CURLOPT_TFTP_NO_OPTIONS(3)

NAME
CURLOPT_TFTP_NO_OPTIONS - send no TFTP options requests

SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TFTP_NO_OPTIONS, long onoff);

DESCRIPTION
Set onoff to 1L to exclude all TFTP options defined in RFC 2347, RFC 2348 and RFC 2349 from read and write requests. This option improves interoperability with legacy servers that do not acknowledge or properly implement TFTP options. When this option is used CURLOPT_TFTP_BLKSIZE(3) is ignored.

DEFAULT
0

PROTOCOLS
This functionality affects tftp only

EXAMPLE
size_t write_callback(char *ptr, size_t size, size_t nmemb, void *fp)
{
  return fwrite(ptr, size, nmemb, (FILE *)fp);
}
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    FILE *fp = fopen("foo.bin", "wb");
    if(fp) {
      curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)fp);
      curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
      curl_easy_setopt(curl, CURLOPT_URL, "tftp://example.com/foo.bin");
      /* do not send TFTP options requests */
      curl_easy_setopt(curl, CURLOPT_TFTP_NO_OPTIONS, 1L);
      /* Perform the request */
      curl_easy_perform(curl);
      fclose(fp);
    }
    curl_easy_cleanup(curl);
  }
}

AVAILABILITY
Added in curl 7.48.0

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_TFTP_BLKSIZE(3)