CURLOPT_IGNORE_CONTENT_LENGTH(3)                      Library Functions Manual

NAME
       CURLOPT_IGNORE_CONTENT_LENGTH - ignore content length

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IGNORE_CONTENT_LENGTH,
                                 long ignore);

DESCRIPTION
       If ignore is set to 1L, ignore the Content-Length header in the HTTP
       response and ignore asking for or relying on it for FTP transfers.

       This is useful for doing HTTP transfers with ancient web servers which
       report incorrect content length for files over 2 gigabytes. If this
       option is used, curl cannot accurately report progress, and it instead
       stops the download when the server ends the connection.

       It is also useful with FTP when for example the file is growing while
       the transfer is in progress which otherwise unconditionally causes
       libcurl to report error.

       Only use this option if strictly necessary.

DEFAULT
       0

PROTOCOLS
       This functionality affects ftp and http

EXAMPLE
       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

           /* we know the server is silly, ignore content-length */
           curl_easy_setopt(curl, CURLOPT_IGNORE_CONTENT_LENGTH, 1L);

           curl_easy_perform(curl);
         }
       }

HISTORY
       Support for FTP added in 7.46.0.

AVAILABILITY
       Added in curl 7.14.1

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_HTTP_VERSION(3), CURLOPT_MAXFILESIZE_LARGE(3)

libcurl                           2025-02-13  CURLOPT_IGNORE_CONTENT_LENGTH(3)