NAME

       CURLOPT_RANGE - byte range to request

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RANGE, char *range);

DESCRIPTION

       Pass  a  char  pointer  as parameter, which should contain the specified range you want to
       retrieve. It should be in the format "X-Y", where either X or Y may be left out and X  and
       Y are byte indexes.

       HTTP  transfers  also  support  several  intervals, separated with commas as in "X-Y,N-M".
       Using this kind of multiple intervals causes the HTTP server to send the response document
       in  pieces  (using  standard MIME separation techniques). Unfortunately, the HTTP standard
       (RFC 7233 section 3.1) allows servers to ignore  range  requests  so  even  when  you  set
       CURLOPT_RANGE(3) for a request, you may end up getting the full response sent back.

       For  RTSP,  the formatting of a range should follow RFC 2326 Section 12.29. For RTSP, byte
       ranges are not permitted. Instead, ranges should be given in npt, utc, or smpte formats.

       For HTTP PUT uploads this option should not be used, since  it  may  conflict  with  other
       options.

       Pass a NULL to this option to disable the use of ranges.

       The application does not have to keep the string around after setting this option.

DEFAULT

       NULL

PROTOCOLS

       This functionality affects file, ftp, http, rtsp and sftp

EXAMPLE

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

           /* get the first 200 bytes */
           curl_easy_setopt(curl, CURLOPT_RANGE, "0-199");

           /* Perform the request */
           curl_easy_perform(curl);
         }
       }

HISTORY

       FILE since 7.18.0, RTSP since 7.20.0

AVAILABILITY

       Added in curl 7.1

RETURN VALUE

       Returns CURLE_OK on success or CURLE_OUT_OF_MEMORY if there was insufficient heap space.

SEE ALSO

       CURLOPT_LOW_SPEED_LIMIT(3), CURLOPT_MAXFILESIZE_LARGE(3), CURLOPT_MAX_RECV_SPEED_LARGE(3),
       CURLOPT_RESUME_FROM(3)