_easy_perform(curl); } } AVAILABILITY Added in curl 7.11.0 HISTORY Before curl 8.4.0, the limit was not applied to transfers in progress. RETURN VALUE curl_easy_setopt(3) returns a CURLcode indicating success or error. CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3). SEE ALSO CURLOPT_MAXFILESIZE(3), CURLOPT_MAX_RECV_SPEED_LARGE(3) libcurl 2026-08-27 CURLOPT_MA...ESIZE_LARGE(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | HISTORY | RETURN VALUE | SEE ALSO
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